bjoernager/rust
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Override disjoint_or in the LLVM backend

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This commit is contained in:
Scott McMurray 2025-01-20 00:00:44 -08:00
parent f23025305f
commit 4ee1602eab
6 changed files with 54 additions and 0 deletions
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8
compiler/rustc_codegen_llvm/src/builder.rs
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@ -421,6 +421,14 @@ impl<'a, 'll, 'tcx> BuilderMethods<'a, 'tcx> for Builder<'a, 'll, 'tcx> {
unchecked_umul(x, y) => LLVMBuildNUWMul,
}
fn or_disjoint(&mut self, a: &'ll Value, b: &'ll Value) -> &'ll Value {
unsafe {
let or = llvm::LLVMBuildOr(self.llbuilder, a, b, UNNAMED);
llvm::LLVMSetIsDisjoint(or, True);
or
}
}
set_math_builder_methods! {
fadd_fast(x, y) => (LLVMBuildFAdd, LLVMRustSetFastMath),
fsub_fast(x, y) => (LLVMBuildFSub, LLVMRustSetFastMath),

3
compiler/rustc_codegen_llvm/src/llvm/ffi.rs
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@ -1380,6 +1380,9 @@ unsafe extern "C" {
pub fn LLVMBuildFNeg<'a>(B: &Builder<'a>, V: &'a Value, Name: *const c_char) -> &'a Value;
pub fn LLVMBuildNot<'a>(B: &Builder<'a>, V: &'a Value, Name: *const c_char) -> &'a Value;
// Extra flags on arithmetic
pub fn LLVMSetIsDisjoint(Instr: &Value, IsDisjoint: Bool);
// Memory
pub fn LLVMBuildAlloca<'a>(B: &Builder<'a>, Ty: &'a Type, Name: *const c_char) -> &'a Value;
pub fn LLVMBuildArrayAlloca<'a>(