[clang] [llvm] [HLSL] Add -HV option translation to clang-dxc.exe (PR #83938)

[Chris B via cfe-commits]

================
@@ -69,6 +69,16 @@ LangStandard::Kind LangStandard::getLangKind(StringRef Name) {
       .Default(lang_unspecified);
 }
 
+LangStandard::Kind LangStandard::getHLSLLangKind(StringRef Name) {
+  return llvm::StringSwitch<LangStandard::Kind>(Name)
+      .Case("2016", LangStandard::lang_hlsl2016)
+      .Case("2017", LangStandard::lang_hlsl2017)
+      .Case("2018", LangStandard::lang_hlsl2018)
+      .Case("2021", LangStandard::lang_hlsl2021)
+      .Case("202x", LangStandard::lang_hlsl202x)
+      .Default(LangStandard::lang_unspecified);
+}
----------------
llvm-beanz wrote:

This function isn't needed if you use the Options Enum marshalling that I suggested.

https://github.com/llvm/llvm-project/pull/83938