[clang] [X86] Add MMX/SSE/AVX PHADD/SUB & HADDPS/D intrinsics to be used in constexpr (PR #156822)

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@@ -1093,24 +1093,34 @@ __m256d test_mm256_hadd_pd(__m256d A, __m256d B) {
   // CHECK: call {{.*}}<4 x double> @llvm.x86.avx.hadd.pd.256(<4 x double> %{{.*}}, <4 x double> %{{.*}})
   return _mm256_hadd_pd(A, B);
 }
+TEST_CONSTEXPR(match_m256d(_mm256_hadd_pd((__m256d){1.0, 2.0, 3.0, 4.0}, (__m256d){5.0, 6.0, 7.0, 8.0}), 3.0, 7.0, 11.0, 15.0));
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whytolearn wrote:

this is my error, i will more cautious, thank you

https://github.com/llvm/llvm-project/pull/156822