[clang] [X86] Update BMI, BMI2 and TBM constexpr tests (PR #156260)

[Burhan Söğüt via cfe-commits]

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@@ -4,252 +4,220 @@
 
 #if defined(__cplusplus) && (__cplusplus >= 201103L)
 
+
+#define TEST_CONSTEXPR(...) static_assert(__VA_ARGS__, #__VA_ARGS__)
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bursow wrote:

Hi, I'm a bit confused. The tests pass because the C++11 compatibility issue in builtin_test_helpers.h was resolved. If I revert those changes, the tests fail again. Is there another way I should be approaching this?

https://github.com/llvm/llvm-project/pull/156260