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Use LLVMIntrinsicGetDeclaration to completely remove the hardcoded intrinsics list

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sayantn
2025-06-15 03:57:44 +05:30
parent cc87afd8c0
commit 9415f3d8a6
6 changed files with 32 additions and 224 deletions
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8
compiler/rustc_codegen_llvm/src/intrinsic.rs
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@@ -378,7 +378,7 @@ impl<'ll, 'tcx> IntrinsicCallBuilderMethods<'tcx> for Builder<'_, 'll, 'tcx> {
sym::ctlz | sym::cttz => {
let y = self.const_bool(false);
let ret = self.call_intrinsic(
&format!("llvm.{name}"),
format!("llvm.{name}"),
&[llty],
&[args[0].immediate(), y],
);
@@ -423,7 +423,7 @@ impl<'ll, 'tcx> IntrinsicCallBuilderMethods<'tcx> for Builder<'_, 'll, 'tcx> {
// always uses `u32`.
let raw_shift = self.intcast(raw_shift, self.val_ty(val), false);
self.call_intrinsic(&llvm_name, &[llty], &[val, val, raw_shift])
self.call_intrinsic(llvm_name, &[llty], &[val, val, raw_shift])
}
sym::saturating_add | sym::saturating_sub => {
let is_add = name == sym::saturating_add;
@@ -434,7 +434,7 @@ impl<'ll, 'tcx> IntrinsicCallBuilderMethods<'tcx> for Builder<'_, 'll, 'tcx> {
if signed { 's' } else { 'u' },
if is_add { "add" } else { "sub" },
);
self.call_intrinsic(&llvm_name, &[llty], &[lhs, rhs])
self.call_intrinsic(llvm_name, &[llty], &[lhs, rhs])
}
_ => bug!(),
}
@@ -2393,7 +2393,7 @@ fn generic_simd_intrinsic<'ll, 'tcx>(
);
let vec_ty = bx.cx.type_vector(elem_ty, in_len as u64);
return Ok(bx.call_intrinsic(&llvm_intrinsic, &[vec_ty], &[lhs, rhs]));
return Ok(bx.call_intrinsic(llvm_intrinsic, &[vec_ty], &[lhs, rhs]));
}
span_bug!(span, "unknown SIMD intrinsic");