https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81532
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2017-07-24
Ever confirmed|0 |1
--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
-O2 -mavx512bw -mavx512vl is enough to reproduce.
Cleaned up testcase:
typedef unsigned __int128 V __attribute__ ((vector_size (64)));
V
foo (V c)
{
c >>= 0 != c;
return c;
}
The problem is I believe that Yd/Ye constraints use wrong ISA macro.
For !TARGET_64BIT ALL_SSE_REGS is equivalent to SSE_REGS, and for TARGET_64BIT
Yd/Ye is only used in movti_internal. For the corresponding splitters to work,
I believe we need vpextrq and vpinsrq instructions, both of which are AVX512DQ
rather than AVX512BW - AVX512BW is only for vp{ext,ins}r{b,w}.
