On 09/14/2011 05:44 PM, Richard Sandiford wrote:
> A SUBREG may not be REG nor CONSTANT. Don't you need > to check REG_P/CONSTANT_P on SUBREG?Yeah, good point. There should be a "&& REG_P (SUBREG_REG (new_rtx))" in there. Probably also worth checking for non-paradoxical subregs.
I was going to suggest the former.Paradoxical subregs are already handled elsewhere in fwprop, but it also shouldn't hurt to include them.
Paolo
