On 11/04/2011 08:53 AM, Jakub Jelinek wrote: > On Fri, Nov 04, 2011 at 08:48:30AM -0700, Richard Henderson wrote: >> On 11/04/2011 03:57 AM, Jakub Jelinek wrote: >>> + /* Optimize. If mask is known to have all high bits set, >>> + replace op0 with pc_rtx to signal that the instruction >>> + overwrites the whole destination and doesn't use its >>> + previous contents. */ >> >> Why pass in PC, rather than nothing? > > I wanted to avoid adding an extra set of expanders, if there is something, > I can use the same expander and just different insns. There are currently > 16 expanders, we'd need another 16 for that.
*shrug* Ok then. r~
