"Bingfeng Mei" <b...@broadcom.com> writes: > In our porting, "movm" is implemented as define_expand. Register move and > memory > move are implmeneted in different define_insn. Register move pattern has no > "m" alternative, and thus causes the "asm operand requires impossible reload". > I should merge these two patterns into one. > > Looking at the descrption of "movm" in internal manual, I found this subtle > requirement is not documented. Maybe we should add some text to avoid > future confusion.
Yes, you are correct in both cases: you must have only one basic move insn for each mode which must handle all cases, and clearer documentation about that requirement would be helpful. Ian
