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From: "cvs-commit at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/102543] -march=cascadelake performs odd alignment peeling
Date: Fri, 19 Nov 2021 01:23:04 +0000 [thread overview]
Message-ID: <bug-102543-4-bxJzxMTfyn@http.gcc.gnu.org/bugzilla/> (raw)
In-Reply-To: <bug-102543-4@http.gcc.gnu.org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102543
--- Comment #11 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by hongtao Liu <liuhongt@gcc.gnu.org>:
https://gcc.gnu.org/g:d3152981f71eef16e50246a94819c39ff1489c70
commit r12-5390-gd3152981f71eef16e50246a94819c39ff1489c70
Author: liuhongt <hongtao.liu@intel.com>
Date: Sat Oct 9 09:42:10 2021 +0800
Reduce cost of aligned sse register store.
Make them be equal to cost of unaligned ones to avoid odd alignment
peeling.
Impact for SPEC2017 on CLX:
fprate:
503.bwaves_r BuildSame
507.cactuBSSN_r -0.22
508.namd_r -0.02
510.parest_r -0.28
511.povray_r -0.20
519.lbm_r BuildSame
521.wrf_r -0.58
526.blender_r -0.30
527.cam4_r 1.07
538.imagick_r 0.01
544.nab_r -0.09
549.fotonik3d_r BuildSame
554.roms_r BuildSame
intrate:
500.perlbench_r -0.25
502.gcc_r -0.15
505.mcf_r BuildSame
520.omnetpp_r 1.03
523.xalancbmk_r -0.13
525.x264_r -0.05
531.deepsjeng_r -0.27
541.leela_r -0.24
548.exchange2_r -0.06
557.xz_r -0.10
999.specrand_ir 2.69
gcc/ChangeLog:
PR target/102543
* config/i386/x86-tune-costs.h (skylake_cost): Reduce cost of
storing 256/512-bit SSE register to be equal to cost of
unaligned store to avoid odd alignment peeling.
(icelake_cost): Ditto.
gcc/testsuite/ChangeLog:
* gcc.target/i386/pr102543.c: New test.
next prev parent reply other threads:[~2021-11-19 1:23 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-09-30 10:13 [Bug target/102543] New: " rguenth at gcc dot gnu.org
2021-09-30 10:14 ` [Bug target/102543] " rguenth at gcc dot gnu.org
2021-10-06 15:00 ` rguenth at gcc dot gnu.org
2021-10-08 9:04 ` crazylht at gmail dot com
2021-10-08 9:49 ` crazylht at gmail dot com
2021-10-08 10:07 ` rguenther at suse dot de
2021-10-08 10:43 ` rguenth at gcc dot gnu.org
2021-10-11 2:19 ` crazylht at gmail dot com
2021-10-12 12:53 ` rguenth at gcc dot gnu.org
2021-10-13 1:20 ` crazylht at gmail dot com
2021-10-13 7:25 ` rguenther at suse dot de
2021-11-19 1:23 ` cvs-commit at gcc dot gnu.org [this message]
2023-11-30 8:53 ` liuhongt at gcc dot gnu.org
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