Hi Richard,
在 2022/11/24 4:06, Richard Biener 写道: > Wouldn't we usually either add an optab or try to recog a canonical > RTL form instead of adding a new target hook for things like this? Thanks so much for your comments. Please let me make it clear. Do you mean we should create an optab for "setb" pattern (the nested if-then-else insn) and detect candidate insns in ifcvt pass? Then generate the insn with the new optab? My concern is that some candidate insns are target specific. For example, different modes cause additional zero_extend or subreg insns generated on different targets. So I put the detection process into a target hook. Looking forward to your advice. Thanks again Gui Haochen
