| use crate::abi::FnAbiLlvmExt; |
| use crate::attributes; |
| use crate::common::Funclet; |
| use crate::context::CodegenCx; |
| use crate::llvm::{self, AtomicOrdering, AtomicRmwBinOp, BasicBlock, False, True}; |
| use crate::llvm_util; |
| use crate::type_::Type; |
| use crate::type_of::LayoutLlvmExt; |
| use crate::value::Value; |
| use libc::{c_char, c_uint}; |
| use rustc_codegen_ssa::common::{IntPredicate, RealPredicate, SynchronizationScope, TypeKind}; |
| use rustc_codegen_ssa::mir::operand::{OperandRef, OperandValue}; |
| use rustc_codegen_ssa::mir::place::PlaceRef; |
| use rustc_codegen_ssa::traits::*; |
| use rustc_codegen_ssa::MemFlags; |
| use rustc_data_structures::small_c_str::SmallCStr; |
| use rustc_hir::def_id::DefId; |
| use rustc_middle::middle::codegen_fn_attrs::CodegenFnAttrs; |
| use rustc_middle::ty::layout::{ |
| FnAbiError, FnAbiOfHelpers, FnAbiRequest, LayoutError, LayoutOfHelpers, TyAndLayout, |
| }; |
| use rustc_middle::ty::{self, Instance, Ty, TyCtxt}; |
| use rustc_sanitizers::{cfi, kcfi}; |
| use rustc_session::config::OptLevel; |
| use rustc_span::Span; |
| use rustc_target::abi::{self, call::FnAbi, Align, Size, WrappingRange}; |
| use rustc_target::spec::{HasTargetSpec, SanitizerSet, Target}; |
| use smallvec::SmallVec; |
| use std::borrow::Cow; |
| use std::iter; |
| use std::ops::Deref; |
| use std::ptr; |
| |
| // All Builders must have an llfn associated with them |
| #[must_use] |
| pub struct Builder<'a, 'll, 'tcx> { |
| pub llbuilder: &'ll mut llvm::Builder<'ll>, |
| pub cx: &'a CodegenCx<'ll, 'tcx>, |
| } |
| |
| impl Drop for Builder<'_, '_, '_> { |
| fn drop(&mut self) { |
| unsafe { |
| llvm::LLVMDisposeBuilder(&mut *(self.llbuilder as *mut _)); |
| } |
| } |
| } |
| |
| /// Empty string, to be used where LLVM expects an instruction name, indicating |
| /// that the instruction is to be left unnamed (i.e. numbered, in textual IR). |
| // FIXME(eddyb) pass `&CStr` directly to FFI once it's a thin pointer. |
| const UNNAMED: *const c_char = c"".as_ptr(); |
| |
| impl<'ll, 'tcx> BackendTypes for Builder<'_, 'll, 'tcx> { |
| type Value = <CodegenCx<'ll, 'tcx> as BackendTypes>::Value; |
| type Function = <CodegenCx<'ll, 'tcx> as BackendTypes>::Function; |
| type BasicBlock = <CodegenCx<'ll, 'tcx> as BackendTypes>::BasicBlock; |
| type Type = <CodegenCx<'ll, 'tcx> as BackendTypes>::Type; |
| type Funclet = <CodegenCx<'ll, 'tcx> as BackendTypes>::Funclet; |
| |
| type DIScope = <CodegenCx<'ll, 'tcx> as BackendTypes>::DIScope; |
| type DILocation = <CodegenCx<'ll, 'tcx> as BackendTypes>::DILocation; |
| type DIVariable = <CodegenCx<'ll, 'tcx> as BackendTypes>::DIVariable; |
| } |
| |
| impl abi::HasDataLayout for Builder<'_, '_, '_> { |
| fn data_layout(&self) -> &abi::TargetDataLayout { |
| self.cx.data_layout() |
| } |
| } |
| |
| impl<'tcx> ty::layout::HasTyCtxt<'tcx> for Builder<'_, '_, 'tcx> { |
| #[inline] |
| fn tcx(&self) -> TyCtxt<'tcx> { |
| self.cx.tcx |
| } |
| } |
| |
| impl<'tcx> ty::layout::HasParamEnv<'tcx> for Builder<'_, '_, 'tcx> { |
| fn param_env(&self) -> ty::ParamEnv<'tcx> { |
| self.cx.param_env() |
| } |
| } |
| |
| impl HasTargetSpec for Builder<'_, '_, '_> { |
| #[inline] |
| fn target_spec(&self) -> &Target { |
| self.cx.target_spec() |
| } |
| } |
| |
| impl<'tcx> LayoutOfHelpers<'tcx> for Builder<'_, '_, 'tcx> { |
| type LayoutOfResult = TyAndLayout<'tcx>; |
| |
| #[inline] |
| fn handle_layout_err(&self, err: LayoutError<'tcx>, span: Span, ty: Ty<'tcx>) -> ! { |
| self.cx.handle_layout_err(err, span, ty) |
| } |
| } |
| |
| impl<'tcx> FnAbiOfHelpers<'tcx> for Builder<'_, '_, 'tcx> { |
| type FnAbiOfResult = &'tcx FnAbi<'tcx, Ty<'tcx>>; |
| |
| #[inline] |
| fn handle_fn_abi_err( |
| &self, |
| err: FnAbiError<'tcx>, |
| span: Span, |
| fn_abi_request: FnAbiRequest<'tcx>, |
| ) -> ! { |
| self.cx.handle_fn_abi_err(err, span, fn_abi_request) |
| } |
| } |
| |
| impl<'ll, 'tcx> Deref for Builder<'_, 'll, 'tcx> { |
| type Target = CodegenCx<'ll, 'tcx>; |
| |
| #[inline] |
| fn deref(&self) -> &Self::Target { |
| self.cx |
| } |
| } |
| |
| impl<'ll, 'tcx> HasCodegen<'tcx> for Builder<'_, 'll, 'tcx> { |
| type CodegenCx = CodegenCx<'ll, 'tcx>; |
| } |
| |
| macro_rules! builder_methods_for_value_instructions { |
| ($($name:ident($($arg:ident),*) => $llvm_capi:ident),+ $(,)?) => { |
| $(fn $name(&mut self, $($arg: &'ll Value),*) -> &'ll Value { |
| unsafe { |
| llvm::$llvm_capi(self.llbuilder, $($arg,)* UNNAMED) |
| } |
| })+ |
| } |
| } |
| |
| impl<'a, 'll, 'tcx> BuilderMethods<'a, 'tcx> for Builder<'a, 'll, 'tcx> { |
| fn build(cx: &'a CodegenCx<'ll, 'tcx>, llbb: &'ll BasicBlock) -> Self { |
| let bx = Builder::with_cx(cx); |
| unsafe { |
| llvm::LLVMPositionBuilderAtEnd(bx.llbuilder, llbb); |
| } |
| bx |
| } |
| |
| fn cx(&self) -> &CodegenCx<'ll, 'tcx> { |
| self.cx |
| } |
| |
| fn llbb(&self) -> &'ll BasicBlock { |
| unsafe { llvm::LLVMGetInsertBlock(self.llbuilder) } |
| } |
| |
| fn set_span(&mut self, _span: Span) {} |
| |
| fn append_block(cx: &'a CodegenCx<'ll, 'tcx>, llfn: &'ll Value, name: &str) -> &'ll BasicBlock { |
| unsafe { |
| let name = SmallCStr::new(name); |
| llvm::LLVMAppendBasicBlockInContext(cx.llcx, llfn, name.as_ptr()) |
| } |
| } |
| |
| fn append_sibling_block(&mut self, name: &str) -> &'ll BasicBlock { |
| Self::append_block(self.cx, self.llfn(), name) |
| } |
| |
| fn switch_to_block(&mut self, llbb: Self::BasicBlock) { |
| *self = Self::build(self.cx, llbb) |
| } |
| |
| fn ret_void(&mut self) { |
| unsafe { |
| llvm::LLVMBuildRetVoid(self.llbuilder); |
| } |
| } |
| |
| fn ret(&mut self, v: &'ll Value) { |
| unsafe { |
| llvm::LLVMBuildRet(self.llbuilder, v); |
| } |
| } |
| |
| fn br(&mut self, dest: &'ll BasicBlock) { |
| unsafe { |
| llvm::LLVMBuildBr(self.llbuilder, dest); |
| } |
| } |
| |
| fn cond_br( |
| &mut self, |
| cond: &'ll Value, |
| then_llbb: &'ll BasicBlock, |
| else_llbb: &'ll BasicBlock, |
| ) { |
| unsafe { |
| llvm::LLVMBuildCondBr(self.llbuilder, cond, then_llbb, else_llbb); |
| } |
| } |
| |
| fn switch( |
| &mut self, |
| v: &'ll Value, |
| else_llbb: &'ll BasicBlock, |
| cases: impl ExactSizeIterator<Item = (u128, &'ll BasicBlock)>, |
| ) { |
| let switch = |
| unsafe { llvm::LLVMBuildSwitch(self.llbuilder, v, else_llbb, cases.len() as c_uint) }; |
| for (on_val, dest) in cases { |
| let on_val = self.const_uint_big(self.val_ty(v), on_val); |
| unsafe { llvm::LLVMAddCase(switch, on_val, dest) } |
| } |
| } |
| |
| fn invoke( |
| &mut self, |
| llty: &'ll Type, |
| fn_attrs: Option<&CodegenFnAttrs>, |
| fn_abi: Option<&FnAbi<'tcx, Ty<'tcx>>>, |
| llfn: &'ll Value, |
| args: &[&'ll Value], |
| then: &'ll BasicBlock, |
| catch: &'ll BasicBlock, |
| funclet: Option<&Funclet<'ll>>, |
| instance: Option<Instance<'tcx>>, |
| ) -> &'ll Value { |
| debug!("invoke {:?} with args ({:?})", llfn, args); |
| |
| let args = self.check_call("invoke", llty, llfn, args); |
| let funclet_bundle = funclet.map(|funclet| funclet.bundle()); |
| let funclet_bundle = funclet_bundle.as_ref().map(|b| &*b.raw); |
| let mut bundles: SmallVec<[_; 2]> = SmallVec::new(); |
| if let Some(funclet_bundle) = funclet_bundle { |
| bundles.push(funclet_bundle); |
| } |
| |
| // Emit CFI pointer type membership test |
| self.cfi_type_test(fn_attrs, fn_abi, instance, llfn); |
| |
| // Emit KCFI operand bundle |
| let kcfi_bundle = self.kcfi_operand_bundle(fn_attrs, fn_abi, instance, llfn); |
| let kcfi_bundle = kcfi_bundle.as_ref().map(|b| &*b.raw); |
| if let Some(kcfi_bundle) = kcfi_bundle { |
| bundles.push(kcfi_bundle); |
| } |
| |
| let invoke = unsafe { |
| llvm::LLVMRustBuildInvoke( |
| self.llbuilder, |
| llty, |
| llfn, |
| args.as_ptr(), |
| args.len() as c_uint, |
| then, |
| catch, |
| bundles.as_ptr(), |
| bundles.len() as c_uint, |
| UNNAMED, |
| ) |
| }; |
| if let Some(fn_abi) = fn_abi { |
| fn_abi.apply_attrs_callsite(self, invoke); |
| } |
| invoke |
| } |
| |
| fn unreachable(&mut self) { |
| unsafe { |
| llvm::LLVMBuildUnreachable(self.llbuilder); |
| } |
| } |
| |
| builder_methods_for_value_instructions! { |
| add(a, b) => LLVMBuildAdd, |
| fadd(a, b) => LLVMBuildFAdd, |
| sub(a, b) => LLVMBuildSub, |
| fsub(a, b) => LLVMBuildFSub, |
| mul(a, b) => LLVMBuildMul, |
| fmul(a, b) => LLVMBuildFMul, |
| udiv(a, b) => LLVMBuildUDiv, |
| exactudiv(a, b) => LLVMBuildExactUDiv, |
| sdiv(a, b) => LLVMBuildSDiv, |
| exactsdiv(a, b) => LLVMBuildExactSDiv, |
| fdiv(a, b) => LLVMBuildFDiv, |
| urem(a, b) => LLVMBuildURem, |
| srem(a, b) => LLVMBuildSRem, |
| frem(a, b) => LLVMBuildFRem, |
| shl(a, b) => LLVMBuildShl, |
| lshr(a, b) => LLVMBuildLShr, |
| ashr(a, b) => LLVMBuildAShr, |
| and(a, b) => LLVMBuildAnd, |
| or(a, b) => LLVMBuildOr, |
| xor(a, b) => LLVMBuildXor, |
| neg(x) => LLVMBuildNeg, |
| fneg(x) => LLVMBuildFNeg, |
| not(x) => LLVMBuildNot, |
| unchecked_sadd(x, y) => LLVMBuildNSWAdd, |
| unchecked_uadd(x, y) => LLVMBuildNUWAdd, |
| unchecked_ssub(x, y) => LLVMBuildNSWSub, |
| unchecked_usub(x, y) => LLVMBuildNUWSub, |
| unchecked_smul(x, y) => LLVMBuildNSWMul, |
| unchecked_umul(x, y) => LLVMBuildNUWMul, |
| } |
| |
| fn fadd_fast(&mut self, lhs: &'ll Value, rhs: &'ll Value) -> &'ll Value { |
| unsafe { |
| let instr = llvm::LLVMBuildFAdd(self.llbuilder, lhs, rhs, UNNAMED); |
| llvm::LLVMRustSetFastMath(instr); |
| instr |
| } |
| } |
| |
| fn fsub_fast(&mut self, lhs: &'ll Value, rhs: &'ll Value) -> &'ll Value { |
| unsafe { |
| let instr = llvm::LLVMBuildFSub(self.llbuilder, lhs, rhs, UNNAMED); |
| llvm::LLVMRustSetFastMath(instr); |
| instr |
| } |
| } |
| |
| fn fmul_fast(&mut self, lhs: &'ll Value, rhs: &'ll Value) -> &'ll Value { |
| unsafe { |
| let instr = llvm::LLVMBuildFMul(self.llbuilder, lhs, rhs, UNNAMED); |
| llvm::LLVMRustSetFastMath(instr); |
| instr |
| } |
| } |
| |
| fn fdiv_fast(&mut self, lhs: &'ll Value, rhs: &'ll Value) -> &'ll Value { |
| unsafe { |
| let instr = llvm::LLVMBuildFDiv(self.llbuilder, lhs, rhs, UNNAMED); |
| llvm::LLVMRustSetFastMath(instr); |
| instr |
| } |
| } |
| |
| fn frem_fast(&mut self, lhs: &'ll Value, rhs: &'ll Value) -> &'ll Value { |
| unsafe { |
| let instr = llvm::LLVMBuildFRem(self.llbuilder, lhs, rhs, UNNAMED); |
| llvm::LLVMRustSetFastMath(instr); |
| instr |
| } |
| } |
| |
| fn fadd_algebraic(&mut self, lhs: &'ll Value, rhs: &'ll Value) -> &'ll Value { |
| unsafe { |
| let instr = llvm::LLVMBuildFAdd(self.llbuilder, lhs, rhs, UNNAMED); |
| llvm::LLVMRustSetAlgebraicMath(instr); |
| instr |
| } |
| } |
| |
| fn fsub_algebraic(&mut self, lhs: &'ll Value, rhs: &'ll Value) -> &'ll Value { |
| unsafe { |
| let instr = llvm::LLVMBuildFSub(self.llbuilder, lhs, rhs, UNNAMED); |
| llvm::LLVMRustSetAlgebraicMath(instr); |
| instr |
| } |
| } |
| |
| fn fmul_algebraic(&mut self, lhs: &'ll Value, rhs: &'ll Value) -> &'ll Value { |
| unsafe { |
| let instr = llvm::LLVMBuildFMul(self.llbuilder, lhs, rhs, UNNAMED); |
| llvm::LLVMRustSetAlgebraicMath(instr); |
| instr |
| } |
| } |
| |
| fn fdiv_algebraic(&mut self, lhs: &'ll Value, rhs: &'ll Value) -> &'ll Value { |
| unsafe { |
| let instr = llvm::LLVMBuildFDiv(self.llbuilder, lhs, rhs, UNNAMED); |
| llvm::LLVMRustSetAlgebraicMath(instr); |
| instr |
| } |
| } |
| |
| fn frem_algebraic(&mut self, lhs: &'ll Value, rhs: &'ll Value) -> &'ll Value { |
| unsafe { |
| let instr = llvm::LLVMBuildFRem(self.llbuilder, lhs, rhs, UNNAMED); |
| llvm::LLVMRustSetAlgebraicMath(instr); |
| instr |
| } |
| } |
| |
| fn checked_binop( |
| &mut self, |
| oop: OverflowOp, |
| ty: Ty<'_>, |
| lhs: Self::Value, |
| rhs: Self::Value, |
| ) -> (Self::Value, Self::Value) { |
| use rustc_middle::ty::{Int, Uint}; |
| use rustc_middle::ty::{IntTy::*, UintTy::*}; |
| |
| let new_kind = match ty.kind() { |
| Int(t @ Isize) => Int(t.normalize(self.tcx.sess.target.pointer_width)), |
| Uint(t @ Usize) => Uint(t.normalize(self.tcx.sess.target.pointer_width)), |
| t @ (Uint(_) | Int(_)) => *t, |
| _ => panic!("tried to get overflow intrinsic for op applied to non-int type"), |
| }; |
| |
| let name = match oop { |
| OverflowOp::Add => match new_kind { |
| Int(I8) => "llvm.sadd.with.overflow.i8", |
| Int(I16) => "llvm.sadd.with.overflow.i16", |
| Int(I32) => "llvm.sadd.with.overflow.i32", |
| Int(I64) => "llvm.sadd.with.overflow.i64", |
| Int(I128) => "llvm.sadd.with.overflow.i128", |
| |
| Uint(U8) => "llvm.uadd.with.overflow.i8", |
| Uint(U16) => "llvm.uadd.with.overflow.i16", |
| Uint(U32) => "llvm.uadd.with.overflow.i32", |
| Uint(U64) => "llvm.uadd.with.overflow.i64", |
| Uint(U128) => "llvm.uadd.with.overflow.i128", |
| |
| _ => unreachable!(), |
| }, |
| OverflowOp::Sub => match new_kind { |
| Int(I8) => "llvm.ssub.with.overflow.i8", |
| Int(I16) => "llvm.ssub.with.overflow.i16", |
| Int(I32) => "llvm.ssub.with.overflow.i32", |
| Int(I64) => "llvm.ssub.with.overflow.i64", |
| Int(I128) => "llvm.ssub.with.overflow.i128", |
| |
| Uint(_) => { |
| // Emit sub and icmp instead of llvm.usub.with.overflow. LLVM considers these |
| // to be the canonical form. It will attempt to reform llvm.usub.with.overflow |
| // in the backend if profitable. |
| let sub = self.sub(lhs, rhs); |
| let cmp = self.icmp(IntPredicate::IntULT, lhs, rhs); |
| return (sub, cmp); |
| } |
| |
| _ => unreachable!(), |
| }, |
| OverflowOp::Mul => match new_kind { |
| Int(I8) => "llvm.smul.with.overflow.i8", |
| Int(I16) => "llvm.smul.with.overflow.i16", |
| Int(I32) => "llvm.smul.with.overflow.i32", |
| Int(I64) => "llvm.smul.with.overflow.i64", |
| Int(I128) => "llvm.smul.with.overflow.i128", |
| |
| Uint(U8) => "llvm.umul.with.overflow.i8", |
| Uint(U16) => "llvm.umul.with.overflow.i16", |
| Uint(U32) => "llvm.umul.with.overflow.i32", |
| Uint(U64) => "llvm.umul.with.overflow.i64", |
| Uint(U128) => "llvm.umul.with.overflow.i128", |
| |
| _ => unreachable!(), |
| }, |
| }; |
| |
| let res = self.call_intrinsic(name, &[lhs, rhs]); |
| (self.extract_value(res, 0), self.extract_value(res, 1)) |
| } |
| |
| fn from_immediate(&mut self, val: Self::Value) -> Self::Value { |
| if self.cx().val_ty(val) == self.cx().type_i1() { |
| self.zext(val, self.cx().type_i8()) |
| } else { |
| val |
| } |
| } |
| fn to_immediate_scalar(&mut self, val: Self::Value, scalar: abi::Scalar) -> Self::Value { |
| if scalar.is_bool() { |
| return self.trunc(val, self.cx().type_i1()); |
| } |
| val |
| } |
| |
| fn alloca(&mut self, size: Size, align: Align) -> &'ll Value { |
| let mut bx = Builder::with_cx(self.cx); |
| bx.position_at_start(unsafe { llvm::LLVMGetFirstBasicBlock(self.llfn()) }); |
| let ty = self.cx().type_array(self.cx().type_i8(), size.bytes()); |
| unsafe { |
| let alloca = llvm::LLVMBuildAlloca(bx.llbuilder, ty, UNNAMED); |
| llvm::LLVMSetAlignment(alloca, align.bytes() as c_uint); |
| alloca |
| } |
| } |
| |
| fn dynamic_alloca(&mut self, size: &'ll Value, align: Align) -> &'ll Value { |
| unsafe { |
| let alloca = |
| llvm::LLVMBuildArrayAlloca(self.llbuilder, self.cx().type_i8(), size, UNNAMED); |
| llvm::LLVMSetAlignment(alloca, align.bytes() as c_uint); |
| alloca |
| } |
| } |
| |
| fn load(&mut self, ty: &'ll Type, ptr: &'ll Value, align: Align) -> &'ll Value { |
| unsafe { |
| let load = llvm::LLVMBuildLoad2(self.llbuilder, ty, ptr, UNNAMED); |
| llvm::LLVMSetAlignment(load, align.bytes() as c_uint); |
| load |
| } |
| } |
| |
| fn volatile_load(&mut self, ty: &'ll Type, ptr: &'ll Value) -> &'ll Value { |
| unsafe { |
| let load = llvm::LLVMBuildLoad2(self.llbuilder, ty, ptr, UNNAMED); |
| llvm::LLVMSetVolatile(load, llvm::True); |
| load |
| } |
| } |
| |
| fn atomic_load( |
| &mut self, |
| ty: &'ll Type, |
| ptr: &'ll Value, |
| order: rustc_codegen_ssa::common::AtomicOrdering, |
| size: Size, |
| ) -> &'ll Value { |
| unsafe { |
| let load = llvm::LLVMRustBuildAtomicLoad( |
| self.llbuilder, |
| ty, |
| ptr, |
| UNNAMED, |
| AtomicOrdering::from_generic(order), |
| ); |
| // LLVM requires the alignment of atomic loads to be at least the size of the type. |
| llvm::LLVMSetAlignment(load, size.bytes() as c_uint); |
| load |
| } |
| } |
| |
| #[instrument(level = "trace", skip(self))] |
| fn load_operand(&mut self, place: PlaceRef<'tcx, &'ll Value>) -> OperandRef<'tcx, &'ll Value> { |
| if place.layout.is_unsized() { |
| let tail = self.tcx.struct_tail_with_normalize(place.layout.ty, |ty| ty, || {}); |
| if matches!(tail.kind(), ty::Foreign(..)) { |
| // Unsized locals and, at least conceptually, even unsized arguments must be copied |
| // around, which requires dynamically determining their size. Therefore, we cannot |
| // allow `extern` types here. Consult t-opsem before removing this check. |
| panic!("unsized locals must not be `extern` types"); |
| } |
| } |
| assert_eq!(place.val.llextra.is_some(), place.layout.is_unsized()); |
| |
| if place.layout.is_zst() { |
| return OperandRef::zero_sized(place.layout); |
| } |
| |
| #[instrument(level = "trace", skip(bx))] |
| fn scalar_load_metadata<'a, 'll, 'tcx>( |
| bx: &mut Builder<'a, 'll, 'tcx>, |
| load: &'ll Value, |
| scalar: abi::Scalar, |
| layout: TyAndLayout<'tcx>, |
| offset: Size, |
| ) { |
| if bx.cx.sess().opts.optimize == OptLevel::No { |
| // Don't emit metadata we're not going to use |
| return; |
| } |
| |
| if !scalar.is_uninit_valid() { |
| bx.noundef_metadata(load); |
| } |
| |
| match scalar.primitive() { |
| abi::Int(..) => { |
| if !scalar.is_always_valid(bx) { |
| bx.range_metadata(load, scalar.valid_range(bx)); |
| } |
| } |
| abi::Pointer(_) => { |
| if !scalar.valid_range(bx).contains(0) { |
| bx.nonnull_metadata(load); |
| } |
| |
| if let Some(pointee) = layout.pointee_info_at(bx, offset) { |
| if let Some(_) = pointee.safe { |
| bx.align_metadata(load, pointee.align); |
| } |
| } |
| } |
| abi::F16 | abi::F32 | abi::F64 | abi::F128 => {} |
| } |
| } |
| |
| let val = if let Some(_) = place.val.llextra { |
| // FIXME: Merge with the `else` below? |
| OperandValue::Ref(place.val) |
| } else if place.layout.is_llvm_immediate() { |
| let mut const_llval = None; |
| let llty = place.layout.llvm_type(self); |
| unsafe { |
| if let Some(global) = llvm::LLVMIsAGlobalVariable(place.val.llval) { |
| if llvm::LLVMIsGlobalConstant(global) == llvm::True { |
| if let Some(init) = llvm::LLVMGetInitializer(global) { |
| if self.val_ty(init) == llty { |
| const_llval = Some(init); |
| } |
| } |
| } |
| } |
| } |
| let llval = const_llval.unwrap_or_else(|| { |
| let load = self.load(llty, place.val.llval, place.val.align); |
| if let abi::Abi::Scalar(scalar) = place.layout.abi { |
| scalar_load_metadata(self, load, scalar, place.layout, Size::ZERO); |
| } |
| load |
| }); |
| OperandValue::Immediate(self.to_immediate(llval, place.layout)) |
| } else if let abi::Abi::ScalarPair(a, b) = place.layout.abi { |
| let b_offset = a.size(self).align_to(b.align(self).abi); |
| |
| let mut load = |i, scalar: abi::Scalar, layout, align, offset| { |
| let llptr = if i == 0 { |
| place.val.llval |
| } else { |
| self.inbounds_ptradd(place.val.llval, self.const_usize(b_offset.bytes())) |
| }; |
| let llty = place.layout.scalar_pair_element_llvm_type(self, i, false); |
| let load = self.load(llty, llptr, align); |
| scalar_load_metadata(self, load, scalar, layout, offset); |
| self.to_immediate_scalar(load, scalar) |
| }; |
| |
| OperandValue::Pair( |
| load(0, a, place.layout, place.val.align, Size::ZERO), |
| load(1, b, place.layout, place.val.align.restrict_for_offset(b_offset), b_offset), |
| ) |
| } else { |
| OperandValue::Ref(place.val) |
| }; |
| |
| OperandRef { val, layout: place.layout } |
| } |
| |
| fn write_operand_repeatedly( |
| &mut self, |
| cg_elem: OperandRef<'tcx, &'ll Value>, |
| count: u64, |
| dest: PlaceRef<'tcx, &'ll Value>, |
| ) { |
| let zero = self.const_usize(0); |
| let count = self.const_usize(count); |
| |
| let header_bb = self.append_sibling_block("repeat_loop_header"); |
| let body_bb = self.append_sibling_block("repeat_loop_body"); |
| let next_bb = self.append_sibling_block("repeat_loop_next"); |
| |
| self.br(header_bb); |
| |
| let mut header_bx = Self::build(self.cx, header_bb); |
| let i = header_bx.phi(self.val_ty(zero), &[zero], &[self.llbb()]); |
| |
| let keep_going = header_bx.icmp(IntPredicate::IntULT, i, count); |
| header_bx.cond_br(keep_going, body_bb, next_bb); |
| |
| let mut body_bx = Self::build(self.cx, body_bb); |
| let dest_elem = dest.project_index(&mut body_bx, i); |
| cg_elem.val.store(&mut body_bx, dest_elem); |
| |
| let next = body_bx.unchecked_uadd(i, self.const_usize(1)); |
| body_bx.br(header_bb); |
| header_bx.add_incoming_to_phi(i, next, body_bb); |
| |
| *self = Self::build(self.cx, next_bb); |
| } |
| |
| fn range_metadata(&mut self, load: &'ll Value, range: WrappingRange) { |
| if self.sess().target.arch == "amdgpu" { |
| // amdgpu/LLVM does something weird and thinks an i64 value is |
| // split into a v2i32, halving the bitwidth LLVM expects, |
| // tripping an assertion. So, for now, just disable this |
| // optimization. |
| return; |
| } |
| |
| if self.cx.sess().opts.optimize == OptLevel::No { |
| // Don't emit metadata we're not going to use |
| return; |
| } |
| |
| unsafe { |
| let llty = self.cx.val_ty(load); |
| let v = [ |
| self.cx.const_uint_big(llty, range.start), |
| self.cx.const_uint_big(llty, range.end.wrapping_add(1)), |
| ]; |
| |
| llvm::LLVMSetMetadata( |
| load, |
| llvm::MD_range as c_uint, |
| llvm::LLVMMDNodeInContext(self.cx.llcx, v.as_ptr(), v.len() as c_uint), |
| ); |
| } |
| } |
| |
| fn nonnull_metadata(&mut self, load: &'ll Value) { |
| unsafe { |
| llvm::LLVMSetMetadata( |
| load, |
| llvm::MD_nonnull as c_uint, |
| llvm::LLVMMDNodeInContext(self.cx.llcx, ptr::null(), 0), |
| ); |
| } |
| } |
| |
| fn store(&mut self, val: &'ll Value, ptr: &'ll Value, align: Align) -> &'ll Value { |
| self.store_with_flags(val, ptr, align, MemFlags::empty()) |
| } |
| |
| fn store_with_flags( |
| &mut self, |
| val: &'ll Value, |
| ptr: &'ll Value, |
| align: Align, |
| flags: MemFlags, |
| ) -> &'ll Value { |
| debug!("Store {:?} -> {:?} ({:?})", val, ptr, flags); |
| assert_eq!(self.cx.type_kind(self.cx.val_ty(ptr)), TypeKind::Pointer); |
| unsafe { |
| let store = llvm::LLVMBuildStore(self.llbuilder, val, ptr); |
| let align = |
| if flags.contains(MemFlags::UNALIGNED) { 1 } else { align.bytes() as c_uint }; |
| llvm::LLVMSetAlignment(store, align); |
| if flags.contains(MemFlags::VOLATILE) { |
| llvm::LLVMSetVolatile(store, llvm::True); |
| } |
| if flags.contains(MemFlags::NONTEMPORAL) { |
| // According to LLVM [1] building a nontemporal store must |
| // *always* point to a metadata value of the integer 1. |
| // |
| // [1]: https://llvm.org/docs/LangRef.html#store-instruction |
| let one = self.cx.const_i32(1); |
| let node = llvm::LLVMMDNodeInContext(self.cx.llcx, &one, 1); |
| llvm::LLVMSetMetadata(store, llvm::MD_nontemporal as c_uint, node); |
| } |
| store |
| } |
| } |
| |
| fn atomic_store( |
| &mut self, |
| val: &'ll Value, |
| ptr: &'ll Value, |
| order: rustc_codegen_ssa::common::AtomicOrdering, |
| size: Size, |
| ) { |
| debug!("Store {:?} -> {:?}", val, ptr); |
| assert_eq!(self.cx.type_kind(self.cx.val_ty(ptr)), TypeKind::Pointer); |
| unsafe { |
| let store = llvm::LLVMRustBuildAtomicStore( |
| self.llbuilder, |
| val, |
| ptr, |
| AtomicOrdering::from_generic(order), |
| ); |
| // LLVM requires the alignment of atomic stores to be at least the size of the type. |
| llvm::LLVMSetAlignment(store, size.bytes() as c_uint); |
| } |
| } |
| |
| fn gep(&mut self, ty: &'ll Type, ptr: &'ll Value, indices: &[&'ll Value]) -> &'ll Value { |
| unsafe { |
| llvm::LLVMBuildGEP2( |
| self.llbuilder, |
| ty, |
| ptr, |
| indices.as_ptr(), |
| indices.len() as c_uint, |
| UNNAMED, |
| ) |
| } |
| } |
| |
| fn inbounds_gep( |
| &mut self, |
| ty: &'ll Type, |
| ptr: &'ll Value, |
| indices: &[&'ll Value], |
| ) -> &'ll Value { |
| unsafe { |
| llvm::LLVMBuildInBoundsGEP2( |
| self.llbuilder, |
| ty, |
| ptr, |
| indices.as_ptr(), |
| indices.len() as c_uint, |
| UNNAMED, |
| ) |
| } |
| } |
| |
| /* Casts */ |
| fn trunc(&mut self, val: &'ll Value, dest_ty: &'ll Type) -> &'ll Value { |
| unsafe { llvm::LLVMBuildTrunc(self.llbuilder, val, dest_ty, UNNAMED) } |
| } |
| |
| fn sext(&mut self, val: &'ll Value, dest_ty: &'ll Type) -> &'ll Value { |
| unsafe { llvm::LLVMBuildSExt(self.llbuilder, val, dest_ty, UNNAMED) } |
| } |
| |
| fn fptoui_sat(&mut self, val: &'ll Value, dest_ty: &'ll Type) -> &'ll Value { |
| self.fptoint_sat(false, val, dest_ty) |
| } |
| |
| fn fptosi_sat(&mut self, val: &'ll Value, dest_ty: &'ll Type) -> &'ll Value { |
| self.fptoint_sat(true, val, dest_ty) |
| } |
| |
| fn fptoui(&mut self, val: &'ll Value, dest_ty: &'ll Type) -> &'ll Value { |
| // On WebAssembly the `fptoui` and `fptosi` instructions currently have |
| // poor codegen. The reason for this is that the corresponding wasm |
| // instructions, `i32.trunc_f32_s` for example, will trap when the float |
| // is out-of-bounds, infinity, or nan. This means that LLVM |
| // automatically inserts control flow around `fptoui` and `fptosi` |
| // because the LLVM instruction `fptoui` is defined as producing a |
| // poison value, not having UB on out-of-bounds values. |
| // |
| // This method, however, is only used with non-saturating casts that |
| // have UB on out-of-bounds values. This means that it's ok if we use |
| // the raw wasm instruction since out-of-bounds values can do whatever |
| // we like. To ensure that LLVM picks the right instruction we choose |
| // the raw wasm intrinsic functions which avoid LLVM inserting all the |
| // other control flow automatically. |
| if self.sess().target.is_like_wasm { |
| let src_ty = self.cx.val_ty(val); |
| if self.cx.type_kind(src_ty) != TypeKind::Vector { |
| let float_width = self.cx.float_width(src_ty); |
| let int_width = self.cx.int_width(dest_ty); |
| let name = match (int_width, float_width) { |
| (32, 32) => Some("llvm.wasm.trunc.unsigned.i32.f32"), |
| (32, 64) => Some("llvm.wasm.trunc.unsigned.i32.f64"), |
| (64, 32) => Some("llvm.wasm.trunc.unsigned.i64.f32"), |
| (64, 64) => Some("llvm.wasm.trunc.unsigned.i64.f64"), |
| _ => None, |
| }; |
| if let Some(name) = name { |
| return self.call_intrinsic(name, &[val]); |
| } |
| } |
| } |
| unsafe { llvm::LLVMBuildFPToUI(self.llbuilder, val, dest_ty, UNNAMED) } |
| } |
| |
| fn fptosi(&mut self, val: &'ll Value, dest_ty: &'ll Type) -> &'ll Value { |
| // see `fptoui` above for why wasm is different here |
| if self.sess().target.is_like_wasm { |
| let src_ty = self.cx.val_ty(val); |
| if self.cx.type_kind(src_ty) != TypeKind::Vector { |
| let float_width = self.cx.float_width(src_ty); |
| let int_width = self.cx.int_width(dest_ty); |
| let name = match (int_width, float_width) { |
| (32, 32) => Some("llvm.wasm.trunc.signed.i32.f32"), |
| (32, 64) => Some("llvm.wasm.trunc.signed.i32.f64"), |
| (64, 32) => Some("llvm.wasm.trunc.signed.i64.f32"), |
| (64, 64) => Some("llvm.wasm.trunc.signed.i64.f64"), |
| _ => None, |
| }; |
| if let Some(name) = name { |
| return self.call_intrinsic(name, &[val]); |
| } |
| } |
| } |
| unsafe { llvm::LLVMBuildFPToSI(self.llbuilder, val, dest_ty, UNNAMED) } |
| } |
| |
| fn uitofp(&mut self, val: &'ll Value, dest_ty: &'ll Type) -> &'ll Value { |
| unsafe { llvm::LLVMBuildUIToFP(self.llbuilder, val, dest_ty, UNNAMED) } |
| } |
| |
| fn sitofp(&mut self, val: &'ll Value, dest_ty: &'ll Type) -> &'ll Value { |
| unsafe { llvm::LLVMBuildSIToFP(self.llbuilder, val, dest_ty, UNNAMED) } |
| } |
| |
| fn fptrunc(&mut self, val: &'ll Value, dest_ty: &'ll Type) -> &'ll Value { |
| unsafe { llvm::LLVMBuildFPTrunc(self.llbuilder, val, dest_ty, UNNAMED) } |
| } |
| |
| fn fpext(&mut self, val: &'ll Value, dest_ty: &'ll Type) -> &'ll Value { |
| unsafe { llvm::LLVMBuildFPExt(self.llbuilder, val, dest_ty, UNNAMED) } |
| } |
| |
| fn ptrtoint(&mut self, val: &'ll Value, dest_ty: &'ll Type) -> &'ll Value { |
| unsafe { llvm::LLVMBuildPtrToInt(self.llbuilder, val, dest_ty, UNNAMED) } |
| } |
| |
| fn inttoptr(&mut self, val: &'ll Value, dest_ty: &'ll Type) -> &'ll Value { |
| unsafe { llvm::LLVMBuildIntToPtr(self.llbuilder, val, dest_ty, UNNAMED) } |
| } |
| |
| fn bitcast(&mut self, val: &'ll Value, dest_ty: &'ll Type) -> &'ll Value { |
| unsafe { llvm::LLVMBuildBitCast(self.llbuilder, val, dest_ty, UNNAMED) } |
| } |
| |
| fn intcast(&mut self, val: &'ll Value, dest_ty: &'ll Type, is_signed: bool) -> &'ll Value { |
| unsafe { |
| llvm::LLVMBuildIntCast2( |
| self.llbuilder, |
| val, |
| dest_ty, |
| if is_signed { True } else { False }, |
| UNNAMED, |
| ) |
| } |
| } |
| |
| fn pointercast(&mut self, val: &'ll Value, dest_ty: &'ll Type) -> &'ll Value { |
| unsafe { llvm::LLVMBuildPointerCast(self.llbuilder, val, dest_ty, UNNAMED) } |
| } |
| |
| /* Comparisons */ |
| fn icmp(&mut self, op: IntPredicate, lhs: &'ll Value, rhs: &'ll Value) -> &'ll Value { |
| let op = llvm::IntPredicate::from_generic(op); |
| unsafe { llvm::LLVMBuildICmp(self.llbuilder, op as c_uint, lhs, rhs, UNNAMED) } |
| } |
| |
| fn fcmp(&mut self, op: RealPredicate, lhs: &'ll Value, rhs: &'ll Value) -> &'ll Value { |
| let op = llvm::RealPredicate::from_generic(op); |
| unsafe { llvm::LLVMBuildFCmp(self.llbuilder, op as c_uint, lhs, rhs, UNNAMED) } |
| } |
| |
| /* Miscellaneous instructions */ |
| fn memcpy( |
| &mut self, |
| dst: &'ll Value, |
| dst_align: Align, |
| src: &'ll Value, |
| src_align: Align, |
| size: &'ll Value, |
| flags: MemFlags, |
| ) { |
| assert!(!flags.contains(MemFlags::NONTEMPORAL), "non-temporal memcpy not supported"); |
| let size = self.intcast(size, self.type_isize(), false); |
| let is_volatile = flags.contains(MemFlags::VOLATILE); |
| unsafe { |
| llvm::LLVMRustBuildMemCpy( |
| self.llbuilder, |
| dst, |
| dst_align.bytes() as c_uint, |
| src, |
| src_align.bytes() as c_uint, |
| size, |
| is_volatile, |
| ); |
| } |
| } |
| |
| fn memmove( |
| &mut self, |
| dst: &'ll Value, |
| dst_align: Align, |
| src: &'ll Value, |
| src_align: Align, |
| size: &'ll Value, |
| flags: MemFlags, |
| ) { |
| assert!(!flags.contains(MemFlags::NONTEMPORAL), "non-temporal memmove not supported"); |
| let size = self.intcast(size, self.type_isize(), false); |
| let is_volatile = flags.contains(MemFlags::VOLATILE); |
| unsafe { |
| llvm::LLVMRustBuildMemMove( |
| self.llbuilder, |
| dst, |
| dst_align.bytes() as c_uint, |
| src, |
| src_align.bytes() as c_uint, |
| size, |
| is_volatile, |
| ); |
| } |
| } |
| |
| fn memset( |
| &mut self, |
| ptr: &'ll Value, |
| fill_byte: &'ll Value, |
| size: &'ll Value, |
| align: Align, |
| flags: MemFlags, |
| ) { |
| let is_volatile = flags.contains(MemFlags::VOLATILE); |
| unsafe { |
| llvm::LLVMRustBuildMemSet( |
| self.llbuilder, |
| ptr, |
| align.bytes() as c_uint, |
| fill_byte, |
| size, |
| is_volatile, |
| ); |
| } |
| } |
| |
| fn select( |
| &mut self, |
| cond: &'ll Value, |
| then_val: &'ll Value, |
| else_val: &'ll Value, |
| ) -> &'ll Value { |
| unsafe { llvm::LLVMBuildSelect(self.llbuilder, cond, then_val, else_val, UNNAMED) } |
| } |
| |
| fn va_arg(&mut self, list: &'ll Value, ty: &'ll Type) -> &'ll Value { |
| unsafe { llvm::LLVMBuildVAArg(self.llbuilder, list, ty, UNNAMED) } |
| } |
| |
| fn extract_element(&mut self, vec: &'ll Value, idx: &'ll Value) -> &'ll Value { |
| unsafe { llvm::LLVMBuildExtractElement(self.llbuilder, vec, idx, UNNAMED) } |
| } |
| |
| fn vector_splat(&mut self, num_elts: usize, elt: &'ll Value) -> &'ll Value { |
| unsafe { |
| let elt_ty = self.cx.val_ty(elt); |
| let undef = llvm::LLVMGetUndef(self.type_vector(elt_ty, num_elts as u64)); |
| let vec = self.insert_element(undef, elt, self.cx.const_i32(0)); |
| let vec_i32_ty = self.type_vector(self.type_i32(), num_elts as u64); |
| self.shuffle_vector(vec, undef, self.const_null(vec_i32_ty)) |
| } |
| } |
| |
| fn extract_value(&mut self, agg_val: &'ll Value, idx: u64) -> &'ll Value { |
| assert_eq!(idx as c_uint as u64, idx); |
| unsafe { llvm::LLVMBuildExtractValue(self.llbuilder, agg_val, idx as c_uint, UNNAMED) } |
| } |
| |
| fn insert_value(&mut self, agg_val: &'ll Value, elt: &'ll Value, idx: u64) -> &'ll Value { |
| assert_eq!(idx as c_uint as u64, idx); |
| unsafe { llvm::LLVMBuildInsertValue(self.llbuilder, agg_val, elt, idx as c_uint, UNNAMED) } |
| } |
| |
| fn set_personality_fn(&mut self, personality: &'ll Value) { |
| unsafe { |
| llvm::LLVMSetPersonalityFn(self.llfn(), personality); |
| } |
| } |
| |
| fn cleanup_landing_pad(&mut self, pers_fn: &'ll Value) -> (&'ll Value, &'ll Value) { |
| let ty = self.type_struct(&[self.type_ptr(), self.type_i32()], false); |
| let landing_pad = self.landing_pad(ty, pers_fn, 0); |
| unsafe { |
| llvm::LLVMSetCleanup(landing_pad, llvm::True); |
| } |
| (self.extract_value(landing_pad, 0), self.extract_value(landing_pad, 1)) |
| } |
| |
| fn filter_landing_pad(&mut self, pers_fn: &'ll Value) -> (&'ll Value, &'ll Value) { |
| let ty = self.type_struct(&[self.type_ptr(), self.type_i32()], false); |
| let landing_pad = self.landing_pad(ty, pers_fn, 1); |
| self.add_clause(landing_pad, self.const_array(self.type_ptr(), &[])); |
| (self.extract_value(landing_pad, 0), self.extract_value(landing_pad, 1)) |
| } |
| |
| fn resume(&mut self, exn0: &'ll Value, exn1: &'ll Value) { |
| let ty = self.type_struct(&[self.type_ptr(), self.type_i32()], false); |
| let mut exn = self.const_poison(ty); |
| exn = self.insert_value(exn, exn0, 0); |
| exn = self.insert_value(exn, exn1, 1); |
| unsafe { |
| llvm::LLVMBuildResume(self.llbuilder, exn); |
| } |
| } |
| |
| fn cleanup_pad(&mut self, parent: Option<&'ll Value>, args: &[&'ll Value]) -> Funclet<'ll> { |
| let ret = unsafe { |
| llvm::LLVMBuildCleanupPad( |
| self.llbuilder, |
| parent, |
| args.as_ptr(), |
| args.len() as c_uint, |
| c"cleanuppad".as_ptr(), |
| ) |
| }; |
| Funclet::new(ret.expect("LLVM does not have support for cleanuppad")) |
| } |
| |
| fn cleanup_ret(&mut self, funclet: &Funclet<'ll>, unwind: Option<&'ll BasicBlock>) { |
| unsafe { |
| llvm::LLVMBuildCleanupRet(self.llbuilder, funclet.cleanuppad(), unwind) |
| .expect("LLVM does not have support for cleanupret"); |
| } |
| } |
| |
| fn catch_pad(&mut self, parent: &'ll Value, args: &[&'ll Value]) -> Funclet<'ll> { |
| let ret = unsafe { |
| llvm::LLVMBuildCatchPad( |
| self.llbuilder, |
| parent, |
| args.as_ptr(), |
| args.len() as c_uint, |
| c"catchpad".as_ptr(), |
| ) |
| }; |
| Funclet::new(ret.expect("LLVM does not have support for catchpad")) |
| } |
| |
| fn catch_switch( |
| &mut self, |
| parent: Option<&'ll Value>, |
| unwind: Option<&'ll BasicBlock>, |
| handlers: &[&'ll BasicBlock], |
| ) -> &'ll Value { |
| let ret = unsafe { |
| llvm::LLVMBuildCatchSwitch( |
| self.llbuilder, |
| parent, |
| unwind, |
| handlers.len() as c_uint, |
| c"catchswitch".as_ptr(), |
| ) |
| }; |
| let ret = ret.expect("LLVM does not have support for catchswitch"); |
| for handler in handlers { |
| unsafe { |
| llvm::LLVMAddHandler(ret, handler); |
| } |
| } |
| ret |
| } |
| |
| // Atomic Operations |
| fn atomic_cmpxchg( |
| &mut self, |
| dst: &'ll Value, |
| cmp: &'ll Value, |
| src: &'ll Value, |
| order: rustc_codegen_ssa::common::AtomicOrdering, |
| failure_order: rustc_codegen_ssa::common::AtomicOrdering, |
| weak: bool, |
| ) -> (&'ll Value, &'ll Value) { |
| let weak = if weak { llvm::True } else { llvm::False }; |
| unsafe { |
| let value = llvm::LLVMBuildAtomicCmpXchg( |
| self.llbuilder, |
| dst, |
| cmp, |
| src, |
| AtomicOrdering::from_generic(order), |
| AtomicOrdering::from_generic(failure_order), |
| llvm::False, // SingleThreaded |
| ); |
| llvm::LLVMSetWeak(value, weak); |
| let val = self.extract_value(value, 0); |
| let success = self.extract_value(value, 1); |
| (val, success) |
| } |
| } |
| fn atomic_rmw( |
| &mut self, |
| op: rustc_codegen_ssa::common::AtomicRmwBinOp, |
| dst: &'ll Value, |
| mut src: &'ll Value, |
| order: rustc_codegen_ssa::common::AtomicOrdering, |
| ) -> &'ll Value { |
| // The only RMW operation that LLVM supports on pointers is compare-exchange. |
| let requires_cast_to_int = self.val_ty(src) == self.type_ptr() |
| && op != rustc_codegen_ssa::common::AtomicRmwBinOp::AtomicXchg; |
| if requires_cast_to_int { |
| src = self.ptrtoint(src, self.type_isize()); |
| } |
| let mut res = unsafe { |
| llvm::LLVMBuildAtomicRMW( |
| self.llbuilder, |
| AtomicRmwBinOp::from_generic(op), |
| dst, |
| src, |
| AtomicOrdering::from_generic(order), |
| llvm::False, // SingleThreaded |
| ) |
| }; |
| if requires_cast_to_int { |
| res = self.inttoptr(res, self.type_ptr()); |
| } |
| res |
| } |
| |
| fn atomic_fence( |
| &mut self, |
| order: rustc_codegen_ssa::common::AtomicOrdering, |
| scope: SynchronizationScope, |
| ) { |
| let single_threaded = match scope { |
| SynchronizationScope::SingleThread => llvm::True, |
| SynchronizationScope::CrossThread => llvm::False, |
| }; |
| unsafe { |
| llvm::LLVMBuildFence( |
| self.llbuilder, |
| AtomicOrdering::from_generic(order), |
| single_threaded, |
| UNNAMED, |
| ); |
| } |
| } |
| |
| fn set_invariant_load(&mut self, load: &'ll Value) { |
| unsafe { |
| llvm::LLVMSetMetadata( |
| load, |
| llvm::MD_invariant_load as c_uint, |
| llvm::LLVMMDNodeInContext(self.cx.llcx, ptr::null(), 0), |
| ); |
| } |
| } |
| |
| fn lifetime_start(&mut self, ptr: &'ll Value, size: Size) { |
| self.call_lifetime_intrinsic("llvm.lifetime.start.p0i8", ptr, size); |
| } |
| |
| fn lifetime_end(&mut self, ptr: &'ll Value, size: Size) { |
| self.call_lifetime_intrinsic("llvm.lifetime.end.p0i8", ptr, size); |
| } |
| |
| fn instrprof_increment( |
| &mut self, |
| fn_name: &'ll Value, |
| hash: &'ll Value, |
| num_counters: &'ll Value, |
| index: &'ll Value, |
| ) { |
| debug!( |
| "instrprof_increment() with args ({:?}, {:?}, {:?}, {:?})", |
| fn_name, hash, num_counters, index |
| ); |
| |
| let llfn = unsafe { llvm::LLVMRustGetInstrProfIncrementIntrinsic(self.cx().llmod) }; |
| let llty = self.cx.type_func( |
| &[self.cx.type_ptr(), self.cx.type_i64(), self.cx.type_i32(), self.cx.type_i32()], |
| self.cx.type_void(), |
| ); |
| let args = &[fn_name, hash, num_counters, index]; |
| let args = self.check_call("call", llty, llfn, args); |
| |
| unsafe { |
| let _ = llvm::LLVMRustBuildCall( |
| self.llbuilder, |
| llty, |
| llfn, |
| args.as_ptr() as *const &llvm::Value, |
| args.len() as c_uint, |
| [].as_ptr(), |
| 0 as c_uint, |
| ); |
| } |
| } |
| |
| fn call( |
| &mut self, |
| llty: &'ll Type, |
| fn_attrs: Option<&CodegenFnAttrs>, |
| fn_abi: Option<&FnAbi<'tcx, Ty<'tcx>>>, |
| llfn: &'ll Value, |
| args: &[&'ll Value], |
| funclet: Option<&Funclet<'ll>>, |
| instance: Option<Instance<'tcx>>, |
| ) -> &'ll Value { |
| debug!("call {:?} with args ({:?})", llfn, args); |
| |
| let args = self.check_call("call", llty, llfn, args); |
| let funclet_bundle = funclet.map(|funclet| funclet.bundle()); |
| let funclet_bundle = funclet_bundle.as_ref().map(|b| &*b.raw); |
| let mut bundles: SmallVec<[_; 2]> = SmallVec::new(); |
| if let Some(funclet_bundle) = funclet_bundle { |
| bundles.push(funclet_bundle); |
| } |
| |
| // Emit CFI pointer type membership test |
| self.cfi_type_test(fn_attrs, fn_abi, instance, llfn); |
| |
| // Emit KCFI operand bundle |
| let kcfi_bundle = self.kcfi_operand_bundle(fn_attrs, fn_abi, instance, llfn); |
| let kcfi_bundle = kcfi_bundle.as_ref().map(|b| &*b.raw); |
| if let Some(kcfi_bundle) = kcfi_bundle { |
| bundles.push(kcfi_bundle); |
| } |
| |
| let call = unsafe { |
| llvm::LLVMRustBuildCall( |
| self.llbuilder, |
| llty, |
| llfn, |
| args.as_ptr() as *const &llvm::Value, |
| args.len() as c_uint, |
| bundles.as_ptr(), |
| bundles.len() as c_uint, |
| ) |
| }; |
| if let Some(fn_abi) = fn_abi { |
| fn_abi.apply_attrs_callsite(self, call); |
| } |
| call |
| } |
| |
| fn zext(&mut self, val: &'ll Value, dest_ty: &'ll Type) -> &'ll Value { |
| unsafe { llvm::LLVMBuildZExt(self.llbuilder, val, dest_ty, UNNAMED) } |
| } |
| |
| fn apply_attrs_to_cleanup_callsite(&mut self, llret: &'ll Value) { |
| if llvm_util::get_version() < (17, 0, 2) { |
| // Work around https://github.com/llvm/llvm-project/issues/66984. |
| let noinline = llvm::AttributeKind::NoInline.create_attr(self.llcx); |
| attributes::apply_to_callsite(llret, llvm::AttributePlace::Function, &[noinline]); |
| } else { |
| // Cleanup is always the cold path. |
| let cold_inline = llvm::AttributeKind::Cold.create_attr(self.llcx); |
| attributes::apply_to_callsite(llret, llvm::AttributePlace::Function, &[cold_inline]); |
| } |
| } |
| } |
| |
| impl<'ll> StaticBuilderMethods for Builder<'_, 'll, '_> { |
| fn get_static(&mut self, def_id: DefId) -> &'ll Value { |
| // Forward to the `get_static` method of `CodegenCx` |
| self.cx().get_static(def_id) |
| } |
| } |
| |
| impl<'a, 'll, 'tcx> Builder<'a, 'll, 'tcx> { |
| fn with_cx(cx: &'a CodegenCx<'ll, 'tcx>) -> Self { |
| // Create a fresh builder from the crate context. |
| let llbuilder = unsafe { llvm::LLVMCreateBuilderInContext(cx.llcx) }; |
| Builder { llbuilder, cx } |
| } |
| |
| pub fn llfn(&self) -> &'ll Value { |
| unsafe { llvm::LLVMGetBasicBlockParent(self.llbb()) } |
| } |
| |
| fn position_at_start(&mut self, llbb: &'ll BasicBlock) { |
| unsafe { |
| llvm::LLVMRustPositionBuilderAtStart(self.llbuilder, llbb); |
| } |
| } |
| |
| fn align_metadata(&mut self, load: &'ll Value, align: Align) { |
| unsafe { |
| let v = [self.cx.const_u64(align.bytes())]; |
| |
| llvm::LLVMSetMetadata( |
| load, |
| llvm::MD_align as c_uint, |
| llvm::LLVMMDNodeInContext(self.cx.llcx, v.as_ptr(), v.len() as c_uint), |
| ); |
| } |
| } |
| |
| fn noundef_metadata(&mut self, load: &'ll Value) { |
| unsafe { |
| llvm::LLVMSetMetadata( |
| load, |
| llvm::MD_noundef as c_uint, |
| llvm::LLVMMDNodeInContext(self.cx.llcx, ptr::null(), 0), |
| ); |
| } |
| } |
| |
| pub fn minnum(&mut self, lhs: &'ll Value, rhs: &'ll Value) -> &'ll Value { |
| unsafe { llvm::LLVMRustBuildMinNum(self.llbuilder, lhs, rhs) } |
| } |
| |
| pub fn maxnum(&mut self, lhs: &'ll Value, rhs: &'ll Value) -> &'ll Value { |
| unsafe { llvm::LLVMRustBuildMaxNum(self.llbuilder, lhs, rhs) } |
| } |
| |
| pub fn insert_element( |
| &mut self, |
| vec: &'ll Value, |
| elt: &'ll Value, |
| idx: &'ll Value, |
| ) -> &'ll Value { |
| unsafe { llvm::LLVMBuildInsertElement(self.llbuilder, vec, elt, idx, UNNAMED) } |
| } |
| |
| pub fn shuffle_vector( |
| &mut self, |
| v1: &'ll Value, |
| v2: &'ll Value, |
| mask: &'ll Value, |
| ) -> &'ll Value { |
| unsafe { llvm::LLVMBuildShuffleVector(self.llbuilder, v1, v2, mask, UNNAMED) } |
| } |
| |
| pub fn vector_reduce_fadd(&mut self, acc: &'ll Value, src: &'ll Value) -> &'ll Value { |
| unsafe { llvm::LLVMRustBuildVectorReduceFAdd(self.llbuilder, acc, src) } |
| } |
| pub fn vector_reduce_fmul(&mut self, acc: &'ll Value, src: &'ll Value) -> &'ll Value { |
| unsafe { llvm::LLVMRustBuildVectorReduceFMul(self.llbuilder, acc, src) } |
| } |
| pub fn vector_reduce_fadd_reassoc(&mut self, acc: &'ll Value, src: &'ll Value) -> &'ll Value { |
| unsafe { |
| let instr = llvm::LLVMRustBuildVectorReduceFAdd(self.llbuilder, acc, src); |
| llvm::LLVMRustSetAllowReassoc(instr); |
| instr |
| } |
| } |
| pub fn vector_reduce_fmul_reassoc(&mut self, acc: &'ll Value, src: &'ll Value) -> &'ll Value { |
| unsafe { |
| let instr = llvm::LLVMRustBuildVectorReduceFMul(self.llbuilder, acc, src); |
| llvm::LLVMRustSetAllowReassoc(instr); |
| instr |
| } |
| } |
| pub fn vector_reduce_add(&mut self, src: &'ll Value) -> &'ll Value { |
| unsafe { llvm::LLVMRustBuildVectorReduceAdd(self.llbuilder, src) } |
| } |
| pub fn vector_reduce_mul(&mut self, src: &'ll Value) -> &'ll Value { |
| unsafe { llvm::LLVMRustBuildVectorReduceMul(self.llbuilder, src) } |
| } |
| pub fn vector_reduce_and(&mut self, src: &'ll Value) -> &'ll Value { |
| unsafe { llvm::LLVMRustBuildVectorReduceAnd(self.llbuilder, src) } |
| } |
| pub fn vector_reduce_or(&mut self, src: &'ll Value) -> &'ll Value { |
| unsafe { llvm::LLVMRustBuildVectorReduceOr(self.llbuilder, src) } |
| } |
| pub fn vector_reduce_xor(&mut self, src: &'ll Value) -> &'ll Value { |
| unsafe { llvm::LLVMRustBuildVectorReduceXor(self.llbuilder, src) } |
| } |
| pub fn vector_reduce_fmin(&mut self, src: &'ll Value) -> &'ll Value { |
| unsafe { |
| llvm::LLVMRustBuildVectorReduceFMin(self.llbuilder, src, /*NoNaNs:*/ false) |
| } |
| } |
| pub fn vector_reduce_fmax(&mut self, src: &'ll Value) -> &'ll Value { |
| unsafe { |
| llvm::LLVMRustBuildVectorReduceFMax(self.llbuilder, src, /*NoNaNs:*/ false) |
| } |
| } |
| pub fn vector_reduce_min(&mut self, src: &'ll Value, is_signed: bool) -> &'ll Value { |
| unsafe { llvm::LLVMRustBuildVectorReduceMin(self.llbuilder, src, is_signed) } |
| } |
| pub fn vector_reduce_max(&mut self, src: &'ll Value, is_signed: bool) -> &'ll Value { |
| unsafe { llvm::LLVMRustBuildVectorReduceMax(self.llbuilder, src, is_signed) } |
| } |
| |
| pub fn add_clause(&mut self, landing_pad: &'ll Value, clause: &'ll Value) { |
| unsafe { |
| llvm::LLVMAddClause(landing_pad, clause); |
| } |
| } |
| |
| pub fn catch_ret(&mut self, funclet: &Funclet<'ll>, unwind: &'ll BasicBlock) -> &'ll Value { |
| let ret = unsafe { llvm::LLVMBuildCatchRet(self.llbuilder, funclet.cleanuppad(), unwind) }; |
| ret.expect("LLVM does not have support for catchret") |
| } |
| |
| fn check_call<'b>( |
| &mut self, |
| typ: &str, |
| fn_ty: &'ll Type, |
| llfn: &'ll Value, |
| args: &'b [&'ll Value], |
| ) -> Cow<'b, [&'ll Value]> { |
| assert!( |
| self.cx.type_kind(fn_ty) == TypeKind::Function, |
| "builder::{typ} not passed a function, but {fn_ty:?}" |
| ); |
| |
| let param_tys = self.cx.func_params_types(fn_ty); |
| |
| let all_args_match = iter::zip(¶m_tys, args.iter().map(|&v| self.val_ty(v))) |
| .all(|(expected_ty, actual_ty)| *expected_ty == actual_ty); |
| |
| if all_args_match { |
| return Cow::Borrowed(args); |
| } |
| |
| let casted_args: Vec<_> = iter::zip(param_tys, args) |
| .enumerate() |
| .map(|(i, (expected_ty, &actual_val))| { |
| let actual_ty = self.val_ty(actual_val); |
| if expected_ty != actual_ty { |
| debug!( |
| "type mismatch in function call of {:?}. \ |
| Expected {:?} for param {}, got {:?}; injecting bitcast", |
| llfn, expected_ty, i, actual_ty |
| ); |
| self.bitcast(actual_val, expected_ty) |
| } else { |
| actual_val |
| } |
| }) |
| .collect(); |
| |
| Cow::Owned(casted_args) |
| } |
| |
| pub fn va_arg(&mut self, list: &'ll Value, ty: &'ll Type) -> &'ll Value { |
| unsafe { llvm::LLVMBuildVAArg(self.llbuilder, list, ty, UNNAMED) } |
| } |
| |
| pub(crate) fn call_intrinsic(&mut self, intrinsic: &str, args: &[&'ll Value]) -> &'ll Value { |
| let (ty, f) = self.cx.get_intrinsic(intrinsic); |
| self.call(ty, None, None, f, args, None, None) |
| } |
| |
| fn call_lifetime_intrinsic(&mut self, intrinsic: &str, ptr: &'ll Value, size: Size) { |
| let size = size.bytes(); |
| if size == 0 { |
| return; |
| } |
| |
| if !self.cx().sess().emit_lifetime_markers() { |
| return; |
| } |
| |
| self.call_intrinsic(intrinsic, &[self.cx.const_u64(size), ptr]); |
| } |
| |
| pub(crate) fn phi( |
| &mut self, |
| ty: &'ll Type, |
| vals: &[&'ll Value], |
| bbs: &[&'ll BasicBlock], |
| ) -> &'ll Value { |
| assert_eq!(vals.len(), bbs.len()); |
| let phi = unsafe { llvm::LLVMBuildPhi(self.llbuilder, ty, UNNAMED) }; |
| unsafe { |
| llvm::LLVMAddIncoming(phi, vals.as_ptr(), bbs.as_ptr(), vals.len() as c_uint); |
| phi |
| } |
| } |
| |
| fn add_incoming_to_phi(&mut self, phi: &'ll Value, val: &'ll Value, bb: &'ll BasicBlock) { |
| unsafe { |
| llvm::LLVMAddIncoming(phi, &val, &bb, 1 as c_uint); |
| } |
| } |
| |
| fn fptoint_sat(&mut self, signed: bool, val: &'ll Value, dest_ty: &'ll Type) -> &'ll Value { |
| let src_ty = self.cx.val_ty(val); |
| let (float_ty, int_ty, vector_length) = if self.cx.type_kind(src_ty) == TypeKind::Vector { |
| assert_eq!(self.cx.vector_length(src_ty), self.cx.vector_length(dest_ty)); |
| ( |
| self.cx.element_type(src_ty), |
| self.cx.element_type(dest_ty), |
| Some(self.cx.vector_length(src_ty)), |
| ) |
| } else { |
| (src_ty, dest_ty, None) |
| }; |
| let float_width = self.cx.float_width(float_ty); |
| let int_width = self.cx.int_width(int_ty); |
| |
| let instr = if signed { "fptosi" } else { "fptoui" }; |
| let name = if let Some(vector_length) = vector_length { |
| format!("llvm.{instr}.sat.v{vector_length}i{int_width}.v{vector_length}f{float_width}") |
| } else { |
| format!("llvm.{instr}.sat.i{int_width}.f{float_width}") |
| }; |
| let f = self.declare_cfn(&name, llvm::UnnamedAddr::No, self.type_func(&[src_ty], dest_ty)); |
| self.call(self.type_func(&[src_ty], dest_ty), None, None, f, &[val], None, None) |
| } |
| |
| pub(crate) fn landing_pad( |
| &mut self, |
| ty: &'ll Type, |
| pers_fn: &'ll Value, |
| num_clauses: usize, |
| ) -> &'ll Value { |
| // Use LLVMSetPersonalityFn to set the personality. It supports arbitrary Consts while, |
| // LLVMBuildLandingPad requires the argument to be a Function (as of LLVM 12). The |
| // personality lives on the parent function anyway. |
| self.set_personality_fn(pers_fn); |
| unsafe { |
| llvm::LLVMBuildLandingPad(self.llbuilder, ty, None, num_clauses as c_uint, UNNAMED) |
| } |
| } |
| |
| pub(crate) fn callbr( |
| &mut self, |
| llty: &'ll Type, |
| fn_attrs: Option<&CodegenFnAttrs>, |
| fn_abi: Option<&FnAbi<'tcx, Ty<'tcx>>>, |
| llfn: &'ll Value, |
| args: &[&'ll Value], |
| default_dest: &'ll BasicBlock, |
| indirect_dest: &[&'ll BasicBlock], |
| funclet: Option<&Funclet<'ll>>, |
| instance: Option<Instance<'tcx>>, |
| ) -> &'ll Value { |
| debug!("invoke {:?} with args ({:?})", llfn, args); |
| |
| let args = self.check_call("callbr", llty, llfn, args); |
| let funclet_bundle = funclet.map(|funclet| funclet.bundle()); |
| let funclet_bundle = funclet_bundle.as_ref().map(|b| &*b.raw); |
| let mut bundles: SmallVec<[_; 2]> = SmallVec::new(); |
| if let Some(funclet_bundle) = funclet_bundle { |
| bundles.push(funclet_bundle); |
| } |
| |
| // Emit CFI pointer type membership test |
| self.cfi_type_test(fn_attrs, fn_abi, instance, llfn); |
| |
| // Emit KCFI operand bundle |
| let kcfi_bundle = self.kcfi_operand_bundle(fn_attrs, fn_abi, instance, llfn); |
| let kcfi_bundle = kcfi_bundle.as_ref().map(|b| &*b.raw); |
| if let Some(kcfi_bundle) = kcfi_bundle { |
| bundles.push(kcfi_bundle); |
| } |
| |
| let callbr = unsafe { |
| llvm::LLVMRustBuildCallBr( |
| self.llbuilder, |
| llty, |
| llfn, |
| default_dest, |
| indirect_dest.as_ptr(), |
| indirect_dest.len() as c_uint, |
| args.as_ptr(), |
| args.len() as c_uint, |
| bundles.as_ptr(), |
| bundles.len() as c_uint, |
| UNNAMED, |
| ) |
| }; |
| if let Some(fn_abi) = fn_abi { |
| fn_abi.apply_attrs_callsite(self, callbr); |
| } |
| callbr |
| } |
| |
| // Emits CFI pointer type membership tests. |
| fn cfi_type_test( |
| &mut self, |
| fn_attrs: Option<&CodegenFnAttrs>, |
| fn_abi: Option<&FnAbi<'tcx, Ty<'tcx>>>, |
| instance: Option<Instance<'tcx>>, |
| llfn: &'ll Value, |
| ) { |
| let is_indirect_call = unsafe { llvm::LLVMRustIsNonGVFunctionPointerTy(llfn) }; |
| if self.tcx.sess.is_sanitizer_cfi_enabled() |
| && let Some(fn_abi) = fn_abi |
| && is_indirect_call |
| { |
| if let Some(fn_attrs) = fn_attrs |
| && fn_attrs.no_sanitize.contains(SanitizerSet::CFI) |
| { |
| return; |
| } |
| |
| let mut options = cfi::TypeIdOptions::empty(); |
| if self.tcx.sess.is_sanitizer_cfi_generalize_pointers_enabled() { |
| options.insert(cfi::TypeIdOptions::GENERALIZE_POINTERS); |
| } |
| if self.tcx.sess.is_sanitizer_cfi_normalize_integers_enabled() { |
| options.insert(cfi::TypeIdOptions::NORMALIZE_INTEGERS); |
| } |
| |
| let typeid = if let Some(instance) = instance { |
| cfi::typeid_for_instance(self.tcx, instance, options) |
| } else { |
| cfi::typeid_for_fnabi(self.tcx, fn_abi, options) |
| }; |
| let typeid_metadata = self.cx.typeid_metadata(typeid).unwrap(); |
| |
| // Test whether the function pointer is associated with the type identifier. |
| let cond = self.type_test(llfn, typeid_metadata); |
| let bb_pass = self.append_sibling_block("type_test.pass"); |
| let bb_fail = self.append_sibling_block("type_test.fail"); |
| self.cond_br(cond, bb_pass, bb_fail); |
| |
| self.switch_to_block(bb_fail); |
| self.abort(); |
| self.unreachable(); |
| |
| self.switch_to_block(bb_pass); |
| } |
| } |
| |
| // Emits KCFI operand bundles. |
| fn kcfi_operand_bundle( |
| &mut self, |
| fn_attrs: Option<&CodegenFnAttrs>, |
| fn_abi: Option<&FnAbi<'tcx, Ty<'tcx>>>, |
| instance: Option<Instance<'tcx>>, |
| llfn: &'ll Value, |
| ) -> Option<llvm::OperandBundleDef<'ll>> { |
| let is_indirect_call = unsafe { llvm::LLVMRustIsNonGVFunctionPointerTy(llfn) }; |
| let kcfi_bundle = if self.tcx.sess.is_sanitizer_kcfi_enabled() |
| && let Some(fn_abi) = fn_abi |
| && is_indirect_call |
| { |
| if let Some(fn_attrs) = fn_attrs |
| && fn_attrs.no_sanitize.contains(SanitizerSet::KCFI) |
| { |
| return None; |
| } |
| |
| let mut options = kcfi::TypeIdOptions::empty(); |
| if self.tcx.sess.is_sanitizer_cfi_generalize_pointers_enabled() { |
| options.insert(kcfi::TypeIdOptions::GENERALIZE_POINTERS); |
| } |
| if self.tcx.sess.is_sanitizer_cfi_normalize_integers_enabled() { |
| options.insert(kcfi::TypeIdOptions::NORMALIZE_INTEGERS); |
| } |
| |
| let kcfi_typeid = if let Some(instance) = instance { |
| kcfi::typeid_for_instance(self.tcx, instance, options) |
| } else { |
| kcfi::typeid_for_fnabi(self.tcx, fn_abi, options) |
| }; |
| |
| Some(llvm::OperandBundleDef::new("kcfi", &[self.const_u32(kcfi_typeid)])) |
| } else { |
| None |
| }; |
| kcfi_bundle |
| } |
| |
| /// Emits a call to `llvm.instrprof.mcdc.parameters`. |
| /// |
| /// This doesn't produce any code directly, but is used as input by |
| /// the LLVM pass that handles coverage instrumentation. |
| /// |
| /// (See clang's [`CodeGenPGO::emitMCDCParameters`] for comparison.) |
| /// |
| /// [`CodeGenPGO::emitMCDCParameters`]: |
| /// https://github.com/rust-lang/llvm-project/blob/5399a24/clang/lib/CodeGen/CodeGenPGO.cpp#L1124 |
| pub(crate) fn mcdc_parameters( |
| &mut self, |
| fn_name: &'ll Value, |
| hash: &'ll Value, |
| bitmap_bytes: &'ll Value, |
| ) { |
| debug!("mcdc_parameters() with args ({:?}, {:?}, {:?})", fn_name, hash, bitmap_bytes); |
| |
| assert!(llvm_util::get_version() >= (18, 0, 0), "MCDC intrinsics require LLVM 18 or later"); |
| |
| let llfn = unsafe { llvm::LLVMRustGetInstrProfMCDCParametersIntrinsic(self.cx().llmod) }; |
| let llty = self.cx.type_func( |
| &[self.cx.type_ptr(), self.cx.type_i64(), self.cx.type_i32()], |
| self.cx.type_void(), |
| ); |
| let args = &[fn_name, hash, bitmap_bytes]; |
| let args = self.check_call("call", llty, llfn, args); |
| |
| unsafe { |
| let _ = llvm::LLVMRustBuildCall( |
| self.llbuilder, |
| llty, |
| llfn, |
| args.as_ptr() as *const &llvm::Value, |
| args.len() as c_uint, |
| [].as_ptr(), |
| 0 as c_uint, |
| ); |
| } |
| } |
| |
| pub(crate) fn mcdc_tvbitmap_update( |
| &mut self, |
| fn_name: &'ll Value, |
| hash: &'ll Value, |
| bitmap_bytes: &'ll Value, |
| bitmap_index: &'ll Value, |
| mcdc_temp: &'ll Value, |
| ) { |
| debug!( |
| "mcdc_tvbitmap_update() with args ({:?}, {:?}, {:?}, {:?}, {:?})", |
| fn_name, hash, bitmap_bytes, bitmap_index, mcdc_temp |
| ); |
| assert!(llvm_util::get_version() >= (18, 0, 0), "MCDC intrinsics require LLVM 18 or later"); |
| |
| let llfn = |
| unsafe { llvm::LLVMRustGetInstrProfMCDCTVBitmapUpdateIntrinsic(self.cx().llmod) }; |
| let llty = self.cx.type_func( |
| &[ |
| self.cx.type_ptr(), |
| self.cx.type_i64(), |
| self.cx.type_i32(), |
| self.cx.type_i32(), |
| self.cx.type_ptr(), |
| ], |
| self.cx.type_void(), |
| ); |
| let args = &[fn_name, hash, bitmap_bytes, bitmap_index, mcdc_temp]; |
| let args = self.check_call("call", llty, llfn, args); |
| unsafe { |
| let _ = llvm::LLVMRustBuildCall( |
| self.llbuilder, |
| llty, |
| llfn, |
| args.as_ptr() as *const &llvm::Value, |
| args.len() as c_uint, |
| [].as_ptr(), |
| 0 as c_uint, |
| ); |
| } |
| self.store(self.const_i32(0), mcdc_temp, self.tcx.data_layout.i32_align.abi); |
| } |
| |
| pub(crate) fn mcdc_condbitmap_update( |
| &mut self, |
| fn_name: &'ll Value, |
| hash: &'ll Value, |
| cond_loc: &'ll Value, |
| mcdc_temp: &'ll Value, |
| bool_value: &'ll Value, |
| ) { |
| debug!( |
| "mcdc_condbitmap_update() with args ({:?}, {:?}, {:?}, {:?}, {:?})", |
| fn_name, hash, cond_loc, mcdc_temp, bool_value |
| ); |
| assert!(llvm_util::get_version() >= (18, 0, 0), "MCDC intrinsics require LLVM 18 or later"); |
| let llfn = unsafe { llvm::LLVMRustGetInstrProfMCDCCondBitmapIntrinsic(self.cx().llmod) }; |
| let llty = self.cx.type_func( |
| &[ |
| self.cx.type_ptr(), |
| self.cx.type_i64(), |
| self.cx.type_i32(), |
| self.cx.type_ptr(), |
| self.cx.type_i1(), |
| ], |
| self.cx.type_void(), |
| ); |
| let args = &[fn_name, hash, cond_loc, mcdc_temp, bool_value]; |
| self.check_call("call", llty, llfn, args); |
| unsafe { |
| let _ = llvm::LLVMRustBuildCall( |
| self.llbuilder, |
| llty, |
| llfn, |
| args.as_ptr() as *const &llvm::Value, |
| args.len() as c_uint, |
| [].as_ptr(), |
| 0 as c_uint, |
| ); |
| } |
| } |
| } |
