https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81904
--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
__m128d h(__m128d x, __m128d y, __m128d z){
__m128d tem = _mm_mul_pd (x,y);
__m128d tem2 = tem + z;
__m128d tem3 = tem - z;
return __builtin_shuffle (tem2, tem3, (__m128i) {0, 3});
}
doesn't quite work (the combiner pattern for fmaddsub is missing). Tried {0,
2} as well.
:
.LFB5021:
.cfi_startproc
vmovapd %xmm0, %xmm3
vfmsub132pd %xmm1, %xmm2, %xmm0
vfmadd132pd %xmm1, %xmm2, %xmm3
vshufpd $2, %xmm0, %xmm3, %xmm0
