https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97194
--- Comment #19 from Hongtao.liu <crazylht at gmail dot com> --- (In reply to Richard Biener from comment #17) > (In reply to Hongtao.liu from comment #15) > > I'm working on add the expander, i encounter a problem. > > > > for V32HI vec_set with constant index, the expander existed under > > TARGET_AVX512F, but for variable index, the expander should be existed under > > TARGET_AVX512BW, since vpcmpw zmm only existed in TARGET_AVX512BW, we need > > to restricted the expander under TARGET_AVX512BW, unfortunately operands is > > unvisible in condition scope, any solution to handle such issue? > > can_vec_set_var_idx_p checks insn_operand_matches thus the operand predicate > is what you should adjust I think, sth like > > "const_int_or_reg_for_vec_set_operand" > > or do you mean you do not see the mode of the vector inside the predicate? > Need to sse vector mode inside the predicate. > In that case I think you need to split the pattern? Or think of a way > to implement byte/word insert with just AVVX512F ...
