https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87558
Bug ID: 87558
Summary: Missing _mm_storeu_si64() intrinsic
Product: gcc
Version: 8.2.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: gcc at gms dot tf
Target Milestone: ---
Minimal example:
#include <emmintrin.h>
void foo(__m128i x, unsigned char*o)
{
_mm_storeu_si64((void*)o, x);
}
Excpected behaviour: compiles fine with gcc -march=haswell
Actual behaviour: '_mm_storeu_si64' was not declared in this scope. Also tested
with gcc 7.2 and trunk. Same issue.
FWIW, clang <= 7 also misses this intrinsic, but clang trunk has it.
GCC does include _mm_storel_epi64(), though.
The Intel Intrinsics Guide lists both as:
void _mm_storeu_si64 (void* mem_addr, __m128i a)
#include <immintrin.h>
Instruction: movq m64, xmm
CPUID Flags: SSE
void _mm_storel_epi64 (__m128i* mem_addr, __m128i a)
#include <emmintrin.h>
Instruction: movq m64, xmm
CPUID Flags: SSE2
