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...u've seen our current spill code assumes that spill/reloads are single instructions. I think the best way to work around this is to introduce load/store pseudo-instructions and expand these after register allocation. Cheers, Lang. On Sat, Feb 23, 2013 at 12:15 AM, Dmitriy Limonov <earl at excluzive.ws> wrote: > Hi All. > > I'm writing storeRegToStackSlot and loadFromStackSlot function for my > Target. This Target can store/load one byte (not all word) from FrameIndex. > If I need to store 16 bit register I will must to split it to two > instruction like this: > &g...

Hi All. I'm writing storeRegToStackSlot and loadFromStackSlot function for my Target. This Target can store/load one byte (not all word) from FrameIndex. If I need to store 16 bit register I will must to split it to two instruction like this: BuildMI(MBB, MI, dl, get(Z80::LD8xmr)) .addFrameIndex(FrameIndex).addImm(0) .addReg(SrcReg, 0, Z80::subreg_lo); BuildMI(MBB, MI, dl,

...that spill/reloads are > single instructions. I think the best way to work around this is to > introduce load/store pseudo-instructions and expand these after > register allocation. > > Cheers, > Lang. > > > On Sat, Feb 23, 2013 at 12:15 AM, Dmitriy Limonov <earl at excluzive.ws > <mailto:earl at excluzive.ws>> wrote: > > Hi All. > > I'm writing storeRegToStackSlot and loadFromStackSlot function for > my Target. This Target can store/load one byte (not all word) from > FrameIndex. If I need to store 16 bit register I wi...

Hello. I write backend for Z80 cpu and I have some trouble with lowering load/store nodes to different machine opcodes. Some target instructions work with specified registers (not all registers in RegisterClass). Often it's one or two registers. I don't understand how use ComplexPattern in this case. But if I don't use ComplexPattern I'll have other problems - not all