[X86] Add missing m64/int64 conversions

[mkuper]

Summary

We had _m_to_int and _m_from_int, but not the int64 versions.

[delena]

LGTM

[delena]

lib/Headers/mmintrin.h

446

Under X86_64 or always?

[mkuper]

Thanks, Elena.

lib/Headers/mmintrin.h

446

Good question. I mean, _m_to_int64 and _mm_cvtm64_si64 are always equivalent, but perhaps both ought to be available only on x86_64.
In any case, right now _mm_cvtm64_si64 is always available, so I'd rather leave it as is. Possibly both should be desiabled for i686 in a separate commit.

lib/Headers/mmintrin.h

_mm_setr_pi8(char __b0, char __b1, char __b2, char __b3, char __b4, char __b5,
     return _mm_set_pi8(__b7, __b6, __b5, __b4, __b3, __b2, __b1, __b0);
 }
 
 #undef __DEFAULT_FN_ATTRS
 
 /* Aliases for compatibility. */
 #define _m_empty _mm_empty
 #define _m_from_int _mm_cvtsi32_si64
+#define _m_from_int64 _mm_cvtsi64_m64
 #define _m_to_int _mm_cvtsi64_si32
+#define _m_to_int64 _mm_cvtm64_si64
 #define _m_packsswb _mm_packs_pi16
 #define _m_packssdw _mm_packs_pi32
 #define _m_packuswb _mm_packs_pu16
 #define _m_punpckhbw _mm_unpackhi_pi8
 #define _m_punpckhwd _mm_unpackhi_pi16
 #define _m_punpckhdq _mm_unpackhi_pi32
 #define _m_punpcklbw _mm_unpacklo_pi8
 #define _m_punpcklwd _mm_unpacklo_pi16

test/CodeGen/mmx-builtins.c

 }
 
 __m64 test_m_from_int(int a) {
   // CHECK-LABEL: test_m_from_int
   // CHECK: insertelement <2 x i32>
   return _m_from_int(a);
 }
 
+__m64 test_m_from_int64(long long a) {
+  // CHECK-LABEL: test_m_from_int64
+  // CHECK: bitcast
+  return _m_from_int64(a);
+}
+
 __m64 test_mm_hadd_pi16(__m64 a, __m64 b) {
   // CHECK-LABEL: test_mm_hadd_pi16
   // CHECK: call x86_mmx @llvm.x86.ssse3.phadd.w
   return _mm_hadd_pi16(a, b);
 }
 
 __m64 test_mm_hadd_pi32(__m64 a, __m64 b) {
   // CHECK-LABEL: test_mm_hadd_pi32

 }
 
 int test_m_to_int(__m64 a) {
   // CHECK-LABEL: test_m_to_int
   // CHECK: extractelement <2 x i32>
   return _m_to_int(a);
 }
 
+long long test_m_to_int64(__m64 a) {
+  // CHECK-LABEL: test_m_to_int64
+  // CHECK: bitcast
+  return _m_to_int64(a);
+}
+
 __m64 test_mm_unpackhi_pi8(__m64 a, __m64 b) {
   // CHECK-LABEL: test_mm_unpackhi_pi8
   // CHECK: call x86_mmx @llvm.x86.mmx.punpckhbw
   return _mm_unpackhi_pi8(a, b);
 }
 
 __m64 test_mm_unpackhi_pi16(__m64 a, __m64 b) {
   // CHECK-LABEL: test_mm_unpackhi_pi16