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| author | Nikita Popov <npopov@redhat.com> | 2025-08-08 12:39:30 +0200 |
|---|---|---|
| committer | Nikita Popov <npopov@redhat.com> | 2025-08-11 12:39:23 +0200 |
| commit | ebef9d7f6387fb0541a0dab48d1cd1f86556df04 (patch) | |
| tree | 56bbcaea12e6bc5e848ddecdb3bf95fcf7c4b90c /compiler/rustc_codegen_llvm/src/llvm | |
| parent | 2886b36df4a646dd8d82fb65bf0c9d8d96c1f71a (diff) | |
| download | rust-ebef9d7f6387fb0541a0dab48d1cd1f86556df04.tar.gz rust-ebef9d7f6387fb0541a0dab48d1cd1f86556df04.zip | |
Set dead_on_return attribute for indirect arguments
Set the dead_on_return attribute (added in LLVM 21) for arguments that are passed indirectly, but not byval. This indicates that the value of the argument on return does not matter, enabling additional dead store elimination.
Diffstat (limited to 'compiler/rustc_codegen_llvm/src/llvm')
| -rw-r--r-- | compiler/rustc_codegen_llvm/src/llvm/ffi.rs | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/compiler/rustc_codegen_llvm/src/llvm/ffi.rs b/compiler/rustc_codegen_llvm/src/llvm/ffi.rs index 75d3d27f74e..ad3c3d5932e 100644 --- a/compiler/rustc_codegen_llvm/src/llvm/ffi.rs +++ b/compiler/rustc_codegen_llvm/src/llvm/ffi.rs @@ -249,6 +249,7 @@ pub(crate) enum AttributeKind { FnRetThunkExtern = 41, Writable = 42, DeadOnUnwind = 43, + DeadOnReturn = 44, } /// LLVMIntPredicate |