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Fix for uninhabited llvm intrinsic return type

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This commit is contained in:
bjorn3 2025-11-17 18:29:05 +00:00
parent 62e17e920c
commit 17f6652641
1 changed files with 5 additions and 6 deletions
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11
compiler/rustc_codegen_ssa/src/mir/block.rs
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@ -1040,8 +1040,10 @@ impl<'a, 'tcx, Bx: BuilderMethods<'a, 'tcx>> FunctionCx<'a, 'tcx, Bx> {
&& let Some(name) = bx.tcx().codegen_fn_attrs(instance.def_id()).symbol_name
&& name.as_str().starts_with("llvm.")
{
let dest_ty = destination.ty(&self.mir.local_decls, bx.tcx()).ty;
let return_dest = if dest_ty.is_unit() {
let result_layout =
self.cx.layout_of(self.monomorphized_place_ty(destination.as_ref()));
let return_dest = if result_layout.is_zst() {
ReturnDest::Nothing
} else if let Some(index) = destination.as_local() {
match self.locals[index] {
@ -1070,10 +1072,7 @@ impl<'a, 'tcx, Bx: BuilderMethods<'a, 'tcx>> FunctionCx<'a, 'tcx, Bx> {
self.store_return(
bx,
return_dest,
&ArgAbi {
layout: bx.layout_of(dest_ty),
mode: PassMode::Direct(ArgAttributes::new()),
},
&ArgAbi { layout: result_layout, mode: PassMode::Direct(ArgAttributes::new()) },
llret,
);
return helper.funclet_br(self, bx, target, mergeable_succ);