[clang] [compiler-rt] [clang][DebugInfo] Add inlined subprogram metadata for compiler built-ins (PR #189969)

[J. Ryan Stinnett via cfe-commits]

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@@ -5134,6 +5147,15 @@ void CGDebugInfo::EmitInlineFunctionEnd(CGBuilderTy &Builder) {
   setInlinedAt(llvm::DebugLoc(CurInlinedAt).getInlinedAt());
 }
 
+llvm::DILocation *
+CGDebugInfo::createBuiltinFunctionLocation(CGBuilderTy &Builder,
+                                           GlobalDecl GD) {
+  const auto *FD = cast<FunctionDecl>(GD.getDecl());
+  const auto Location = Builder.getCurrentDebugLocation();
+  return CreateSyntheticInlineAt(Location, getFunctionName(FD),
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jryans wrote:

Ah okay, I can see how that might ease things for some tools, but I am not sure that there's a single file that would make sense to use as the invented location of all possible built-ins... I could perhaps use `clang/lib/CodeGen/CGBuiltin.cpp` as the file, since that's the main file responsible for Clang's built-in code emission...?

How does that sound? Is there a different file you'd prefer?

https://github.com/llvm/llvm-project/pull/189969