[Headers][X86] Add constexpr support for some AVX[512] intrinsics.

[moorabbit]

The following AVX[512] intrinsics are now constexpr:

• _mm_mask_cvtepi32_pd
• _mm_maskz_cvtepi32_pd
• _mm_mask_cvtepi32_ps
• _mm_maskz_cvtepi32_ps
• _mm_cvtepu32_pd
• _mm_mask_cvtepu32_pd
• _mm_maskz_cvtepu32_pd
• _mm_cvtepu32_ps
• _mm_mask_cvtepu32_ps
• _mm_maskz_cvtepu32_ps
• _mm256_mask_cvtepi32_pd
• _mm256_maskz_cvtepi32_pd
• _mm256_mask_cvtepi32_ps
• _mm256_maskz_cvtepi32_ps
• _mm256_cvtepu32_pd
• _mm256_mask_cvtepu32_pd
• _mm256_maskz_cvtepu32_pd
• _mm256_cvtepu32_ps
• _mm256_mask_cvtepu32_ps
• _mm256_maskz_cvtepu32_ps
• _mm512_cvtepi64_pd
• _mm512_mask_cvtepi64_pd
• _mm512_maskz_cvtepi64_pd
• _mm512_cvtepu64_pd
• _mm512_mask_cvtepu64_pd
• _mm512_maskz_cvtepu64_pd

This PR is part 2 [part 1] of a series of PRs fixing #155798

[github-actions]

⚠️ C/C++ code formatter, clang-format found issues in your code. ⚠️

You can test this locally with the following command:

git-clang-format --diff origin/main HEAD --extensions h,c -- clang/lib/Headers/avx512dqintrin.h clang/lib/Headers/avx512vlintrin.h clang/test/CodeGen/X86/avx512dq-builtins.c clang/test/CodeGen/X86/avx512vl-builtins.c

⚠️
The reproduction instructions above might return results for more than one PR
in a stack if you are using a stacked PR workflow. You can limit the results by
changing origin/main to the base branch/commit you want to compare against.
⚠️

View the diff from clang-format here.

diff --git a/clang/lib/Headers/avx512dqintrin.h b/clang/lib/Headers/avx512dqintrin.h
index ee211d3ea..a8435d1cb 100644
--- a/clang/lib/Headers/avx512dqintrin.h
+++ b/clang/lib/Headers/avx512dqintrin.h
@@ -483,8 +483,8 @@ _mm512_maskz_cvtps_epu64 (__mmask8 __U, __m256 __A) {
                                              (__v8di)_mm512_setzero_si512(), \
                                              (__mmask8)(U), (int)(R)))
 
-static __inline__ __m512d __DEFAULT_FN_ATTRS512_CONSTEXPR
-_mm512_cvtepi64_pd(__m512i __A) {
+static __inline__ __m512d
+    __DEFAULT_FN_ATTRS512_CONSTEXPR _mm512_cvtepi64_pd(__m512i __A) {
   return (__m512d)__builtin_convertvector((__v8di)__A, __v8df);
 }
 
@@ -713,8 +713,8 @@ _mm512_maskz_cvttps_epu64 (__mmask8 __U, __m256 __A) {
                                               (__v8di)_mm512_setzero_si512(), \
                                               (__mmask8)(U), (int)(R)))
 
-static __inline__ __m512d __DEFAULT_FN_ATTRS512_CONSTEXPR
-_mm512_cvtepu64_pd(__m512i __A) {
+static __inline__ __m512d
+    __DEFAULT_FN_ATTRS512_CONSTEXPR _mm512_cvtepu64_pd(__m512i __A) {
   return (__m512d)__builtin_convertvector((__v8du)__A, __v8df);
 }
 

[moorabbit]

@RKSimon git clang-format doesn't report any formatting errors locally. Do you want me to manually apply the formatting patch suggested by the github-actions bot?

[RKSimon]

@RKSimon git clang-format doesn't report any formatting errors locally. Do you want me to manually apply the formatting patch suggested by the github-actions bot?

No I don't think those are necessary changes tbh.

[RKSimon]

LGTM - cheers