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lto: handle Apple platforms correctly by eliding __LLVM, from section name

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This commit is contained in:
Augie Fackler 2023-09-07 11:56:25 -04:00
parent 942bdf910c
commit 9ad0396a34
1 changed files with 4 additions and 1 deletions
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5
compiler/rustc_codegen_llvm/src/back/lto.rs
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@ -154,7 +154,10 @@ fn get_bitcode_slice_from_object_data<'a>(
if obj.starts_with(b"\xDE\xC0\x17\x0B") || obj.starts_with(b"BC\xC0\xDE") { if obj.starts_with(b"\xDE\xC0\x17\x0B") || obj.starts_with(b"BC\xC0\xDE") {
return Ok(obj); return Ok(obj);
} }
let section_name = bitcode_section_name(cgcx); // We drop the "__LLVM," prefix here because on Apple platforms there's a notion of "segment name"
// which in the public API for sections gets treated as part of the section name, but internally
// in MachOObjectFile.cpp gets treated separately.
let section_name = bitcode_section_name(cgcx).trim_start_matches("__LLVM,");
let mut len = 0; let mut len = 0;
let data = unsafe { let data = unsafe {
llvm::LLVMRustGetSliceFromObjectDataByName( llvm::LLVMRustGetSliceFromObjectDataByName(