[clang][x86] Add constexpr support for _mm_cvtsi64_sd

RKSimon · RKSimon · commit 712c90e479f9 · 2024-11-06T18:35:03.000Z
diff --git a/clang/lib/Headers/emmintrin.h b/clang/lib/Headers/emmintrin.h
@@ -3272,8 +3272,8 @@ static __inline__ __m128i __DEFAULT_FN_ATTRS _mm_cmplt_epi32(__m128i __a,
 /// \returns A 128-bit vector of [2 x double] whose lower 64 bits contain the
 ///    converted value of the second operand. The upper 64 bits are copied from
 ///    the upper 64 bits of the first operand.
-static __inline__ __m128d __DEFAULT_FN_ATTRS _mm_cvtsi64_sd(__m128d __a,
-                                                            long long __b) {
+static __inline__ __m128d __DEFAULT_FN_ATTRS_CONSTEXPR
+_mm_cvtsi64_sd(__m128d __a, long long __b) {
   __a[0] = __b;
   return __a;
 }
diff --git a/clang/test/CodeGen/X86/sse2-builtins.c b/clang/test/CodeGen/X86/sse2-builtins.c
@@ -610,6 +610,7 @@ __m128d test_mm_cvtsi64_sd(__m128d A, long long B) {
   // X64: insertelement <2 x double> %{{.*}}, double %{{.*}}, i32 0
   return _mm_cvtsi64_sd(A, B);
 }
+TEST_CONSTEXPR(match_m128d(_mm_cvtsi64_sd((__m128d){-42.0, +99.0}, 55), +55.0, +99.0));
 #endif
 
 __m128i test_mm_cvtsi64_si128(long long A) {

Original file line number	Diff line number	Diff line change
`@@ -610,6 +610,7 @@ __m128d test_mm_cvtsi64_sd(__m128d A, long long B) {`
`610`	`610`	`// X64: insertelement <2 x double> %{{.}}, double %{{.}}, i32 0`
`611`	`611`	`return _mm_cvtsi64_sd(A, B);`
`612`	`612`	`}`
	`613`	`+TEST_CONSTEXPR(match_m128d(_mm_cvtsi64_sd((__m128d){-42.0, +99.0}, 55), +55.0, +99.0));`
`613`	`614`	`#endif`
`614`	`615`
`615`	`616`	`__m128i test_mm_cvtsi64_si128(long long A) {`