roy rosen <roy.1ro...@gmail.com> writes: > If I have two load SI insns. Is there any way to combine them into one > load DI insn? > Not using peephole which can catch only this limited case of being > sequential insns. > I have seen something done in ARM (*arith_adjacentmem) but it is very > awkward and would not be realistic if the DI is being used by many > different intrinsics.
As far as I know there is no general pass which does this at present. So it would currently have to a combine pattern like arith_adjacentmem, or a peephole, or a machine specific pass. On many processors the alignment requirements of DImode and SImode loads are different, so it would be hard to do this as a fully general pass. Ian
