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Don't begin defining a function when codegening a naked function

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While LLVM is rather permissive in this regards, some other codegen
backends demand that once you declare a function for definition you
actually define contents of the function, which doesn't happen for naked
functions as we actually generate assembly for them.
This commit is contained in:
bjorn3 2024-12-12 19:29:54 +00:00
parent 03f4e886dc
commit ffdc292cca
1 changed files with 8 additions and 8 deletions
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16
compiler/rustc_codegen_ssa/src/mir/mod.rs
View file

@ -170,19 +170,19 @@ pub fn codegen_mir<'a, 'tcx, Bx: BuilderMethods<'a, 'tcx>>(
) {
assert!(!instance.args.has_infer());
let tcx = cx.tcx();
let llfn = cx.get_fn(instance);
let mut mir = cx.tcx().instance_mir(instance.def);
let mut mir = tcx.instance_mir(instance.def);
let fn_abi = cx.fn_abi_of_instance(instance, ty::List::empty());
debug!("fn_abi: {:?}", fn_abi);
if tcx.codegen_fn_attrs(instance.def_id()).flags.contains(CodegenFnAttrFlags::NAKED) {
if cx.tcx().codegen_fn_attrs(instance.def_id()).flags.contains(CodegenFnAttrFlags::NAKED) {
crate::mir::naked_asm::codegen_naked_asm::<Bx>(cx, &mir, instance);
return;
}
let tcx = cx.tcx();
let llfn = cx.get_fn(instance);
let fn_abi = cx.fn_abi_of_instance(instance, ty::List::empty());
debug!("fn_abi: {:?}", fn_abi);
if tcx.features().ergonomic_clones() {
let monomorphized_mir = instance.instantiate_mir_and_normalize_erasing_regions(
tcx,