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Remove unnecessary int_type_width_signed function #134020

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Merged
merged 1 commit into from
Dec 9, 2024
Merged

Remove unnecessary int_type_width_signed function #134020

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44 changes: 14 additions & 30 deletions compiler/rustc_codegen_llvm/src/intrinsic.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -352,8 +352,17 @@ impl<'ll, 'tcx> IntrinsicCallBuilderMethods<'tcx> for Builder<'_, 'll, 'tcx> {
| sym::saturating_add
| sym::saturating_sub => {
let ty = arg_tys[0];
match int_type_width_signed(ty, self) {
Some((width, signed)) => match name {
if !ty.is_integral() {
tcx.dcx().emit_err(InvalidMonomorphization::BasicIntegerType {
span,
name,
ty,
});
return Ok(());
}
let (size, signed) = ty.int_size_and_signed(self.tcx);
let width = size.bits();
match name {
sym::ctlz | sym::cttz => {
let y = self.const_bool(false);
let ret = self.call_intrinsic(&format!("llvm.{name}.i{width}"), &[
Expand All @@ -376,9 +385,9 @@ impl<'ll, 'tcx> IntrinsicCallBuilderMethods<'tcx> for Builder<'_, 'll, 'tcx> {
self.intcast(ret, llret_ty, false)
}
sym::ctpop => {
let ret = self.call_intrinsic(&format!("llvm.ctpop.i{width}"), &[args
[0]
.immediate()]);
let ret = self.call_intrinsic(&format!("llvm.ctpop.i{width}"), &[
args[0].immediate()
]);
self.intcast(ret, llret_ty, false)
}
sym::bswap => {
Expand Down Expand Up @@ -421,15 +430,6 @@ impl<'ll, 'tcx> IntrinsicCallBuilderMethods<'tcx> for Builder<'_, 'll, 'tcx> {
self.call_intrinsic(llvm_name, &[lhs, rhs])
}
_ => bug!(),
},
None => {
tcx.dcx().emit_err(InvalidMonomorphization::BasicIntegerType {
span,
name,
ty,
});
return Ok(());
}
}
}

Expand Down Expand Up @@ -2531,19 +2531,3 @@ fn generic_simd_intrinsic<'ll, 'tcx>(

span_bug!(span, "unknown SIMD intrinsic");
}

// Returns the width of an int Ty, and if it's signed or not
// Returns None if the type is not an integer
// FIXME: there’s multiple of this functions, investigate using some of the already existing
// stuffs.
fn int_type_width_signed(ty: Ty<'_>, cx: &CodegenCx<'_, '_>) -> Option<(u64, bool)> {
match ty.kind() {
ty::Int(t) => {
Some((t.bit_width().unwrap_or(u64::from(cx.tcx.sess.target.pointer_width)), true))
}
ty::Uint(t) => {
Some((t.bit_width().unwrap_or(u64::from(cx.tcx.sess.target.pointer_width)), false))
}
_ => None,
}
}
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