[clang] [Headers][X86] Add constexpr support for some AVX[512] intrinsics. (PR #156187)

[Simon Pilgrim via cfe-commits]

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@@ -3586,115 +3584,99 @@ _mm512_maskz_cvttps_epu32 (__mmask16 __U, __m512 __A)
                                             (__v16sf)_mm512_setzero_ps(), \
                                             (__mmask16)(U), (int)(R)))
 
-static __inline__ __m512 __DEFAULT_FN_ATTRS512
-_mm512_cvtepu32_ps (__m512i __A)
-{
+static __inline__ __m512
+    __DEFAULT_FN_ATTRS512_CONSTEXPR _mm512_cvtepu32_ps(__m512i __A) {
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RKSimon wrote:

did clang-format do this?

https://github.com/llvm/llvm-project/pull/156187