[PATCH] D146604: [NFC] Fix uninitalized member variable use in ASTReader::ParseTargetOptions()

Mon Mar 27 08:33:38 PDT 2023

aaron.ballman added inline comments.

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Comment at: clang/include/clang/Basic/TargetOptions.h:91
   /// \brief Code object version for AMDGPU.
-  CodeObjectVersionKind CodeObjectVersion;
+  CodeObjectVersionKind CodeObjectVersion = CodeObjectVersionKind::COV_4;

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tahonermann wrote:
> I see that `COV_4` is the default as specified in `clang/include/clang/Driver/Options.td`, but I wonder if we want to duplicate that value here. I'm a bit more inclined to default to `COV_None` so that we're not trying to maintain the same default in multiple places. I don't know that it matters though.
> 
> Perhaps it would make sense to add a "default" option value as is done for EABI? I'm not sure.
I think `none` makes the most sense to me. This is set via a CC1 option, and the driver doesn't unconditionally set it (https://github.com/llvm/llvm-project/blob/main/clang/lib/Driver/ToolChains/Clang.cpp#L1073), so I think `none` is safer than assuming `CodeObjectVersion` is meaningful when it's not set by -cc1. WDYT?

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https://reviews.llvm.org/D146604