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[clang][codegen] Mention the invariant that LLVM demangler should be … #117346

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Nov 25, 2024
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[clang][codegen] Mention the invariant that LLVM demangler should be … #117346

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[clang][codegen] Mention the invariant that LLVM demangler should be …
VitaNuo Nov 22, 2024
47cac54
[clang][codegen] Fix formatting
VitaNuo Nov 22, 2024
9d6a16d
[clang][codegen] Change the comment text to be more detailed on what …
VitaNuo Nov 22, 2024
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9 changes: 9 additions & 0 deletions clang/lib/CodeGen/CodeGenModule.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -2047,6 +2047,15 @@ StringRef CodeGenModule::getMangledName(GlobalDecl GD) {
GD.getWithKernelReferenceKind(KernelReferenceKind::Kernel),
ND));

// This invariant should hold true in the future.
// Prior work:
// https://discourse.llvm.org/t/rfc-clang-diagnostic-for-demangling-failures/82835/8
// https://github.com/llvm/llvm-project/issues/111345
// assert((MangledName.startswith("_Z") || MangledName.startswith("?")) &&
// !GD->hasAttr<AsmLabelAttr>() &&
// llvm::demangle(MangledName) != MangledName &&
// "LLVM demangler must demangle clang-generated names");

auto Result = Manglings.insert(std::make_pair(MangledName, GD));
return MangledDeclNames[CanonicalGD] = Result.first->first();
}
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