[clang] [clang:frontend] Move helper functions to common location for SemaSPIRV (PR #125045)

[David Spickett via cfe-commits]

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@@ -0,0 +1,65 @@
+#include "clang/Sema/Common.h"
+
+namespace clang {
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DavidSpickett wrote:

https://llvm.org/docs/CodingStandards.html#use-namespace-qualifiers-to-implement-previously-declared-functions

For example clang::CheckArgTypeIsCorrect instead of opening the clang namespace and just having CheckArgTypeIsCorrect.

https://github.com/llvm/llvm-project/pull/125045