On Sat, 2023-12-23 at 18:47 +0800, Xi Ruoyao wrote: > On Sat, 2023-12-23 at 18:44 +0800, Xi Ruoyao wrote: > > On Sat, 2023-12-23 at 10:29 +0800, chenglulu wrote: > > > > The performance drop has nothing to do with this patch. I found that > > > > the h264 performance compiled > > > > by r14-6787 compared to r14-6421 dropped by 6.4%. > > > > Then I guess we should create a bug report... > > > > > But there is a problem. My regression test has the following two fail > > > items.(based on r14-6787) > > > > > +FAIL: gcc.dg/cpp/_Pragma3.c (test for excess errors) > > I guess this is https://gcc.gnu.org/PR28123. > > > > +FAIL: gcc.dg/pr86617.c scan-rtl-dump-times final "mem/v" 6 > > I'll take a look on this. Maybe it will show up with Binutils trunk (I > just realized I tested this patch with Binutils 2.41, and it's not > sufficient to really test the change).
I cannot reproduce the issue on a Gentoo dev machine with Binutils 2.41.50.20231218 and the patch on top of r14-6819. And in my manual testing (for ruling out the difference caused by default PIE and SSP) the test also passes: xry111@nanmen2 ~/git-repos/gcc-build $ /home/xry111/git-repos/gcc- build/gcc/xgcc -B/home/xry111/git-repos/gcc-build/gcc/ /home/xry111/git- repos/gcc/gcc/testsuite/gcc.dg/pr86617.c -fdiagnostics-plain-output -Os -fdump-rtl-final -ffat-lto-objects -S -o pr86617.s -fno-stack-protector -fno-pie && grep -c mem/v pr86617.c.348r.final 6 Could you recheck with latest GCC master? -- Xi Ruoyao <xry...@xry111.site> School of Aerospace Science and Technology, Xidian University
