On 07/11/2018 06:20 PM, Paul Koning wrote: > This patch removes the obsolete documentation for > decrement_and_branch_until_zero. It also adds detail to the description for > doloop_end. In particular, it describes the required form of the conditional > branch part of the pattern. > > Ok for trunk? > > paul > > ChangeLog: > > 2018-07-11 Paul Koning <n...@arrl.net> > > * doc/rtl.texi (REG_NONNEG): Remove decrement and branch until > zero reference, add doloop_end instead. > * doc/md.texi (decrement_and_branch_until_zero): Remove. > (Looping patterns): Remove decrement_and_branch_until_zero. Add > detail for doloop_end. OK. I wonder if we can eliminate REG_NONNEG at this point. I'm not sure if it's really being used anymore. I see a reference in the old m68k dbra pattern, but that pattern could well be dead at this point.
jeff
