https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101804
--- Comment #2 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The master branch has been updated by H.J. Lu <h...@gcc.gnu.org>: https://gcc.gnu.org/g:3d7ccbc1efbd475031a9a4a6110c531f71fbf631 commit r12-2829-g3d7ccbc1efbd475031a9a4a6110c531f71fbf631 Author: H.J. Lu <hjl.to...@gmail.com> Date: Fri Aug 6 12:32:01 2021 -0700 x86: Optimize load of const FP all bits set vectors Check float_vector_all_ones_operand for vector floating-point modes to optimize load of const floating-point all bits set vectors. gcc/ PR target/101804 * config/i386/constraints.md (BC): Document for integer SSE constant all bits set operand. (BF): New constraint for const floating-point all bits set vectors. * config/i386/i386.c (standard_sse_constant_p): Likewise. (standard_sse_constant_opcode): Likewise. * config/i386/sse.md (sseconstm1): New mode attribute. (mov<mode>_internal): Replace BC with <sseconstm1>. gcc/testsuite/ PR target/101804 * gcc.target/i386/avx2-gather-2.c: Pass -march=skylake instead of "-mavx2 -mtune=skylake". Scan vpcmpeqd.
