[clang] [Headers][X86][F16C] All f16c methods are now constexpr (PR #160317)

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git-clang-format --diff origin/main HEAD --extensions h -- clang/lib/Headers/f16cintrin.h
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``````````diff
diff --git a/clang/lib/Headers/f16cintrin.h b/clang/lib/Headers/f16cintrin.h
index b6ca7088d..2368c4189 100644
--- a/clang/lib/Headers/f16cintrin.h
+++ b/clang/lib/Headers/f16cintrin.h
@@ -46,9 +46,7 @@
 /// \param __a
 ///    A 16-bit half-precision float value.
 /// \returns The converted 32-bit float value.
-static __inline float __DEFAULT_FN_ATTRS128
-_cvtsh_ss(unsigned short __a)
-{
+static __inline float __DEFAULT_FN_ATTRS128 _cvtsh_ss(unsigned short __a) {
   return (float)__builtin_bit_cast(__fp16, __a);
 }
 
@@ -115,9 +113,7 @@ _cvtsh_ss(unsigned short __a)
 ///    A 128-bit vector containing 16-bit half-precision float values. The lower
 ///    64 bits are used in the conversion.
 /// \returns A 128-bit vector of [4 x float] containing converted float values.
-static __inline __m128 __DEFAULT_FN_ATTRS128
-_mm_cvtph_ps(__m128i __a)
-{
+static __inline __m128 __DEFAULT_FN_ATTRS128 _mm_cvtph_ps(__m128i __a) {
   typedef __fp16 __v4fp16 __attribute__((__vector_size__(8)));
 
   __v4hi __v = __builtin_shufflevector((__v8hi)__a, (__v8hi)__a, 0, 1, 2, 3);
@@ -162,9 +158,7 @@ _mm_cvtph_ps(__m128i __a)
 ///    converted to 32-bit single-precision float values.
 /// \returns A vector of [8 x float] containing the converted 32-bit
 ///    single-precision float values.
-static __inline __m256 __DEFAULT_FN_ATTRS256
-_mm256_cvtph_ps(__m128i __a)
-{
+static __inline __m256 __DEFAULT_FN_ATTRS256 _mm256_cvtph_ps(__m128i __a) {
   typedef __fp16 __v8fp16 __attribute__((__vector_size__(16), __aligned__(16)));
 
   return (__m256) __builtin_convertvector((__v8fp16)__a, __v8sf);

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https://github.com/llvm/llvm-project/pull/160317