[clang] 76942a2 - [Headers][X86] Fix incorrect macro definitions for non-constexpr (#153060)

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Author: Bhasawut Singhaphan
Date: 2025-08-12T15:44:24+08:00
New Revision: 76942a2f8f17377225e94f34b4782fb814d9d292

URL: https://github.com/llvm/llvm-project/commit/76942a2f8f17377225e94f34b4782fb814d9d292
DIFF: https://github.com/llvm/llvm-project/commit/76942a2f8f17377225e94f34b4782fb814d9d292.diff

LOG: [Headers][X86] Fix incorrect macro definitions for non-constexpr (#153060)

While working on PR #152910, I discovered some incorrectly defined
`__DEFAULT_FN_ATTRS*_CONSTEXPR` macros for non-constexpr contexts.

Added: 
    

Modified: 
    clang/lib/Headers/avx512fintrin.h
    clang/lib/Headers/avxintrin.h

Removed: 
    


################################################################################
diff  --git a/clang/lib/Headers/avx512fintrin.h b/clang/lib/Headers/avx512fintrin.h
index b3e9efdd519ab..9fc1df3acd3d0 100644
--- a/clang/lib/Headers/avx512fintrin.h
+++ b/clang/lib/Headers/avx512fintrin.h
@@ -180,9 +180,9 @@ typedef enum
 #define __DEFAULT_FN_ATTRS512_CONSTEXPR __DEFAULT_FN_ATTRS512 constexpr
 #define __DEFAULT_FN_ATTRS128_CONSTEXPR __DEFAULT_FN_ATTRS128 constexpr
 #else
-#define __DEFAULT_FN_ATTRS_CONSTEXPR __DEFAULT_FN_ATTRS128
+#define __DEFAULT_FN_ATTRS_CONSTEXPR __DEFAULT_FN_ATTRS
 #define __DEFAULT_FN_ATTRS512_CONSTEXPR __DEFAULT_FN_ATTRS512
-#define __DEFAULT_FN_ATTRS128_CONSTEXPR __DEFAULT_FN_ATTRS
+#define __DEFAULT_FN_ATTRS128_CONSTEXPR __DEFAULT_FN_ATTRS128
 #endif
 
 /* Create vectors with repeated elements */

diff  --git a/clang/lib/Headers/avxintrin.h b/clang/lib/Headers/avxintrin.h
index 5a6d48bc246e3..b8cfaee7cfb46 100644
--- a/clang/lib/Headers/avxintrin.h
+++ b/clang/lib/Headers/avxintrin.h
@@ -70,8 +70,8 @@ typedef __bf16 __m256bh __attribute__((__vector_size__(32), __aligned__(32)));
 #define __DEFAULT_FN_ATTRS_CONSTEXPR __DEFAULT_FN_ATTRS constexpr
 #define __DEFAULT_FN_ATTRS128_CONSTEXPR __DEFAULT_FN_ATTRS128 constexpr
 #else
-#define __DEFAULT_FN_ATTRS_CONSTEXPR __DEFAULT_FN_ATTRS128
-#define __DEFAULT_FN_ATTRS128_CONSTEXPR __DEFAULT_FN_ATTRS
+#define __DEFAULT_FN_ATTRS_CONSTEXPR __DEFAULT_FN_ATTRS
+#define __DEFAULT_FN_ATTRS128_CONSTEXPR __DEFAULT_FN_ATTRS128
 #endif
 
 /* Arithmetic */