On May 16, 2014, at 3:07 AM, Bin.Cheng <amker.ch...@gmail.com> wrote: > >> I don't see how regrename will help resolve [base+offset] false >> dependencies. Can you explain? I'd expect effects from >> hardreg-copyprop "commoning" a base register. > It's the register operand's false dependency, rather than the base's > one. Considering below simple case: > mov r1, #const1 > store r1, [base+offset1] > mov r1, #const2 > store r1, [base_offset2] > It should be renamed into: > mov r1, #const1 > store r1, [base+offset1] > mov r2, #const2 > store r2, [base_offset2]
Ah, but, what did this look like right before pass_web?
