[clang] [HLSL] Convert vectors to bool for unary ! (PR #163857)

[Erich Keane via cfe-commits]

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@@ -15944,6 +15944,20 @@ ExprResult Sema::CreateBuiltinUnaryOp(SourceLocation OpLoc,
             return ExprError(Diag(OpLoc, diag::err_typecheck_unary_expr)
                              << resultType << Input.get()->getSourceRange());
         }
+      } else if (Context.getLangOpts().HLSL && resultType->isVectorType() &&
+                 !resultType->hasBooleanRepresentation()) {
+        // HLSL unary logical not behaves like C++, which states that the
----------------
erichkeane wrote:

```suggestion
        // HLSL unary logical 'not' behaves like C++, which states that the
```

https://github.com/llvm/llvm-project/pull/163857