search for: cmovbel

...the following with AVX2: # BB#0: # %entry cmpl %edi, %esi sbbl $0, %edx movl %edx, %eax retq While AVX512 produces: # BB#0: # %entry xorl %ecx, %ecx cmpl %esi, %edi movl $-1, %eax cmovbel %ecx, %eax addl %edx, %eax retq So we would still end-up with cases where when the AVX-512 feature is enabled, instruction selection for scalar code becomes inferior. Finally, we suggest to undo the above issues cause by legalizing i1, by making i1 illegal. This would make ins...