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Add v8plus target feature to sparc and use it in create_object_file

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This commit is contained in:
Taiki Endo 2024-11-09 03:22:09 +09:00
parent 400a690b5f
commit c059eb7750
13 changed files with 97 additions and 3 deletions
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8
compiler/rustc_codegen_llvm/src/llvm_util.rs
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@ -283,6 +283,12 @@ pub(crate) fn to_llvm_features<'a>(sess: &Session, s: &'a str) -> Option<LLVMFea
// llvm/llvm-project#111598
("wasm32" | "wasm64", "wide-arithmetic") if get_version() < (20, 0, 0) => None,
("sparc", "leoncasa") => Some(LLVMFeature::new("hasleoncasa")),
// In LLVM 19, there is no `v8plus` feature and `v9` means "SPARC-V9 instruction available and SPARC-V8+ ABI used".
// https://github.com/llvm/llvm-project/blob/llvmorg-19.1.0/llvm/lib/Target/Sparc/MCTargetDesc/SparcELFObjectWriter.cpp#L27-L28
// Before LLVM 19, there is no `v8plus` feature and `v9` means "SPARC-V9 instruction available".
// https://github.com/llvm/llvm-project/blob/llvmorg-18.1.0/llvm/lib/Target/Sparc/MCTargetDesc/SparcELFObjectWriter.cpp#L26
("sparc", "v8plus") if get_version().0 == 19 => Some(LLVMFeature::new("v9")),
("sparc", "v8plus") if get_version().0 < 19 => None,
(_, s) => Some(LLVMFeature::new(s)),
}
}
@ -622,6 +628,8 @@ pub(crate) fn global_llvm_features(
.features
.split(',')
.filter(|v| !v.is_empty() && backend_feature_name(sess, v).is_some())
// Drop +v8plus feature introduced in LLVM 20.
.filter(|v| *v != "+v8plus" || get_version() >= (20, 0, 0))
.map(String::from),
);