Vaibhav Shrimali <vaibhav.shrimali@xxxxxxxxx> writes: > Thanks for all your help so far. I now think I am closer to my goal. > In order to execute : > XOR [EBP+4], [EBP] > after executing : > PUSH EBP > > in the prologue, I need to use : emit_insn (gen_xorsi3 (DESTREG, SRC1, SRC2)); > So I checked and I can generate a register such that: > rtx ebp_reg = gen_rtx_REG(Pmode, BP_REG); > this would be a hard register. > rtx ebp_plus = gen_rtx_PLUS(Pmode, ebp_reg, 4); > > so now executing :- > > emit_insn (gen_xorsi3 (ebp_plus, ebp_plus, ebp_reg)); > > I dont know if ebp_plus would be converted to [XOR+4] or not, although > it is derived from the hard register ebp_reg. > > If I am wrong in this approach, please correct me. At some point you have to try it and see what happens. The dump files will show you the generated RTL. Ian
