On Oct 1, 2019, at 5:14 AM, Segher Boessenkool <seg...@kernel.crashing.org> wrote: > > The regrename pass temporarily changes some operand RTL to CC0 so that > note_stores and scan_rtx don't see those operands. CC0 is deprecated > and we want to remove it, so we need to use something else here. > PC fits the bill fine.
CC0 is, presumably, not part of GENERAL_REGS, but PC is, in some ports. Does that cause a problem here? paul