[clang] Add ParserConversionAction (PR #169803)

[Abhina Sree via cfe-commits]

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@@ -564,6 +564,9 @@ unsigned Parser::ParseAttributeArgsCommon(
               nullptr,
               Sema::ExpressionEvaluationContextRecord::EK_AttrArgument);
 
+          SaveAndRestore<ConversionAction> SavedTranslationState(
+              ParserConversionAction, CA_NoConversion);
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abhina-sree wrote:

The only usage left is when parsing asm strings, if I can change that to parse as an unevaluated string, we don't need the ParserConversionAction

https://github.com/llvm/llvm-project/pull/169803