[clang] [Clang] Add __builtin_bswapg (PR #162433)

[Oliver Hunt via cfe-commits]

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@@ -130,7 +130,10 @@ int main(void) {
   P(object_size, (s0, 3));
 
   // Whatever
-
+  P(bswapg, ((char)N));
+  P(bswapg, ((short)N));
+  P(bswapg, ((int)N));
+  P(bswapg, ((unsigned long)N));
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ojhunt wrote:

maybe add _BitInt checks to this set of tests as well?

https://github.com/llvm/llvm-project/pull/162433