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| author | Matthias Krüger <476013+matthiaskrgr@users.noreply.github.com> | 2025-05-30 07:01:30 +0200 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2025-05-30 07:01:30 +0200 |
| commit | 5023691213f12b49ff9b47dba8c1f79479279f5e (patch) | |
| tree | b5f0524d53caec8f0b096e437884290b068e6052 /compiler/rustc_codegen_gcc/example | |
| parent | ad2d91ce11ccdad5af3b7eca3c29c72a4ed06f74 (diff) | |
| parent | 94cc72682ee840f7330f7703af74a2eee67fbba3 (diff) | |
| download | rust-5023691213f12b49ff9b47dba8c1f79479279f5e.tar.gz rust-5023691213f12b49ff9b47dba8c1f79479279f5e.zip | |
Rollup merge of #141538 - folkertdev:systemv-x86_64-va_arg, r=workingjubilee
implement `va_arg` for x86_64 systemv tracking issue: https://github.com/rust-lang/rust/issues/44930 Turns out LLVM's `va_arg` is also unreliable for this target. https://github.com/llvm/llvm-project/issues/141361 So, like clang, we implement our own. I used - the spec at https://gitlab.com/x86-psABIs/x86-64-ABI - the clang implementation at https://github.com/llvm/llvm-project/blob/9a440f84773c56d3803f330774acb2b4f471d5b4/clang/lib/CodeGen/Targets/X86.cpp#L3041 We can take a bunch of shortcuts because the return type of `va_list` must implement `VaArgSafe`. I also extended some of the tests, because up to 11 floats can be stored in the `reg_safe_area` for this calling convention. r? `@workingjubilee` `@rustbot` label +F-c_variadic try-job: x86_64-apple-1
Diffstat (limited to 'compiler/rustc_codegen_gcc/example')
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