Hi, On Fri, 18 Nov 2016, Bin.Cheng wrote:
> On Wed, Nov 16, 2016 at 3:05 PM, Andreas Schwab <sch...@suse.de> wrote: > > On Nov 14 2016, Michael Matz <m...@suse.de> wrote: > > > >> PR missed-optimization/77881 > >> * combine.c (simplify_comparison): Remove useless subregs > >> also inside the loop, not just after it. > >> (make_compound_operation): Recognize some subregs as being > >> masking as well. > > > > This breaks gcc.c-torture/execute/cbrt.c execution test on aarch64. > Hi, > I can confirm that, also new PR opened for tracking. > https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78422 See PR78390 for a patch (comment #8) fixing the aarch64 problem. Ciao, Michael.
