[Clang] allow SSE/AVX/AVX512 square root intrinsics to be used in constexpr

[bojle]

Fixes #160516

[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 c,h,cpp -- clang/lib/AST/ByteCode/InterpBuiltin.cpp clang/lib/AST/ExprConstant.cpp clang/lib/Headers/avx512fintrin.h clang/lib/Headers/avx512vlintrin.h clang/lib/Headers/avxintrin.h clang/lib/Headers/emmintrin.h clang/lib/Headers/xmmintrin.h clang/test/CodeGen/X86/avx-builtins.c clang/test/CodeGen/X86/avx512f-builtins.c clang/test/CodeGen/X86/avx512vl-builtins.c clang/test/CodeGen/X86/sse-builtins.c clang/test/CodeGen/X86/sse2-builtins.c

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⚠️

View the diff from clang-format here.

diff --git a/clang/lib/Headers/avx512fintrin.h b/clang/lib/Headers/avx512fintrin.h
index 3055911b9..559660ab9 100644
--- a/clang/lib/Headers/avx512fintrin.h
+++ b/clang/lib/Headers/avx512fintrin.h
@@ -1458,8 +1458,8 @@ _mm512_mask_mullox_epi64(__m512i __W, __mmask8 __U, __m512i __A, __m512i __B) {
                                        (__v8df)_mm512_sqrt_round_pd((A), (R)), \
                                        (__v8df)_mm512_setzero_pd()))
 
-static __inline__ __m512d __DEFAULT_FN_ATTRS512_CONSTEXPR
-_mm512_sqrt_pd(__m512d __A) {
+static __inline__ __m512d
+    __DEFAULT_FN_ATTRS512_CONSTEXPR _mm512_sqrt_pd(__m512d __A) {
   return (__m512d)__builtin_ia32_sqrtpd512((__v8df)__A,
                                            _MM_FROUND_CUR_DIRECTION);
 }
@@ -1491,8 +1491,8 @@ _mm512_maskz_sqrt_pd(__mmask8 __U, __m512d __A) {
                                       (__v16sf)_mm512_sqrt_round_ps((A), (R)), \
                                       (__v16sf)_mm512_setzero_ps()))
 
-static __inline__ __m512 __DEFAULT_FN_ATTRS512_CONSTEXPR
-_mm512_sqrt_ps(__m512 __A) {
+static __inline__ __m512
+    __DEFAULT_FN_ATTRS512_CONSTEXPR _mm512_sqrt_ps(__m512 __A) {
   return (__m512)__builtin_ia32_sqrtps512((__v16sf)__A,
                                           _MM_FROUND_CUR_DIRECTION);
 }

[bojle]

@RKSimon please take a look at this, it's ready for review

also, are there any special settings for clang-format while its running in actions?
I run the following:

git clang-format --style=file HEAD~1

it selects .clang-format that looks like this:

BasedOnStyle: LLVM

no changes required locally, but in actions, its reporting some odd kind of format.