[clang] [llvm] Clang: convert `__m64` intrinsics to unconditionally use SSE2 instead of MMX. (PR #96540)

[Simon Pilgrim via cfe-commits]

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@@ -49,12 +49,10 @@ typedef __bf16 __m128bh __attribute__((__vector_size__(16), __aligned__(16)));
 #endif
 
 /* Define the default attributes for the functions in this file. */
-#define __DEFAULT_FN_ATTRS                                                     \
-  __attribute__((__always_inline__, __nodebug__,                               \
-                 __target__("sse2,no-evex512"), __min_vector_width__(128)))
-#define __DEFAULT_FN_ATTRS_MMX                                                 \
-  __attribute__((__always_inline__, __nodebug__,                               \
-                 __target__("mmx,sse2,no-evex512"), __min_vector_width__(64)))
+#define __DEFAULT_FN_ATTRS __attribute__((__always_inline__, __nodebug__, __target__("sse2,no-evex512"), __min_vector_width__(128)))
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RKSimon wrote:

why lose the 80-column?

https://github.com/llvm/llvm-project/pull/96540