| use std::cell::{Cell, RefCell}; |
| |
| use gccjit::{ |
| Block, CType, Context, Function, FunctionPtrType, FunctionType, LValue, Location, RValue, Type, |
| }; |
| use rustc_abi::{HasDataLayout, PointeeInfo, Size, TargetDataLayout, VariantIdx}; |
| use rustc_codegen_ssa::base::wants_msvc_seh; |
| use rustc_codegen_ssa::errors as ssa_errors; |
| use rustc_codegen_ssa::traits::{BackendTypes, BaseTypeCodegenMethods, MiscCodegenMethods}; |
| use rustc_data_structures::base_n::{ALPHANUMERIC_ONLY, ToBaseN}; |
| use rustc_data_structures::fx::{FxHashMap, FxHashSet}; |
| use rustc_middle::mir::mono::CodegenUnit; |
| use rustc_middle::span_bug; |
| use rustc_middle::ty::layout::{ |
| FnAbiError, FnAbiOf, FnAbiOfHelpers, FnAbiRequest, HasTyCtxt, HasTypingEnv, LayoutError, |
| LayoutOfHelpers, |
| }; |
| use rustc_middle::ty::{self, ExistentialTraitRef, Instance, Ty, TyCtxt}; |
| use rustc_session::Session; |
| use rustc_span::source_map::respan; |
| use rustc_span::{DUMMY_SP, Span}; |
| use rustc_target::spec::{ |
| HasTargetSpec, HasWasmCAbiOpt, HasX86AbiOpt, Target, TlsModel, WasmCAbi, X86Abi, |
| }; |
| |
| use crate::callee::get_fn; |
| use crate::common::SignType; |
| |
| #[cfg_attr(not(feature = "master"), allow(dead_code))] |
| pub struct CodegenCx<'gcc, 'tcx> { |
| pub codegen_unit: &'tcx CodegenUnit<'tcx>, |
| pub context: &'gcc Context<'gcc>, |
| |
| // TODO(bjorn3): Can this field be removed? |
| pub current_func: RefCell<Option<Function<'gcc>>>, |
| pub normal_function_addresses: RefCell<FxHashSet<RValue<'gcc>>>, |
| pub function_address_names: RefCell<FxHashMap<RValue<'gcc>, String>>, |
| |
| pub functions: RefCell<FxHashMap<String, Function<'gcc>>>, |
| pub intrinsics: RefCell<FxHashMap<String, Function<'gcc>>>, |
| |
| pub tls_model: gccjit::TlsModel, |
| |
| pub bool_type: Type<'gcc>, |
| pub i8_type: Type<'gcc>, |
| pub i16_type: Type<'gcc>, |
| pub i32_type: Type<'gcc>, |
| pub i64_type: Type<'gcc>, |
| pub i128_type: Type<'gcc>, |
| pub isize_type: Type<'gcc>, |
| |
| pub u8_type: Type<'gcc>, |
| pub u16_type: Type<'gcc>, |
| pub u32_type: Type<'gcc>, |
| pub u64_type: Type<'gcc>, |
| pub u128_type: Type<'gcc>, |
| pub usize_type: Type<'gcc>, |
| |
| pub char_type: Type<'gcc>, |
| pub uchar_type: Type<'gcc>, |
| pub short_type: Type<'gcc>, |
| pub ushort_type: Type<'gcc>, |
| pub int_type: Type<'gcc>, |
| pub uint_type: Type<'gcc>, |
| pub long_type: Type<'gcc>, |
| pub ulong_type: Type<'gcc>, |
| pub longlong_type: Type<'gcc>, |
| pub ulonglong_type: Type<'gcc>, |
| pub sizet_type: Type<'gcc>, |
| |
| pub supports_128bit_integers: bool, |
| pub supports_f16_type: bool, |
| pub supports_f32_type: bool, |
| pub supports_f64_type: bool, |
| pub supports_f128_type: bool, |
| |
| pub float_type: Type<'gcc>, |
| pub double_type: Type<'gcc>, |
| |
| pub linkage: Cell<FunctionType>, |
| pub scalar_types: RefCell<FxHashMap<Ty<'tcx>, Type<'gcc>>>, |
| pub types: RefCell<FxHashMap<(Ty<'tcx>, Option<VariantIdx>), Type<'gcc>>>, |
| pub tcx: TyCtxt<'tcx>, |
| |
| pub struct_types: RefCell<FxHashMap<Vec<Type<'gcc>>, Type<'gcc>>>, |
| |
| /// Cache instances of monomorphic and polymorphic items |
| pub instances: RefCell<FxHashMap<Instance<'tcx>, LValue<'gcc>>>, |
| /// Cache function instances of monomorphic and polymorphic items |
| pub function_instances: RefCell<FxHashMap<Instance<'tcx>, Function<'gcc>>>, |
| /// Cache generated vtables |
| pub vtables: |
| RefCell<FxHashMap<(Ty<'tcx>, Option<ty::ExistentialTraitRef<'tcx>>), RValue<'gcc>>>, |
| |
| // TODO(antoyo): improve the SSA API to not require those. |
| /// Mapping from function pointer type to indexes of on stack parameters. |
| pub on_stack_params: RefCell<FxHashMap<FunctionPtrType<'gcc>, FxHashSet<usize>>>, |
| /// Mapping from function to indexes of on stack parameters. |
| pub on_stack_function_params: RefCell<FxHashMap<Function<'gcc>, FxHashSet<usize>>>, |
| |
| /// Cache of emitted const globals (value -> global) |
| pub const_globals: RefCell<FxHashMap<RValue<'gcc>, RValue<'gcc>>>, |
| |
| /// Map from the address of a global variable (rvalue) to the global variable itself (lvalue). |
| /// TODO(antoyo): remove when the rustc API is fixed. |
| pub global_lvalues: RefCell<FxHashMap<RValue<'gcc>, LValue<'gcc>>>, |
| |
| /// Cache of constant strings, |
| pub const_str_cache: RefCell<FxHashMap<String, LValue<'gcc>>>, |
| |
| /// Cache of globals. |
| pub globals: RefCell<FxHashMap<String, RValue<'gcc>>>, |
| |
| /// A counter that is used for generating local symbol names |
| local_gen_sym_counter: Cell<usize>, |
| |
| eh_personality: Cell<Option<RValue<'gcc>>>, |
| #[cfg(feature = "master")] |
| pub rust_try_fn: Cell<Option<(Type<'gcc>, Function<'gcc>)>>, |
| |
| pub pointee_infos: RefCell<FxHashMap<(Ty<'tcx>, Size), Option<PointeeInfo>>>, |
| |
| /// NOTE: a hack is used because the rustc API is not suitable to libgccjit and as such, |
| /// `const_undef()` returns struct as pointer so that they can later be assigned a value. |
| /// As such, this set remembers which of these pointers were returned by this function so that |
| /// they can be dereferenced later. |
| /// FIXME(antoyo): fix the rustc API to avoid having this hack. |
| pub structs_as_pointer: RefCell<FxHashSet<RValue<'gcc>>>, |
| |
| #[cfg(feature = "master")] |
| pub cleanup_blocks: RefCell<FxHashSet<Block<'gcc>>>, |
| } |
| |
| impl<'gcc, 'tcx> CodegenCx<'gcc, 'tcx> { |
| #[allow(clippy::too_many_arguments)] |
| pub fn new( |
| context: &'gcc Context<'gcc>, |
| codegen_unit: &'tcx CodegenUnit<'tcx>, |
| tcx: TyCtxt<'tcx>, |
| supports_128bit_integers: bool, |
| supports_f16_type: bool, |
| supports_f32_type: bool, |
| supports_f64_type: bool, |
| supports_f128_type: bool, |
| ) -> Self { |
| let create_type = |ctype, rust_type| { |
| let layout = tcx |
| .layout_of(ty::TypingEnv::fully_monomorphized().as_query_input(rust_type)) |
| .unwrap(); |
| let align = layout.align.abi.bytes(); |
| #[cfg(feature = "master")] |
| { |
| context.new_c_type(ctype).get_aligned(align) |
| } |
| #[cfg(not(feature = "master"))] |
| { |
| // Since libgccjit 12 doesn't contain the fix to compare aligned integer types, |
| // only align u128 and i128. |
| if layout.ty.int_size_and_signed(tcx).0.bytes() == 16 { |
| context.new_c_type(ctype).get_aligned(align) |
| } else { |
| context.new_c_type(ctype) |
| } |
| } |
| }; |
| |
| let i8_type = create_type(CType::Int8t, tcx.types.i8); |
| let i16_type = create_type(CType::Int16t, tcx.types.i16); |
| let i32_type = create_type(CType::Int32t, tcx.types.i32); |
| let i64_type = create_type(CType::Int64t, tcx.types.i64); |
| let u8_type = create_type(CType::UInt8t, tcx.types.u8); |
| let u16_type = create_type(CType::UInt16t, tcx.types.u16); |
| let u32_type = create_type(CType::UInt32t, tcx.types.u32); |
| let u64_type = create_type(CType::UInt64t, tcx.types.u64); |
| |
| let (i128_type, u128_type) = if supports_128bit_integers { |
| let i128_type = create_type(CType::Int128t, tcx.types.i128); |
| let u128_type = create_type(CType::UInt128t, tcx.types.u128); |
| (i128_type, u128_type) |
| } else { |
| /*let layout = tcx.layout_of(ParamEnv::reveal_all().and(tcx.types.i128)).unwrap(); |
| let i128_align = layout.align.abi.bytes(); |
| let layout = tcx.layout_of(ParamEnv::reveal_all().and(tcx.types.u128)).unwrap(); |
| let u128_align = layout.align.abi.bytes();*/ |
| |
| // TODO(antoyo): re-enable the alignment when libgccjit fixed the issue in |
| // gcc_jit_context_new_array_constructor (it should not use reinterpret_cast). |
| let i128_type = context.new_array_type(None, i64_type, 2)/*.get_aligned(i128_align)*/; |
| let u128_type = context.new_array_type(None, u64_type, 2)/*.get_aligned(u128_align)*/; |
| (i128_type, u128_type) |
| }; |
| |
| let tls_model = to_gcc_tls_mode(tcx.sess.tls_model()); |
| |
| // TODO(antoyo): set alignment on those types as well. |
| let float_type = context.new_type::<f32>(); |
| let double_type = context.new_type::<f64>(); |
| |
| let char_type = context.new_c_type(CType::Char); |
| let uchar_type = context.new_c_type(CType::UChar); |
| let short_type = context.new_c_type(CType::Short); |
| let ushort_type = context.new_c_type(CType::UShort); |
| let int_type = context.new_c_type(CType::Int); |
| let uint_type = context.new_c_type(CType::UInt); |
| let long_type = context.new_c_type(CType::Long); |
| let ulong_type = context.new_c_type(CType::ULong); |
| let longlong_type = context.new_c_type(CType::LongLong); |
| let ulonglong_type = context.new_c_type(CType::ULongLong); |
| let sizet_type = context.new_c_type(CType::SizeT); |
| |
| let usize_type = sizet_type; |
| let isize_type = usize_type; |
| let bool_type = context.new_type::<bool>(); |
| |
| let mut functions = FxHashMap::default(); |
| let builtins = [ |
| "__builtin_unreachable", |
| "abort", |
| "__builtin_expect", /*"__builtin_expect_with_probability",*/ |
| "__builtin_constant_p", |
| "__builtin_add_overflow", |
| "__builtin_mul_overflow", |
| "__builtin_saddll_overflow", |
| /*"__builtin_sadd_overflow",*/ |
| "__builtin_smulll_overflow", /*"__builtin_smul_overflow",*/ |
| "__builtin_ssubll_overflow", |
| /*"__builtin_ssub_overflow",*/ "__builtin_sub_overflow", |
| "__builtin_uaddll_overflow", |
| "__builtin_uadd_overflow", |
| "__builtin_umulll_overflow", |
| "__builtin_umul_overflow", |
| "__builtin_usubll_overflow", |
| "__builtin_usub_overflow", |
| "__builtin_powif", |
| "__builtin_powi", |
| "fabsf", |
| "fabs", |
| "copysignf", |
| "copysign", |
| "nearbyintf", |
| "nearbyint", |
| ]; |
| |
| for builtin in builtins.iter() { |
| functions.insert(builtin.to_string(), context.get_builtin_function(builtin)); |
| } |
| |
| let mut cx = Self { |
| codegen_unit, |
| context, |
| current_func: RefCell::new(None), |
| normal_function_addresses: Default::default(), |
| function_address_names: Default::default(), |
| functions: RefCell::new(functions), |
| intrinsics: RefCell::new(FxHashMap::default()), |
| |
| tls_model, |
| |
| bool_type, |
| i8_type, |
| i16_type, |
| i32_type, |
| i64_type, |
| i128_type, |
| isize_type, |
| usize_type, |
| u8_type, |
| u16_type, |
| u32_type, |
| u64_type, |
| u128_type, |
| char_type, |
| uchar_type, |
| short_type, |
| ushort_type, |
| int_type, |
| uint_type, |
| long_type, |
| ulong_type, |
| longlong_type, |
| ulonglong_type, |
| sizet_type, |
| |
| supports_128bit_integers, |
| supports_f16_type, |
| supports_f32_type, |
| supports_f64_type, |
| supports_f128_type, |
| |
| float_type, |
| double_type, |
| |
| linkage: Cell::new(FunctionType::Internal), |
| instances: Default::default(), |
| function_instances: Default::default(), |
| on_stack_params: Default::default(), |
| on_stack_function_params: Default::default(), |
| vtables: Default::default(), |
| const_globals: Default::default(), |
| global_lvalues: Default::default(), |
| const_str_cache: Default::default(), |
| globals: Default::default(), |
| scalar_types: Default::default(), |
| types: Default::default(), |
| tcx, |
| struct_types: Default::default(), |
| local_gen_sym_counter: Cell::new(0), |
| eh_personality: Cell::new(None), |
| #[cfg(feature = "master")] |
| rust_try_fn: Cell::new(None), |
| pointee_infos: Default::default(), |
| structs_as_pointer: Default::default(), |
| #[cfg(feature = "master")] |
| cleanup_blocks: Default::default(), |
| }; |
| // TODO(antoyo): instead of doing this, add SsizeT to libgccjit. |
| cx.isize_type = usize_type.to_signed(&cx); |
| cx |
| } |
| |
| pub fn rvalue_as_function(&self, value: RValue<'gcc>) -> Function<'gcc> { |
| let function: Function<'gcc> = unsafe { std::mem::transmute(value) }; |
| debug_assert!( |
| self.functions.borrow().values().any(|value| *value == function), |
| "{:?} ({:?}) is not a function", |
| value, |
| value.get_type() |
| ); |
| function |
| } |
| |
| pub fn is_native_int_type(&self, typ: Type<'gcc>) -> bool { |
| let types = [ |
| self.u8_type, |
| self.u16_type, |
| self.u32_type, |
| self.u64_type, |
| self.i8_type, |
| self.i16_type, |
| self.i32_type, |
| self.i64_type, |
| ]; |
| |
| for native_type in types { |
| if native_type.is_compatible_with(typ) { |
| return true; |
| } |
| } |
| |
| self.supports_128bit_integers |
| && (self.u128_type.is_compatible_with(typ) || self.i128_type.is_compatible_with(typ)) |
| } |
| |
| pub fn is_non_native_int_type(&self, typ: Type<'gcc>) -> bool { |
| !self.supports_128bit_integers |
| && (self.u128_type.is_compatible_with(typ) || self.i128_type.is_compatible_with(typ)) |
| } |
| |
| pub fn is_native_int_type_or_bool(&self, typ: Type<'gcc>) -> bool { |
| self.is_native_int_type(typ) || typ.is_compatible_with(self.bool_type) |
| } |
| |
| pub fn is_int_type_or_bool(&self, typ: Type<'gcc>) -> bool { |
| self.is_native_int_type(typ) |
| || self.is_non_native_int_type(typ) |
| || typ.is_compatible_with(self.bool_type) |
| } |
| |
| pub fn sess(&self) -> &'tcx Session { |
| self.tcx.sess |
| } |
| |
| pub fn bitcast_if_needed( |
| &self, |
| value: RValue<'gcc>, |
| expected_type: Type<'gcc>, |
| ) -> RValue<'gcc> { |
| if value.get_type() != expected_type { |
| self.context.new_bitcast(None, value, expected_type) |
| } else { |
| value |
| } |
| } |
| } |
| |
| impl<'gcc, 'tcx> BackendTypes for CodegenCx<'gcc, 'tcx> { |
| type Value = RValue<'gcc>; |
| type Metadata = RValue<'gcc>; |
| // TODO(antoyo): change to Function<'gcc>. |
| type Function = RValue<'gcc>; |
| |
| type BasicBlock = Block<'gcc>; |
| type Type = Type<'gcc>; |
| type Funclet = (); // TODO(antoyo) |
| |
| type DIScope = (); // TODO(antoyo) |
| type DILocation = Location<'gcc>; |
| type DIVariable = (); // TODO(antoyo) |
| } |
| |
| impl<'gcc, 'tcx> MiscCodegenMethods<'tcx> for CodegenCx<'gcc, 'tcx> { |
| fn vtables( |
| &self, |
| ) -> &RefCell<FxHashMap<(Ty<'tcx>, Option<ExistentialTraitRef<'tcx>>), RValue<'gcc>>> { |
| &self.vtables |
| } |
| |
| fn get_fn(&self, instance: Instance<'tcx>) -> RValue<'gcc> { |
| let func = get_fn(self, instance); |
| *self.current_func.borrow_mut() = Some(func); |
| // FIXME(antoyo): this is a wrong cast. That requires changing the compiler API. |
| unsafe { std::mem::transmute(func) } |
| } |
| |
| fn get_fn_addr(&self, instance: Instance<'tcx>) -> RValue<'gcc> { |
| let func_name = self.tcx.symbol_name(instance).name; |
| |
| let func = if self.intrinsics.borrow().contains_key(func_name) { |
| self.intrinsics.borrow()[func_name] |
| } else if let Some(variable) = self.get_declared_value(func_name) { |
| return variable; |
| } else { |
| get_fn(self, instance) |
| }; |
| let ptr = func.get_address(None); |
| |
| // TODO(antoyo): don't do this twice: i.e. in declare_fn and here. |
| // FIXME(antoyo): the rustc API seems to call get_fn_addr() when not needed (e.g. for FFI). |
| |
| self.normal_function_addresses.borrow_mut().insert(ptr); |
| self.function_address_names.borrow_mut().insert(ptr, func_name.to_string()); |
| |
| ptr |
| } |
| |
| fn eh_personality(&self) -> RValue<'gcc> { |
| // The exception handling personality function. |
| // |
| // If our compilation unit has the `eh_personality` lang item somewhere |
| // within it, then we just need to codegen that. Otherwise, we're |
| // building an rlib which will depend on some upstream implementation of |
| // this function, so we just codegen a generic reference to it. We don't |
| // specify any of the types for the function, we just make it a symbol |
| // that LLVM can later use. |
| // |
| // Note that MSVC is a little special here in that we don't use the |
| // `eh_personality` lang item at all. Currently LLVM has support for |
| // both Dwarf and SEH unwind mechanisms for MSVC targets and uses the |
| // *name of the personality function* to decide what kind of unwind side |
| // tables/landing pads to emit. It looks like Dwarf is used by default, |
| // injecting a dependency on the `_Unwind_Resume` symbol for resuming |
| // an "exception", but for MSVC we want to force SEH. This means that we |
| // can't actually have the personality function be our standard |
| // `rust_eh_personality` function, but rather we wired it up to the |
| // CRT's custom personality function, which forces LLVM to consider |
| // landing pads as "landing pads for SEH". |
| if let Some(llpersonality) = self.eh_personality.get() { |
| return llpersonality; |
| } |
| let tcx = self.tcx; |
| let func = match tcx.lang_items().eh_personality() { |
| Some(def_id) if !wants_msvc_seh(self.sess()) => { |
| let instance = ty::Instance::expect_resolve( |
| tcx, |
| self.typing_env(), |
| def_id, |
| ty::List::empty(), |
| DUMMY_SP, |
| ); |
| |
| let symbol_name = tcx.symbol_name(instance).name; |
| let fn_abi = self.fn_abi_of_instance(instance, ty::List::empty()); |
| self.linkage.set(FunctionType::Extern); |
| let func = self.declare_fn(symbol_name, fn_abi); |
| let func: RValue<'gcc> = unsafe { std::mem::transmute(func) }; |
| func |
| } |
| _ => { |
| let name = if wants_msvc_seh(self.sess()) { |
| "__CxxFrameHandler3" |
| } else { |
| "rust_eh_personality" |
| }; |
| let func = self.declare_func(name, self.type_i32(), &[], true); |
| unsafe { std::mem::transmute::<Function<'gcc>, RValue<'gcc>>(func) } |
| } |
| }; |
| // TODO(antoyo): apply target cpu attributes. |
| self.eh_personality.set(Some(func)); |
| func |
| } |
| |
| fn sess(&self) -> &Session { |
| self.tcx.sess |
| } |
| |
| fn codegen_unit(&self) -> &'tcx CodegenUnit<'tcx> { |
| self.codegen_unit |
| } |
| |
| fn set_frame_pointer_type(&self, _llfn: RValue<'gcc>) { |
| // TODO(antoyo) |
| } |
| |
| fn apply_target_cpu_attr(&self, _llfn: RValue<'gcc>) { |
| // TODO(antoyo) |
| } |
| |
| fn declare_c_main(&self, fn_type: Self::Type) -> Option<Self::Function> { |
| let entry_name = self.sess().target.entry_name.as_ref(); |
| if !self.functions.borrow().contains_key(entry_name) { |
| Some(self.declare_entry_fn(entry_name, fn_type, ())) |
| } else { |
| // If the symbol already exists, it is an error: for example, the user wrote |
| // #[no_mangle] extern "C" fn main(..) {..} |
| None |
| } |
| } |
| } |
| |
| impl<'gcc, 'tcx> HasTyCtxt<'tcx> for CodegenCx<'gcc, 'tcx> { |
| fn tcx(&self) -> TyCtxt<'tcx> { |
| self.tcx |
| } |
| } |
| |
| impl<'gcc, 'tcx> HasDataLayout for CodegenCx<'gcc, 'tcx> { |
| fn data_layout(&self) -> &TargetDataLayout { |
| &self.tcx.data_layout |
| } |
| } |
| |
| impl<'gcc, 'tcx> HasTargetSpec for CodegenCx<'gcc, 'tcx> { |
| fn target_spec(&self) -> &Target { |
| &self.tcx.sess.target |
| } |
| } |
| |
| impl<'gcc, 'tcx> HasWasmCAbiOpt for CodegenCx<'gcc, 'tcx> { |
| fn wasm_c_abi_opt(&self) -> WasmCAbi { |
| self.tcx.sess.opts.unstable_opts.wasm_c_abi |
| } |
| } |
| |
| impl<'gcc, 'tcx> HasX86AbiOpt for CodegenCx<'gcc, 'tcx> { |
| fn x86_abi_opt(&self) -> X86Abi { |
| X86Abi { |
| regparm: self.tcx.sess.opts.unstable_opts.regparm, |
| reg_struct_return: self.tcx.sess.opts.unstable_opts.reg_struct_return, |
| } |
| } |
| } |
| |
| impl<'gcc, 'tcx> LayoutOfHelpers<'tcx> for CodegenCx<'gcc, 'tcx> { |
| #[inline] |
| fn handle_layout_err(&self, err: LayoutError<'tcx>, span: Span, ty: Ty<'tcx>) -> ! { |
| if let LayoutError::SizeOverflow(_) | LayoutError::ReferencesError(_) = err { |
| self.tcx.dcx().emit_fatal(respan(span, err.into_diagnostic())) |
| } else { |
| self.tcx.dcx().emit_fatal(ssa_errors::FailedToGetLayout { span, ty, err }) |
| } |
| } |
| } |
| |
| impl<'gcc, 'tcx> FnAbiOfHelpers<'tcx> for CodegenCx<'gcc, 'tcx> { |
| #[inline] |
| fn handle_fn_abi_err( |
| &self, |
| err: FnAbiError<'tcx>, |
| span: Span, |
| fn_abi_request: FnAbiRequest<'tcx>, |
| ) -> ! { |
| if let FnAbiError::Layout(LayoutError::SizeOverflow(_)) = err { |
| self.tcx.dcx().emit_fatal(respan(span, err)) |
| } else { |
| match fn_abi_request { |
| FnAbiRequest::OfFnPtr { sig, extra_args } => { |
| span_bug!(span, "`fn_abi_of_fn_ptr({sig}, {extra_args:?})` failed: {err:?}"); |
| } |
| FnAbiRequest::OfInstance { instance, extra_args } => { |
| span_bug!( |
| span, |
| "`fn_abi_of_instance({instance}, {extra_args:?})` failed: {err:?}" |
| ); |
| } |
| } |
| } |
| } |
| } |
| |
| impl<'tcx, 'gcc> HasTypingEnv<'tcx> for CodegenCx<'gcc, 'tcx> { |
| fn typing_env(&self) -> ty::TypingEnv<'tcx> { |
| ty::TypingEnv::fully_monomorphized() |
| } |
| } |
| |
| impl<'b, 'tcx> CodegenCx<'b, 'tcx> { |
| /// Generates a new symbol name with the given prefix. This symbol name must |
| /// only be used for definitions with `internal` or `private` linkage. |
| pub fn generate_local_symbol_name(&self, prefix: &str) -> String { |
| let idx = self.local_gen_sym_counter.get(); |
| self.local_gen_sym_counter.set(idx + 1); |
| // Include a '.' character, so there can be no accidental conflicts with |
| // user defined names |
| let mut name = String::with_capacity(prefix.len() + 6); |
| name.push_str(prefix); |
| name.push('.'); |
| name.push_str(&(idx as u64).to_base(ALPHANUMERIC_ONLY)); |
| name |
| } |
| } |
| |
| fn to_gcc_tls_mode(tls_model: TlsModel) -> gccjit::TlsModel { |
| match tls_model { |
| TlsModel::GeneralDynamic => gccjit::TlsModel::GlobalDynamic, |
| TlsModel::LocalDynamic => gccjit::TlsModel::LocalDynamic, |
| TlsModel::InitialExec => gccjit::TlsModel::InitialExec, |
| TlsModel::LocalExec => gccjit::TlsModel::LocalExec, |
| TlsModel::Emulated => gccjit::TlsModel::GlobalDynamic, |
| } |
| } |
