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| author | bors <bors@rust-lang.org> | 2025-07-27 23:05:48 +0000 |
|---|---|---|
| committer | bors <bors@rust-lang.org> | 2025-07-27 23:05:48 +0000 |
| commit | 2b5e239c6b86cde974b0ef0f8e23754fb08ff3c5 (patch) | |
| tree | de89cecf7dc22a8aef5a0e27d1d173a1a5c3cee7 /compiler/rustc_codegen_ssa/src | |
| parent | f8e355c230c6eb7b78ffce6a92fd81f78c890524 (diff) | |
| parent | 17519aeaef0b4b9c1a6bcb6d558aba4b26d044a8 (diff) | |
| download | rust-2b5e239c6b86cde974b0ef0f8e23754fb08ff3c5.tar.gz rust-2b5e239c6b86cde974b0ef0f8e23754fb08ff3c5.zip | |
Auto merge of #144225 - purplesyringa:unwinding-intrinsics, r=nikic
Don't special-case llvm.* as nounwind Certain LLVM intrinsics, such as `llvm.wasm.throw`, can unwind. Marking them as nounwind causes us to skip cleanup of locals and optimize out `catch_unwind` under inlining or when `llvm.wasm.throw` is used directly by user code. The motivation for forcibly marking llvm.* as nounwind is no longer present: most intrinsics are linked as `extern "C"` or other non-unwinding ABIs, so we won't codegen `invoke` for them anyway. Closes rust-lang/rust#132416. `@rustbot` label +T-compiler +A-panic
Diffstat (limited to 'compiler/rustc_codegen_ssa/src')
| -rw-r--r-- | compiler/rustc_codegen_ssa/src/codegen_attrs.rs | 9 |
1 files changed, 0 insertions, 9 deletions
diff --git a/compiler/rustc_codegen_ssa/src/codegen_attrs.rs b/compiler/rustc_codegen_ssa/src/codegen_attrs.rs index dd49db26689..3f456fa115a 100644 --- a/compiler/rustc_codegen_ssa/src/codegen_attrs.rs +++ b/compiler/rustc_codegen_ssa/src/codegen_attrs.rs @@ -511,15 +511,6 @@ fn codegen_fn_attrs(tcx: TyCtxt<'_>, did: LocalDefId) -> CodegenFnAttrs { err.emit(); } - // Any linkage to LLVM intrinsics for now forcibly marks them all as never - // unwinds since LLVM sometimes can't handle codegen which `invoke`s - // intrinsic functions. - if let Some(name) = &codegen_fn_attrs.link_name - && name.as_str().starts_with("llvm.") - { - codegen_fn_attrs.flags |= CodegenFnAttrFlags::NEVER_UNWIND; - } - if let Some(features) = check_tied_features( tcx.sess, &codegen_fn_attrs |