| <!DOCTYPE html><html lang="en"><head><meta charset="utf-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><meta name="generator" content="rustdoc"><meta name="description" content="Source of the Rust file `crates/hir-ty/src/mir/eval/shim.rs`."><title>shim.rs - source</title><script>if(window.location.protocol!=="file:")document.head.insertAdjacentHTML("beforeend","SourceSerif4-Regular-6b053e98.ttf.woff2,FiraSans-Italic-81dc35de.woff2,FiraSans-Regular-0fe48ade.woff2,FiraSans-MediumItalic-ccf7e434.woff2,FiraSans-Medium-e1aa3f0a.woff2,SourceCodePro-Regular-8badfe75.ttf.woff2,SourceCodePro-Semibold-aa29a496.ttf.woff2".split(",").map(f=>`<link rel="preload" as="font" type="font/woff2"href="../../../../static.files/${f}">`).join(""))</script><link rel="stylesheet" href="../../../../static.files/normalize-9960930a.css"><link rel="stylesheet" href="../../../../static.files/rustdoc-e56847b5.css"><meta name="rustdoc-vars" data-root-path="../../../../" data-static-root-path="../../../../static.files/" data-current-crate="hir_ty" data-themes="" data-resource-suffix="" data-rustdoc-version="1.91.1 (ed61e7d7e 2025-11-07)" data-channel="1.91.1" data-search-js="search-e256b49e.js" data-stringdex-js="stringdex-c3e638e9.js" data-settings-js="settings-c38705f0.js" ><script src="../../../../static.files/storage-e2aeef58.js"></script><script defer src="../../../../static.files/src-script-813739b1.js"></script><script defer src="../../../../src-files.js"></script><script defer src="../../../../static.files/main-6dc2a7f3.js"></script><noscript><link rel="stylesheet" href="../../../../static.files/noscript-263c88ec.css"></noscript><link rel="alternate icon" type="image/png" href="../../../../static.files/favicon-32x32-eab170b8.png"><link rel="icon" type="image/svg+xml" href="../../../../static.files/favicon-044be391.svg"></head><body class="rustdoc src"><!--[if lte IE 11]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="sidebar"><div class="src-sidebar-title"><h2>Files</h2></div></nav><div class="sidebar-resizer" title="Drag to resize sidebar"></div><main><section id="main-content" class="content"><div class="main-heading"><h1><div class="sub-heading">hir_ty/mir/eval/</div>shim.rs</h1><rustdoc-toolbar></rustdoc-toolbar></div><div class="example-wrap digits-4"><pre class="rust"><code><a href=#1 id=1 data-nosnippet>1</a><span class="doccomment">//! Interpret intrinsics, lang items and `extern "C"` wellknown functions which their implementation |
| <a href=#2 id=2 data-nosnippet>2</a>//! is not available. |
| <a href=#3 id=3 data-nosnippet>3</a>//! |
| <a href=#4 id=4 data-nosnippet>4</a></span><span class="kw">use </span>std::cmp::{<span class="self">self</span>, Ordering}; |
| <a href=#5 id=5 data-nosnippet>5</a> |
| <a href=#6 id=6 data-nosnippet>6</a><span class="kw">use </span>hir_def::{attrs::AttrFlags, signatures::FunctionSignature}; |
| <a href=#7 id=7 data-nosnippet>7</a><span class="kw">use </span>hir_expand::name::Name; |
| <a href=#8 id=8 data-nosnippet>8</a><span class="kw">use </span>intern::sym; |
| <a href=#9 id=9 data-nosnippet>9</a><span class="kw">use </span>rustc_type_ir::inherent::{AdtDef, IntoKind, SliceLike, Ty <span class="kw">as _</span>}; |
| <a href=#10 id=10 data-nosnippet>10</a><span class="kw">use </span>stdx::never; |
| <a href=#11 id=11 data-nosnippet>11</a> |
| <a href=#12 id=12 data-nosnippet>12</a><span class="kw">use crate</span>::{ |
| <a href=#13 id=13 data-nosnippet>13</a> InferenceResult, |
| <a href=#14 id=14 data-nosnippet>14</a> display::DisplayTarget, |
| <a href=#15 id=15 data-nosnippet>15</a> drop::{DropGlue, has_drop_glue}, |
| <a href=#16 id=16 data-nosnippet>16</a> mir::eval::{ |
| <a href=#17 id=17 data-nosnippet>17</a> Address, AdtId, Arc, Evaluator, FunctionId, GenericArgs, HasModule, HirDisplay, |
| <a href=#18 id=18 data-nosnippet>18</a> InternedClosure, Interval, IntervalAndTy, IntervalOrOwned, ItemContainerId, Layout, Locals, |
| <a href=#19 id=19 data-nosnippet>19</a> Lookup, MirEvalError, MirSpan, Mutability, <span class="prelude-ty">Result</span>, Ty, TyKind, pad16, |
| <a href=#20 id=20 data-nosnippet>20</a> }, |
| <a href=#21 id=21 data-nosnippet>21</a> next_solver::Region, |
| <a href=#22 id=22 data-nosnippet>22</a>}; |
| <a href=#23 id=23 data-nosnippet>23</a> |
| <a href=#24 id=24 data-nosnippet>24</a><span class="kw">mod </span>simd; |
| <a href=#25 id=25 data-nosnippet>25</a> |
| <a href=#26 id=26 data-nosnippet>26</a><span class="macro">macro_rules!</span> from_bytes { |
| <a href=#27 id=27 data-nosnippet>27</a> (<span class="macro-nonterminal">$ty</span>:tt, <span class="macro-nonterminal">$value</span>:expr) => { |
| <a href=#28 id=28 data-nosnippet>28</a> (<span class="macro-nonterminal">$ty::from_le_bytes</span>(<span class="kw">match </span>(<span class="macro-nonterminal">$value</span>).try_into() { |
| <a href=#29 id=29 data-nosnippet>29</a> <span class="prelude-val">Ok</span>(it) => it, |
| <a href=#30 id=30 data-nosnippet>30</a> <span class="attr">#[allow(unreachable_patterns)] |
| <a href=#31 id=31 data-nosnippet>31</a> </span><span class="prelude-val">Err</span>(<span class="kw">_</span>) => <span class="kw">return </span><span class="prelude-val">Err</span>(MirEvalError::InternalError(<span class="string">"mismatched size"</span>.into())), |
| <a href=#32 id=32 data-nosnippet>32</a> })) |
| <a href=#33 id=33 data-nosnippet>33</a> }; |
| <a href=#34 id=34 data-nosnippet>34</a>} |
| <a href=#35 id=35 data-nosnippet>35</a> |
| <a href=#36 id=36 data-nosnippet>36</a><span class="macro">macro_rules!</span> not_supported { |
| <a href=#37 id=37 data-nosnippet>37</a> (<span class="macro-nonterminal">$it</span>: expr) => { |
| <a href=#38 id=38 data-nosnippet>38</a> <span class="kw">return </span><span class="prelude-val">Err</span>(MirEvalError::NotSupported(<span class="macro">format!</span>(<span class="macro-nonterminal">$it</span>))) |
| <a href=#39 id=39 data-nosnippet>39</a> }; |
| <a href=#40 id=40 data-nosnippet>40</a>} |
| <a href=#41 id=41 data-nosnippet>41</a> |
| <a href=#42 id=42 data-nosnippet>42</a><span class="attr">#[derive(Debug, Clone, Copy, PartialEq, Eq)] |
| <a href=#43 id=43 data-nosnippet>43</a></span><span class="kw">enum </span>EvalLangItem { |
| <a href=#44 id=44 data-nosnippet>44</a> BeginPanic, |
| <a href=#45 id=45 data-nosnippet>45</a> SliceLen, |
| <a href=#46 id=46 data-nosnippet>46</a> DropInPlace, |
| <a href=#47 id=47 data-nosnippet>47</a>} |
| <a href=#48 id=48 data-nosnippet>48</a> |
| <a href=#49 id=49 data-nosnippet>49</a><span class="kw">impl</span><<span class="lifetime">'db</span>> Evaluator<<span class="lifetime">'db</span>> { |
| <a href=#50 id=50 data-nosnippet>50</a> <span class="kw">pub</span>(<span class="kw">super</span>) <span class="kw">fn </span>detect_and_exec_special_function( |
| <a href=#51 id=51 data-nosnippet>51</a> <span class="kw-2">&mut </span><span class="self">self</span>, |
| <a href=#52 id=52 data-nosnippet>52</a> def: FunctionId, |
| <a href=#53 id=53 data-nosnippet>53</a> args: <span class="kw-2">&</span>[IntervalAndTy<<span class="lifetime">'db</span>>], |
| <a href=#54 id=54 data-nosnippet>54</a> generic_args: GenericArgs<<span class="lifetime">'db</span>>, |
| <a href=#55 id=55 data-nosnippet>55</a> locals: <span class="kw-2">&</span>Locals<<span class="lifetime">'db</span>>, |
| <a href=#56 id=56 data-nosnippet>56</a> destination: Interval, |
| <a href=#57 id=57 data-nosnippet>57</a> span: MirSpan, |
| <a href=#58 id=58 data-nosnippet>58</a> ) -> <span class="prelude-ty">Result</span><<span class="lifetime">'db</span>, bool> { |
| <a href=#59 id=59 data-nosnippet>59</a> <span class="kw">if </span><span class="self">self</span>.not_special_fn_cache.borrow().contains(<span class="kw-2">&</span>def) { |
| <a href=#60 id=60 data-nosnippet>60</a> <span class="kw">return </span><span class="prelude-val">Ok</span>(<span class="bool-val">false</span>); |
| <a href=#61 id=61 data-nosnippet>61</a> } |
| <a href=#62 id=62 data-nosnippet>62</a> |
| <a href=#63 id=63 data-nosnippet>63</a> <span class="kw">let </span>function_data = <span class="self">self</span>.db.function_signature(def); |
| <a href=#64 id=64 data-nosnippet>64</a> <span class="kw">let </span>attrs = AttrFlags::query(<span class="self">self</span>.db, def.into()); |
| <a href=#65 id=65 data-nosnippet>65</a> <span class="kw">let </span>is_intrinsic = FunctionSignature::is_intrinsic(<span class="self">self</span>.db, def); |
| <a href=#66 id=66 data-nosnippet>66</a> |
| <a href=#67 id=67 data-nosnippet>67</a> <span class="kw">if </span>is_intrinsic { |
| <a href=#68 id=68 data-nosnippet>68</a> <span class="kw">return </span><span class="self">self</span>.exec_intrinsic( |
| <a href=#69 id=69 data-nosnippet>69</a> function_data.name.as_str(), |
| <a href=#70 id=70 data-nosnippet>70</a> args, |
| <a href=#71 id=71 data-nosnippet>71</a> generic_args, |
| <a href=#72 id=72 data-nosnippet>72</a> destination, |
| <a href=#73 id=73 data-nosnippet>73</a> locals, |
| <a href=#74 id=74 data-nosnippet>74</a> span, |
| <a href=#75 id=75 data-nosnippet>75</a> !function_data.has_body() |
| <a href=#76 id=76 data-nosnippet>76</a> || attrs.contains(AttrFlags::RUSTC_INTRINSIC_MUST_BE_OVERRIDDEN), |
| <a href=#77 id=77 data-nosnippet>77</a> ); |
| <a href=#78 id=78 data-nosnippet>78</a> } |
| <a href=#79 id=79 data-nosnippet>79</a> <span class="kw">let </span>is_extern_c = <span class="kw">match </span>def.lookup(<span class="self">self</span>.db).container { |
| <a href=#80 id=80 data-nosnippet>80</a> hir_def::ItemContainerId::ExternBlockId(block) => block.abi(<span class="self">self</span>.db) == <span class="prelude-val">Some</span>(sym::C), |
| <a href=#81 id=81 data-nosnippet>81</a> <span class="kw">_ </span>=> <span class="bool-val">false</span>, |
| <a href=#82 id=82 data-nosnippet>82</a> }; |
| <a href=#83 id=83 data-nosnippet>83</a> <span class="kw">if </span>is_extern_c { |
| <a href=#84 id=84 data-nosnippet>84</a> <span class="kw">return </span><span class="self">self |
| <a href=#85 id=85 data-nosnippet>85</a> </span>.exec_extern_c( |
| <a href=#86 id=86 data-nosnippet>86</a> function_data.name.as_str(), |
| <a href=#87 id=87 data-nosnippet>87</a> args, |
| <a href=#88 id=88 data-nosnippet>88</a> generic_args, |
| <a href=#89 id=89 data-nosnippet>89</a> destination, |
| <a href=#90 id=90 data-nosnippet>90</a> locals, |
| <a href=#91 id=91 data-nosnippet>91</a> span, |
| <a href=#92 id=92 data-nosnippet>92</a> ) |
| <a href=#93 id=93 data-nosnippet>93</a> .map(|()| <span class="bool-val">true</span>); |
| <a href=#94 id=94 data-nosnippet>94</a> } |
| <a href=#95 id=95 data-nosnippet>95</a> |
| <a href=#96 id=96 data-nosnippet>96</a> <span class="kw">if </span>attrs.intersects( |
| <a href=#97 id=97 data-nosnippet>97</a> AttrFlags::RUSTC_ALLOCATOR |
| <a href=#98 id=98 data-nosnippet>98</a> | AttrFlags::RUSTC_DEALLOCATOR |
| <a href=#99 id=99 data-nosnippet>99</a> | AttrFlags::RUSTC_REALLOCATOR |
| <a href=#100 id=100 data-nosnippet>100</a> | AttrFlags::RUSTC_ALLOCATOR_ZEROED, |
| <a href=#101 id=101 data-nosnippet>101</a> ) { |
| <a href=#102 id=102 data-nosnippet>102</a> <span class="self">self</span>.exec_alloc_fn(attrs, args, destination)<span class="question-mark">?</span>; |
| <a href=#103 id=103 data-nosnippet>103</a> <span class="kw">return </span><span class="prelude-val">Ok</span>(<span class="bool-val">true</span>); |
| <a href=#104 id=104 data-nosnippet>104</a> } |
| <a href=#105 id=105 data-nosnippet>105</a> <span class="kw">if let </span><span class="prelude-val">Some</span>(it) = <span class="self">self</span>.detect_lang_function(def) { |
| <a href=#106 id=106 data-nosnippet>106</a> <span class="kw">let </span>result = <span class="self">self</span>.exec_lang_item(it, generic_args, args, locals, span)<span class="question-mark">?</span>; |
| <a href=#107 id=107 data-nosnippet>107</a> destination.write_from_bytes(<span class="self">self</span>, <span class="kw-2">&</span>result)<span class="question-mark">?</span>; |
| <a href=#108 id=108 data-nosnippet>108</a> <span class="kw">return </span><span class="prelude-val">Ok</span>(<span class="bool-val">true</span>); |
| <a href=#109 id=109 data-nosnippet>109</a> } |
| <a href=#110 id=110 data-nosnippet>110</a> <span class="kw">if let </span>ItemContainerId::TraitId(t) = def.lookup(<span class="self">self</span>.db).container |
| <a href=#111 id=111 data-nosnippet>111</a> && <span class="prelude-val">Some</span>(t) == <span class="self">self</span>.lang_items().Clone |
| <a href=#112 id=112 data-nosnippet>112</a> { |
| <a href=#113 id=113 data-nosnippet>113</a> <span class="kw">let </span>[self_ty] = generic_args.as_slice() <span class="kw">else </span>{ |
| <a href=#114 id=114 data-nosnippet>114</a> <span class="macro">not_supported!</span>(<span class="string">"wrong generic arg count for clone"</span>); |
| <a href=#115 id=115 data-nosnippet>115</a> }; |
| <a href=#116 id=116 data-nosnippet>116</a> <span class="kw">let </span><span class="prelude-val">Some</span>(self_ty) = self_ty.ty() <span class="kw">else </span>{ |
| <a href=#117 id=117 data-nosnippet>117</a> <span class="macro">not_supported!</span>(<span class="string">"wrong generic arg kind for clone"</span>); |
| <a href=#118 id=118 data-nosnippet>118</a> }; |
| <a href=#119 id=119 data-nosnippet>119</a> <span class="comment">// Clone has special impls for tuples and function pointers |
| <a href=#120 id=120 data-nosnippet>120</a> </span><span class="kw">if </span><span class="macro">matches!</span>(self_ty.kind(), TyKind::FnPtr(..) | TyKind::Tuple(..) | TyKind::Closure(..)) |
| <a href=#121 id=121 data-nosnippet>121</a> { |
| <a href=#122 id=122 data-nosnippet>122</a> <span class="self">self</span>.exec_clone(def, args, self_ty, locals, destination, span)<span class="question-mark">?</span>; |
| <a href=#123 id=123 data-nosnippet>123</a> <span class="kw">return </span><span class="prelude-val">Ok</span>(<span class="bool-val">true</span>); |
| <a href=#124 id=124 data-nosnippet>124</a> } |
| <a href=#125 id=125 data-nosnippet>125</a> <span class="comment">// Return early to prevent caching clone as non special fn. |
| <a href=#126 id=126 data-nosnippet>126</a> </span><span class="kw">return </span><span class="prelude-val">Ok</span>(<span class="bool-val">false</span>); |
| <a href=#127 id=127 data-nosnippet>127</a> } |
| <a href=#128 id=128 data-nosnippet>128</a> <span class="self">self</span>.not_special_fn_cache.borrow_mut().insert(def); |
| <a href=#129 id=129 data-nosnippet>129</a> <span class="prelude-val">Ok</span>(<span class="bool-val">false</span>) |
| <a href=#130 id=130 data-nosnippet>130</a> } |
| <a href=#131 id=131 data-nosnippet>131</a> |
| <a href=#132 id=132 data-nosnippet>132</a> <span class="kw">pub</span>(<span class="kw">super</span>) <span class="kw">fn </span>detect_and_redirect_special_function( |
| <a href=#133 id=133 data-nosnippet>133</a> <span class="kw-2">&mut </span><span class="self">self</span>, |
| <a href=#134 id=134 data-nosnippet>134</a> def: FunctionId, |
| <a href=#135 id=135 data-nosnippet>135</a> ) -> <span class="prelude-ty">Result</span><<span class="lifetime">'db</span>, <span class="prelude-ty">Option</span><FunctionId>> { |
| <a href=#136 id=136 data-nosnippet>136</a> <span class="comment">// `PanicFmt` is redirected to `ConstPanicFmt` |
| <a href=#137 id=137 data-nosnippet>137</a> </span><span class="kw">if </span><span class="prelude-val">Some</span>(def) == <span class="self">self</span>.lang_items().PanicFmt { |
| <a href=#138 id=138 data-nosnippet>138</a> <span class="kw">let </span><span class="prelude-val">Some</span>(const_panic_fmt) = <span class="self">self</span>.lang_items().ConstPanicFmt <span class="kw">else </span>{ |
| <a href=#139 id=139 data-nosnippet>139</a> <span class="macro">not_supported!</span>(<span class="string">"const_panic_fmt lang item not found or not a function"</span>); |
| <a href=#140 id=140 data-nosnippet>140</a> }; |
| <a href=#141 id=141 data-nosnippet>141</a> <span class="kw">return </span><span class="prelude-val">Ok</span>(<span class="prelude-val">Some</span>(const_panic_fmt)); |
| <a href=#142 id=142 data-nosnippet>142</a> } |
| <a href=#143 id=143 data-nosnippet>143</a> <span class="prelude-val">Ok</span>(<span class="prelude-val">None</span>) |
| <a href=#144 id=144 data-nosnippet>144</a> } |
| <a href=#145 id=145 data-nosnippet>145</a> |
| <a href=#146 id=146 data-nosnippet>146</a> <span class="doccomment">/// Clone has special impls for tuples and function pointers |
| <a href=#147 id=147 data-nosnippet>147</a> </span><span class="kw">fn </span>exec_clone( |
| <a href=#148 id=148 data-nosnippet>148</a> <span class="kw-2">&mut </span><span class="self">self</span>, |
| <a href=#149 id=149 data-nosnippet>149</a> def: FunctionId, |
| <a href=#150 id=150 data-nosnippet>150</a> args: <span class="kw-2">&</span>[IntervalAndTy<<span class="lifetime">'db</span>>], |
| <a href=#151 id=151 data-nosnippet>151</a> self_ty: Ty<<span class="lifetime">'db</span>>, |
| <a href=#152 id=152 data-nosnippet>152</a> locals: <span class="kw-2">&</span>Locals<<span class="lifetime">'db</span>>, |
| <a href=#153 id=153 data-nosnippet>153</a> destination: Interval, |
| <a href=#154 id=154 data-nosnippet>154</a> span: MirSpan, |
| <a href=#155 id=155 data-nosnippet>155</a> ) -> <span class="prelude-ty">Result</span><<span class="lifetime">'db</span>, ()> { |
| <a href=#156 id=156 data-nosnippet>156</a> <span class="kw">match </span>self_ty.kind() { |
| <a href=#157 id=157 data-nosnippet>157</a> TyKind::FnPtr(..) => { |
| <a href=#158 id=158 data-nosnippet>158</a> <span class="kw">let </span>[arg] = args <span class="kw">else </span>{ |
| <a href=#159 id=159 data-nosnippet>159</a> <span class="macro">not_supported!</span>(<span class="string">"wrong arg count for clone"</span>); |
| <a href=#160 id=160 data-nosnippet>160</a> }; |
| <a href=#161 id=161 data-nosnippet>161</a> <span class="kw">let </span>addr = Address::from_bytes(arg.get(<span class="self">self</span>)<span class="question-mark">?</span>)<span class="question-mark">?</span>; |
| <a href=#162 id=162 data-nosnippet>162</a> <span class="kw">return </span>destination |
| <a href=#163 id=163 data-nosnippet>163</a> .write_from_interval(<span class="self">self</span>, Interval { addr, size: destination.size }); |
| <a href=#164 id=164 data-nosnippet>164</a> } |
| <a href=#165 id=165 data-nosnippet>165</a> TyKind::Closure(id, subst) => { |
| <a href=#166 id=166 data-nosnippet>166</a> <span class="kw">let </span>[arg] = args <span class="kw">else </span>{ |
| <a href=#167 id=167 data-nosnippet>167</a> <span class="macro">not_supported!</span>(<span class="string">"wrong arg count for clone"</span>); |
| <a href=#168 id=168 data-nosnippet>168</a> }; |
| <a href=#169 id=169 data-nosnippet>169</a> <span class="kw">let </span>addr = Address::from_bytes(arg.get(<span class="self">self</span>)<span class="question-mark">?</span>)<span class="question-mark">?</span>; |
| <a href=#170 id=170 data-nosnippet>170</a> <span class="kw">let </span>InternedClosure(closure_owner, <span class="kw">_</span>) = <span class="self">self</span>.db.lookup_intern_closure(id.<span class="number">0</span>); |
| <a href=#171 id=171 data-nosnippet>171</a> <span class="kw">let </span>infer = InferenceResult::for_body(<span class="self">self</span>.db, closure_owner); |
| <a href=#172 id=172 data-nosnippet>172</a> <span class="kw">let </span>(captures, <span class="kw">_</span>) = infer.closure_info(id.<span class="number">0</span>); |
| <a href=#173 id=173 data-nosnippet>173</a> <span class="kw">let </span>layout = <span class="self">self</span>.layout(self_ty)<span class="question-mark">?</span>; |
| <a href=#174 id=174 data-nosnippet>174</a> <span class="kw">let </span>db = <span class="self">self</span>.db; |
| <a href=#175 id=175 data-nosnippet>175</a> <span class="kw">let </span>ty_iter = captures.iter().map(|c| c.ty(db, subst)); |
| <a href=#176 id=176 data-nosnippet>176</a> <span class="self">self</span>.exec_clone_for_fields(ty_iter, layout, addr, def, locals, destination, span)<span class="question-mark">?</span>; |
| <a href=#177 id=177 data-nosnippet>177</a> } |
| <a href=#178 id=178 data-nosnippet>178</a> TyKind::Tuple(subst) => { |
| <a href=#179 id=179 data-nosnippet>179</a> <span class="kw">let </span>[arg] = args <span class="kw">else </span>{ |
| <a href=#180 id=180 data-nosnippet>180</a> <span class="macro">not_supported!</span>(<span class="string">"wrong arg count for clone"</span>); |
| <a href=#181 id=181 data-nosnippet>181</a> }; |
| <a href=#182 id=182 data-nosnippet>182</a> <span class="kw">let </span>addr = Address::from_bytes(arg.get(<span class="self">self</span>)<span class="question-mark">?</span>)<span class="question-mark">?</span>; |
| <a href=#183 id=183 data-nosnippet>183</a> <span class="kw">let </span>layout = <span class="self">self</span>.layout(self_ty)<span class="question-mark">?</span>; |
| <a href=#184 id=184 data-nosnippet>184</a> <span class="self">self</span>.exec_clone_for_fields( |
| <a href=#185 id=185 data-nosnippet>185</a> subst.iter(), |
| <a href=#186 id=186 data-nosnippet>186</a> layout, |
| <a href=#187 id=187 data-nosnippet>187</a> addr, |
| <a href=#188 id=188 data-nosnippet>188</a> def, |
| <a href=#189 id=189 data-nosnippet>189</a> locals, |
| <a href=#190 id=190 data-nosnippet>190</a> destination, |
| <a href=#191 id=191 data-nosnippet>191</a> span, |
| <a href=#192 id=192 data-nosnippet>192</a> )<span class="question-mark">?</span>; |
| <a href=#193 id=193 data-nosnippet>193</a> } |
| <a href=#194 id=194 data-nosnippet>194</a> <span class="kw">_ </span>=> { |
| <a href=#195 id=195 data-nosnippet>195</a> <span class="self">self</span>.exec_fn_with_args( |
| <a href=#196 id=196 data-nosnippet>196</a> def, |
| <a href=#197 id=197 data-nosnippet>197</a> args, |
| <a href=#198 id=198 data-nosnippet>198</a> GenericArgs::new_from_iter(<span class="self">self</span>.interner(), [self_ty.into()]), |
| <a href=#199 id=199 data-nosnippet>199</a> locals, |
| <a href=#200 id=200 data-nosnippet>200</a> destination, |
| <a href=#201 id=201 data-nosnippet>201</a> <span class="prelude-val">None</span>, |
| <a href=#202 id=202 data-nosnippet>202</a> span, |
| <a href=#203 id=203 data-nosnippet>203</a> )<span class="question-mark">?</span>; |
| <a href=#204 id=204 data-nosnippet>204</a> } |
| <a href=#205 id=205 data-nosnippet>205</a> } |
| <a href=#206 id=206 data-nosnippet>206</a> <span class="prelude-val">Ok</span>(()) |
| <a href=#207 id=207 data-nosnippet>207</a> } |
| <a href=#208 id=208 data-nosnippet>208</a> |
| <a href=#209 id=209 data-nosnippet>209</a> <span class="kw">fn </span>exec_clone_for_fields( |
| <a href=#210 id=210 data-nosnippet>210</a> <span class="kw-2">&mut </span><span class="self">self</span>, |
| <a href=#211 id=211 data-nosnippet>211</a> ty_iter: <span class="kw">impl </span>Iterator<Item = Ty<<span class="lifetime">'db</span>>>, |
| <a href=#212 id=212 data-nosnippet>212</a> layout: Arc<Layout>, |
| <a href=#213 id=213 data-nosnippet>213</a> addr: Address, |
| <a href=#214 id=214 data-nosnippet>214</a> def: FunctionId, |
| <a href=#215 id=215 data-nosnippet>215</a> locals: <span class="kw-2">&</span>Locals<<span class="lifetime">'db</span>>, |
| <a href=#216 id=216 data-nosnippet>216</a> destination: Interval, |
| <a href=#217 id=217 data-nosnippet>217</a> span: MirSpan, |
| <a href=#218 id=218 data-nosnippet>218</a> ) -> <span class="prelude-ty">Result</span><<span class="lifetime">'db</span>, ()> { |
| <a href=#219 id=219 data-nosnippet>219</a> <span class="kw">for </span>(i, ty) <span class="kw">in </span>ty_iter.enumerate() { |
| <a href=#220 id=220 data-nosnippet>220</a> <span class="kw">let </span>size = <span class="self">self</span>.layout(ty)<span class="question-mark">?</span>.size.bytes_usize(); |
| <a href=#221 id=221 data-nosnippet>221</a> <span class="kw">let </span>tmp = <span class="self">self</span>.heap_allocate(<span class="self">self</span>.ptr_size(), <span class="self">self</span>.ptr_size())<span class="question-mark">?</span>; |
| <a href=#222 id=222 data-nosnippet>222</a> <span class="kw">let </span>arg = IntervalAndTy { |
| <a href=#223 id=223 data-nosnippet>223</a> interval: Interval { addr: tmp, size: <span class="self">self</span>.ptr_size() }, |
| <a href=#224 id=224 data-nosnippet>224</a> ty: Ty::new_ref( |
| <a href=#225 id=225 data-nosnippet>225</a> <span class="self">self</span>.interner(), |
| <a href=#226 id=226 data-nosnippet>226</a> Region::error(<span class="self">self</span>.interner()), |
| <a href=#227 id=227 data-nosnippet>227</a> ty, |
| <a href=#228 id=228 data-nosnippet>228</a> Mutability::Not, |
| <a href=#229 id=229 data-nosnippet>229</a> ), |
| <a href=#230 id=230 data-nosnippet>230</a> }; |
| <a href=#231 id=231 data-nosnippet>231</a> <span class="kw">let </span>offset = layout.fields.offset(i).bytes_usize(); |
| <a href=#232 id=232 data-nosnippet>232</a> <span class="self">self</span>.write_memory(tmp, <span class="kw-2">&</span>addr.offset(offset).to_bytes())<span class="question-mark">?</span>; |
| <a href=#233 id=233 data-nosnippet>233</a> <span class="self">self</span>.exec_clone( |
| <a href=#234 id=234 data-nosnippet>234</a> def, |
| <a href=#235 id=235 data-nosnippet>235</a> <span class="kw-2">&</span>[arg], |
| <a href=#236 id=236 data-nosnippet>236</a> ty, |
| <a href=#237 id=237 data-nosnippet>237</a> locals, |
| <a href=#238 id=238 data-nosnippet>238</a> destination.slice(offset..offset + size), |
| <a href=#239 id=239 data-nosnippet>239</a> span, |
| <a href=#240 id=240 data-nosnippet>240</a> )<span class="question-mark">?</span>; |
| <a href=#241 id=241 data-nosnippet>241</a> } |
| <a href=#242 id=242 data-nosnippet>242</a> <span class="prelude-val">Ok</span>(()) |
| <a href=#243 id=243 data-nosnippet>243</a> } |
| <a href=#244 id=244 data-nosnippet>244</a> |
| <a href=#245 id=245 data-nosnippet>245</a> <span class="kw">fn </span>exec_alloc_fn( |
| <a href=#246 id=246 data-nosnippet>246</a> <span class="kw-2">&mut </span><span class="self">self</span>, |
| <a href=#247 id=247 data-nosnippet>247</a> alloc_fn: AttrFlags, |
| <a href=#248 id=248 data-nosnippet>248</a> args: <span class="kw-2">&</span>[IntervalAndTy<<span class="lifetime">'db</span>>], |
| <a href=#249 id=249 data-nosnippet>249</a> destination: Interval, |
| <a href=#250 id=250 data-nosnippet>250</a> ) -> <span class="prelude-ty">Result</span><<span class="lifetime">'db</span>, ()> { |
| <a href=#251 id=251 data-nosnippet>251</a> <span class="kw">match </span>alloc_fn { |
| <a href=#252 id=252 data-nosnippet>252</a> <span class="kw">_ if </span>alloc_fn |
| <a href=#253 id=253 data-nosnippet>253</a> .intersects(AttrFlags::RUSTC_ALLOCATOR_ZEROED | AttrFlags::RUSTC_ALLOCATOR) => |
| <a href=#254 id=254 data-nosnippet>254</a> { |
| <a href=#255 id=255 data-nosnippet>255</a> <span class="kw">let </span>[size, align] = args <span class="kw">else </span>{ |
| <a href=#256 id=256 data-nosnippet>256</a> <span class="kw">return </span><span class="prelude-val">Err</span>(MirEvalError::InternalError( |
| <a href=#257 id=257 data-nosnippet>257</a> <span class="string">"rustc_allocator args are not provided"</span>.into(), |
| <a href=#258 id=258 data-nosnippet>258</a> )); |
| <a href=#259 id=259 data-nosnippet>259</a> }; |
| <a href=#260 id=260 data-nosnippet>260</a> <span class="kw">let </span>size = <span class="macro">from_bytes!</span>(usize, size.get(<span class="self">self</span>)<span class="question-mark">?</span>); |
| <a href=#261 id=261 data-nosnippet>261</a> <span class="kw">let </span>align = <span class="macro">from_bytes!</span>(usize, align.get(<span class="self">self</span>)<span class="question-mark">?</span>); |
| <a href=#262 id=262 data-nosnippet>262</a> <span class="kw">let </span>result = <span class="self">self</span>.heap_allocate(size, align)<span class="question-mark">?</span>; |
| <a href=#263 id=263 data-nosnippet>263</a> destination.write_from_bytes(<span class="self">self</span>, <span class="kw-2">&</span>result.to_bytes())<span class="question-mark">?</span>; |
| <a href=#264 id=264 data-nosnippet>264</a> } |
| <a href=#265 id=265 data-nosnippet>265</a> <span class="kw">_ if </span>alloc_fn.contains(AttrFlags::RUSTC_DEALLOCATOR) => { <span class="comment">/* no-op for now */ </span>} |
| <a href=#266 id=266 data-nosnippet>266</a> <span class="kw">_ if </span>alloc_fn.contains(AttrFlags::RUSTC_REALLOCATOR) => { |
| <a href=#267 id=267 data-nosnippet>267</a> <span class="kw">let </span>[ptr, old_size, align, new_size] = args <span class="kw">else </span>{ |
| <a href=#268 id=268 data-nosnippet>268</a> <span class="kw">return </span><span class="prelude-val">Err</span>(MirEvalError::InternalError( |
| <a href=#269 id=269 data-nosnippet>269</a> <span class="string">"rustc_allocator args are not provided"</span>.into(), |
| <a href=#270 id=270 data-nosnippet>270</a> )); |
| <a href=#271 id=271 data-nosnippet>271</a> }; |
| <a href=#272 id=272 data-nosnippet>272</a> <span class="kw">let </span>old_size = <span class="macro">from_bytes!</span>(usize, old_size.get(<span class="self">self</span>)<span class="question-mark">?</span>); |
| <a href=#273 id=273 data-nosnippet>273</a> <span class="kw">let </span>new_size = <span class="macro">from_bytes!</span>(usize, new_size.get(<span class="self">self</span>)<span class="question-mark">?</span>); |
| <a href=#274 id=274 data-nosnippet>274</a> <span class="kw">if </span>old_size >= new_size { |
| <a href=#275 id=275 data-nosnippet>275</a> destination.write_from_interval(<span class="self">self</span>, ptr.interval)<span class="question-mark">?</span>; |
| <a href=#276 id=276 data-nosnippet>276</a> } <span class="kw">else </span>{ |
| <a href=#277 id=277 data-nosnippet>277</a> <span class="kw">let </span>ptr = Address::from_bytes(ptr.get(<span class="self">self</span>)<span class="question-mark">?</span>)<span class="question-mark">?</span>; |
| <a href=#278 id=278 data-nosnippet>278</a> <span class="kw">let </span>align = <span class="macro">from_bytes!</span>(usize, align.get(<span class="self">self</span>)<span class="question-mark">?</span>); |
| <a href=#279 id=279 data-nosnippet>279</a> <span class="kw">let </span>result = <span class="self">self</span>.heap_allocate(new_size, align)<span class="question-mark">?</span>; |
| <a href=#280 id=280 data-nosnippet>280</a> Interval { addr: result, size: old_size } |
| <a href=#281 id=281 data-nosnippet>281</a> .write_from_interval(<span class="self">self</span>, Interval { addr: ptr, size: old_size })<span class="question-mark">?</span>; |
| <a href=#282 id=282 data-nosnippet>282</a> destination.write_from_bytes(<span class="self">self</span>, <span class="kw-2">&</span>result.to_bytes())<span class="question-mark">?</span>; |
| <a href=#283 id=283 data-nosnippet>283</a> } |
| <a href=#284 id=284 data-nosnippet>284</a> } |
| <a href=#285 id=285 data-nosnippet>285</a> <span class="kw">_ </span>=> <span class="macro">not_supported!</span>(<span class="string">"unknown alloc function"</span>), |
| <a href=#286 id=286 data-nosnippet>286</a> } |
| <a href=#287 id=287 data-nosnippet>287</a> <span class="prelude-val">Ok</span>(()) |
| <a href=#288 id=288 data-nosnippet>288</a> } |
| <a href=#289 id=289 data-nosnippet>289</a> |
| <a href=#290 id=290 data-nosnippet>290</a> <span class="kw">fn </span>detect_lang_function(<span class="kw-2">&</span><span class="self">self</span>, def: FunctionId) -> <span class="prelude-ty">Option</span><EvalLangItem> { |
| <a href=#291 id=291 data-nosnippet>291</a> <span class="kw">use </span>EvalLangItem::<span class="kw-2">*</span>; |
| <a href=#292 id=292 data-nosnippet>292</a> <span class="kw">let </span>lang_items = <span class="self">self</span>.lang_items(); |
| <a href=#293 id=293 data-nosnippet>293</a> <span class="kw">let </span>attrs = AttrFlags::query(<span class="self">self</span>.db, def.into()); |
| <a href=#294 id=294 data-nosnippet>294</a> |
| <a href=#295 id=295 data-nosnippet>295</a> <span class="kw">if </span>attrs.contains(AttrFlags::RUSTC_CONST_PANIC_STR) { |
| <a href=#296 id=296 data-nosnippet>296</a> <span class="comment">// `#[rustc_const_panic_str]` is treated like `lang = "begin_panic"` by rustc CTFE. |
| <a href=#297 id=297 data-nosnippet>297</a> </span><span class="kw">return </span><span class="prelude-val">Some</span>(BeginPanic); |
| <a href=#298 id=298 data-nosnippet>298</a> } |
| <a href=#299 id=299 data-nosnippet>299</a> |
| <a href=#300 id=300 data-nosnippet>300</a> <span class="comment">// We want to execute these functions with special logic |
| <a href=#301 id=301 data-nosnippet>301</a> // `PanicFmt` is not detected here as it's redirected later. |
| <a href=#302 id=302 data-nosnippet>302</a> </span><span class="kw">if let </span><span class="prelude-val">Some</span>((<span class="kw">_</span>, candidate)) = [ |
| <a href=#303 id=303 data-nosnippet>303</a> (lang_items.BeginPanic, BeginPanic), |
| <a href=#304 id=304 data-nosnippet>304</a> (lang_items.SliceLen, SliceLen), |
| <a href=#305 id=305 data-nosnippet>305</a> (lang_items.DropInPlace, DropInPlace), |
| <a href=#306 id=306 data-nosnippet>306</a> ] |
| <a href=#307 id=307 data-nosnippet>307</a> .iter() |
| <a href=#308 id=308 data-nosnippet>308</a> .find(|<span class="kw-2">&</span>(candidate, <span class="kw">_</span>)| candidate == <span class="prelude-val">Some</span>(def)) |
| <a href=#309 id=309 data-nosnippet>309</a> { |
| <a href=#310 id=310 data-nosnippet>310</a> <span class="kw">return </span><span class="prelude-val">Some</span>(candidate); |
| <a href=#311 id=311 data-nosnippet>311</a> } |
| <a href=#312 id=312 data-nosnippet>312</a> |
| <a href=#313 id=313 data-nosnippet>313</a> <span class="prelude-val">None |
| <a href=#314 id=314 data-nosnippet>314</a> </span>} |
| <a href=#315 id=315 data-nosnippet>315</a> |
| <a href=#316 id=316 data-nosnippet>316</a> <span class="kw">fn </span>exec_lang_item( |
| <a href=#317 id=317 data-nosnippet>317</a> <span class="kw-2">&mut </span><span class="self">self</span>, |
| <a href=#318 id=318 data-nosnippet>318</a> it: EvalLangItem, |
| <a href=#319 id=319 data-nosnippet>319</a> generic_args: GenericArgs<<span class="lifetime">'db</span>>, |
| <a href=#320 id=320 data-nosnippet>320</a> args: <span class="kw-2">&</span>[IntervalAndTy<<span class="lifetime">'db</span>>], |
| <a href=#321 id=321 data-nosnippet>321</a> locals: <span class="kw-2">&</span>Locals<<span class="lifetime">'db</span>>, |
| <a href=#322 id=322 data-nosnippet>322</a> span: MirSpan, |
| <a href=#323 id=323 data-nosnippet>323</a> ) -> <span class="prelude-ty">Result</span><<span class="lifetime">'db</span>, Vec<u8>> { |
| <a href=#324 id=324 data-nosnippet>324</a> <span class="kw">use </span>EvalLangItem::<span class="kw-2">*</span>; |
| <a href=#325 id=325 data-nosnippet>325</a> <span class="kw">let </span><span class="kw-2">mut </span>args = args.iter(); |
| <a href=#326 id=326 data-nosnippet>326</a> <span class="kw">match </span>it { |
| <a href=#327 id=327 data-nosnippet>327</a> BeginPanic => { |
| <a href=#328 id=328 data-nosnippet>328</a> <span class="kw">let </span><span class="kw-2">mut </span>arg = args |
| <a href=#329 id=329 data-nosnippet>329</a> .next() |
| <a href=#330 id=330 data-nosnippet>330</a> .ok_or(MirEvalError::InternalError( |
| <a href=#331 id=331 data-nosnippet>331</a> <span class="string">"argument of BeginPanic is not provided"</span>.into(), |
| <a href=#332 id=332 data-nosnippet>332</a> ))<span class="question-mark">? |
| <a href=#333 id=333 data-nosnippet>333</a> </span>.clone(); |
| <a href=#334 id=334 data-nosnippet>334</a> <span class="kw">while let </span>TyKind::Ref(<span class="kw">_</span>, ty, <span class="kw">_</span>) = arg.ty.kind() { |
| <a href=#335 id=335 data-nosnippet>335</a> <span class="kw">if </span>ty.is_str() { |
| <a href=#336 id=336 data-nosnippet>336</a> <span class="kw">let </span>(pointee, metadata) = arg.interval.get(<span class="self">self</span>)<span class="question-mark">?</span>.split_at(<span class="self">self</span>.ptr_size()); |
| <a href=#337 id=337 data-nosnippet>337</a> <span class="kw">let </span>len = <span class="macro">from_bytes!</span>(usize, metadata); |
| <a href=#338 id=338 data-nosnippet>338</a> |
| <a href=#339 id=339 data-nosnippet>339</a> <span class="kw">return </span>{ |
| <a href=#340 id=340 data-nosnippet>340</a> <span class="prelude-val">Err</span>(MirEvalError::Panic( |
| <a href=#341 id=341 data-nosnippet>341</a> std::str::from_utf8( |
| <a href=#342 id=342 data-nosnippet>342</a> <span class="self">self</span>.read_memory(Address::from_bytes(pointee)<span class="question-mark">?</span>, len)<span class="question-mark">?</span>, |
| <a href=#343 id=343 data-nosnippet>343</a> ) |
| <a href=#344 id=344 data-nosnippet>344</a> .unwrap() |
| <a href=#345 id=345 data-nosnippet>345</a> .to_owned(), |
| <a href=#346 id=346 data-nosnippet>346</a> )) |
| <a href=#347 id=347 data-nosnippet>347</a> }; |
| <a href=#348 id=348 data-nosnippet>348</a> } |
| <a href=#349 id=349 data-nosnippet>349</a> <span class="kw">let </span>size = <span class="self">self</span>.size_of_sized(ty, locals, <span class="string">"begin panic arg"</span>)<span class="question-mark">?</span>; |
| <a href=#350 id=350 data-nosnippet>350</a> <span class="kw">let </span>pointee = arg.interval.get(<span class="self">self</span>)<span class="question-mark">?</span>; |
| <a href=#351 id=351 data-nosnippet>351</a> arg = IntervalAndTy { |
| <a href=#352 id=352 data-nosnippet>352</a> interval: Interval::new(Address::from_bytes(pointee)<span class="question-mark">?</span>, size), |
| <a href=#353 id=353 data-nosnippet>353</a> ty, |
| <a href=#354 id=354 data-nosnippet>354</a> }; |
| <a href=#355 id=355 data-nosnippet>355</a> } |
| <a href=#356 id=356 data-nosnippet>356</a> <span class="prelude-val">Err</span>(MirEvalError::Panic(<span class="macro">format!</span>(<span class="string">"unknown-panic-payload: {:?}"</span>, arg.ty.kind()))) |
| <a href=#357 id=357 data-nosnippet>357</a> } |
| <a href=#358 id=358 data-nosnippet>358</a> SliceLen => { |
| <a href=#359 id=359 data-nosnippet>359</a> <span class="kw">let </span>arg = args.next().ok_or(MirEvalError::InternalError( |
| <a href=#360 id=360 data-nosnippet>360</a> <span class="string">"argument of <[T]>::len() is not provided"</span>.into(), |
| <a href=#361 id=361 data-nosnippet>361</a> ))<span class="question-mark">?</span>; |
| <a href=#362 id=362 data-nosnippet>362</a> <span class="kw">let </span>arg = arg.get(<span class="self">self</span>)<span class="question-mark">?</span>; |
| <a href=#363 id=363 data-nosnippet>363</a> <span class="kw">let </span>ptr_size = arg.len() / <span class="number">2</span>; |
| <a href=#364 id=364 data-nosnippet>364</a> <span class="prelude-val">Ok</span>(arg[ptr_size..].into()) |
| <a href=#365 id=365 data-nosnippet>365</a> } |
| <a href=#366 id=366 data-nosnippet>366</a> DropInPlace => { |
| <a href=#367 id=367 data-nosnippet>367</a> <span class="kw">let </span>ty = generic_args.as_slice().first().and_then(|it| it.ty()).ok_or( |
| <a href=#368 id=368 data-nosnippet>368</a> MirEvalError::InternalError( |
| <a href=#369 id=369 data-nosnippet>369</a> <span class="string">"generic argument of drop_in_place is not provided"</span>.into(), |
| <a href=#370 id=370 data-nosnippet>370</a> ), |
| <a href=#371 id=371 data-nosnippet>371</a> )<span class="question-mark">?</span>; |
| <a href=#372 id=372 data-nosnippet>372</a> <span class="kw">let </span>arg = args.next().ok_or(MirEvalError::InternalError( |
| <a href=#373 id=373 data-nosnippet>373</a> <span class="string">"argument of drop_in_place is not provided"</span>.into(), |
| <a href=#374 id=374 data-nosnippet>374</a> ))<span class="question-mark">?</span>; |
| <a href=#375 id=375 data-nosnippet>375</a> <span class="kw">let </span>arg = arg.interval.get(<span class="self">self</span>)<span class="question-mark">?</span>.to_owned(); |
| <a href=#376 id=376 data-nosnippet>376</a> <span class="self">self</span>.run_drop_glue_deep( |
| <a href=#377 id=377 data-nosnippet>377</a> ty, |
| <a href=#378 id=378 data-nosnippet>378</a> locals, |
| <a href=#379 id=379 data-nosnippet>379</a> Address::from_bytes(<span class="kw-2">&</span>arg[<span class="number">0</span>..<span class="self">self</span>.ptr_size()])<span class="question-mark">?</span>, |
| <a href=#380 id=380 data-nosnippet>380</a> <span class="kw-2">&</span>arg[<span class="self">self</span>.ptr_size()..], |
| <a href=#381 id=381 data-nosnippet>381</a> span, |
| <a href=#382 id=382 data-nosnippet>382</a> )<span class="question-mark">?</span>; |
| <a href=#383 id=383 data-nosnippet>383</a> <span class="prelude-val">Ok</span>(<span class="macro">vec!</span>[]) |
| <a href=#384 id=384 data-nosnippet>384</a> } |
| <a href=#385 id=385 data-nosnippet>385</a> } |
| <a href=#386 id=386 data-nosnippet>386</a> } |
| <a href=#387 id=387 data-nosnippet>387</a> |
| <a href=#388 id=388 data-nosnippet>388</a> <span class="kw">fn </span>exec_syscall( |
| <a href=#389 id=389 data-nosnippet>389</a> <span class="kw-2">&mut </span><span class="self">self</span>, |
| <a href=#390 id=390 data-nosnippet>390</a> id: i64, |
| <a href=#391 id=391 data-nosnippet>391</a> args: <span class="kw-2">&</span>[IntervalAndTy<<span class="lifetime">'db</span>>], |
| <a href=#392 id=392 data-nosnippet>392</a> destination: Interval, |
| <a href=#393 id=393 data-nosnippet>393</a> _locals: <span class="kw-2">&</span>Locals<<span class="lifetime">'db</span>>, |
| <a href=#394 id=394 data-nosnippet>394</a> _span: MirSpan, |
| <a href=#395 id=395 data-nosnippet>395</a> ) -> <span class="prelude-ty">Result</span><<span class="lifetime">'db</span>, ()> { |
| <a href=#396 id=396 data-nosnippet>396</a> <span class="kw">match </span>id { |
| <a href=#397 id=397 data-nosnippet>397</a> <span class="number">318 </span>=> { |
| <a href=#398 id=398 data-nosnippet>398</a> <span class="comment">// SYS_getrandom |
| <a href=#399 id=399 data-nosnippet>399</a> </span><span class="kw">let </span>[buf, len, _flags] = args <span class="kw">else </span>{ |
| <a href=#400 id=400 data-nosnippet>400</a> <span class="kw">return </span><span class="prelude-val">Err</span>(MirEvalError::InternalError( |
| <a href=#401 id=401 data-nosnippet>401</a> <span class="string">"SYS_getrandom args are not provided"</span>.into(), |
| <a href=#402 id=402 data-nosnippet>402</a> )); |
| <a href=#403 id=403 data-nosnippet>403</a> }; |
| <a href=#404 id=404 data-nosnippet>404</a> <span class="kw">let </span>addr = Address::from_bytes(buf.get(<span class="self">self</span>)<span class="question-mark">?</span>)<span class="question-mark">?</span>; |
| <a href=#405 id=405 data-nosnippet>405</a> <span class="kw">let </span>size = <span class="macro">from_bytes!</span>(usize, len.get(<span class="self">self</span>)<span class="question-mark">?</span>); |
| <a href=#406 id=406 data-nosnippet>406</a> <span class="kw">for </span>i <span class="kw">in </span><span class="number">0</span>..size { |
| <a href=#407 id=407 data-nosnippet>407</a> <span class="kw">let </span>rand_byte = <span class="self">self</span>.random_state.rand_u64() <span class="kw">as </span>u8; |
| <a href=#408 id=408 data-nosnippet>408</a> <span class="self">self</span>.write_memory(addr.offset(i), <span class="kw-2">&</span>[rand_byte])<span class="question-mark">?</span>; |
| <a href=#409 id=409 data-nosnippet>409</a> } |
| <a href=#410 id=410 data-nosnippet>410</a> destination.write_from_interval(<span class="self">self</span>, len.interval) |
| <a href=#411 id=411 data-nosnippet>411</a> } |
| <a href=#412 id=412 data-nosnippet>412</a> <span class="kw">_ </span>=> { |
| <a href=#413 id=413 data-nosnippet>413</a> <span class="macro">not_supported!</span>(<span class="string">"Unknown syscall id {id:?}"</span>) |
| <a href=#414 id=414 data-nosnippet>414</a> } |
| <a href=#415 id=415 data-nosnippet>415</a> } |
| <a href=#416 id=416 data-nosnippet>416</a> } |
| <a href=#417 id=417 data-nosnippet>417</a> |
| <a href=#418 id=418 data-nosnippet>418</a> <span class="kw">fn </span>exec_extern_c( |
| <a href=#419 id=419 data-nosnippet>419</a> <span class="kw-2">&mut </span><span class="self">self</span>, |
| <a href=#420 id=420 data-nosnippet>420</a> as_str: <span class="kw-2">&</span>str, |
| <a href=#421 id=421 data-nosnippet>421</a> args: <span class="kw-2">&</span>[IntervalAndTy<<span class="lifetime">'db</span>>], |
| <a href=#422 id=422 data-nosnippet>422</a> _generic_args: GenericArgs<<span class="lifetime">'db</span>>, |
| <a href=#423 id=423 data-nosnippet>423</a> destination: Interval, |
| <a href=#424 id=424 data-nosnippet>424</a> locals: <span class="kw-2">&</span>Locals<<span class="lifetime">'db</span>>, |
| <a href=#425 id=425 data-nosnippet>425</a> span: MirSpan, |
| <a href=#426 id=426 data-nosnippet>426</a> ) -> <span class="prelude-ty">Result</span><<span class="lifetime">'db</span>, ()> { |
| <a href=#427 id=427 data-nosnippet>427</a> <span class="kw">match </span>as_str { |
| <a href=#428 id=428 data-nosnippet>428</a> <span class="string">"memcmp" </span>=> { |
| <a href=#429 id=429 data-nosnippet>429</a> <span class="kw">let </span>[ptr1, ptr2, size] = args <span class="kw">else </span>{ |
| <a href=#430 id=430 data-nosnippet>430</a> <span class="kw">return </span><span class="prelude-val">Err</span>(MirEvalError::InternalError(<span class="string">"memcmp args are not provided"</span>.into())); |
| <a href=#431 id=431 data-nosnippet>431</a> }; |
| <a href=#432 id=432 data-nosnippet>432</a> <span class="kw">let </span>addr1 = Address::from_bytes(ptr1.get(<span class="self">self</span>)<span class="question-mark">?</span>)<span class="question-mark">?</span>; |
| <a href=#433 id=433 data-nosnippet>433</a> <span class="kw">let </span>addr2 = Address::from_bytes(ptr2.get(<span class="self">self</span>)<span class="question-mark">?</span>)<span class="question-mark">?</span>; |
| <a href=#434 id=434 data-nosnippet>434</a> <span class="kw">let </span>size = <span class="macro">from_bytes!</span>(usize, size.get(<span class="self">self</span>)<span class="question-mark">?</span>); |
| <a href=#435 id=435 data-nosnippet>435</a> <span class="kw">let </span>slice1 = <span class="self">self</span>.read_memory(addr1, size)<span class="question-mark">?</span>; |
| <a href=#436 id=436 data-nosnippet>436</a> <span class="kw">let </span>slice2 = <span class="self">self</span>.read_memory(addr2, size)<span class="question-mark">?</span>; |
| <a href=#437 id=437 data-nosnippet>437</a> <span class="kw">let </span>r: i128 = <span class="kw">match </span>slice1.cmp(slice2) { |
| <a href=#438 id=438 data-nosnippet>438</a> cmp::Ordering::Less => -<span class="number">1</span>, |
| <a href=#439 id=439 data-nosnippet>439</a> cmp::Ordering::Equal => <span class="number">0</span>, |
| <a href=#440 id=440 data-nosnippet>440</a> cmp::Ordering::Greater => <span class="number">1</span>, |
| <a href=#441 id=441 data-nosnippet>441</a> }; |
| <a href=#442 id=442 data-nosnippet>442</a> destination.write_from_bytes(<span class="self">self</span>, <span class="kw-2">&</span>r.to_le_bytes()[..destination.size]) |
| <a href=#443 id=443 data-nosnippet>443</a> } |
| <a href=#444 id=444 data-nosnippet>444</a> <span class="string">"write" </span>=> { |
| <a href=#445 id=445 data-nosnippet>445</a> <span class="kw">let </span>[fd, ptr, len] = args <span class="kw">else </span>{ |
| <a href=#446 id=446 data-nosnippet>446</a> <span class="kw">return </span><span class="prelude-val">Err</span>(MirEvalError::InternalError( |
| <a href=#447 id=447 data-nosnippet>447</a> <span class="string">"libc::write args are not provided"</span>.into(), |
| <a href=#448 id=448 data-nosnippet>448</a> )); |
| <a href=#449 id=449 data-nosnippet>449</a> }; |
| <a href=#450 id=450 data-nosnippet>450</a> <span class="kw">let </span>fd = u128::from_le_bytes(pad16(fd.get(<span class="self">self</span>)<span class="question-mark">?</span>, <span class="bool-val">false</span>)); |
| <a href=#451 id=451 data-nosnippet>451</a> <span class="kw">let </span>interval = Interval { |
| <a href=#452 id=452 data-nosnippet>452</a> addr: Address::from_bytes(ptr.get(<span class="self">self</span>)<span class="question-mark">?</span>)<span class="question-mark">?</span>, |
| <a href=#453 id=453 data-nosnippet>453</a> size: <span class="macro">from_bytes!</span>(usize, len.get(<span class="self">self</span>)<span class="question-mark">?</span>), |
| <a href=#454 id=454 data-nosnippet>454</a> }; |
| <a href=#455 id=455 data-nosnippet>455</a> <span class="kw">match </span>fd { |
| <a href=#456 id=456 data-nosnippet>456</a> <span class="number">1 </span>=> { |
| <a href=#457 id=457 data-nosnippet>457</a> <span class="self">self</span>.write_to_stdout(interval)<span class="question-mark">?</span>; |
| <a href=#458 id=458 data-nosnippet>458</a> } |
| <a href=#459 id=459 data-nosnippet>459</a> <span class="number">2 </span>=> { |
| <a href=#460 id=460 data-nosnippet>460</a> <span class="self">self</span>.write_to_stderr(interval)<span class="question-mark">?</span>; |
| <a href=#461 id=461 data-nosnippet>461</a> } |
| <a href=#462 id=462 data-nosnippet>462</a> <span class="kw">_ </span>=> <span class="macro">not_supported!</span>(<span class="string">"write to arbitrary file descriptor"</span>), |
| <a href=#463 id=463 data-nosnippet>463</a> } |
| <a href=#464 id=464 data-nosnippet>464</a> destination.write_from_interval(<span class="self">self</span>, len.interval)<span class="question-mark">?</span>; |
| <a href=#465 id=465 data-nosnippet>465</a> <span class="prelude-val">Ok</span>(()) |
| <a href=#466 id=466 data-nosnippet>466</a> } |
| <a href=#467 id=467 data-nosnippet>467</a> <span class="string">"pthread_key_create" </span>=> { |
| <a href=#468 id=468 data-nosnippet>468</a> <span class="kw">let </span>key = <span class="self">self</span>.thread_local_storage.create_key(); |
| <a href=#469 id=469 data-nosnippet>469</a> <span class="kw">let </span><span class="prelude-val">Some</span>(arg0) = args.first() <span class="kw">else </span>{ |
| <a href=#470 id=470 data-nosnippet>470</a> <span class="kw">return </span><span class="prelude-val">Err</span>(MirEvalError::InternalError( |
| <a href=#471 id=471 data-nosnippet>471</a> <span class="string">"pthread_key_create arg0 is not provided"</span>.into(), |
| <a href=#472 id=472 data-nosnippet>472</a> )); |
| <a href=#473 id=473 data-nosnippet>473</a> }; |
| <a href=#474 id=474 data-nosnippet>474</a> <span class="kw">let </span>arg0_addr = Address::from_bytes(arg0.get(<span class="self">self</span>)<span class="question-mark">?</span>)<span class="question-mark">?</span>; |
| <a href=#475 id=475 data-nosnippet>475</a> <span class="kw">let </span>key_ty = <span class="kw">if let </span><span class="prelude-val">Some</span>((ty, ..)) = arg0.ty.as_reference_or_ptr() { |
| <a href=#476 id=476 data-nosnippet>476</a> ty |
| <a href=#477 id=477 data-nosnippet>477</a> } <span class="kw">else </span>{ |
| <a href=#478 id=478 data-nosnippet>478</a> <span class="kw">return </span><span class="prelude-val">Err</span>(MirEvalError::InternalError( |
| <a href=#479 id=479 data-nosnippet>479</a> <span class="string">"pthread_key_create arg0 is not a pointer"</span>.into(), |
| <a href=#480 id=480 data-nosnippet>480</a> )); |
| <a href=#481 id=481 data-nosnippet>481</a> }; |
| <a href=#482 id=482 data-nosnippet>482</a> <span class="kw">let </span>arg0_interval = Interval::new( |
| <a href=#483 id=483 data-nosnippet>483</a> arg0_addr, |
| <a href=#484 id=484 data-nosnippet>484</a> <span class="self">self</span>.size_of_sized(key_ty, locals, <span class="string">"pthread_key_create key arg"</span>)<span class="question-mark">?</span>, |
| <a href=#485 id=485 data-nosnippet>485</a> ); |
| <a href=#486 id=486 data-nosnippet>486</a> arg0_interval.write_from_bytes(<span class="self">self</span>, <span class="kw-2">&</span>key.to_le_bytes()[<span class="number">0</span>..arg0_interval.size])<span class="question-mark">?</span>; |
| <a href=#487 id=487 data-nosnippet>487</a> <span class="comment">// return 0 as success |
| <a href=#488 id=488 data-nosnippet>488</a> </span>destination.write_from_bytes(<span class="self">self</span>, <span class="kw-2">&</span><span class="number">0u64</span>.to_le_bytes()[<span class="number">0</span>..destination.size])<span class="question-mark">?</span>; |
| <a href=#489 id=489 data-nosnippet>489</a> <span class="prelude-val">Ok</span>(()) |
| <a href=#490 id=490 data-nosnippet>490</a> } |
| <a href=#491 id=491 data-nosnippet>491</a> <span class="string">"pthread_getspecific" </span>=> { |
| <a href=#492 id=492 data-nosnippet>492</a> <span class="kw">let </span><span class="prelude-val">Some</span>(arg0) = args.first() <span class="kw">else </span>{ |
| <a href=#493 id=493 data-nosnippet>493</a> <span class="kw">return </span><span class="prelude-val">Err</span>(MirEvalError::InternalError( |
| <a href=#494 id=494 data-nosnippet>494</a> <span class="string">"pthread_getspecific arg0 is not provided"</span>.into(), |
| <a href=#495 id=495 data-nosnippet>495</a> )); |
| <a href=#496 id=496 data-nosnippet>496</a> }; |
| <a href=#497 id=497 data-nosnippet>497</a> <span class="kw">let </span>key = <span class="macro">from_bytes!</span>(usize, <span class="kw-2">&</span>pad16(arg0.get(<span class="self">self</span>)<span class="question-mark">?</span>, <span class="bool-val">false</span>)[<span class="number">0</span>..<span class="number">8</span>]); |
| <a href=#498 id=498 data-nosnippet>498</a> <span class="kw">let </span>value = <span class="self">self</span>.thread_local_storage.get_key(key)<span class="question-mark">?</span>; |
| <a href=#499 id=499 data-nosnippet>499</a> destination.write_from_bytes(<span class="self">self</span>, <span class="kw-2">&</span>value.to_le_bytes()[<span class="number">0</span>..destination.size])<span class="question-mark">?</span>; |
| <a href=#500 id=500 data-nosnippet>500</a> <span class="prelude-val">Ok</span>(()) |
| <a href=#501 id=501 data-nosnippet>501</a> } |
| <a href=#502 id=502 data-nosnippet>502</a> <span class="string">"pthread_setspecific" </span>=> { |
| <a href=#503 id=503 data-nosnippet>503</a> <span class="kw">let </span><span class="prelude-val">Some</span>(arg0) = args.first() <span class="kw">else </span>{ |
| <a href=#504 id=504 data-nosnippet>504</a> <span class="kw">return </span><span class="prelude-val">Err</span>(MirEvalError::InternalError( |
| <a href=#505 id=505 data-nosnippet>505</a> <span class="string">"pthread_setspecific arg0 is not provided"</span>.into(), |
| <a href=#506 id=506 data-nosnippet>506</a> )); |
| <a href=#507 id=507 data-nosnippet>507</a> }; |
| <a href=#508 id=508 data-nosnippet>508</a> <span class="kw">let </span>key = <span class="macro">from_bytes!</span>(usize, <span class="kw-2">&</span>pad16(arg0.get(<span class="self">self</span>)<span class="question-mark">?</span>, <span class="bool-val">false</span>)[<span class="number">0</span>..<span class="number">8</span>]); |
| <a href=#509 id=509 data-nosnippet>509</a> <span class="kw">let </span><span class="prelude-val">Some</span>(arg1) = args.get(<span class="number">1</span>) <span class="kw">else </span>{ |
| <a href=#510 id=510 data-nosnippet>510</a> <span class="kw">return </span><span class="prelude-val">Err</span>(MirEvalError::InternalError( |
| <a href=#511 id=511 data-nosnippet>511</a> <span class="string">"pthread_setspecific arg1 is not provided"</span>.into(), |
| <a href=#512 id=512 data-nosnippet>512</a> )); |
| <a href=#513 id=513 data-nosnippet>513</a> }; |
| <a href=#514 id=514 data-nosnippet>514</a> <span class="kw">let </span>value = <span class="macro">from_bytes!</span>(u128, pad16(arg1.get(<span class="self">self</span>)<span class="question-mark">?</span>, <span class="bool-val">false</span>)); |
| <a href=#515 id=515 data-nosnippet>515</a> <span class="self">self</span>.thread_local_storage.set_key(key, value)<span class="question-mark">?</span>; |
| <a href=#516 id=516 data-nosnippet>516</a> <span class="comment">// return 0 as success |
| <a href=#517 id=517 data-nosnippet>517</a> </span>destination.write_from_bytes(<span class="self">self</span>, <span class="kw-2">&</span><span class="number">0u64</span>.to_le_bytes()[<span class="number">0</span>..destination.size])<span class="question-mark">?</span>; |
| <a href=#518 id=518 data-nosnippet>518</a> <span class="prelude-val">Ok</span>(()) |
| <a href=#519 id=519 data-nosnippet>519</a> } |
| <a href=#520 id=520 data-nosnippet>520</a> <span class="string">"pthread_key_delete" </span>=> { |
| <a href=#521 id=521 data-nosnippet>521</a> <span class="comment">// we ignore this currently |
| <a href=#522 id=522 data-nosnippet>522</a> // return 0 as success |
| <a href=#523 id=523 data-nosnippet>523</a> </span>destination.write_from_bytes(<span class="self">self</span>, <span class="kw-2">&</span><span class="number">0u64</span>.to_le_bytes()[<span class="number">0</span>..destination.size])<span class="question-mark">?</span>; |
| <a href=#524 id=524 data-nosnippet>524</a> <span class="prelude-val">Ok</span>(()) |
| <a href=#525 id=525 data-nosnippet>525</a> } |
| <a href=#526 id=526 data-nosnippet>526</a> <span class="string">"syscall" </span>=> { |
| <a href=#527 id=527 data-nosnippet>527</a> <span class="kw">let </span><span class="prelude-val">Some</span>((id, rest)) = args.split_first() <span class="kw">else </span>{ |
| <a href=#528 id=528 data-nosnippet>528</a> <span class="kw">return </span><span class="prelude-val">Err</span>(MirEvalError::InternalError(<span class="string">"syscall arg1 is not provided"</span>.into())); |
| <a href=#529 id=529 data-nosnippet>529</a> }; |
| <a href=#530 id=530 data-nosnippet>530</a> <span class="kw">let </span>id = <span class="macro">from_bytes!</span>(i64, id.get(<span class="self">self</span>)<span class="question-mark">?</span>); |
| <a href=#531 id=531 data-nosnippet>531</a> <span class="self">self</span>.exec_syscall(id, rest, destination, locals, span) |
| <a href=#532 id=532 data-nosnippet>532</a> } |
| <a href=#533 id=533 data-nosnippet>533</a> <span class="string">"sched_getaffinity" </span>=> { |
| <a href=#534 id=534 data-nosnippet>534</a> <span class="kw">let </span>[_pid, _set_size, set] = args <span class="kw">else </span>{ |
| <a href=#535 id=535 data-nosnippet>535</a> <span class="kw">return </span><span class="prelude-val">Err</span>(MirEvalError::InternalError( |
| <a href=#536 id=536 data-nosnippet>536</a> <span class="string">"libc::write args are not provided"</span>.into(), |
| <a href=#537 id=537 data-nosnippet>537</a> )); |
| <a href=#538 id=538 data-nosnippet>538</a> }; |
| <a href=#539 id=539 data-nosnippet>539</a> <span class="kw">let </span>set = Address::from_bytes(set.get(<span class="self">self</span>)<span class="question-mark">?</span>)<span class="question-mark">?</span>; |
| <a href=#540 id=540 data-nosnippet>540</a> <span class="comment">// Only enable core 0 (we are single threaded anyway), which is bitset 0x0000001 |
| <a href=#541 id=541 data-nosnippet>541</a> </span><span class="self">self</span>.write_memory(set, <span class="kw-2">&</span>[<span class="number">1</span>])<span class="question-mark">?</span>; |
| <a href=#542 id=542 data-nosnippet>542</a> <span class="comment">// return 0 as success |
| <a href=#543 id=543 data-nosnippet>543</a> </span><span class="self">self</span>.write_memory_using_ref(destination.addr, destination.size)<span class="question-mark">?</span>.fill(<span class="number">0</span>); |
| <a href=#544 id=544 data-nosnippet>544</a> <span class="prelude-val">Ok</span>(()) |
| <a href=#545 id=545 data-nosnippet>545</a> } |
| <a href=#546 id=546 data-nosnippet>546</a> <span class="string">"getenv" </span>=> { |
| <a href=#547 id=547 data-nosnippet>547</a> <span class="kw">let </span>[name] = args <span class="kw">else </span>{ |
| <a href=#548 id=548 data-nosnippet>548</a> <span class="kw">return </span><span class="prelude-val">Err</span>(MirEvalError::InternalError( |
| <a href=#549 id=549 data-nosnippet>549</a> <span class="string">"libc::write args are not provided"</span>.into(), |
| <a href=#550 id=550 data-nosnippet>550</a> )); |
| <a href=#551 id=551 data-nosnippet>551</a> }; |
| <a href=#552 id=552 data-nosnippet>552</a> <span class="kw">let </span><span class="kw-2">mut </span>name_buf = <span class="macro">vec!</span>[]; |
| <a href=#553 id=553 data-nosnippet>553</a> <span class="kw">let </span>name = { |
| <a href=#554 id=554 data-nosnippet>554</a> <span class="kw">let </span><span class="kw-2">mut </span>index = Address::from_bytes(name.get(<span class="self">self</span>)<span class="question-mark">?</span>)<span class="question-mark">?</span>; |
| <a href=#555 id=555 data-nosnippet>555</a> <span class="kw">loop </span>{ |
| <a href=#556 id=556 data-nosnippet>556</a> <span class="kw">let </span>byte = <span class="self">self</span>.read_memory(index, <span class="number">1</span>)<span class="question-mark">?</span>[<span class="number">0</span>]; |
| <a href=#557 id=557 data-nosnippet>557</a> index = index.offset(<span class="number">1</span>); |
| <a href=#558 id=558 data-nosnippet>558</a> <span class="kw">if </span>byte == <span class="number">0 </span>{ |
| <a href=#559 id=559 data-nosnippet>559</a> <span class="kw">break</span>; |
| <a href=#560 id=560 data-nosnippet>560</a> } |
| <a href=#561 id=561 data-nosnippet>561</a> name_buf.push(byte); |
| <a href=#562 id=562 data-nosnippet>562</a> } |
| <a href=#563 id=563 data-nosnippet>563</a> String::from_utf8_lossy(<span class="kw-2">&</span>name_buf) |
| <a href=#564 id=564 data-nosnippet>564</a> }; |
| <a href=#565 id=565 data-nosnippet>565</a> <span class="kw">let </span>value = <span class="self">self</span>.crate_id.env(<span class="self">self</span>.db).get(<span class="kw-2">&</span>name); |
| <a href=#566 id=566 data-nosnippet>566</a> <span class="kw">match </span>value { |
| <a href=#567 id=567 data-nosnippet>567</a> <span class="prelude-val">None </span>=> { |
| <a href=#568 id=568 data-nosnippet>568</a> <span class="comment">// Write null as fail |
| <a href=#569 id=569 data-nosnippet>569</a> </span><span class="self">self</span>.write_memory_using_ref(destination.addr, destination.size)<span class="question-mark">?</span>.fill(<span class="number">0</span>); |
| <a href=#570 id=570 data-nosnippet>570</a> } |
| <a href=#571 id=571 data-nosnippet>571</a> <span class="prelude-val">Some</span>(<span class="kw-2">mut </span>value) => { |
| <a href=#572 id=572 data-nosnippet>572</a> value.push(<span class="string">'\0'</span>); |
| <a href=#573 id=573 data-nosnippet>573</a> <span class="kw">let </span>addr = <span class="self">self</span>.heap_allocate(value.len(), <span class="number">1</span>)<span class="question-mark">?</span>; |
| <a href=#574 id=574 data-nosnippet>574</a> <span class="self">self</span>.write_memory(addr, value.as_bytes())<span class="question-mark">?</span>; |
| <a href=#575 id=575 data-nosnippet>575</a> <span class="self">self</span>.write_memory(destination.addr, <span class="kw-2">&</span>addr.to_bytes())<span class="question-mark">?</span>; |
| <a href=#576 id=576 data-nosnippet>576</a> } |
| <a href=#577 id=577 data-nosnippet>577</a> } |
| <a href=#578 id=578 data-nosnippet>578</a> <span class="prelude-val">Ok</span>(()) |
| <a href=#579 id=579 data-nosnippet>579</a> } |
| <a href=#580 id=580 data-nosnippet>580</a> <span class="kw">_ </span>=> <span class="macro">not_supported!</span>(<span class="string">"unknown external function {as_str}"</span>), |
| <a href=#581 id=581 data-nosnippet>581</a> } |
| <a href=#582 id=582 data-nosnippet>582</a> } |
| <a href=#583 id=583 data-nosnippet>583</a> |
| <a href=#584 id=584 data-nosnippet>584</a> <span class="kw">fn </span>exec_intrinsic( |
| <a href=#585 id=585 data-nosnippet>585</a> <span class="kw-2">&mut </span><span class="self">self</span>, |
| <a href=#586 id=586 data-nosnippet>586</a> name: <span class="kw-2">&</span>str, |
| <a href=#587 id=587 data-nosnippet>587</a> args: <span class="kw-2">&</span>[IntervalAndTy<<span class="lifetime">'db</span>>], |
| <a href=#588 id=588 data-nosnippet>588</a> generic_args: GenericArgs<<span class="lifetime">'db</span>>, |
| <a href=#589 id=589 data-nosnippet>589</a> destination: Interval, |
| <a href=#590 id=590 data-nosnippet>590</a> locals: <span class="kw-2">&</span>Locals<<span class="lifetime">'db</span>>, |
| <a href=#591 id=591 data-nosnippet>591</a> span: MirSpan, |
| <a href=#592 id=592 data-nosnippet>592</a> needs_override: bool, |
| <a href=#593 id=593 data-nosnippet>593</a> ) -> <span class="prelude-ty">Result</span><<span class="lifetime">'db</span>, bool> { |
| <a href=#594 id=594 data-nosnippet>594</a> <span class="kw">if let </span><span class="prelude-val">Some</span>(name) = name.strip_prefix(<span class="string">"atomic_"</span>) { |
| <a href=#595 id=595 data-nosnippet>595</a> <span class="kw">return </span><span class="self">self |
| <a href=#596 id=596 data-nosnippet>596</a> </span>.exec_atomic_intrinsic(name, args, generic_args, destination, locals, span) |
| <a href=#597 id=597 data-nosnippet>597</a> .map(|()| <span class="bool-val">true</span>); |
| <a href=#598 id=598 data-nosnippet>598</a> } |
| <a href=#599 id=599 data-nosnippet>599</a> <span class="kw">if let </span><span class="prelude-val">Some</span>(name) = name.strip_prefix(<span class="string">"simd_"</span>) { |
| <a href=#600 id=600 data-nosnippet>600</a> <span class="kw">return </span><span class="self">self |
| <a href=#601 id=601 data-nosnippet>601</a> </span>.exec_simd_intrinsic(name, args, generic_args, destination, locals, span) |
| <a href=#602 id=602 data-nosnippet>602</a> .map(|()| <span class="bool-val">true</span>); |
| <a href=#603 id=603 data-nosnippet>603</a> } |
| <a href=#604 id=604 data-nosnippet>604</a> <span class="comment">// FIXME(#17451): Add `f16` and `f128` intrinsics. |
| <a href=#605 id=605 data-nosnippet>605</a> </span><span class="kw">if let </span><span class="prelude-val">Some</span>(name) = name.strip_suffix(<span class="string">"f64"</span>) { |
| <a href=#606 id=606 data-nosnippet>606</a> <span class="kw">let </span>result = <span class="kw">match </span>name { |
| <a href=#607 id=607 data-nosnippet>607</a> <span class="string">"sqrt" </span>| <span class="string">"sin" </span>| <span class="string">"cos" </span>| <span class="string">"exp" </span>| <span class="string">"exp2" </span>| <span class="string">"log" </span>| <span class="string">"log10" </span>| <span class="string">"log2" </span>| <span class="string">"fabs" |
| <a href=#608 id=608 data-nosnippet>608</a> </span>| <span class="string">"floor" </span>| <span class="string">"ceil" </span>| <span class="string">"trunc" </span>| <span class="string">"rint" </span>| <span class="string">"nearbyint" </span>| <span class="string">"round" </span>| <span class="string">"roundeven" </span>=> { |
| <a href=#609 id=609 data-nosnippet>609</a> <span class="kw">let </span>[arg] = args <span class="kw">else </span>{ |
| <a href=#610 id=610 data-nosnippet>610</a> <span class="kw">return </span><span class="prelude-val">Err</span>(MirEvalError::InternalError( |
| <a href=#611 id=611 data-nosnippet>611</a> <span class="string">"f64 intrinsic signature doesn't match fn (f64) -> f64"</span>.into(), |
| <a href=#612 id=612 data-nosnippet>612</a> )); |
| <a href=#613 id=613 data-nosnippet>613</a> }; |
| <a href=#614 id=614 data-nosnippet>614</a> <span class="kw">let </span>arg = <span class="macro">from_bytes!</span>(f64, arg.get(<span class="self">self</span>)<span class="question-mark">?</span>); |
| <a href=#615 id=615 data-nosnippet>615</a> <span class="kw">match </span>name { |
| <a href=#616 id=616 data-nosnippet>616</a> <span class="string">"sqrt" </span>=> arg.sqrt(), |
| <a href=#617 id=617 data-nosnippet>617</a> <span class="string">"sin" </span>=> arg.sin(), |
| <a href=#618 id=618 data-nosnippet>618</a> <span class="string">"cos" </span>=> arg.cos(), |
| <a href=#619 id=619 data-nosnippet>619</a> <span class="string">"exp" </span>=> arg.exp(), |
| <a href=#620 id=620 data-nosnippet>620</a> <span class="string">"exp2" </span>=> arg.exp2(), |
| <a href=#621 id=621 data-nosnippet>621</a> <span class="string">"log" </span>=> arg.ln(), |
| <a href=#622 id=622 data-nosnippet>622</a> <span class="string">"log10" </span>=> arg.log10(), |
| <a href=#623 id=623 data-nosnippet>623</a> <span class="string">"log2" </span>=> arg.log2(), |
| <a href=#624 id=624 data-nosnippet>624</a> <span class="string">"fabs" </span>=> arg.abs(), |
| <a href=#625 id=625 data-nosnippet>625</a> <span class="string">"floor" </span>=> arg.floor(), |
| <a href=#626 id=626 data-nosnippet>626</a> <span class="string">"ceil" </span>=> arg.ceil(), |
| <a href=#627 id=627 data-nosnippet>627</a> <span class="string">"trunc" </span>=> arg.trunc(), |
| <a href=#628 id=628 data-nosnippet>628</a> <span class="comment">// FIXME: these rounds should be different, but only `.round()` is stable now. |
| <a href=#629 id=629 data-nosnippet>629</a> </span><span class="string">"rint" </span>=> arg.round(), |
| <a href=#630 id=630 data-nosnippet>630</a> <span class="string">"nearbyint" </span>=> arg.round(), |
| <a href=#631 id=631 data-nosnippet>631</a> <span class="string">"round" </span>=> arg.round(), |
| <a href=#632 id=632 data-nosnippet>632</a> <span class="string">"roundeven" </span>=> arg.round(), |
| <a href=#633 id=633 data-nosnippet>633</a> <span class="kw">_ </span>=> <span class="macro">unreachable!</span>(), |
| <a href=#634 id=634 data-nosnippet>634</a> } |
| <a href=#635 id=635 data-nosnippet>635</a> } |
| <a href=#636 id=636 data-nosnippet>636</a> <span class="string">"pow" </span>| <span class="string">"minnum" </span>| <span class="string">"maxnum" </span>| <span class="string">"copysign" </span>=> { |
| <a href=#637 id=637 data-nosnippet>637</a> <span class="kw">let </span>[arg1, arg2] = args <span class="kw">else </span>{ |
| <a href=#638 id=638 data-nosnippet>638</a> <span class="kw">return </span><span class="prelude-val">Err</span>(MirEvalError::InternalError( |
| <a href=#639 id=639 data-nosnippet>639</a> <span class="string">"f64 intrinsic signature doesn't match fn (f64, f64) -> f64"</span>.into(), |
| <a href=#640 id=640 data-nosnippet>640</a> )); |
| <a href=#641 id=641 data-nosnippet>641</a> }; |
| <a href=#642 id=642 data-nosnippet>642</a> <span class="kw">let </span>arg1 = <span class="macro">from_bytes!</span>(f64, arg1.get(<span class="self">self</span>)<span class="question-mark">?</span>); |
| <a href=#643 id=643 data-nosnippet>643</a> <span class="kw">let </span>arg2 = <span class="macro">from_bytes!</span>(f64, arg2.get(<span class="self">self</span>)<span class="question-mark">?</span>); |
| <a href=#644 id=644 data-nosnippet>644</a> <span class="kw">match </span>name { |
| <a href=#645 id=645 data-nosnippet>645</a> <span class="string">"pow" </span>=> arg1.powf(arg2), |
| <a href=#646 id=646 data-nosnippet>646</a> <span class="string">"minnum" </span>=> arg1.min(arg2), |
| <a href=#647 id=647 data-nosnippet>647</a> <span class="string">"maxnum" </span>=> arg1.max(arg2), |
| <a href=#648 id=648 data-nosnippet>648</a> <span class="string">"copysign" </span>=> arg1.copysign(arg2), |
| <a href=#649 id=649 data-nosnippet>649</a> <span class="kw">_ </span>=> <span class="macro">unreachable!</span>(), |
| <a href=#650 id=650 data-nosnippet>650</a> } |
| <a href=#651 id=651 data-nosnippet>651</a> } |
| <a href=#652 id=652 data-nosnippet>652</a> <span class="string">"powi" </span>=> { |
| <a href=#653 id=653 data-nosnippet>653</a> <span class="kw">let </span>[arg1, arg2] = args <span class="kw">else </span>{ |
| <a href=#654 id=654 data-nosnippet>654</a> <span class="kw">return </span><span class="prelude-val">Err</span>(MirEvalError::InternalError( |
| <a href=#655 id=655 data-nosnippet>655</a> <span class="string">"powif64 signature doesn't match fn (f64, i32) -> f64"</span>.into(), |
| <a href=#656 id=656 data-nosnippet>656</a> )); |
| <a href=#657 id=657 data-nosnippet>657</a> }; |
| <a href=#658 id=658 data-nosnippet>658</a> <span class="kw">let </span>arg1 = <span class="macro">from_bytes!</span>(f64, arg1.get(<span class="self">self</span>)<span class="question-mark">?</span>); |
| <a href=#659 id=659 data-nosnippet>659</a> <span class="kw">let </span>arg2 = <span class="macro">from_bytes!</span>(i32, arg2.get(<span class="self">self</span>)<span class="question-mark">?</span>); |
| <a href=#660 id=660 data-nosnippet>660</a> arg1.powi(arg2) |
| <a href=#661 id=661 data-nosnippet>661</a> } |
| <a href=#662 id=662 data-nosnippet>662</a> <span class="string">"fma" </span>=> { |
| <a href=#663 id=663 data-nosnippet>663</a> <span class="kw">let </span>[arg1, arg2, arg3] = args <span class="kw">else </span>{ |
| <a href=#664 id=664 data-nosnippet>664</a> <span class="kw">return </span><span class="prelude-val">Err</span>(MirEvalError::InternalError( |
| <a href=#665 id=665 data-nosnippet>665</a> <span class="string">"fmaf64 signature doesn't match fn (f64, f64, f64) -> f64"</span>.into(), |
| <a href=#666 id=666 data-nosnippet>666</a> )); |
| <a href=#667 id=667 data-nosnippet>667</a> }; |
| <a href=#668 id=668 data-nosnippet>668</a> <span class="kw">let </span>arg1 = <span class="macro">from_bytes!</span>(f64, arg1.get(<span class="self">self</span>)<span class="question-mark">?</span>); |
| <a href=#669 id=669 data-nosnippet>669</a> <span class="kw">let </span>arg2 = <span class="macro">from_bytes!</span>(f64, arg2.get(<span class="self">self</span>)<span class="question-mark">?</span>); |
| <a href=#670 id=670 data-nosnippet>670</a> <span class="kw">let </span>arg3 = <span class="macro">from_bytes!</span>(f64, arg3.get(<span class="self">self</span>)<span class="question-mark">?</span>); |
| <a href=#671 id=671 data-nosnippet>671</a> arg1.mul_add(arg2, arg3) |
| <a href=#672 id=672 data-nosnippet>672</a> } |
| <a href=#673 id=673 data-nosnippet>673</a> <span class="kw">_ </span>=> <span class="macro">not_supported!</span>(<span class="string">"unknown f64 intrinsic {name}"</span>), |
| <a href=#674 id=674 data-nosnippet>674</a> }; |
| <a href=#675 id=675 data-nosnippet>675</a> <span class="kw">return </span>destination.write_from_bytes(<span class="self">self</span>, <span class="kw-2">&</span>result.to_le_bytes()).map(|()| <span class="bool-val">true</span>); |
| <a href=#676 id=676 data-nosnippet>676</a> } |
| <a href=#677 id=677 data-nosnippet>677</a> <span class="kw">if let </span><span class="prelude-val">Some</span>(name) = name.strip_suffix(<span class="string">"f32"</span>) { |
| <a href=#678 id=678 data-nosnippet>678</a> <span class="kw">let </span>result = <span class="kw">match </span>name { |
| <a href=#679 id=679 data-nosnippet>679</a> <span class="string">"sqrt" </span>| <span class="string">"sin" </span>| <span class="string">"cos" </span>| <span class="string">"exp" </span>| <span class="string">"exp2" </span>| <span class="string">"log" </span>| <span class="string">"log10" </span>| <span class="string">"log2" </span>| <span class="string">"fabs" |
| <a href=#680 id=680 data-nosnippet>680</a> </span>| <span class="string">"floor" </span>| <span class="string">"ceil" </span>| <span class="string">"trunc" </span>| <span class="string">"rint" </span>| <span class="string">"nearbyint" </span>| <span class="string">"round" </span>| <span class="string">"roundeven" </span>=> { |
| <a href=#681 id=681 data-nosnippet>681</a> <span class="kw">let </span>[arg] = args <span class="kw">else </span>{ |
| <a href=#682 id=682 data-nosnippet>682</a> <span class="kw">return </span><span class="prelude-val">Err</span>(MirEvalError::InternalError( |
| <a href=#683 id=683 data-nosnippet>683</a> <span class="string">"f32 intrinsic signature doesn't match fn (f32) -> f32"</span>.into(), |
| <a href=#684 id=684 data-nosnippet>684</a> )); |
| <a href=#685 id=685 data-nosnippet>685</a> }; |
| <a href=#686 id=686 data-nosnippet>686</a> <span class="kw">let </span>arg = <span class="macro">from_bytes!</span>(f32, arg.get(<span class="self">self</span>)<span class="question-mark">?</span>); |
| <a href=#687 id=687 data-nosnippet>687</a> <span class="kw">match </span>name { |
| <a href=#688 id=688 data-nosnippet>688</a> <span class="string">"sqrt" </span>=> arg.sqrt(), |
| <a href=#689 id=689 data-nosnippet>689</a> <span class="string">"sin" </span>=> arg.sin(), |
| <a href=#690 id=690 data-nosnippet>690</a> <span class="string">"cos" </span>=> arg.cos(), |
| <a href=#691 id=691 data-nosnippet>691</a> <span class="string">"exp" </span>=> arg.exp(), |
| <a href=#692 id=692 data-nosnippet>692</a> <span class="string">"exp2" </span>=> arg.exp2(), |
| <a href=#693 id=693 data-nosnippet>693</a> <span class="string">"log" </span>=> arg.ln(), |
| <a href=#694 id=694 data-nosnippet>694</a> <span class="string">"log10" </span>=> arg.log10(), |
| <a href=#695 id=695 data-nosnippet>695</a> <span class="string">"log2" </span>=> arg.log2(), |
| <a href=#696 id=696 data-nosnippet>696</a> <span class="string">"fabs" </span>=> arg.abs(), |
| <a href=#697 id=697 data-nosnippet>697</a> <span class="string">"floor" </span>=> arg.floor(), |
| <a href=#698 id=698 data-nosnippet>698</a> <span class="string">"ceil" </span>=> arg.ceil(), |
| <a href=#699 id=699 data-nosnippet>699</a> <span class="string">"trunc" </span>=> arg.trunc(), |
| <a href=#700 id=700 data-nosnippet>700</a> <span class="comment">// FIXME: these rounds should be different, but only `.round()` is stable now. |
| <a href=#701 id=701 data-nosnippet>701</a> </span><span class="string">"rint" </span>=> arg.round(), |
| <a href=#702 id=702 data-nosnippet>702</a> <span class="string">"nearbyint" </span>=> arg.round(), |
| <a href=#703 id=703 data-nosnippet>703</a> <span class="string">"round" </span>=> arg.round(), |
| <a href=#704 id=704 data-nosnippet>704</a> <span class="string">"roundeven" </span>=> arg.round(), |
| <a href=#705 id=705 data-nosnippet>705</a> <span class="kw">_ </span>=> <span class="macro">unreachable!</span>(), |
| <a href=#706 id=706 data-nosnippet>706</a> } |
| <a href=#707 id=707 data-nosnippet>707</a> } |
| <a href=#708 id=708 data-nosnippet>708</a> <span class="string">"pow" </span>| <span class="string">"minnum" </span>| <span class="string">"maxnum" </span>| <span class="string">"copysign" </span>=> { |
| <a href=#709 id=709 data-nosnippet>709</a> <span class="kw">let </span>[arg1, arg2] = args <span class="kw">else </span>{ |
| <a href=#710 id=710 data-nosnippet>710</a> <span class="kw">return </span><span class="prelude-val">Err</span>(MirEvalError::InternalError( |
| <a href=#711 id=711 data-nosnippet>711</a> <span class="string">"f32 intrinsic signature doesn't match fn (f32, f32) -> f32"</span>.into(), |
| <a href=#712 id=712 data-nosnippet>712</a> )); |
| <a href=#713 id=713 data-nosnippet>713</a> }; |
| <a href=#714 id=714 data-nosnippet>714</a> <span class="kw">let </span>arg1 = <span class="macro">from_bytes!</span>(f32, arg1.get(<span class="self">self</span>)<span class="question-mark">?</span>); |
| <a href=#715 id=715 data-nosnippet>715</a> <span class="kw">let </span>arg2 = <span class="macro">from_bytes!</span>(f32, arg2.get(<span class="self">self</span>)<span class="question-mark">?</span>); |
| <a href=#716 id=716 data-nosnippet>716</a> <span class="kw">match </span>name { |
| <a href=#717 id=717 data-nosnippet>717</a> <span class="string">"pow" </span>=> arg1.powf(arg2), |
| <a href=#718 id=718 data-nosnippet>718</a> <span class="string">"minnum" </span>=> arg1.min(arg2), |
| <a href=#719 id=719 data-nosnippet>719</a> <span class="string">"maxnum" </span>=> arg1.max(arg2), |
| <a href=#720 id=720 data-nosnippet>720</a> <span class="string">"copysign" </span>=> arg1.copysign(arg2), |
| <a href=#721 id=721 data-nosnippet>721</a> <span class="kw">_ </span>=> <span class="macro">unreachable!</span>(), |
| <a href=#722 id=722 data-nosnippet>722</a> } |
| <a href=#723 id=723 data-nosnippet>723</a> } |
| <a href=#724 id=724 data-nosnippet>724</a> <span class="string">"powi" </span>=> { |
| <a href=#725 id=725 data-nosnippet>725</a> <span class="kw">let </span>[arg1, arg2] = args <span class="kw">else </span>{ |
| <a href=#726 id=726 data-nosnippet>726</a> <span class="kw">return </span><span class="prelude-val">Err</span>(MirEvalError::InternalError( |
| <a href=#727 id=727 data-nosnippet>727</a> <span class="string">"powif32 signature doesn't match fn (f32, i32) -> f32"</span>.into(), |
| <a href=#728 id=728 data-nosnippet>728</a> )); |
| <a href=#729 id=729 data-nosnippet>729</a> }; |
| <a href=#730 id=730 data-nosnippet>730</a> <span class="kw">let </span>arg1 = <span class="macro">from_bytes!</span>(f32, arg1.get(<span class="self">self</span>)<span class="question-mark">?</span>); |
| <a href=#731 id=731 data-nosnippet>731</a> <span class="kw">let </span>arg2 = <span class="macro">from_bytes!</span>(i32, arg2.get(<span class="self">self</span>)<span class="question-mark">?</span>); |
| <a href=#732 id=732 data-nosnippet>732</a> arg1.powi(arg2) |
| <a href=#733 id=733 data-nosnippet>733</a> } |
| <a href=#734 id=734 data-nosnippet>734</a> <span class="string">"fma" </span>=> { |
| <a href=#735 id=735 data-nosnippet>735</a> <span class="kw">let </span>[arg1, arg2, arg3] = args <span class="kw">else </span>{ |
| <a href=#736 id=736 data-nosnippet>736</a> <span class="kw">return </span><span class="prelude-val">Err</span>(MirEvalError::InternalError( |
| <a href=#737 id=737 data-nosnippet>737</a> <span class="string">"fmaf32 signature doesn't match fn (f32, f32, f32) -> f32"</span>.into(), |
| <a href=#738 id=738 data-nosnippet>738</a> )); |
| <a href=#739 id=739 data-nosnippet>739</a> }; |
| <a href=#740 id=740 data-nosnippet>740</a> <span class="kw">let </span>arg1 = <span class="macro">from_bytes!</span>(f32, arg1.get(<span class="self">self</span>)<span class="question-mark">?</span>); |
| <a href=#741 id=741 data-nosnippet>741</a> <span class="kw">let </span>arg2 = <span class="macro">from_bytes!</span>(f32, arg2.get(<span class="self">self</span>)<span class="question-mark">?</span>); |
| <a href=#742 id=742 data-nosnippet>742</a> <span class="kw">let </span>arg3 = <span class="macro">from_bytes!</span>(f32, arg3.get(<span class="self">self</span>)<span class="question-mark">?</span>); |
| <a href=#743 id=743 data-nosnippet>743</a> arg1.mul_add(arg2, arg3) |
| <a href=#744 id=744 data-nosnippet>744</a> } |
| <a href=#745 id=745 data-nosnippet>745</a> <span class="kw">_ </span>=> <span class="macro">not_supported!</span>(<span class="string">"unknown f32 intrinsic {name}"</span>), |
| <a href=#746 id=746 data-nosnippet>746</a> }; |
| <a href=#747 id=747 data-nosnippet>747</a> <span class="kw">return </span>destination.write_from_bytes(<span class="self">self</span>, <span class="kw-2">&</span>result.to_le_bytes()).map(|()| <span class="bool-val">true</span>); |
| <a href=#748 id=748 data-nosnippet>748</a> } |
| <a href=#749 id=749 data-nosnippet>749</a> <span class="kw">match </span>name { |
| <a href=#750 id=750 data-nosnippet>750</a> <span class="string">"size_of" </span>=> { |
| <a href=#751 id=751 data-nosnippet>751</a> <span class="kw">let </span><span class="prelude-val">Some</span>(ty) = generic_args.as_slice().first().and_then(|it| it.ty()) <span class="kw">else </span>{ |
| <a href=#752 id=752 data-nosnippet>752</a> <span class="kw">return </span><span class="prelude-val">Err</span>(MirEvalError::InternalError( |
| <a href=#753 id=753 data-nosnippet>753</a> <span class="string">"size_of generic arg is not provided"</span>.into(), |
| <a href=#754 id=754 data-nosnippet>754</a> )); |
| <a href=#755 id=755 data-nosnippet>755</a> }; |
| <a href=#756 id=756 data-nosnippet>756</a> <span class="kw">let </span>size = <span class="self">self</span>.size_of_sized(ty, locals, <span class="string">"size_of arg"</span>)<span class="question-mark">?</span>; |
| <a href=#757 id=757 data-nosnippet>757</a> destination.write_from_bytes(<span class="self">self</span>, <span class="kw-2">&</span>size.to_le_bytes()[<span class="number">0</span>..destination.size]) |
| <a href=#758 id=758 data-nosnippet>758</a> } |
| <a href=#759 id=759 data-nosnippet>759</a> <span class="comment">// FIXME: `min_align_of` was renamed to `align_of` in Rust 1.89 |
| <a href=#760 id=760 data-nosnippet>760</a> // (https://github.com/rust-lang/rust/pull/142410) |
| <a href=#761 id=761 data-nosnippet>761</a> </span><span class="string">"min_align_of" </span>| <span class="string">"align_of" </span>=> { |
| <a href=#762 id=762 data-nosnippet>762</a> <span class="kw">let </span><span class="prelude-val">Some</span>(ty) = generic_args.as_slice().first().and_then(|it| it.ty()) <span class="kw">else </span>{ |
| <a href=#763 id=763 data-nosnippet>763</a> <span class="kw">return </span><span class="prelude-val">Err</span>(MirEvalError::InternalError( |
| <a href=#764 id=764 data-nosnippet>764</a> <span class="string">"align_of generic arg is not provided"</span>.into(), |
| <a href=#765 id=765 data-nosnippet>765</a> )); |
| <a href=#766 id=766 data-nosnippet>766</a> }; |
| <a href=#767 id=767 data-nosnippet>767</a> <span class="kw">let </span>align = <span class="self">self</span>.layout(ty)<span class="question-mark">?</span>.align.bytes(); |
| <a href=#768 id=768 data-nosnippet>768</a> destination.write_from_bytes(<span class="self">self</span>, <span class="kw-2">&</span>align.to_le_bytes()[<span class="number">0</span>..destination.size]) |
| <a href=#769 id=769 data-nosnippet>769</a> } |
| <a href=#770 id=770 data-nosnippet>770</a> <span class="string">"size_of_val" </span>=> { |
| <a href=#771 id=771 data-nosnippet>771</a> <span class="kw">let </span><span class="prelude-val">Some</span>(ty) = generic_args.as_slice().first().and_then(|it| it.ty()) <span class="kw">else </span>{ |
| <a href=#772 id=772 data-nosnippet>772</a> <span class="kw">return </span><span class="prelude-val">Err</span>(MirEvalError::InternalError( |
| <a href=#773 id=773 data-nosnippet>773</a> <span class="string">"size_of_val generic arg is not provided"</span>.into(), |
| <a href=#774 id=774 data-nosnippet>774</a> )); |
| <a href=#775 id=775 data-nosnippet>775</a> }; |
| <a href=#776 id=776 data-nosnippet>776</a> <span class="kw">let </span>[arg] = args <span class="kw">else </span>{ |
| <a href=#777 id=777 data-nosnippet>777</a> <span class="kw">return </span><span class="prelude-val">Err</span>(MirEvalError::InternalError( |
| <a href=#778 id=778 data-nosnippet>778</a> <span class="string">"size_of_val args are not provided"</span>.into(), |
| <a href=#779 id=779 data-nosnippet>779</a> )); |
| <a href=#780 id=780 data-nosnippet>780</a> }; |
| <a href=#781 id=781 data-nosnippet>781</a> <span class="kw">if let </span><span class="prelude-val">Some</span>((size, <span class="kw">_</span>)) = <span class="self">self</span>.size_align_of(ty, locals)<span class="question-mark">? </span>{ |
| <a href=#782 id=782 data-nosnippet>782</a> destination.write_from_bytes(<span class="self">self</span>, <span class="kw-2">&</span>size.to_le_bytes()) |
| <a href=#783 id=783 data-nosnippet>783</a> } <span class="kw">else </span>{ |
| <a href=#784 id=784 data-nosnippet>784</a> <span class="kw">let </span>metadata = arg.interval.slice(<span class="self">self</span>.ptr_size()..<span class="self">self</span>.ptr_size() * <span class="number">2</span>); |
| <a href=#785 id=785 data-nosnippet>785</a> <span class="kw">let </span>(size, <span class="kw">_</span>) = <span class="self">self</span>.size_align_of_unsized(ty, metadata, locals)<span class="question-mark">?</span>; |
| <a href=#786 id=786 data-nosnippet>786</a> destination.write_from_bytes(<span class="self">self</span>, <span class="kw-2">&</span>size.to_le_bytes()) |
| <a href=#787 id=787 data-nosnippet>787</a> } |
| <a href=#788 id=788 data-nosnippet>788</a> } |
| <a href=#789 id=789 data-nosnippet>789</a> <span class="comment">// FIXME: `min_align_of_val` was renamed to `align_of_val` in Rust 1.89 |
| <a href=#790 id=790 data-nosnippet>790</a> // (https://github.com/rust-lang/rust/pull/142410) |
| <a href=#791 id=791 data-nosnippet>791</a> </span><span class="string">"min_align_of_val" </span>| <span class="string">"align_of_val" </span>=> { |
| <a href=#792 id=792 data-nosnippet>792</a> <span class="kw">let </span><span class="prelude-val">Some</span>(ty) = generic_args.as_slice().first().and_then(|it| it.ty()) <span class="kw">else </span>{ |
| <a href=#793 id=793 data-nosnippet>793</a> <span class="kw">return </span><span class="prelude-val">Err</span>(MirEvalError::InternalError( |
| <a href=#794 id=794 data-nosnippet>794</a> <span class="string">"align_of_val generic arg is not provided"</span>.into(), |
| <a href=#795 id=795 data-nosnippet>795</a> )); |
| <a href=#796 id=796 data-nosnippet>796</a> }; |
| <a href=#797 id=797 data-nosnippet>797</a> <span class="kw">let </span>[arg] = args <span class="kw">else </span>{ |
| <a href=#798 id=798 data-nosnippet>798</a> <span class="kw">return </span><span class="prelude-val">Err</span>(MirEvalError::InternalError( |
| <a href=#799 id=799 data-nosnippet>799</a> <span class="string">"align_of_val args are not provided"</span>.into(), |
| <a href=#800 id=800 data-nosnippet>800</a> )); |
| <a href=#801 id=801 data-nosnippet>801</a> }; |
| <a href=#802 id=802 data-nosnippet>802</a> <span class="kw">if let </span><span class="prelude-val">Some</span>((<span class="kw">_</span>, align)) = <span class="self">self</span>.size_align_of(ty, locals)<span class="question-mark">? </span>{ |
| <a href=#803 id=803 data-nosnippet>803</a> destination.write_from_bytes(<span class="self">self</span>, <span class="kw-2">&</span>align.to_le_bytes()) |
| <a href=#804 id=804 data-nosnippet>804</a> } <span class="kw">else </span>{ |
| <a href=#805 id=805 data-nosnippet>805</a> <span class="kw">let </span>metadata = arg.interval.slice(<span class="self">self</span>.ptr_size()..<span class="self">self</span>.ptr_size() * <span class="number">2</span>); |
| <a href=#806 id=806 data-nosnippet>806</a> <span class="kw">let </span>(<span class="kw">_</span>, align) = <span class="self">self</span>.size_align_of_unsized(ty, metadata, locals)<span class="question-mark">?</span>; |
| <a href=#807 id=807 data-nosnippet>807</a> destination.write_from_bytes(<span class="self">self</span>, <span class="kw-2">&</span>align.to_le_bytes()) |
| <a href=#808 id=808 data-nosnippet>808</a> } |
| <a href=#809 id=809 data-nosnippet>809</a> } |
| <a href=#810 id=810 data-nosnippet>810</a> <span class="string">"type_name" </span>=> { |
| <a href=#811 id=811 data-nosnippet>811</a> <span class="kw">let </span><span class="prelude-val">Some</span>(ty) = generic_args.as_slice().first().and_then(|it| it.ty()) <span class="kw">else </span>{ |
| <a href=#812 id=812 data-nosnippet>812</a> <span class="kw">return </span><span class="prelude-val">Err</span>(MirEvalError::InternalError( |
| <a href=#813 id=813 data-nosnippet>813</a> <span class="string">"type_name generic arg is not provided"</span>.into(), |
| <a href=#814 id=814 data-nosnippet>814</a> )); |
| <a href=#815 id=815 data-nosnippet>815</a> }; |
| <a href=#816 id=816 data-nosnippet>816</a> <span class="kw">let </span>ty_name = <span class="kw">match </span>ty.display_source_code( |
| <a href=#817 id=817 data-nosnippet>817</a> <span class="self">self</span>.db, |
| <a href=#818 id=818 data-nosnippet>818</a> locals.body.owner.module(<span class="self">self</span>.db), |
| <a href=#819 id=819 data-nosnippet>819</a> <span class="bool-val">true</span>, |
| <a href=#820 id=820 data-nosnippet>820</a> ) { |
| <a href=#821 id=821 data-nosnippet>821</a> <span class="prelude-val">Ok</span>(ty_name) => ty_name, |
| <a href=#822 id=822 data-nosnippet>822</a> <span class="comment">// Fallback to human readable display in case of `Err`. Ideally we want to use `display_source_code` to |
| <a href=#823 id=823 data-nosnippet>823</a> // render full paths. |
| <a href=#824 id=824 data-nosnippet>824</a> </span><span class="prelude-val">Err</span>(<span class="kw">_</span>) => { |
| <a href=#825 id=825 data-nosnippet>825</a> <span class="kw">let </span>krate = locals.body.owner.krate(<span class="self">self</span>.db); |
| <a href=#826 id=826 data-nosnippet>826</a> ty.display(<span class="self">self</span>.db, DisplayTarget::from_crate(<span class="self">self</span>.db, krate)).to_string() |
| <a href=#827 id=827 data-nosnippet>827</a> } |
| <a href=#828 id=828 data-nosnippet>828</a> }; |
| <a href=#829 id=829 data-nosnippet>829</a> <span class="kw">let </span>len = ty_name.len(); |
| <a href=#830 id=830 data-nosnippet>830</a> <span class="kw">let </span>addr = <span class="self">self</span>.heap_allocate(len, <span class="number">1</span>)<span class="question-mark">?</span>; |
| <a href=#831 id=831 data-nosnippet>831</a> <span class="self">self</span>.write_memory(addr, ty_name.as_bytes())<span class="question-mark">?</span>; |
| <a href=#832 id=832 data-nosnippet>832</a> destination.slice(<span class="number">0</span>..<span class="self">self</span>.ptr_size()).write_from_bytes(<span class="self">self</span>, <span class="kw-2">&</span>addr.to_bytes())<span class="question-mark">?</span>; |
| <a href=#833 id=833 data-nosnippet>833</a> destination |
| <a href=#834 id=834 data-nosnippet>834</a> .slice(<span class="self">self</span>.ptr_size()..<span class="number">2 </span>* <span class="self">self</span>.ptr_size()) |
| <a href=#835 id=835 data-nosnippet>835</a> .write_from_bytes(<span class="self">self</span>, <span class="kw-2">&</span>len.to_le_bytes()) |
| <a href=#836 id=836 data-nosnippet>836</a> } |
| <a href=#837 id=837 data-nosnippet>837</a> <span class="string">"needs_drop" </span>=> { |
| <a href=#838 id=838 data-nosnippet>838</a> <span class="kw">let </span><span class="prelude-val">Some</span>(ty) = generic_args.as_slice().first().and_then(|it| it.ty()) <span class="kw">else </span>{ |
| <a href=#839 id=839 data-nosnippet>839</a> <span class="kw">return </span><span class="prelude-val">Err</span>(MirEvalError::InternalError( |
| <a href=#840 id=840 data-nosnippet>840</a> <span class="string">"size_of generic arg is not provided"</span>.into(), |
| <a href=#841 id=841 data-nosnippet>841</a> )); |
| <a href=#842 id=842 data-nosnippet>842</a> }; |
| <a href=#843 id=843 data-nosnippet>843</a> <span class="kw">let </span>result = <span class="kw">match </span>has_drop_glue(<span class="kw-2">&</span><span class="self">self</span>.infcx, ty, <span class="self">self</span>.param_env.param_env) { |
| <a href=#844 id=844 data-nosnippet>844</a> DropGlue::HasDropGlue => <span class="bool-val">true</span>, |
| <a href=#845 id=845 data-nosnippet>845</a> DropGlue::None => <span class="bool-val">false</span>, |
| <a href=#846 id=846 data-nosnippet>846</a> DropGlue::DependOnParams => { |
| <a href=#847 id=847 data-nosnippet>847</a> <span class="macro">never!</span>(<span class="string">"should be fully monomorphized now"</span>); |
| <a href=#848 id=848 data-nosnippet>848</a> <span class="bool-val">true |
| <a href=#849 id=849 data-nosnippet>849</a> </span>} |
| <a href=#850 id=850 data-nosnippet>850</a> }; |
| <a href=#851 id=851 data-nosnippet>851</a> destination.write_from_bytes(<span class="self">self</span>, <span class="kw-2">&</span>[u8::from(result)]) |
| <a href=#852 id=852 data-nosnippet>852</a> } |
| <a href=#853 id=853 data-nosnippet>853</a> <span class="string">"ptr_guaranteed_cmp" </span>=> { |
| <a href=#854 id=854 data-nosnippet>854</a> <span class="comment">// FIXME: this is wrong for const eval, it should return 2 in some |
| <a href=#855 id=855 data-nosnippet>855</a> // cases. |
| <a href=#856 id=856 data-nosnippet>856</a> </span><span class="kw">let </span>[lhs, rhs] = args <span class="kw">else </span>{ |
| <a href=#857 id=857 data-nosnippet>857</a> <span class="kw">return </span><span class="prelude-val">Err</span>(MirEvalError::InternalError( |
| <a href=#858 id=858 data-nosnippet>858</a> <span class="string">"wrapping_add args are not provided"</span>.into(), |
| <a href=#859 id=859 data-nosnippet>859</a> )); |
| <a href=#860 id=860 data-nosnippet>860</a> }; |
| <a href=#861 id=861 data-nosnippet>861</a> <span class="kw">let </span>ans = lhs.get(<span class="self">self</span>)<span class="question-mark">? </span>== rhs.get(<span class="self">self</span>)<span class="question-mark">?</span>; |
| <a href=#862 id=862 data-nosnippet>862</a> destination.write_from_bytes(<span class="self">self</span>, <span class="kw-2">&</span>[u8::from(ans)]) |
| <a href=#863 id=863 data-nosnippet>863</a> } |
| <a href=#864 id=864 data-nosnippet>864</a> <span class="string">"saturating_add" </span>| <span class="string">"saturating_sub" </span>=> { |
| <a href=#865 id=865 data-nosnippet>865</a> <span class="kw">let </span>[lhs, rhs] = args <span class="kw">else </span>{ |
| <a href=#866 id=866 data-nosnippet>866</a> <span class="kw">return </span><span class="prelude-val">Err</span>(MirEvalError::InternalError( |
| <a href=#867 id=867 data-nosnippet>867</a> <span class="string">"saturating_add args are not provided"</span>.into(), |
| <a href=#868 id=868 data-nosnippet>868</a> )); |
| <a href=#869 id=869 data-nosnippet>869</a> }; |
| <a href=#870 id=870 data-nosnippet>870</a> <span class="kw">let </span>lhs = u128::from_le_bytes(pad16(lhs.get(<span class="self">self</span>)<span class="question-mark">?</span>, <span class="bool-val">false</span>)); |
| <a href=#871 id=871 data-nosnippet>871</a> <span class="kw">let </span>rhs = u128::from_le_bytes(pad16(rhs.get(<span class="self">self</span>)<span class="question-mark">?</span>, <span class="bool-val">false</span>)); |
| <a href=#872 id=872 data-nosnippet>872</a> <span class="kw">let </span>ans = <span class="kw">match </span>name { |
| <a href=#873 id=873 data-nosnippet>873</a> <span class="string">"saturating_add" </span>=> lhs.saturating_add(rhs), |
| <a href=#874 id=874 data-nosnippet>874</a> <span class="string">"saturating_sub" </span>=> lhs.saturating_sub(rhs), |
| <a href=#875 id=875 data-nosnippet>875</a> <span class="kw">_ </span>=> <span class="macro">unreachable!</span>(), |
| <a href=#876 id=876 data-nosnippet>876</a> }; |
| <a href=#877 id=877 data-nosnippet>877</a> <span class="kw">let </span>bits = destination.size * <span class="number">8</span>; |
| <a href=#878 id=878 data-nosnippet>878</a> <span class="comment">// FIXME: signed |
| <a href=#879 id=879 data-nosnippet>879</a> </span><span class="kw">let </span>is_signed = <span class="bool-val">false</span>; |
| <a href=#880 id=880 data-nosnippet>880</a> <span class="kw">let </span>mx: u128 = <span class="kw">if </span>is_signed { (<span class="number">1 </span><< (bits - <span class="number">1</span>)) - <span class="number">1 </span>} <span class="kw">else </span>{ (<span class="number">1 </span><< bits) - <span class="number">1 </span>}; |
| <a href=#881 id=881 data-nosnippet>881</a> <span class="comment">// FIXME: signed |
| <a href=#882 id=882 data-nosnippet>882</a> </span><span class="kw">let </span>mn: u128 = <span class="number">0</span>; |
| <a href=#883 id=883 data-nosnippet>883</a> <span class="kw">let </span>ans = cmp::min(mx, cmp::max(mn, ans)); |
| <a href=#884 id=884 data-nosnippet>884</a> destination.write_from_bytes(<span class="self">self</span>, <span class="kw-2">&</span>ans.to_le_bytes()[<span class="number">0</span>..destination.size]) |
| <a href=#885 id=885 data-nosnippet>885</a> } |
| <a href=#886 id=886 data-nosnippet>886</a> <span class="string">"wrapping_add" </span>| <span class="string">"unchecked_add" </span>=> { |
| <a href=#887 id=887 data-nosnippet>887</a> <span class="kw">let </span>[lhs, rhs] = args <span class="kw">else </span>{ |
| <a href=#888 id=888 data-nosnippet>888</a> <span class="kw">return </span><span class="prelude-val">Err</span>(MirEvalError::InternalError( |
| <a href=#889 id=889 data-nosnippet>889</a> <span class="string">"wrapping_add args are not provided"</span>.into(), |
| <a href=#890 id=890 data-nosnippet>890</a> )); |
| <a href=#891 id=891 data-nosnippet>891</a> }; |
| <a href=#892 id=892 data-nosnippet>892</a> <span class="kw">let </span>lhs = u128::from_le_bytes(pad16(lhs.get(<span class="self">self</span>)<span class="question-mark">?</span>, <span class="bool-val">false</span>)); |
| <a href=#893 id=893 data-nosnippet>893</a> <span class="kw">let </span>rhs = u128::from_le_bytes(pad16(rhs.get(<span class="self">self</span>)<span class="question-mark">?</span>, <span class="bool-val">false</span>)); |
| <a href=#894 id=894 data-nosnippet>894</a> <span class="kw">let </span>ans = lhs.wrapping_add(rhs); |
| <a href=#895 id=895 data-nosnippet>895</a> destination.write_from_bytes(<span class="self">self</span>, <span class="kw-2">&</span>ans.to_le_bytes()[<span class="number">0</span>..destination.size]) |
| <a href=#896 id=896 data-nosnippet>896</a> } |
| <a href=#897 id=897 data-nosnippet>897</a> <span class="string">"ptr_offset_from_unsigned" </span>| <span class="string">"ptr_offset_from" </span>=> { |
| <a href=#898 id=898 data-nosnippet>898</a> <span class="kw">let </span>[lhs, rhs] = args <span class="kw">else </span>{ |
| <a href=#899 id=899 data-nosnippet>899</a> <span class="kw">return </span><span class="prelude-val">Err</span>(MirEvalError::InternalError( |
| <a href=#900 id=900 data-nosnippet>900</a> <span class="string">"wrapping_sub args are not provided"</span>.into(), |
| <a href=#901 id=901 data-nosnippet>901</a> )); |
| <a href=#902 id=902 data-nosnippet>902</a> }; |
| <a href=#903 id=903 data-nosnippet>903</a> <span class="kw">let </span>lhs = i128::from_le_bytes(pad16(lhs.get(<span class="self">self</span>)<span class="question-mark">?</span>, <span class="bool-val">false</span>)); |
| <a href=#904 id=904 data-nosnippet>904</a> <span class="kw">let </span>rhs = i128::from_le_bytes(pad16(rhs.get(<span class="self">self</span>)<span class="question-mark">?</span>, <span class="bool-val">false</span>)); |
| <a href=#905 id=905 data-nosnippet>905</a> <span class="kw">let </span>ans = lhs.wrapping_sub(rhs); |
| <a href=#906 id=906 data-nosnippet>906</a> <span class="kw">let </span><span class="prelude-val">Some</span>(ty) = generic_args.as_slice().first().and_then(|it| it.ty()) <span class="kw">else </span>{ |
| <a href=#907 id=907 data-nosnippet>907</a> <span class="kw">return </span><span class="prelude-val">Err</span>(MirEvalError::InternalError( |
| <a href=#908 id=908 data-nosnippet>908</a> <span class="string">"ptr_offset_from generic arg is not provided"</span>.into(), |
| <a href=#909 id=909 data-nosnippet>909</a> )); |
| <a href=#910 id=910 data-nosnippet>910</a> }; |
| <a href=#911 id=911 data-nosnippet>911</a> <span class="kw">let </span>size = <span class="self">self</span>.size_of_sized(ty, locals, <span class="string">"ptr_offset_from arg"</span>)<span class="question-mark">? </span><span class="kw">as </span>i128; |
| <a href=#912 id=912 data-nosnippet>912</a> <span class="kw">let </span>ans = ans / size; |
| <a href=#913 id=913 data-nosnippet>913</a> destination.write_from_bytes(<span class="self">self</span>, <span class="kw-2">&</span>ans.to_le_bytes()[<span class="number">0</span>..destination.size]) |
| <a href=#914 id=914 data-nosnippet>914</a> } |
| <a href=#915 id=915 data-nosnippet>915</a> <span class="string">"wrapping_sub" </span>| <span class="string">"unchecked_sub" </span>=> { |
| <a href=#916 id=916 data-nosnippet>916</a> <span class="kw">let </span>[lhs, rhs] = args <span class="kw">else </span>{ |
| <a href=#917 id=917 data-nosnippet>917</a> <span class="kw">return </span><span class="prelude-val">Err</span>(MirEvalError::InternalError( |
| <a href=#918 id=918 data-nosnippet>918</a> <span class="string">"wrapping_sub args are not provided"</span>.into(), |
| <a href=#919 id=919 data-nosnippet>919</a> )); |
| <a href=#920 id=920 data-nosnippet>920</a> }; |
| <a href=#921 id=921 data-nosnippet>921</a> <span class="kw">let </span>lhs = u128::from_le_bytes(pad16(lhs.get(<span class="self">self</span>)<span class="question-mark">?</span>, <span class="bool-val">false</span>)); |
| <a href=#922 id=922 data-nosnippet>922</a> <span class="kw">let </span>rhs = u128::from_le_bytes(pad16(rhs.get(<span class="self">self</span>)<span class="question-mark">?</span>, <span class="bool-val">false</span>)); |
| <a href=#923 id=923 data-nosnippet>923</a> <span class="kw">let </span>ans = lhs.wrapping_sub(rhs); |
| <a href=#924 id=924 data-nosnippet>924</a> destination.write_from_bytes(<span class="self">self</span>, <span class="kw-2">&</span>ans.to_le_bytes()[<span class="number">0</span>..destination.size]) |
| <a href=#925 id=925 data-nosnippet>925</a> } |
| <a href=#926 id=926 data-nosnippet>926</a> <span class="string">"wrapping_mul" </span>| <span class="string">"unchecked_mul" </span>=> { |
| <a href=#927 id=927 data-nosnippet>927</a> <span class="kw">let </span>[lhs, rhs] = args <span class="kw">else </span>{ |
| <a href=#928 id=928 data-nosnippet>928</a> <span class="kw">return </span><span class="prelude-val">Err</span>(MirEvalError::InternalError( |
| <a href=#929 id=929 data-nosnippet>929</a> <span class="string">"wrapping_mul args are not provided"</span>.into(), |
| <a href=#930 id=930 data-nosnippet>930</a> )); |
| <a href=#931 id=931 data-nosnippet>931</a> }; |
| <a href=#932 id=932 data-nosnippet>932</a> <span class="kw">let </span>lhs = u128::from_le_bytes(pad16(lhs.get(<span class="self">self</span>)<span class="question-mark">?</span>, <span class="bool-val">false</span>)); |
| <a href=#933 id=933 data-nosnippet>933</a> <span class="kw">let </span>rhs = u128::from_le_bytes(pad16(rhs.get(<span class="self">self</span>)<span class="question-mark">?</span>, <span class="bool-val">false</span>)); |
| <a href=#934 id=934 data-nosnippet>934</a> <span class="kw">let </span>ans = lhs.wrapping_mul(rhs); |
| <a href=#935 id=935 data-nosnippet>935</a> destination.write_from_bytes(<span class="self">self</span>, <span class="kw-2">&</span>ans.to_le_bytes()[<span class="number">0</span>..destination.size]) |
| <a href=#936 id=936 data-nosnippet>936</a> } |
| <a href=#937 id=937 data-nosnippet>937</a> <span class="string">"wrapping_shl" </span>| <span class="string">"unchecked_shl" </span>=> { |
| <a href=#938 id=938 data-nosnippet>938</a> <span class="comment">// FIXME: signed |
| <a href=#939 id=939 data-nosnippet>939</a> </span><span class="kw">let </span>[lhs, rhs] = args <span class="kw">else </span>{ |
| <a href=#940 id=940 data-nosnippet>940</a> <span class="kw">return </span><span class="prelude-val">Err</span>(MirEvalError::InternalError( |
| <a href=#941 id=941 data-nosnippet>941</a> <span class="string">"unchecked_shl args are not provided"</span>.into(), |
| <a href=#942 id=942 data-nosnippet>942</a> )); |
| <a href=#943 id=943 data-nosnippet>943</a> }; |
| <a href=#944 id=944 data-nosnippet>944</a> <span class="kw">let </span>lhs = u128::from_le_bytes(pad16(lhs.get(<span class="self">self</span>)<span class="question-mark">?</span>, <span class="bool-val">false</span>)); |
| <a href=#945 id=945 data-nosnippet>945</a> <span class="kw">let </span>rhs = u128::from_le_bytes(pad16(rhs.get(<span class="self">self</span>)<span class="question-mark">?</span>, <span class="bool-val">false</span>)); |
| <a href=#946 id=946 data-nosnippet>946</a> <span class="kw">let </span>ans = lhs.wrapping_shl(rhs <span class="kw">as </span>u32); |
| <a href=#947 id=947 data-nosnippet>947</a> destination.write_from_bytes(<span class="self">self</span>, <span class="kw-2">&</span>ans.to_le_bytes()[<span class="number">0</span>..destination.size]) |
| <a href=#948 id=948 data-nosnippet>948</a> } |
| <a href=#949 id=949 data-nosnippet>949</a> <span class="string">"wrapping_shr" </span>| <span class="string">"unchecked_shr" </span>=> { |
| <a href=#950 id=950 data-nosnippet>950</a> <span class="comment">// FIXME: signed |
| <a href=#951 id=951 data-nosnippet>951</a> </span><span class="kw">let </span>[lhs, rhs] = args <span class="kw">else </span>{ |
| <a href=#952 id=952 data-nosnippet>952</a> <span class="kw">return </span><span class="prelude-val">Err</span>(MirEvalError::InternalError( |
| <a href=#953 id=953 data-nosnippet>953</a> <span class="string">"unchecked_shr args are not provided"</span>.into(), |
| <a href=#954 id=954 data-nosnippet>954</a> )); |
| <a href=#955 id=955 data-nosnippet>955</a> }; |
| <a href=#956 id=956 data-nosnippet>956</a> <span class="kw">let </span>lhs = u128::from_le_bytes(pad16(lhs.get(<span class="self">self</span>)<span class="question-mark">?</span>, <span class="bool-val">false</span>)); |
| <a href=#957 id=957 data-nosnippet>957</a> <span class="kw">let </span>rhs = u128::from_le_bytes(pad16(rhs.get(<span class="self">self</span>)<span class="question-mark">?</span>, <span class="bool-val">false</span>)); |
| <a href=#958 id=958 data-nosnippet>958</a> <span class="kw">let </span>ans = lhs.wrapping_shr(rhs <span class="kw">as </span>u32); |
| <a href=#959 id=959 data-nosnippet>959</a> destination.write_from_bytes(<span class="self">self</span>, <span class="kw-2">&</span>ans.to_le_bytes()[<span class="number">0</span>..destination.size]) |
| <a href=#960 id=960 data-nosnippet>960</a> } |
| <a href=#961 id=961 data-nosnippet>961</a> <span class="string">"unchecked_rem" </span>=> { |
| <a href=#962 id=962 data-nosnippet>962</a> <span class="comment">// FIXME: signed |
| <a href=#963 id=963 data-nosnippet>963</a> </span><span class="kw">let </span>[lhs, rhs] = args <span class="kw">else </span>{ |
| <a href=#964 id=964 data-nosnippet>964</a> <span class="kw">return </span><span class="prelude-val">Err</span>(MirEvalError::InternalError( |
| <a href=#965 id=965 data-nosnippet>965</a> <span class="string">"unchecked_rem args are not provided"</span>.into(), |
| <a href=#966 id=966 data-nosnippet>966</a> )); |
| <a href=#967 id=967 data-nosnippet>967</a> }; |
| <a href=#968 id=968 data-nosnippet>968</a> <span class="kw">let </span>lhs = u128::from_le_bytes(pad16(lhs.get(<span class="self">self</span>)<span class="question-mark">?</span>, <span class="bool-val">false</span>)); |
| <a href=#969 id=969 data-nosnippet>969</a> <span class="kw">let </span>rhs = u128::from_le_bytes(pad16(rhs.get(<span class="self">self</span>)<span class="question-mark">?</span>, <span class="bool-val">false</span>)); |
| <a href=#970 id=970 data-nosnippet>970</a> <span class="kw">let </span>ans = lhs.checked_rem(rhs).ok_or_else(|| { |
| <a href=#971 id=971 data-nosnippet>971</a> MirEvalError::UndefinedBehavior(<span class="string">"unchecked_rem with bad inputs"</span>.to_owned()) |
| <a href=#972 id=972 data-nosnippet>972</a> })<span class="question-mark">?</span>; |
| <a href=#973 id=973 data-nosnippet>973</a> destination.write_from_bytes(<span class="self">self</span>, <span class="kw-2">&</span>ans.to_le_bytes()[<span class="number">0</span>..destination.size]) |
| <a href=#974 id=974 data-nosnippet>974</a> } |
| <a href=#975 id=975 data-nosnippet>975</a> <span class="string">"unchecked_div" </span>| <span class="string">"exact_div" </span>=> { |
| <a href=#976 id=976 data-nosnippet>976</a> <span class="comment">// FIXME: signed |
| <a href=#977 id=977 data-nosnippet>977</a> </span><span class="kw">let </span>[lhs, rhs] = args <span class="kw">else </span>{ |
| <a href=#978 id=978 data-nosnippet>978</a> <span class="kw">return </span><span class="prelude-val">Err</span>(MirEvalError::InternalError( |
| <a href=#979 id=979 data-nosnippet>979</a> <span class="string">"unchecked_div args are not provided"</span>.into(), |
| <a href=#980 id=980 data-nosnippet>980</a> )); |
| <a href=#981 id=981 data-nosnippet>981</a> }; |
| <a href=#982 id=982 data-nosnippet>982</a> <span class="kw">let </span>lhs = u128::from_le_bytes(pad16(lhs.get(<span class="self">self</span>)<span class="question-mark">?</span>, <span class="bool-val">false</span>)); |
| <a href=#983 id=983 data-nosnippet>983</a> <span class="kw">let </span>rhs = u128::from_le_bytes(pad16(rhs.get(<span class="self">self</span>)<span class="question-mark">?</span>, <span class="bool-val">false</span>)); |
| <a href=#984 id=984 data-nosnippet>984</a> <span class="kw">let </span>ans = lhs.checked_div(rhs).ok_or_else(|| { |
| <a href=#985 id=985 data-nosnippet>985</a> MirEvalError::UndefinedBehavior(<span class="string">"unchecked_rem with bad inputs"</span>.to_owned()) |
| <a href=#986 id=986 data-nosnippet>986</a> })<span class="question-mark">?</span>; |
| <a href=#987 id=987 data-nosnippet>987</a> destination.write_from_bytes(<span class="self">self</span>, <span class="kw-2">&</span>ans.to_le_bytes()[<span class="number">0</span>..destination.size]) |
| <a href=#988 id=988 data-nosnippet>988</a> } |
| <a href=#989 id=989 data-nosnippet>989</a> <span class="string">"add_with_overflow" </span>| <span class="string">"sub_with_overflow" </span>| <span class="string">"mul_with_overflow" </span>=> { |
| <a href=#990 id=990 data-nosnippet>990</a> <span class="kw">let </span>[lhs, rhs] = args <span class="kw">else </span>{ |
| <a href=#991 id=991 data-nosnippet>991</a> <span class="kw">return </span><span class="prelude-val">Err</span>(MirEvalError::InternalError( |
| <a href=#992 id=992 data-nosnippet>992</a> <span class="string">"const_eval_select args are not provided"</span>.into(), |
| <a href=#993 id=993 data-nosnippet>993</a> )); |
| <a href=#994 id=994 data-nosnippet>994</a> }; |
| <a href=#995 id=995 data-nosnippet>995</a> <span class="kw">let </span>result_ty = Ty::new_tup_from_iter( |
| <a href=#996 id=996 data-nosnippet>996</a> <span class="self">self</span>.interner(), |
| <a href=#997 id=997 data-nosnippet>997</a> [lhs.ty, Ty::new_bool(<span class="self">self</span>.interner())].into_iter(), |
| <a href=#998 id=998 data-nosnippet>998</a> ); |
| <a href=#999 id=999 data-nosnippet>999</a> <span class="kw">let </span>op_size = <span class="self">self</span>.size_of_sized(lhs.ty, locals, <span class="string">"operand of add_with_overflow"</span>)<span class="question-mark">?</span>; |
| <a href=#1000 id=1000 data-nosnippet>1000</a> <span class="kw">let </span>lhs = u128::from_le_bytes(pad16(lhs.get(<span class="self">self</span>)<span class="question-mark">?</span>, <span class="bool-val">false</span>)); |
| <a href=#1001 id=1001 data-nosnippet>1001</a> <span class="kw">let </span>rhs = u128::from_le_bytes(pad16(rhs.get(<span class="self">self</span>)<span class="question-mark">?</span>, <span class="bool-val">false</span>)); |
| <a href=#1002 id=1002 data-nosnippet>1002</a> <span class="kw">let </span>(ans, u128overflow) = <span class="kw">match </span>name { |
| <a href=#1003 id=1003 data-nosnippet>1003</a> <span class="string">"add_with_overflow" </span>=> lhs.overflowing_add(rhs), |
| <a href=#1004 id=1004 data-nosnippet>1004</a> <span class="string">"sub_with_overflow" </span>=> lhs.overflowing_sub(rhs), |
| <a href=#1005 id=1005 data-nosnippet>1005</a> <span class="string">"mul_with_overflow" </span>=> lhs.overflowing_mul(rhs), |
| <a href=#1006 id=1006 data-nosnippet>1006</a> <span class="kw">_ </span>=> <span class="macro">unreachable!</span>(), |
| <a href=#1007 id=1007 data-nosnippet>1007</a> }; |
| <a href=#1008 id=1008 data-nosnippet>1008</a> <span class="kw">let </span>is_overflow = u128overflow |
| <a href=#1009 id=1009 data-nosnippet>1009</a> || ans.to_le_bytes()[op_size..].iter().any(|<span class="kw-2">&</span>it| it != <span class="number">0 </span>&& it != <span class="number">255</span>); |
| <a href=#1010 id=1010 data-nosnippet>1010</a> <span class="kw">let </span>is_overflow = <span class="macro">vec!</span>[u8::from(is_overflow)]; |
| <a href=#1011 id=1011 data-nosnippet>1011</a> <span class="kw">let </span>layout = <span class="self">self</span>.layout(result_ty)<span class="question-mark">?</span>; |
| <a href=#1012 id=1012 data-nosnippet>1012</a> <span class="kw">let </span>result = <span class="self">self</span>.construct_with_layout( |
| <a href=#1013 id=1013 data-nosnippet>1013</a> layout.size.bytes_usize(), |
| <a href=#1014 id=1014 data-nosnippet>1014</a> <span class="kw-2">&</span>layout, |
| <a href=#1015 id=1015 data-nosnippet>1015</a> <span class="prelude-val">None</span>, |
| <a href=#1016 id=1016 data-nosnippet>1016</a> [ans.to_le_bytes()[<span class="number">0</span>..op_size].to_vec(), is_overflow] |
| <a href=#1017 id=1017 data-nosnippet>1017</a> .into_iter() |
| <a href=#1018 id=1018 data-nosnippet>1018</a> .map(IntervalOrOwned::Owned), |
| <a href=#1019 id=1019 data-nosnippet>1019</a> )<span class="question-mark">?</span>; |
| <a href=#1020 id=1020 data-nosnippet>1020</a> destination.write_from_bytes(<span class="self">self</span>, <span class="kw-2">&</span>result) |
| <a href=#1021 id=1021 data-nosnippet>1021</a> } |
| <a href=#1022 id=1022 data-nosnippet>1022</a> <span class="string">"copy" </span>| <span class="string">"copy_nonoverlapping" </span>=> { |
| <a href=#1023 id=1023 data-nosnippet>1023</a> <span class="kw">let </span>[src, dst, offset] = args <span class="kw">else </span>{ |
| <a href=#1024 id=1024 data-nosnippet>1024</a> <span class="kw">return </span><span class="prelude-val">Err</span>(MirEvalError::InternalError( |
| <a href=#1025 id=1025 data-nosnippet>1025</a> <span class="string">"copy_nonoverlapping args are not provided"</span>.into(), |
| <a href=#1026 id=1026 data-nosnippet>1026</a> )); |
| <a href=#1027 id=1027 data-nosnippet>1027</a> }; |
| <a href=#1028 id=1028 data-nosnippet>1028</a> <span class="kw">let </span><span class="prelude-val">Some</span>(ty) = generic_args.as_slice().first().and_then(|it| it.ty()) <span class="kw">else </span>{ |
| <a href=#1029 id=1029 data-nosnippet>1029</a> <span class="kw">return </span><span class="prelude-val">Err</span>(MirEvalError::InternalError( |
| <a href=#1030 id=1030 data-nosnippet>1030</a> <span class="string">"copy_nonoverlapping generic arg is not provided"</span>.into(), |
| <a href=#1031 id=1031 data-nosnippet>1031</a> )); |
| <a href=#1032 id=1032 data-nosnippet>1032</a> }; |
| <a href=#1033 id=1033 data-nosnippet>1033</a> <span class="kw">let </span>src = Address::from_bytes(src.get(<span class="self">self</span>)<span class="question-mark">?</span>)<span class="question-mark">?</span>; |
| <a href=#1034 id=1034 data-nosnippet>1034</a> <span class="kw">let </span>dst = Address::from_bytes(dst.get(<span class="self">self</span>)<span class="question-mark">?</span>)<span class="question-mark">?</span>; |
| <a href=#1035 id=1035 data-nosnippet>1035</a> <span class="kw">let </span>offset = <span class="macro">from_bytes!</span>(usize, offset.get(<span class="self">self</span>)<span class="question-mark">?</span>); |
| <a href=#1036 id=1036 data-nosnippet>1036</a> <span class="kw">let </span>size = <span class="self">self</span>.size_of_sized(ty, locals, <span class="string">"copy_nonoverlapping ptr type"</span>)<span class="question-mark">?</span>; |
| <a href=#1037 id=1037 data-nosnippet>1037</a> <span class="kw">let </span>size = offset * size; |
| <a href=#1038 id=1038 data-nosnippet>1038</a> <span class="kw">let </span>src = Interval { addr: src, size }; |
| <a href=#1039 id=1039 data-nosnippet>1039</a> <span class="kw">let </span>dst = Interval { addr: dst, size }; |
| <a href=#1040 id=1040 data-nosnippet>1040</a> dst.write_from_interval(<span class="self">self</span>, src) |
| <a href=#1041 id=1041 data-nosnippet>1041</a> } |
| <a href=#1042 id=1042 data-nosnippet>1042</a> <span class="string">"offset" </span>| <span class="string">"arith_offset" </span>=> { |
| <a href=#1043 id=1043 data-nosnippet>1043</a> <span class="kw">let </span>[ptr, offset] = args <span class="kw">else </span>{ |
| <a href=#1044 id=1044 data-nosnippet>1044</a> <span class="kw">return </span><span class="prelude-val">Err</span>(MirEvalError::InternalError(<span class="string">"offset args are not provided"</span>.into())); |
| <a href=#1045 id=1045 data-nosnippet>1045</a> }; |
| <a href=#1046 id=1046 data-nosnippet>1046</a> <span class="kw">let </span>ty = <span class="kw">if </span>name == <span class="string">"offset" </span>{ |
| <a href=#1047 id=1047 data-nosnippet>1047</a> <span class="kw">let </span><span class="prelude-val">Some</span>(ty0) = generic_args.as_slice().first().and_then(|it| it.ty()) <span class="kw">else </span>{ |
| <a href=#1048 id=1048 data-nosnippet>1048</a> <span class="kw">return </span><span class="prelude-val">Err</span>(MirEvalError::InternalError( |
| <a href=#1049 id=1049 data-nosnippet>1049</a> <span class="string">"offset generic arg is not provided"</span>.into(), |
| <a href=#1050 id=1050 data-nosnippet>1050</a> )); |
| <a href=#1051 id=1051 data-nosnippet>1051</a> }; |
| <a href=#1052 id=1052 data-nosnippet>1052</a> <span class="kw">let </span><span class="prelude-val">Some</span>(ty1) = generic_args.as_slice().get(<span class="number">1</span>).and_then(|it| it.ty()) <span class="kw">else </span>{ |
| <a href=#1053 id=1053 data-nosnippet>1053</a> <span class="kw">return </span><span class="prelude-val">Err</span>(MirEvalError::InternalError( |
| <a href=#1054 id=1054 data-nosnippet>1054</a> <span class="string">"offset generic arg is not provided"</span>.into(), |
| <a href=#1055 id=1055 data-nosnippet>1055</a> )); |
| <a href=#1056 id=1056 data-nosnippet>1056</a> }; |
| <a href=#1057 id=1057 data-nosnippet>1057</a> <span class="kw">if </span>!<span class="macro">matches!</span>( |
| <a href=#1058 id=1058 data-nosnippet>1058</a> ty1.kind(), |
| <a href=#1059 id=1059 data-nosnippet>1059</a> TyKind::Int(rustc_type_ir::IntTy::Isize) |
| <a href=#1060 id=1060 data-nosnippet>1060</a> | TyKind::Uint(rustc_type_ir::UintTy::Usize) |
| <a href=#1061 id=1061 data-nosnippet>1061</a> ) { |
| <a href=#1062 id=1062 data-nosnippet>1062</a> <span class="kw">return </span><span class="prelude-val">Err</span>(MirEvalError::InternalError( |
| <a href=#1063 id=1063 data-nosnippet>1063</a> <span class="string">"offset generic arg is not usize or isize"</span>.into(), |
| <a href=#1064 id=1064 data-nosnippet>1064</a> )); |
| <a href=#1065 id=1065 data-nosnippet>1065</a> } |
| <a href=#1066 id=1066 data-nosnippet>1066</a> <span class="kw">match </span>ty0.kind() { |
| <a href=#1067 id=1067 data-nosnippet>1067</a> TyKind::RawPtr(ty, <span class="kw">_</span>) => ty, |
| <a href=#1068 id=1068 data-nosnippet>1068</a> <span class="kw">_ </span>=> { |
| <a href=#1069 id=1069 data-nosnippet>1069</a> <span class="kw">return </span><span class="prelude-val">Err</span>(MirEvalError::InternalError( |
| <a href=#1070 id=1070 data-nosnippet>1070</a> <span class="string">"offset generic arg is not a raw pointer"</span>.into(), |
| <a href=#1071 id=1071 data-nosnippet>1071</a> )); |
| <a href=#1072 id=1072 data-nosnippet>1072</a> } |
| <a href=#1073 id=1073 data-nosnippet>1073</a> } |
| <a href=#1074 id=1074 data-nosnippet>1074</a> } <span class="kw">else </span>{ |
| <a href=#1075 id=1075 data-nosnippet>1075</a> <span class="kw">let </span><span class="prelude-val">Some</span>(ty) = generic_args.as_slice().first().and_then(|it| it.ty()) <span class="kw">else </span>{ |
| <a href=#1076 id=1076 data-nosnippet>1076</a> <span class="kw">return </span><span class="prelude-val">Err</span>(MirEvalError::InternalError( |
| <a href=#1077 id=1077 data-nosnippet>1077</a> <span class="string">"arith_offset generic arg is not provided"</span>.into(), |
| <a href=#1078 id=1078 data-nosnippet>1078</a> )); |
| <a href=#1079 id=1079 data-nosnippet>1079</a> }; |
| <a href=#1080 id=1080 data-nosnippet>1080</a> ty |
| <a href=#1081 id=1081 data-nosnippet>1081</a> }; |
| <a href=#1082 id=1082 data-nosnippet>1082</a> <span class="kw">let </span>ptr = u128::from_le_bytes(pad16(ptr.get(<span class="self">self</span>)<span class="question-mark">?</span>, <span class="bool-val">false</span>)); |
| <a href=#1083 id=1083 data-nosnippet>1083</a> <span class="kw">let </span>offset = u128::from_le_bytes(pad16(offset.get(<span class="self">self</span>)<span class="question-mark">?</span>, <span class="bool-val">false</span>)); |
| <a href=#1084 id=1084 data-nosnippet>1084</a> <span class="kw">let </span>size = <span class="self">self</span>.size_of_sized(ty, locals, <span class="string">"offset ptr type"</span>)<span class="question-mark">? </span><span class="kw">as </span>u128; |
| <a href=#1085 id=1085 data-nosnippet>1085</a> <span class="kw">let </span>ans = ptr + offset * size; |
| <a href=#1086 id=1086 data-nosnippet>1086</a> destination.write_from_bytes(<span class="self">self</span>, <span class="kw-2">&</span>ans.to_le_bytes()[<span class="number">0</span>..destination.size]) |
| <a href=#1087 id=1087 data-nosnippet>1087</a> } |
| <a href=#1088 id=1088 data-nosnippet>1088</a> <span class="string">"assert_inhabited" </span>| <span class="string">"assert_zero_valid" </span>| <span class="string">"assert_uninit_valid" </span>| <span class="string">"assume" </span>=> { |
| <a href=#1089 id=1089 data-nosnippet>1089</a> <span class="comment">// FIXME: We should actually implement these checks |
| <a href=#1090 id=1090 data-nosnippet>1090</a> </span><span class="prelude-val">Ok</span>(()) |
| <a href=#1091 id=1091 data-nosnippet>1091</a> } |
| <a href=#1092 id=1092 data-nosnippet>1092</a> <span class="string">"forget" </span>=> { |
| <a href=#1093 id=1093 data-nosnippet>1093</a> <span class="comment">// We don't call any drop glue yet, so there is nothing here |
| <a href=#1094 id=1094 data-nosnippet>1094</a> </span><span class="prelude-val">Ok</span>(()) |
| <a href=#1095 id=1095 data-nosnippet>1095</a> } |
| <a href=#1096 id=1096 data-nosnippet>1096</a> <span class="string">"transmute" </span>| <span class="string">"transmute_unchecked" </span>=> { |
| <a href=#1097 id=1097 data-nosnippet>1097</a> <span class="kw">let </span>[arg] = args <span class="kw">else </span>{ |
| <a href=#1098 id=1098 data-nosnippet>1098</a> <span class="kw">return </span><span class="prelude-val">Err</span>(MirEvalError::InternalError( |
| <a href=#1099 id=1099 data-nosnippet>1099</a> <span class="string">"transmute arg is not provided"</span>.into(), |
| <a href=#1100 id=1100 data-nosnippet>1100</a> )); |
| <a href=#1101 id=1101 data-nosnippet>1101</a> }; |
| <a href=#1102 id=1102 data-nosnippet>1102</a> destination.write_from_interval(<span class="self">self</span>, arg.interval) |
| <a href=#1103 id=1103 data-nosnippet>1103</a> } |
| <a href=#1104 id=1104 data-nosnippet>1104</a> <span class="string">"ctpop" </span>=> { |
| <a href=#1105 id=1105 data-nosnippet>1105</a> <span class="kw">let </span>[arg] = args <span class="kw">else </span>{ |
| <a href=#1106 id=1106 data-nosnippet>1106</a> <span class="kw">return </span><span class="prelude-val">Err</span>(MirEvalError::InternalError(<span class="string">"ctpop arg is not provided"</span>.into())); |
| <a href=#1107 id=1107 data-nosnippet>1107</a> }; |
| <a href=#1108 id=1108 data-nosnippet>1108</a> <span class="kw">let </span>result = u128::from_le_bytes(pad16(arg.get(<span class="self">self</span>)<span class="question-mark">?</span>, <span class="bool-val">false</span>)).count_ones(); |
| <a href=#1109 id=1109 data-nosnippet>1109</a> destination |
| <a href=#1110 id=1110 data-nosnippet>1110</a> .write_from_bytes(<span class="self">self</span>, <span class="kw-2">&</span>(result <span class="kw">as </span>u128).to_le_bytes()[<span class="number">0</span>..destination.size]) |
| <a href=#1111 id=1111 data-nosnippet>1111</a> } |
| <a href=#1112 id=1112 data-nosnippet>1112</a> <span class="string">"ctlz" </span>| <span class="string">"ctlz_nonzero" </span>=> { |
| <a href=#1113 id=1113 data-nosnippet>1113</a> <span class="kw">let </span>[arg] = args <span class="kw">else </span>{ |
| <a href=#1114 id=1114 data-nosnippet>1114</a> <span class="kw">return </span><span class="prelude-val">Err</span>(MirEvalError::InternalError(<span class="string">"ctlz arg is not provided"</span>.into())); |
| <a href=#1115 id=1115 data-nosnippet>1115</a> }; |
| <a href=#1116 id=1116 data-nosnippet>1116</a> <span class="kw">let </span>result = |
| <a href=#1117 id=1117 data-nosnippet>1117</a> u128::from_le_bytes(pad16(arg.get(<span class="self">self</span>)<span class="question-mark">?</span>, <span class="bool-val">false</span>)).leading_zeros() <span class="kw">as </span>usize; |
| <a href=#1118 id=1118 data-nosnippet>1118</a> <span class="kw">let </span>result = result - (<span class="number">128 </span>- arg.interval.size * <span class="number">8</span>); |
| <a href=#1119 id=1119 data-nosnippet>1119</a> destination |
| <a href=#1120 id=1120 data-nosnippet>1120</a> .write_from_bytes(<span class="self">self</span>, <span class="kw-2">&</span>(result <span class="kw">as </span>u128).to_le_bytes()[<span class="number">0</span>..destination.size]) |
| <a href=#1121 id=1121 data-nosnippet>1121</a> } |
| <a href=#1122 id=1122 data-nosnippet>1122</a> <span class="string">"cttz" </span>| <span class="string">"cttz_nonzero" </span>=> { |
| <a href=#1123 id=1123 data-nosnippet>1123</a> <span class="kw">let </span>[arg] = args <span class="kw">else </span>{ |
| <a href=#1124 id=1124 data-nosnippet>1124</a> <span class="kw">return </span><span class="prelude-val">Err</span>(MirEvalError::InternalError(<span class="string">"cttz arg is not provided"</span>.into())); |
| <a href=#1125 id=1125 data-nosnippet>1125</a> }; |
| <a href=#1126 id=1126 data-nosnippet>1126</a> <span class="kw">let </span>result = u128::from_le_bytes(pad16(arg.get(<span class="self">self</span>)<span class="question-mark">?</span>, <span class="bool-val">false</span>)).trailing_zeros(); |
| <a href=#1127 id=1127 data-nosnippet>1127</a> destination |
| <a href=#1128 id=1128 data-nosnippet>1128</a> .write_from_bytes(<span class="self">self</span>, <span class="kw-2">&</span>(result <span class="kw">as </span>u128).to_le_bytes()[<span class="number">0</span>..destination.size]) |
| <a href=#1129 id=1129 data-nosnippet>1129</a> } |
| <a href=#1130 id=1130 data-nosnippet>1130</a> <span class="string">"rotate_left" </span>=> { |
| <a href=#1131 id=1131 data-nosnippet>1131</a> <span class="kw">let </span>[lhs, rhs] = args <span class="kw">else </span>{ |
| <a href=#1132 id=1132 data-nosnippet>1132</a> <span class="kw">return </span><span class="prelude-val">Err</span>(MirEvalError::InternalError( |
| <a href=#1133 id=1133 data-nosnippet>1133</a> <span class="string">"rotate_left args are not provided"</span>.into(), |
| <a href=#1134 id=1134 data-nosnippet>1134</a> )); |
| <a href=#1135 id=1135 data-nosnippet>1135</a> }; |
| <a href=#1136 id=1136 data-nosnippet>1136</a> <span class="kw">let </span>lhs = <span class="kw-2">&</span>lhs.get(<span class="self">self</span>)<span class="question-mark">?</span>[<span class="number">0</span>..destination.size]; |
| <a href=#1137 id=1137 data-nosnippet>1137</a> <span class="kw">let </span>rhs = rhs.get(<span class="self">self</span>)<span class="question-mark">?</span>[<span class="number">0</span>] <span class="kw">as </span>u32; |
| <a href=#1138 id=1138 data-nosnippet>1138</a> <span class="kw">match </span>destination.size { |
| <a href=#1139 id=1139 data-nosnippet>1139</a> <span class="number">1 </span>=> { |
| <a href=#1140 id=1140 data-nosnippet>1140</a> <span class="kw">let </span>r = <span class="macro">from_bytes!</span>(u8, lhs).rotate_left(rhs); |
| <a href=#1141 id=1141 data-nosnippet>1141</a> destination.write_from_bytes(<span class="self">self</span>, <span class="kw-2">&</span>r.to_le_bytes()) |
| <a href=#1142 id=1142 data-nosnippet>1142</a> } |
| <a href=#1143 id=1143 data-nosnippet>1143</a> <span class="number">2 </span>=> { |
| <a href=#1144 id=1144 data-nosnippet>1144</a> <span class="kw">let </span>r = <span class="macro">from_bytes!</span>(u16, lhs).rotate_left(rhs); |
| <a href=#1145 id=1145 data-nosnippet>1145</a> destination.write_from_bytes(<span class="self">self</span>, <span class="kw-2">&</span>r.to_le_bytes()) |
| <a href=#1146 id=1146 data-nosnippet>1146</a> } |
| <a href=#1147 id=1147 data-nosnippet>1147</a> <span class="number">4 </span>=> { |
| <a href=#1148 id=1148 data-nosnippet>1148</a> <span class="kw">let </span>r = <span class="macro">from_bytes!</span>(u32, lhs).rotate_left(rhs); |
| <a href=#1149 id=1149 data-nosnippet>1149</a> destination.write_from_bytes(<span class="self">self</span>, <span class="kw-2">&</span>r.to_le_bytes()) |
| <a href=#1150 id=1150 data-nosnippet>1150</a> } |
| <a href=#1151 id=1151 data-nosnippet>1151</a> <span class="number">8 </span>=> { |
| <a href=#1152 id=1152 data-nosnippet>1152</a> <span class="kw">let </span>r = <span class="macro">from_bytes!</span>(u64, lhs).rotate_left(rhs); |
| <a href=#1153 id=1153 data-nosnippet>1153</a> destination.write_from_bytes(<span class="self">self</span>, <span class="kw-2">&</span>r.to_le_bytes()) |
| <a href=#1154 id=1154 data-nosnippet>1154</a> } |
| <a href=#1155 id=1155 data-nosnippet>1155</a> <span class="number">16 </span>=> { |
| <a href=#1156 id=1156 data-nosnippet>1156</a> <span class="kw">let </span>r = <span class="macro">from_bytes!</span>(u128, lhs).rotate_left(rhs); |
| <a href=#1157 id=1157 data-nosnippet>1157</a> destination.write_from_bytes(<span class="self">self</span>, <span class="kw-2">&</span>r.to_le_bytes()) |
| <a href=#1158 id=1158 data-nosnippet>1158</a> } |
| <a href=#1159 id=1159 data-nosnippet>1159</a> s => <span class="macro">not_supported!</span>(<span class="string">"destination with size {s} for rotate_left"</span>), |
| <a href=#1160 id=1160 data-nosnippet>1160</a> } |
| <a href=#1161 id=1161 data-nosnippet>1161</a> } |
| <a href=#1162 id=1162 data-nosnippet>1162</a> <span class="string">"rotate_right" </span>=> { |
| <a href=#1163 id=1163 data-nosnippet>1163</a> <span class="kw">let </span>[lhs, rhs] = args <span class="kw">else </span>{ |
| <a href=#1164 id=1164 data-nosnippet>1164</a> <span class="kw">return </span><span class="prelude-val">Err</span>(MirEvalError::InternalError( |
| <a href=#1165 id=1165 data-nosnippet>1165</a> <span class="string">"rotate_right args are not provided"</span>.into(), |
| <a href=#1166 id=1166 data-nosnippet>1166</a> )); |
| <a href=#1167 id=1167 data-nosnippet>1167</a> }; |
| <a href=#1168 id=1168 data-nosnippet>1168</a> <span class="kw">let </span>lhs = <span class="kw-2">&</span>lhs.get(<span class="self">self</span>)<span class="question-mark">?</span>[<span class="number">0</span>..destination.size]; |
| <a href=#1169 id=1169 data-nosnippet>1169</a> <span class="kw">let </span>rhs = rhs.get(<span class="self">self</span>)<span class="question-mark">?</span>[<span class="number">0</span>] <span class="kw">as </span>u32; |
| <a href=#1170 id=1170 data-nosnippet>1170</a> <span class="kw">match </span>destination.size { |
| <a href=#1171 id=1171 data-nosnippet>1171</a> <span class="number">1 </span>=> { |
| <a href=#1172 id=1172 data-nosnippet>1172</a> <span class="kw">let </span>r = <span class="macro">from_bytes!</span>(u8, lhs).rotate_right(rhs); |
| <a href=#1173 id=1173 data-nosnippet>1173</a> destination.write_from_bytes(<span class="self">self</span>, <span class="kw-2">&</span>r.to_le_bytes()) |
| <a href=#1174 id=1174 data-nosnippet>1174</a> } |
| <a href=#1175 id=1175 data-nosnippet>1175</a> <span class="number">2 </span>=> { |
| <a href=#1176 id=1176 data-nosnippet>1176</a> <span class="kw">let </span>r = <span class="macro">from_bytes!</span>(u16, lhs).rotate_right(rhs); |
| <a href=#1177 id=1177 data-nosnippet>1177</a> destination.write_from_bytes(<span class="self">self</span>, <span class="kw-2">&</span>r.to_le_bytes()) |
| <a href=#1178 id=1178 data-nosnippet>1178</a> } |
| <a href=#1179 id=1179 data-nosnippet>1179</a> <span class="number">4 </span>=> { |
| <a href=#1180 id=1180 data-nosnippet>1180</a> <span class="kw">let </span>r = <span class="macro">from_bytes!</span>(u32, lhs).rotate_right(rhs); |
| <a href=#1181 id=1181 data-nosnippet>1181</a> destination.write_from_bytes(<span class="self">self</span>, <span class="kw-2">&</span>r.to_le_bytes()) |
| <a href=#1182 id=1182 data-nosnippet>1182</a> } |
| <a href=#1183 id=1183 data-nosnippet>1183</a> <span class="number">8 </span>=> { |
| <a href=#1184 id=1184 data-nosnippet>1184</a> <span class="kw">let </span>r = <span class="macro">from_bytes!</span>(u64, lhs).rotate_right(rhs); |
| <a href=#1185 id=1185 data-nosnippet>1185</a> destination.write_from_bytes(<span class="self">self</span>, <span class="kw-2">&</span>r.to_le_bytes()) |
| <a href=#1186 id=1186 data-nosnippet>1186</a> } |
| <a href=#1187 id=1187 data-nosnippet>1187</a> <span class="number">16 </span>=> { |
| <a href=#1188 id=1188 data-nosnippet>1188</a> <span class="kw">let </span>r = <span class="macro">from_bytes!</span>(u128, lhs).rotate_right(rhs); |
| <a href=#1189 id=1189 data-nosnippet>1189</a> destination.write_from_bytes(<span class="self">self</span>, <span class="kw-2">&</span>r.to_le_bytes()) |
| <a href=#1190 id=1190 data-nosnippet>1190</a> } |
| <a href=#1191 id=1191 data-nosnippet>1191</a> s => <span class="macro">not_supported!</span>(<span class="string">"destination with size {s} for rotate_right"</span>), |
| <a href=#1192 id=1192 data-nosnippet>1192</a> } |
| <a href=#1193 id=1193 data-nosnippet>1193</a> } |
| <a href=#1194 id=1194 data-nosnippet>1194</a> <span class="string">"discriminant_value" </span>=> { |
| <a href=#1195 id=1195 data-nosnippet>1195</a> <span class="kw">let </span>[arg] = args <span class="kw">else </span>{ |
| <a href=#1196 id=1196 data-nosnippet>1196</a> <span class="kw">return </span><span class="prelude-val">Err</span>(MirEvalError::InternalError( |
| <a href=#1197 id=1197 data-nosnippet>1197</a> <span class="string">"discriminant_value arg is not provided"</span>.into(), |
| <a href=#1198 id=1198 data-nosnippet>1198</a> )); |
| <a href=#1199 id=1199 data-nosnippet>1199</a> }; |
| <a href=#1200 id=1200 data-nosnippet>1200</a> <span class="kw">let </span><span class="prelude-val">Some</span>(ty) = generic_args.as_slice().first().and_then(|it| it.ty()) <span class="kw">else </span>{ |
| <a href=#1201 id=1201 data-nosnippet>1201</a> <span class="kw">return </span><span class="prelude-val">Err</span>(MirEvalError::InternalError( |
| <a href=#1202 id=1202 data-nosnippet>1202</a> <span class="string">"discriminant_value generic arg is not provided"</span>.into(), |
| <a href=#1203 id=1203 data-nosnippet>1203</a> )); |
| <a href=#1204 id=1204 data-nosnippet>1204</a> }; |
| <a href=#1205 id=1205 data-nosnippet>1205</a> <span class="kw">let </span>addr = Address::from_bytes(arg.get(<span class="self">self</span>)<span class="question-mark">?</span>)<span class="question-mark">?</span>; |
| <a href=#1206 id=1206 data-nosnippet>1206</a> <span class="kw">let </span>size = <span class="self">self</span>.size_of_sized(ty, locals, <span class="string">"discriminant_value ptr type"</span>)<span class="question-mark">?</span>; |
| <a href=#1207 id=1207 data-nosnippet>1207</a> <span class="kw">let </span>interval = Interval { addr, size }; |
| <a href=#1208 id=1208 data-nosnippet>1208</a> <span class="kw">let </span>r = <span class="self">self</span>.compute_discriminant(ty, interval.get(<span class="self">self</span>)<span class="question-mark">?</span>)<span class="question-mark">?</span>; |
| <a href=#1209 id=1209 data-nosnippet>1209</a> destination.write_from_bytes(<span class="self">self</span>, <span class="kw-2">&</span>r.to_le_bytes()[<span class="number">0</span>..destination.size]) |
| <a href=#1210 id=1210 data-nosnippet>1210</a> } |
| <a href=#1211 id=1211 data-nosnippet>1211</a> <span class="string">"const_eval_select" </span>=> { |
| <a href=#1212 id=1212 data-nosnippet>1212</a> <span class="kw">let </span>[tuple, const_fn, <span class="kw">_</span>] = args <span class="kw">else </span>{ |
| <a href=#1213 id=1213 data-nosnippet>1213</a> <span class="kw">return </span><span class="prelude-val">Err</span>(MirEvalError::InternalError( |
| <a href=#1214 id=1214 data-nosnippet>1214</a> <span class="string">"const_eval_select args are not provided"</span>.into(), |
| <a href=#1215 id=1215 data-nosnippet>1215</a> )); |
| <a href=#1216 id=1216 data-nosnippet>1216</a> }; |
| <a href=#1217 id=1217 data-nosnippet>1217</a> <span class="kw">let </span><span class="kw-2">mut </span>args = <span class="macro">vec!</span>[const_fn.clone()]; |
| <a href=#1218 id=1218 data-nosnippet>1218</a> <span class="kw">let </span>TyKind::Tuple(fields) = tuple.ty.kind() <span class="kw">else </span>{ |
| <a href=#1219 id=1219 data-nosnippet>1219</a> <span class="kw">return </span><span class="prelude-val">Err</span>(MirEvalError::InternalError( |
| <a href=#1220 id=1220 data-nosnippet>1220</a> <span class="string">"const_eval_select arg[0] is not a tuple"</span>.into(), |
| <a href=#1221 id=1221 data-nosnippet>1221</a> )); |
| <a href=#1222 id=1222 data-nosnippet>1222</a> }; |
| <a href=#1223 id=1223 data-nosnippet>1223</a> <span class="kw">let </span>layout = <span class="self">self</span>.layout(tuple.ty)<span class="question-mark">?</span>; |
| <a href=#1224 id=1224 data-nosnippet>1224</a> <span class="kw">for </span>(i, field) <span class="kw">in </span>fields.iter().enumerate() { |
| <a href=#1225 id=1225 data-nosnippet>1225</a> <span class="kw">let </span>offset = layout.fields.offset(i).bytes_usize(); |
| <a href=#1226 id=1226 data-nosnippet>1226</a> <span class="kw">let </span>addr = tuple.interval.addr.offset(offset); |
| <a href=#1227 id=1227 data-nosnippet>1227</a> args.push(IntervalAndTy::new(addr, field, <span class="self">self</span>, locals)<span class="question-mark">?</span>); |
| <a href=#1228 id=1228 data-nosnippet>1228</a> } |
| <a href=#1229 id=1229 data-nosnippet>1229</a> <span class="kw">if let </span><span class="prelude-val">Some</span>(target) = <span class="self">self</span>.lang_items().FnOnce |
| <a href=#1230 id=1230 data-nosnippet>1230</a> && <span class="kw">let </span><span class="prelude-val">Some</span>(def) = target |
| <a href=#1231 id=1231 data-nosnippet>1231</a> .trait_items(<span class="self">self</span>.db) |
| <a href=#1232 id=1232 data-nosnippet>1232</a> .method_by_name(<span class="kw-2">&</span>Name::new_symbol_root(sym::call_once)) |
| <a href=#1233 id=1233 data-nosnippet>1233</a> { |
| <a href=#1234 id=1234 data-nosnippet>1234</a> <span class="self">self</span>.exec_fn_trait( |
| <a href=#1235 id=1235 data-nosnippet>1235</a> def, |
| <a href=#1236 id=1236 data-nosnippet>1236</a> <span class="kw-2">&</span>args, |
| <a href=#1237 id=1237 data-nosnippet>1237</a> <span class="comment">// FIXME: wrong for manual impls of `FnOnce` |
| <a href=#1238 id=1238 data-nosnippet>1238</a> </span>GenericArgs::new_from_iter(<span class="self">self</span>.interner(), []), |
| <a href=#1239 id=1239 data-nosnippet>1239</a> locals, |
| <a href=#1240 id=1240 data-nosnippet>1240</a> destination, |
| <a href=#1241 id=1241 data-nosnippet>1241</a> <span class="prelude-val">None</span>, |
| <a href=#1242 id=1242 data-nosnippet>1242</a> span, |
| <a href=#1243 id=1243 data-nosnippet>1243</a> )<span class="question-mark">?</span>; |
| <a href=#1244 id=1244 data-nosnippet>1244</a> <span class="kw">return </span><span class="prelude-val">Ok</span>(<span class="bool-val">true</span>); |
| <a href=#1245 id=1245 data-nosnippet>1245</a> } |
| <a href=#1246 id=1246 data-nosnippet>1246</a> <span class="macro">not_supported!</span>(<span class="string">"FnOnce was not available for executing const_eval_select"</span>); |
| <a href=#1247 id=1247 data-nosnippet>1247</a> } |
| <a href=#1248 id=1248 data-nosnippet>1248</a> <span class="string">"read_via_copy" </span>| <span class="string">"volatile_load" </span>=> { |
| <a href=#1249 id=1249 data-nosnippet>1249</a> <span class="kw">let </span>[arg] = args <span class="kw">else </span>{ |
| <a href=#1250 id=1250 data-nosnippet>1250</a> <span class="kw">return </span><span class="prelude-val">Err</span>(MirEvalError::InternalError( |
| <a href=#1251 id=1251 data-nosnippet>1251</a> <span class="string">"read_via_copy args are not provided"</span>.into(), |
| <a href=#1252 id=1252 data-nosnippet>1252</a> )); |
| <a href=#1253 id=1253 data-nosnippet>1253</a> }; |
| <a href=#1254 id=1254 data-nosnippet>1254</a> <span class="kw">let </span>addr = Address::from_bytes(arg.interval.get(<span class="self">self</span>)<span class="question-mark">?</span>)<span class="question-mark">?</span>; |
| <a href=#1255 id=1255 data-nosnippet>1255</a> destination.write_from_interval(<span class="self">self</span>, Interval { addr, size: destination.size }) |
| <a href=#1256 id=1256 data-nosnippet>1256</a> } |
| <a href=#1257 id=1257 data-nosnippet>1257</a> <span class="string">"write_via_move" </span>=> { |
| <a href=#1258 id=1258 data-nosnippet>1258</a> <span class="kw">let </span>[ptr, val] = args <span class="kw">else </span>{ |
| <a href=#1259 id=1259 data-nosnippet>1259</a> <span class="kw">return </span><span class="prelude-val">Err</span>(MirEvalError::InternalError( |
| <a href=#1260 id=1260 data-nosnippet>1260</a> <span class="string">"write_via_move args are not provided"</span>.into(), |
| <a href=#1261 id=1261 data-nosnippet>1261</a> )); |
| <a href=#1262 id=1262 data-nosnippet>1262</a> }; |
| <a href=#1263 id=1263 data-nosnippet>1263</a> <span class="kw">let </span>dst = Address::from_bytes(ptr.get(<span class="self">self</span>)<span class="question-mark">?</span>)<span class="question-mark">?</span>; |
| <a href=#1264 id=1264 data-nosnippet>1264</a> <span class="kw">let </span><span class="prelude-val">Some</span>(ty) = generic_args.as_slice().first().and_then(|it| it.ty()) <span class="kw">else </span>{ |
| <a href=#1265 id=1265 data-nosnippet>1265</a> <span class="kw">return </span><span class="prelude-val">Err</span>(MirEvalError::InternalError( |
| <a href=#1266 id=1266 data-nosnippet>1266</a> <span class="string">"write_via_copy generic arg is not provided"</span>.into(), |
| <a href=#1267 id=1267 data-nosnippet>1267</a> )); |
| <a href=#1268 id=1268 data-nosnippet>1268</a> }; |
| <a href=#1269 id=1269 data-nosnippet>1269</a> <span class="kw">let </span>size = <span class="self">self</span>.size_of_sized(ty, locals, <span class="string">"write_via_move ptr type"</span>)<span class="question-mark">?</span>; |
| <a href=#1270 id=1270 data-nosnippet>1270</a> Interval { addr: dst, size }.write_from_interval(<span class="self">self</span>, val.interval)<span class="question-mark">?</span>; |
| <a href=#1271 id=1271 data-nosnippet>1271</a> <span class="prelude-val">Ok</span>(()) |
| <a href=#1272 id=1272 data-nosnippet>1272</a> } |
| <a href=#1273 id=1273 data-nosnippet>1273</a> <span class="string">"write_bytes" </span>=> { |
| <a href=#1274 id=1274 data-nosnippet>1274</a> <span class="kw">let </span>[dst, val, count] = args <span class="kw">else </span>{ |
| <a href=#1275 id=1275 data-nosnippet>1275</a> <span class="kw">return </span><span class="prelude-val">Err</span>(MirEvalError::InternalError( |
| <a href=#1276 id=1276 data-nosnippet>1276</a> <span class="string">"write_bytes args are not provided"</span>.into(), |
| <a href=#1277 id=1277 data-nosnippet>1277</a> )); |
| <a href=#1278 id=1278 data-nosnippet>1278</a> }; |
| <a href=#1279 id=1279 data-nosnippet>1279</a> <span class="kw">let </span>count = <span class="macro">from_bytes!</span>(usize, count.get(<span class="self">self</span>)<span class="question-mark">?</span>); |
| <a href=#1280 id=1280 data-nosnippet>1280</a> <span class="kw">let </span>val = <span class="macro">from_bytes!</span>(u8, val.get(<span class="self">self</span>)<span class="question-mark">?</span>); |
| <a href=#1281 id=1281 data-nosnippet>1281</a> <span class="kw">let </span><span class="prelude-val">Some</span>(ty) = generic_args.as_slice().first().and_then(|it| it.ty()) <span class="kw">else </span>{ |
| <a href=#1282 id=1282 data-nosnippet>1282</a> <span class="kw">return </span><span class="prelude-val">Err</span>(MirEvalError::InternalError( |
| <a href=#1283 id=1283 data-nosnippet>1283</a> <span class="string">"write_bytes generic arg is not provided"</span>.into(), |
| <a href=#1284 id=1284 data-nosnippet>1284</a> )); |
| <a href=#1285 id=1285 data-nosnippet>1285</a> }; |
| <a href=#1286 id=1286 data-nosnippet>1286</a> <span class="kw">let </span>dst = Address::from_bytes(dst.get(<span class="self">self</span>)<span class="question-mark">?</span>)<span class="question-mark">?</span>; |
| <a href=#1287 id=1287 data-nosnippet>1287</a> <span class="kw">let </span>size = <span class="self">self</span>.size_of_sized(ty, locals, <span class="string">"copy_nonoverlapping ptr type"</span>)<span class="question-mark">?</span>; |
| <a href=#1288 id=1288 data-nosnippet>1288</a> <span class="kw">let </span>size = count * size; |
| <a href=#1289 id=1289 data-nosnippet>1289</a> <span class="self">self</span>.write_memory_using_ref(dst, size)<span class="question-mark">?</span>.fill(val); |
| <a href=#1290 id=1290 data-nosnippet>1290</a> <span class="prelude-val">Ok</span>(()) |
| <a href=#1291 id=1291 data-nosnippet>1291</a> } |
| <a href=#1292 id=1292 data-nosnippet>1292</a> <span class="string">"ptr_metadata" </span>=> { |
| <a href=#1293 id=1293 data-nosnippet>1293</a> <span class="kw">let </span>[ptr] = args <span class="kw">else </span>{ |
| <a href=#1294 id=1294 data-nosnippet>1294</a> <span class="kw">return </span><span class="prelude-val">Err</span>(MirEvalError::InternalError( |
| <a href=#1295 id=1295 data-nosnippet>1295</a> <span class="string">"ptr_metadata args are not provided"</span>.into(), |
| <a href=#1296 id=1296 data-nosnippet>1296</a> )); |
| <a href=#1297 id=1297 data-nosnippet>1297</a> }; |
| <a href=#1298 id=1298 data-nosnippet>1298</a> <span class="kw">let </span>arg = ptr.interval.get(<span class="self">self</span>)<span class="question-mark">?</span>.to_owned(); |
| <a href=#1299 id=1299 data-nosnippet>1299</a> <span class="kw">let </span>metadata = <span class="kw-2">&</span>arg[<span class="self">self</span>.ptr_size()..]; |
| <a href=#1300 id=1300 data-nosnippet>1300</a> destination.write_from_bytes(<span class="self">self</span>, metadata)<span class="question-mark">?</span>; |
| <a href=#1301 id=1301 data-nosnippet>1301</a> <span class="prelude-val">Ok</span>(()) |
| <a href=#1302 id=1302 data-nosnippet>1302</a> } |
| <a href=#1303 id=1303 data-nosnippet>1303</a> <span class="string">"three_way_compare" </span>=> { |
| <a href=#1304 id=1304 data-nosnippet>1304</a> <span class="kw">let </span>[lhs, rhs] = args <span class="kw">else </span>{ |
| <a href=#1305 id=1305 data-nosnippet>1305</a> <span class="kw">return </span><span class="prelude-val">Err</span>(MirEvalError::InternalError( |
| <a href=#1306 id=1306 data-nosnippet>1306</a> <span class="string">"three_way_compare args are not provided"</span>.into(), |
| <a href=#1307 id=1307 data-nosnippet>1307</a> )); |
| <a href=#1308 id=1308 data-nosnippet>1308</a> }; |
| <a href=#1309 id=1309 data-nosnippet>1309</a> <span class="kw">let </span><span class="prelude-val">Some</span>(ty) = generic_args.as_slice().first().and_then(|it| it.ty()) <span class="kw">else </span>{ |
| <a href=#1310 id=1310 data-nosnippet>1310</a> <span class="kw">return </span><span class="prelude-val">Err</span>(MirEvalError::InternalError( |
| <a href=#1311 id=1311 data-nosnippet>1311</a> <span class="string">"three_way_compare generic arg is not provided"</span>.into(), |
| <a href=#1312 id=1312 data-nosnippet>1312</a> )); |
| <a href=#1313 id=1313 data-nosnippet>1313</a> }; |
| <a href=#1314 id=1314 data-nosnippet>1314</a> <span class="kw">let </span>signed = <span class="kw">match </span>ty.kind() { |
| <a href=#1315 id=1315 data-nosnippet>1315</a> TyKind::Int(<span class="kw">_</span>) => <span class="bool-val">true</span>, |
| <a href=#1316 id=1316 data-nosnippet>1316</a> TyKind::Uint(<span class="kw">_</span>) => <span class="bool-val">false</span>, |
| <a href=#1317 id=1317 data-nosnippet>1317</a> <span class="kw">_ </span>=> { |
| <a href=#1318 id=1318 data-nosnippet>1318</a> <span class="kw">return </span><span class="prelude-val">Err</span>(MirEvalError::InternalError( |
| <a href=#1319 id=1319 data-nosnippet>1319</a> <span class="string">"three_way_compare expects an integral type"</span>.into(), |
| <a href=#1320 id=1320 data-nosnippet>1320</a> )); |
| <a href=#1321 id=1321 data-nosnippet>1321</a> } |
| <a href=#1322 id=1322 data-nosnippet>1322</a> }; |
| <a href=#1323 id=1323 data-nosnippet>1323</a> <span class="kw">let </span>rhs = rhs.get(<span class="self">self</span>)<span class="question-mark">?</span>; |
| <a href=#1324 id=1324 data-nosnippet>1324</a> <span class="kw">let </span>lhs = lhs.get(<span class="self">self</span>)<span class="question-mark">?</span>; |
| <a href=#1325 id=1325 data-nosnippet>1325</a> <span class="kw">let </span><span class="kw-2">mut </span>result = Ordering::Equal; |
| <a href=#1326 id=1326 data-nosnippet>1326</a> <span class="kw">for </span>(l, r) <span class="kw">in </span>lhs.iter().zip(rhs).rev() { |
| <a href=#1327 id=1327 data-nosnippet>1327</a> <span class="kw">let </span>it = l.cmp(r); |
| <a href=#1328 id=1328 data-nosnippet>1328</a> <span class="kw">if </span>it != Ordering::Equal { |
| <a href=#1329 id=1329 data-nosnippet>1329</a> result = it; |
| <a href=#1330 id=1330 data-nosnippet>1330</a> <span class="kw">break</span>; |
| <a href=#1331 id=1331 data-nosnippet>1331</a> } |
| <a href=#1332 id=1332 data-nosnippet>1332</a> } |
| <a href=#1333 id=1333 data-nosnippet>1333</a> <span class="kw">if </span>signed |
| <a href=#1334 id=1334 data-nosnippet>1334</a> && <span class="kw">let </span><span class="prelude-val">Some</span>((<span class="kw-2">&</span>l, <span class="kw-2">&</span>r)) = lhs.iter().zip(rhs).next_back() |
| <a href=#1335 id=1335 data-nosnippet>1335</a> && l != r |
| <a href=#1336 id=1336 data-nosnippet>1336</a> { |
| <a href=#1337 id=1337 data-nosnippet>1337</a> result = (l <span class="kw">as </span>i8).cmp(<span class="kw-2">&</span>(r <span class="kw">as </span>i8)); |
| <a href=#1338 id=1338 data-nosnippet>1338</a> } |
| <a href=#1339 id=1339 data-nosnippet>1339</a> <span class="kw">if let </span><span class="prelude-val">Some</span>(e) = <span class="self">self</span>.lang_items().Ordering { |
| <a href=#1340 id=1340 data-nosnippet>1340</a> <span class="kw">let </span>ty = <span class="self">self</span>.db.ty(e.into()).skip_binder(); |
| <a href=#1341 id=1341 data-nosnippet>1341</a> <span class="kw">let </span>r = <span class="self">self</span>.compute_discriminant(ty, <span class="kw-2">&</span>[result <span class="kw">as </span>i8 <span class="kw">as </span>u8])<span class="question-mark">?</span>; |
| <a href=#1342 id=1342 data-nosnippet>1342</a> destination.write_from_bytes(<span class="self">self</span>, <span class="kw-2">&</span>r.to_le_bytes()[<span class="number">0</span>..destination.size])<span class="question-mark">?</span>; |
| <a href=#1343 id=1343 data-nosnippet>1343</a> <span class="prelude-val">Ok</span>(()) |
| <a href=#1344 id=1344 data-nosnippet>1344</a> } <span class="kw">else </span>{ |
| <a href=#1345 id=1345 data-nosnippet>1345</a> <span class="prelude-val">Err</span>(MirEvalError::InternalError(<span class="string">"Ordering enum not found"</span>.into())) |
| <a href=#1346 id=1346 data-nosnippet>1346</a> } |
| <a href=#1347 id=1347 data-nosnippet>1347</a> } |
| <a href=#1348 id=1348 data-nosnippet>1348</a> <span class="string">"aggregate_raw_ptr" </span>=> { |
| <a href=#1349 id=1349 data-nosnippet>1349</a> <span class="kw">let </span>[data, meta] = args <span class="kw">else </span>{ |
| <a href=#1350 id=1350 data-nosnippet>1350</a> <span class="kw">return </span><span class="prelude-val">Err</span>(MirEvalError::InternalError( |
| <a href=#1351 id=1351 data-nosnippet>1351</a> <span class="string">"aggregate_raw_ptr args are not provided"</span>.into(), |
| <a href=#1352 id=1352 data-nosnippet>1352</a> )); |
| <a href=#1353 id=1353 data-nosnippet>1353</a> }; |
| <a href=#1354 id=1354 data-nosnippet>1354</a> destination.write_from_interval(<span class="self">self</span>, data.interval)<span class="question-mark">?</span>; |
| <a href=#1355 id=1355 data-nosnippet>1355</a> Interval { |
| <a href=#1356 id=1356 data-nosnippet>1356</a> addr: destination.addr.offset(data.interval.size), |
| <a href=#1357 id=1357 data-nosnippet>1357</a> size: destination.size - data.interval.size, |
| <a href=#1358 id=1358 data-nosnippet>1358</a> } |
| <a href=#1359 id=1359 data-nosnippet>1359</a> .write_from_interval(<span class="self">self</span>, meta.interval)<span class="question-mark">?</span>; |
| <a href=#1360 id=1360 data-nosnippet>1360</a> <span class="prelude-val">Ok</span>(()) |
| <a href=#1361 id=1361 data-nosnippet>1361</a> } |
| <a href=#1362 id=1362 data-nosnippet>1362</a> <span class="kw">_ if </span>needs_override => <span class="macro">not_supported!</span>(<span class="string">"intrinsic {name} is not implemented"</span>), |
| <a href=#1363 id=1363 data-nosnippet>1363</a> <span class="kw">_ </span>=> <span class="kw">return </span><span class="prelude-val">Ok</span>(<span class="bool-val">false</span>), |
| <a href=#1364 id=1364 data-nosnippet>1364</a> } |
| <a href=#1365 id=1365 data-nosnippet>1365</a> .map(|()| <span class="bool-val">true</span>) |
| <a href=#1366 id=1366 data-nosnippet>1366</a> } |
| <a href=#1367 id=1367 data-nosnippet>1367</a> |
| <a href=#1368 id=1368 data-nosnippet>1368</a> <span class="kw">fn </span>size_align_of_unsized( |
| <a href=#1369 id=1369 data-nosnippet>1369</a> <span class="kw-2">&mut </span><span class="self">self</span>, |
| <a href=#1370 id=1370 data-nosnippet>1370</a> ty: Ty<<span class="lifetime">'db</span>>, |
| <a href=#1371 id=1371 data-nosnippet>1371</a> metadata: Interval, |
| <a href=#1372 id=1372 data-nosnippet>1372</a> locals: <span class="kw-2">&</span>Locals<<span class="lifetime">'db</span>>, |
| <a href=#1373 id=1373 data-nosnippet>1373</a> ) -> <span class="prelude-ty">Result</span><<span class="lifetime">'db</span>, (usize, usize)> { |
| <a href=#1374 id=1374 data-nosnippet>1374</a> <span class="prelude-val">Ok</span>(<span class="kw">match </span>ty.kind() { |
| <a href=#1375 id=1375 data-nosnippet>1375</a> TyKind::Str => (<span class="macro">from_bytes!</span>(usize, metadata.get(<span class="self">self</span>)<span class="question-mark">?</span>), <span class="number">1</span>), |
| <a href=#1376 id=1376 data-nosnippet>1376</a> TyKind::Slice(inner) => { |
| <a href=#1377 id=1377 data-nosnippet>1377</a> <span class="kw">let </span>len = <span class="macro">from_bytes!</span>(usize, metadata.get(<span class="self">self</span>)<span class="question-mark">?</span>); |
| <a href=#1378 id=1378 data-nosnippet>1378</a> <span class="kw">let </span>(size, align) = <span class="self">self</span>.size_align_of_sized(inner, locals, <span class="string">"slice inner type"</span>)<span class="question-mark">?</span>; |
| <a href=#1379 id=1379 data-nosnippet>1379</a> (size * len, align) |
| <a href=#1380 id=1380 data-nosnippet>1380</a> } |
| <a href=#1381 id=1381 data-nosnippet>1381</a> TyKind::Dynamic(..) => <span class="self">self</span>.size_align_of_sized( |
| <a href=#1382 id=1382 data-nosnippet>1382</a> <span class="self">self</span>.vtable_map.ty_of_bytes(metadata.get(<span class="self">self</span>)<span class="question-mark">?</span>)<span class="question-mark">?</span>, |
| <a href=#1383 id=1383 data-nosnippet>1383</a> locals, |
| <a href=#1384 id=1384 data-nosnippet>1384</a> <span class="string">"dyn concrete type"</span>, |
| <a href=#1385 id=1385 data-nosnippet>1385</a> )<span class="question-mark">?</span>, |
| <a href=#1386 id=1386 data-nosnippet>1386</a> TyKind::Adt(adt_def, subst) => { |
| <a href=#1387 id=1387 data-nosnippet>1387</a> <span class="kw">let </span>id = adt_def.def_id().<span class="number">0</span>; |
| <a href=#1388 id=1388 data-nosnippet>1388</a> <span class="kw">let </span>layout = <span class="self">self</span>.layout_adt(id, subst)<span class="question-mark">?</span>; |
| <a href=#1389 id=1389 data-nosnippet>1389</a> <span class="kw">let </span>id = <span class="kw">match </span>id { |
| <a href=#1390 id=1390 data-nosnippet>1390</a> AdtId::StructId(s) => s, |
| <a href=#1391 id=1391 data-nosnippet>1391</a> <span class="kw">_ </span>=> <span class="macro">not_supported!</span>(<span class="string">"unsized enum or union"</span>), |
| <a href=#1392 id=1392 data-nosnippet>1392</a> }; |
| <a href=#1393 id=1393 data-nosnippet>1393</a> <span class="kw">let </span>field_types = <span class="self">self</span>.db.field_types(id.into()); |
| <a href=#1394 id=1394 data-nosnippet>1394</a> <span class="kw">let </span>last_field_ty = |
| <a href=#1395 id=1395 data-nosnippet>1395</a> field_types.iter().next_back().unwrap().<span class="number">1</span>.instantiate(<span class="self">self</span>.interner(), subst); |
| <a href=#1396 id=1396 data-nosnippet>1396</a> <span class="kw">let </span>sized_part_size = |
| <a href=#1397 id=1397 data-nosnippet>1397</a> layout.fields.offset(field_types.iter().count() - <span class="number">1</span>).bytes_usize(); |
| <a href=#1398 id=1398 data-nosnippet>1398</a> <span class="kw">let </span>sized_part_align = layout.align.bytes() <span class="kw">as </span>usize; |
| <a href=#1399 id=1399 data-nosnippet>1399</a> <span class="kw">let </span>(unsized_part_size, unsized_part_align) = |
| <a href=#1400 id=1400 data-nosnippet>1400</a> <span class="self">self</span>.size_align_of_unsized(last_field_ty, metadata, locals)<span class="question-mark">?</span>; |
| <a href=#1401 id=1401 data-nosnippet>1401</a> <span class="kw">let </span>align = sized_part_align.max(unsized_part_align) <span class="kw">as </span>isize; |
| <a href=#1402 id=1402 data-nosnippet>1402</a> <span class="kw">let </span>size = (sized_part_size + unsized_part_size) <span class="kw">as </span>isize; |
| <a href=#1403 id=1403 data-nosnippet>1403</a> <span class="comment">// Must add any necessary padding to `size` |
| <a href=#1404 id=1404 data-nosnippet>1404</a> // (to make it a multiple of `align`) before returning it. |
| <a href=#1405 id=1405 data-nosnippet>1405</a> // |
| <a href=#1406 id=1406 data-nosnippet>1406</a> // Namely, the returned size should be, in C notation: |
| <a href=#1407 id=1407 data-nosnippet>1407</a> // |
| <a href=#1408 id=1408 data-nosnippet>1408</a> // `size + ((size & (align-1)) ? align : 0)` |
| <a href=#1409 id=1409 data-nosnippet>1409</a> // |
| <a href=#1410 id=1410 data-nosnippet>1410</a> // emulated via the semi-standard fast bit trick: |
| <a href=#1411 id=1411 data-nosnippet>1411</a> // |
| <a href=#1412 id=1412 data-nosnippet>1412</a> // `(size + (align-1)) & -align` |
| <a href=#1413 id=1413 data-nosnippet>1413</a> </span><span class="kw">let </span>size = (size + (align - <span class="number">1</span>)) & (-align); |
| <a href=#1414 id=1414 data-nosnippet>1414</a> (size <span class="kw">as </span>usize, align <span class="kw">as </span>usize) |
| <a href=#1415 id=1415 data-nosnippet>1415</a> } |
| <a href=#1416 id=1416 data-nosnippet>1416</a> <span class="kw">_ </span>=> <span class="macro">not_supported!</span>(<span class="string">"unsized type other than str, slice, struct and dyn"</span>), |
| <a href=#1417 id=1417 data-nosnippet>1417</a> }) |
| <a href=#1418 id=1418 data-nosnippet>1418</a> } |
| <a href=#1419 id=1419 data-nosnippet>1419</a> |
| <a href=#1420 id=1420 data-nosnippet>1420</a> <span class="kw">fn </span>exec_atomic_intrinsic( |
| <a href=#1421 id=1421 data-nosnippet>1421</a> <span class="kw-2">&mut </span><span class="self">self</span>, |
| <a href=#1422 id=1422 data-nosnippet>1422</a> name: <span class="kw-2">&</span>str, |
| <a href=#1423 id=1423 data-nosnippet>1423</a> args: <span class="kw-2">&</span>[IntervalAndTy<<span class="lifetime">'db</span>>], |
| <a href=#1424 id=1424 data-nosnippet>1424</a> generic_args: GenericArgs<<span class="lifetime">'db</span>>, |
| <a href=#1425 id=1425 data-nosnippet>1425</a> destination: Interval, |
| <a href=#1426 id=1426 data-nosnippet>1426</a> locals: <span class="kw-2">&</span>Locals<<span class="lifetime">'db</span>>, |
| <a href=#1427 id=1427 data-nosnippet>1427</a> _span: MirSpan, |
| <a href=#1428 id=1428 data-nosnippet>1428</a> ) -> <span class="prelude-ty">Result</span><<span class="lifetime">'db</span>, ()> { |
| <a href=#1429 id=1429 data-nosnippet>1429</a> <span class="comment">// We are a single threaded runtime with no UB checking and no optimization, so |
| <a href=#1430 id=1430 data-nosnippet>1430</a> // we can implement atomic intrinsics as normal functions. |
| <a href=#1431 id=1431 data-nosnippet>1431</a> |
| <a href=#1432 id=1432 data-nosnippet>1432</a> </span><span class="kw">if </span>name.starts_with(<span class="string">"singlethreadfence_"</span>) || name.starts_with(<span class="string">"fence_"</span>) { |
| <a href=#1433 id=1433 data-nosnippet>1433</a> <span class="kw">return </span><span class="prelude-val">Ok</span>(()); |
| <a href=#1434 id=1434 data-nosnippet>1434</a> } |
| <a href=#1435 id=1435 data-nosnippet>1435</a> |
| <a href=#1436 id=1436 data-nosnippet>1436</a> <span class="comment">// The rest of atomic intrinsics have exactly one generic arg |
| <a href=#1437 id=1437 data-nosnippet>1437</a> |
| <a href=#1438 id=1438 data-nosnippet>1438</a> </span><span class="kw">let </span><span class="prelude-val">Some</span>(ty) = generic_args.as_slice().first().and_then(|it| it.ty()) <span class="kw">else </span>{ |
| <a href=#1439 id=1439 data-nosnippet>1439</a> <span class="kw">return </span><span class="prelude-val">Err</span>(MirEvalError::InternalError( |
| <a href=#1440 id=1440 data-nosnippet>1440</a> <span class="string">"atomic intrinsic generic arg is not provided"</span>.into(), |
| <a href=#1441 id=1441 data-nosnippet>1441</a> )); |
| <a href=#1442 id=1442 data-nosnippet>1442</a> }; |
| <a href=#1443 id=1443 data-nosnippet>1443</a> <span class="kw">let </span><span class="prelude-val">Some</span>(arg0) = args.first() <span class="kw">else </span>{ |
| <a href=#1444 id=1444 data-nosnippet>1444</a> <span class="kw">return </span><span class="prelude-val">Err</span>(MirEvalError::InternalError( |
| <a href=#1445 id=1445 data-nosnippet>1445</a> <span class="string">"atomic intrinsic arg0 is not provided"</span>.into(), |
| <a href=#1446 id=1446 data-nosnippet>1446</a> )); |
| <a href=#1447 id=1447 data-nosnippet>1447</a> }; |
| <a href=#1448 id=1448 data-nosnippet>1448</a> <span class="kw">let </span>arg0_addr = Address::from_bytes(arg0.get(<span class="self">self</span>)<span class="question-mark">?</span>)<span class="question-mark">?</span>; |
| <a href=#1449 id=1449 data-nosnippet>1449</a> <span class="kw">let </span>arg0_interval = |
| <a href=#1450 id=1450 data-nosnippet>1450</a> Interval::new(arg0_addr, <span class="self">self</span>.size_of_sized(ty, locals, <span class="string">"atomic intrinsic type arg"</span>)<span class="question-mark">?</span>); |
| <a href=#1451 id=1451 data-nosnippet>1451</a> <span class="kw">if </span>name.starts_with(<span class="string">"load_"</span>) { |
| <a href=#1452 id=1452 data-nosnippet>1452</a> <span class="kw">return </span>destination.write_from_interval(<span class="self">self</span>, arg0_interval); |
| <a href=#1453 id=1453 data-nosnippet>1453</a> } |
| <a href=#1454 id=1454 data-nosnippet>1454</a> <span class="kw">let </span><span class="prelude-val">Some</span>(arg1) = args.get(<span class="number">1</span>) <span class="kw">else </span>{ |
| <a href=#1455 id=1455 data-nosnippet>1455</a> <span class="kw">return </span><span class="prelude-val">Err</span>(MirEvalError::InternalError( |
| <a href=#1456 id=1456 data-nosnippet>1456</a> <span class="string">"atomic intrinsic arg1 is not provided"</span>.into(), |
| <a href=#1457 id=1457 data-nosnippet>1457</a> )); |
| <a href=#1458 id=1458 data-nosnippet>1458</a> }; |
| <a href=#1459 id=1459 data-nosnippet>1459</a> <span class="kw">if </span>name.starts_with(<span class="string">"store_"</span>) { |
| <a href=#1460 id=1460 data-nosnippet>1460</a> <span class="kw">return </span>arg0_interval.write_from_interval(<span class="self">self</span>, arg1.interval); |
| <a href=#1461 id=1461 data-nosnippet>1461</a> } |
| <a href=#1462 id=1462 data-nosnippet>1462</a> <span class="kw">if </span>name.starts_with(<span class="string">"xchg_"</span>) { |
| <a href=#1463 id=1463 data-nosnippet>1463</a> destination.write_from_interval(<span class="self">self</span>, arg0_interval)<span class="question-mark">?</span>; |
| <a href=#1464 id=1464 data-nosnippet>1464</a> <span class="kw">return </span>arg0_interval.write_from_interval(<span class="self">self</span>, arg1.interval); |
| <a href=#1465 id=1465 data-nosnippet>1465</a> } |
| <a href=#1466 id=1466 data-nosnippet>1466</a> <span class="kw">if </span>name.starts_with(<span class="string">"xadd_"</span>) { |
| <a href=#1467 id=1467 data-nosnippet>1467</a> destination.write_from_interval(<span class="self">self</span>, arg0_interval)<span class="question-mark">?</span>; |
| <a href=#1468 id=1468 data-nosnippet>1468</a> <span class="kw">let </span>lhs = u128::from_le_bytes(pad16(arg0_interval.get(<span class="self">self</span>)<span class="question-mark">?</span>, <span class="bool-val">false</span>)); |
| <a href=#1469 id=1469 data-nosnippet>1469</a> <span class="kw">let </span>rhs = u128::from_le_bytes(pad16(arg1.get(<span class="self">self</span>)<span class="question-mark">?</span>, <span class="bool-val">false</span>)); |
| <a href=#1470 id=1470 data-nosnippet>1470</a> <span class="kw">let </span>ans = lhs.wrapping_add(rhs); |
| <a href=#1471 id=1471 data-nosnippet>1471</a> <span class="kw">return </span>arg0_interval.write_from_bytes(<span class="self">self</span>, <span class="kw-2">&</span>ans.to_le_bytes()[<span class="number">0</span>..destination.size]); |
| <a href=#1472 id=1472 data-nosnippet>1472</a> } |
| <a href=#1473 id=1473 data-nosnippet>1473</a> <span class="kw">if </span>name.starts_with(<span class="string">"xsub_"</span>) { |
| <a href=#1474 id=1474 data-nosnippet>1474</a> destination.write_from_interval(<span class="self">self</span>, arg0_interval)<span class="question-mark">?</span>; |
| <a href=#1475 id=1475 data-nosnippet>1475</a> <span class="kw">let </span>lhs = u128::from_le_bytes(pad16(arg0_interval.get(<span class="self">self</span>)<span class="question-mark">?</span>, <span class="bool-val">false</span>)); |
| <a href=#1476 id=1476 data-nosnippet>1476</a> <span class="kw">let </span>rhs = u128::from_le_bytes(pad16(arg1.get(<span class="self">self</span>)<span class="question-mark">?</span>, <span class="bool-val">false</span>)); |
| <a href=#1477 id=1477 data-nosnippet>1477</a> <span class="kw">let </span>ans = lhs.wrapping_sub(rhs); |
| <a href=#1478 id=1478 data-nosnippet>1478</a> <span class="kw">return </span>arg0_interval.write_from_bytes(<span class="self">self</span>, <span class="kw-2">&</span>ans.to_le_bytes()[<span class="number">0</span>..destination.size]); |
| <a href=#1479 id=1479 data-nosnippet>1479</a> } |
| <a href=#1480 id=1480 data-nosnippet>1480</a> <span class="kw">if </span>name.starts_with(<span class="string">"and_"</span>) { |
| <a href=#1481 id=1481 data-nosnippet>1481</a> destination.write_from_interval(<span class="self">self</span>, arg0_interval)<span class="question-mark">?</span>; |
| <a href=#1482 id=1482 data-nosnippet>1482</a> <span class="kw">let </span>lhs = u128::from_le_bytes(pad16(arg0_interval.get(<span class="self">self</span>)<span class="question-mark">?</span>, <span class="bool-val">false</span>)); |
| <a href=#1483 id=1483 data-nosnippet>1483</a> <span class="kw">let </span>rhs = u128::from_le_bytes(pad16(arg1.get(<span class="self">self</span>)<span class="question-mark">?</span>, <span class="bool-val">false</span>)); |
| <a href=#1484 id=1484 data-nosnippet>1484</a> <span class="kw">let </span>ans = lhs & rhs; |
| <a href=#1485 id=1485 data-nosnippet>1485</a> <span class="kw">return </span>arg0_interval.write_from_bytes(<span class="self">self</span>, <span class="kw-2">&</span>ans.to_le_bytes()[<span class="number">0</span>..destination.size]); |
| <a href=#1486 id=1486 data-nosnippet>1486</a> } |
| <a href=#1487 id=1487 data-nosnippet>1487</a> <span class="kw">if </span>name.starts_with(<span class="string">"or_"</span>) { |
| <a href=#1488 id=1488 data-nosnippet>1488</a> destination.write_from_interval(<span class="self">self</span>, arg0_interval)<span class="question-mark">?</span>; |
| <a href=#1489 id=1489 data-nosnippet>1489</a> <span class="kw">let </span>lhs = u128::from_le_bytes(pad16(arg0_interval.get(<span class="self">self</span>)<span class="question-mark">?</span>, <span class="bool-val">false</span>)); |
| <a href=#1490 id=1490 data-nosnippet>1490</a> <span class="kw">let </span>rhs = u128::from_le_bytes(pad16(arg1.get(<span class="self">self</span>)<span class="question-mark">?</span>, <span class="bool-val">false</span>)); |
| <a href=#1491 id=1491 data-nosnippet>1491</a> <span class="kw">let </span>ans = lhs | rhs; |
| <a href=#1492 id=1492 data-nosnippet>1492</a> <span class="kw">return </span>arg0_interval.write_from_bytes(<span class="self">self</span>, <span class="kw-2">&</span>ans.to_le_bytes()[<span class="number">0</span>..destination.size]); |
| <a href=#1493 id=1493 data-nosnippet>1493</a> } |
| <a href=#1494 id=1494 data-nosnippet>1494</a> <span class="kw">if </span>name.starts_with(<span class="string">"xor_"</span>) { |
| <a href=#1495 id=1495 data-nosnippet>1495</a> destination.write_from_interval(<span class="self">self</span>, arg0_interval)<span class="question-mark">?</span>; |
| <a href=#1496 id=1496 data-nosnippet>1496</a> <span class="kw">let </span>lhs = u128::from_le_bytes(pad16(arg0_interval.get(<span class="self">self</span>)<span class="question-mark">?</span>, <span class="bool-val">false</span>)); |
| <a href=#1497 id=1497 data-nosnippet>1497</a> <span class="kw">let </span>rhs = u128::from_le_bytes(pad16(arg1.get(<span class="self">self</span>)<span class="question-mark">?</span>, <span class="bool-val">false</span>)); |
| <a href=#1498 id=1498 data-nosnippet>1498</a> <span class="kw">let </span>ans = lhs ^ rhs; |
| <a href=#1499 id=1499 data-nosnippet>1499</a> <span class="kw">return </span>arg0_interval.write_from_bytes(<span class="self">self</span>, <span class="kw-2">&</span>ans.to_le_bytes()[<span class="number">0</span>..destination.size]); |
| <a href=#1500 id=1500 data-nosnippet>1500</a> } |
| <a href=#1501 id=1501 data-nosnippet>1501</a> <span class="kw">if </span>name.starts_with(<span class="string">"nand_"</span>) { |
| <a href=#1502 id=1502 data-nosnippet>1502</a> destination.write_from_interval(<span class="self">self</span>, arg0_interval)<span class="question-mark">?</span>; |
| <a href=#1503 id=1503 data-nosnippet>1503</a> <span class="kw">let </span>lhs = u128::from_le_bytes(pad16(arg0_interval.get(<span class="self">self</span>)<span class="question-mark">?</span>, <span class="bool-val">false</span>)); |
| <a href=#1504 id=1504 data-nosnippet>1504</a> <span class="kw">let </span>rhs = u128::from_le_bytes(pad16(arg1.get(<span class="self">self</span>)<span class="question-mark">?</span>, <span class="bool-val">false</span>)); |
| <a href=#1505 id=1505 data-nosnippet>1505</a> <span class="kw">let </span>ans = !(lhs & rhs); |
| <a href=#1506 id=1506 data-nosnippet>1506</a> <span class="kw">return </span>arg0_interval.write_from_bytes(<span class="self">self</span>, <span class="kw-2">&</span>ans.to_le_bytes()[<span class="number">0</span>..destination.size]); |
| <a href=#1507 id=1507 data-nosnippet>1507</a> } |
| <a href=#1508 id=1508 data-nosnippet>1508</a> <span class="kw">let </span><span class="prelude-val">Some</span>(arg2) = args.get(<span class="number">2</span>) <span class="kw">else </span>{ |
| <a href=#1509 id=1509 data-nosnippet>1509</a> <span class="kw">return </span><span class="prelude-val">Err</span>(MirEvalError::InternalError( |
| <a href=#1510 id=1510 data-nosnippet>1510</a> <span class="string">"atomic intrinsic arg2 is not provided"</span>.into(), |
| <a href=#1511 id=1511 data-nosnippet>1511</a> )); |
| <a href=#1512 id=1512 data-nosnippet>1512</a> }; |
| <a href=#1513 id=1513 data-nosnippet>1513</a> <span class="kw">if </span>name.starts_with(<span class="string">"cxchg_"</span>) || name.starts_with(<span class="string">"cxchgweak_"</span>) { |
| <a href=#1514 id=1514 data-nosnippet>1514</a> <span class="kw">let </span>dest = <span class="kw">if </span>arg1.get(<span class="self">self</span>)<span class="question-mark">? </span>== arg0_interval.get(<span class="self">self</span>)<span class="question-mark">? </span>{ |
| <a href=#1515 id=1515 data-nosnippet>1515</a> arg0_interval.write_from_interval(<span class="self">self</span>, arg2.interval)<span class="question-mark">?</span>; |
| <a href=#1516 id=1516 data-nosnippet>1516</a> (arg1.interval, <span class="bool-val">true</span>) |
| <a href=#1517 id=1517 data-nosnippet>1517</a> } <span class="kw">else </span>{ |
| <a href=#1518 id=1518 data-nosnippet>1518</a> (arg0_interval, <span class="bool-val">false</span>) |
| <a href=#1519 id=1519 data-nosnippet>1519</a> }; |
| <a href=#1520 id=1520 data-nosnippet>1520</a> <span class="kw">let </span>result_ty = Ty::new_tup_from_iter( |
| <a href=#1521 id=1521 data-nosnippet>1521</a> <span class="self">self</span>.interner(), |
| <a href=#1522 id=1522 data-nosnippet>1522</a> [ty, Ty::new_bool(<span class="self">self</span>.interner())].into_iter(), |
| <a href=#1523 id=1523 data-nosnippet>1523</a> ); |
| <a href=#1524 id=1524 data-nosnippet>1524</a> <span class="kw">let </span>layout = <span class="self">self</span>.layout(result_ty)<span class="question-mark">?</span>; |
| <a href=#1525 id=1525 data-nosnippet>1525</a> <span class="kw">let </span>result = <span class="self">self</span>.construct_with_layout( |
| <a href=#1526 id=1526 data-nosnippet>1526</a> layout.size.bytes_usize(), |
| <a href=#1527 id=1527 data-nosnippet>1527</a> <span class="kw-2">&</span>layout, |
| <a href=#1528 id=1528 data-nosnippet>1528</a> <span class="prelude-val">None</span>, |
| <a href=#1529 id=1529 data-nosnippet>1529</a> [IntervalOrOwned::Borrowed(dest.<span class="number">0</span>), IntervalOrOwned::Owned(<span class="macro">vec!</span>[u8::from(dest.<span class="number">1</span>)])] |
| <a href=#1530 id=1530 data-nosnippet>1530</a> .into_iter(), |
| <a href=#1531 id=1531 data-nosnippet>1531</a> )<span class="question-mark">?</span>; |
| <a href=#1532 id=1532 data-nosnippet>1532</a> <span class="kw">return </span>destination.write_from_bytes(<span class="self">self</span>, <span class="kw-2">&</span>result); |
| <a href=#1533 id=1533 data-nosnippet>1533</a> } |
| <a href=#1534 id=1534 data-nosnippet>1534</a> <span class="macro">not_supported!</span>(<span class="string">"unknown atomic intrinsic {name}"</span>); |
| <a href=#1535 id=1535 data-nosnippet>1535</a> } |
| <a href=#1536 id=1536 data-nosnippet>1536</a>}</code></pre></div></section></main></body></html> |
