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Auto merge of #109524 - bzEq:aix-embed-llvmbc, r=nagisa

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Support embedding LLVM bitcode on AIX
This commit is contained in:
bors 2023-06-30 11:39:58 +00:00
commit 56d507dc92
1 changed files with 19 additions and 2 deletions
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21
compiler/rustc_codegen_llvm/src/back/write.rs
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@ -875,14 +875,19 @@ unsafe fn embed_bitcode(
// passed though then these sections will show up in the final output.
// Additionally the flag that we need to set here is `SHF_EXCLUDE`.
//
// * XCOFF - AIX linker ignores content in .ipa and .info if no auxiliary
// symbol associated with these sections.
//
// Unfortunately, LLVM provides no way to set custom section flags. For ELF
// and COFF we emit the sections using module level inline assembly for that
// reason (see issue #90326 for historical background).
let is_aix = cgcx.opts.target_triple.triple().contains("-aix");
let is_apple = cgcx.opts.target_triple.triple().contains("-ios")
|| cgcx.opts.target_triple.triple().contains("-darwin")
|| cgcx.opts.target_triple.triple().contains("-tvos")
|| cgcx.opts.target_triple.triple().contains("-watchos");
if is_apple
|| is_aix
|| cgcx.opts.target_triple.triple().starts_with("wasm")
|| cgcx.opts.target_triple.triple().starts_with("asmjs")
{
@ -895,7 +900,13 @@ unsafe fn embed_bitcode(
);
llvm::LLVMSetInitializer(llglobal, llconst);
let section = if is_apple { c"__LLVM,__bitcode" } else { c".llvmbc" };
let section = if is_apple {
c"__LLVM,__bitcode"
} else if is_aix {
c".ipa"
} else {
c".llvmbc"
};
llvm::LLVMSetSection(llglobal, section.as_ptr().cast());
llvm::LLVMRustSetLinkage(llglobal, llvm::Linkage::PrivateLinkage);
llvm::LLVMSetGlobalConstant(llglobal, llvm::True);
@ -907,7 +918,13 @@ unsafe fn embed_bitcode(
c"rustc.embedded.cmdline".as_ptr().cast(),
);
llvm::LLVMSetInitializer(llglobal, llconst);
let section = if is_apple { c"__LLVM,__cmdline" } else { c".llvmcmd" };
let section = if is_apple {
c"__LLVM,__cmdline"
} else if is_aix {
c".info"
} else {
c".llvmcmd"
};
llvm::LLVMSetSection(llglobal, section.as_ptr().cast());
llvm::LLVMRustSetLinkage(llglobal, llvm::Linkage::PrivateLinkage);
} else {