[Bug target/101935] [12 Regression] 538.imagick_r LTO -Ofast regression on Zen2 and Kabylake caused by r12-2666-g29f0e955c97
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101935 Martin Liška changed: What|Removed |Added Status|NEW |RESOLVED Resolution|--- |FIXED --- Comment #4 from Martin Liška --- (In reply to Martin Jambor from comment #0) > When compiled with -flto -Ofast -march=native, the benchmark > 538.imagick_r is about 28% slower on AMD zen2 machines (see > https://lnt.opensuse.org/db_default/v4/SPEC/graph?plot.0=287.507.0 ) > and about 18% slower on Intel Kabylake (see > https://lnt.opensuse.org/db_default/v4/SPEC/graph?plot.0=11.507.0 ) Both testers are back regarding the speed. Thus I'm closing this issue..
[Bug target/101935] [12 Regression] 538.imagick_r LTO -Ofast regression on Zen2 and Kabylake caused by r12-2666-g29f0e955c97
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101935 --- Comment #3 from CVS Commits --- The master branch has been updated by hongtao Liu : https://gcc.gnu.org/g:5b01bfeb8703c264ad402b77741f06f41d7fceac commit r12-3485-g5b01bfeb8703c264ad402b77741f06f41d7fceac Author: H.J. Lu Date: Thu Aug 26 05:31:50 2021 -0700 x86: Add TARGET_AVX256_[MOVE|STORE]_BY_PIECES 1. Add TARGET_AVX256_MOVE_BY_PIECES to perform move by-pieces operation with 256-bit AVX instructions. 2. Add TARGET_AVX256_STORE_BY_PIECES to perform move and store by-pieces operations with 256-bit AVX instructions. They are enabled only for Intel Alder Lake and Intel processors with AVX512. gcc/ PR target/101935 * config/i386/i386.h (TARGET_AVX256_MOVE_BY_PIECES): New. (TARGET_AVX256_STORE_BY_PIECES): Likewise. (MOVE_MAX): Check TARGET_AVX256_MOVE_BY_PIECES and TARGET_AVX256_STORE_BY_PIECES instead of TARGET_AVX256_SPLIT_UNALIGNED_LOAD and TARGET_AVX256_SPLIT_UNALIGNED_STORE. (STORE_MAX_PIECES): Check TARGET_AVX256_STORE_BY_PIECES instead of TARGET_AVX256_SPLIT_UNALIGNED_STORE. * config/i386/x86-tune.def (X86_TUNE_AVX256_MOVE_BY_PIECES): New. (X86_TUNE_AVX256_STORE_BY_PIECES): Likewise. gcc/testsuite/ PR target/101935 * g++.target/i386/pr80566-1.C: Add -mtune-ctrl=avx256_store_by_pieces. * gcc.target/i386/pr100865-4a.c: Likewise. * gcc.target/i386/pr100865-10a.c: Likewise. * gcc.target/i386/pr90773-20.c: Likewise. * gcc.target/i386/pr90773-21.c: Likewise. * gcc.target/i386/pr90773-22.c: Likewise. * gcc.target/i386/pr90773-23.c: Likewise. * g++.target/i386/pr80566-2.C: Add -mtune-ctrl=avx256_move_by_pieces. * gcc.target/i386/eh_return-1.c: Likewise. * gcc.target/i386/pr90773-26.c: Likewise. * gcc.target/i386/pieces-memcpy-12.c: Replace -mtune=haswell with -mtune-ctrl=avx256_move_by_pieces. * gcc.target/i386/pieces-memcpy-15.c: Likewise. * gcc.target/i386/pieces-memset-2.c: Replace -mtune=haswell with -mtune-ctrl=avx256_store_by_pieces. * gcc.target/i386/pieces-memset-5.c: Likewise. * gcc.target/i386/pieces-memset-11.c: Likewise. * gcc.target/i386/pieces-memset-14.c: Likewise. * gcc.target/i386/pieces-memset-20.c: Likewise. * gcc.target/i386/pieces-memset-23.c: Likewise. * gcc.target/i386/pieces-memset-29.c: Likewise. * gcc.target/i386/pieces-memset-30.c: Likewise. * gcc.target/i386/pieces-memset-33.c: Likewise. * gcc.target/i386/pieces-memset-34.c: Likewise. * gcc.target/i386/pieces-memset-44.c: Likewise. * gcc.target/i386/pieces-memset-37.c: Replace -mtune=generic with -mtune-ctrl=avx256_store_by_pieces.
[Bug target/101935] [12 Regression] 538.imagick_r LTO -Ofast regression on Zen2 and Kabylake caused by r12-2666-g29f0e955c97
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101935 H.J. Lu changed: What|Removed |Added Assignee|unassigned at gcc dot gnu.org |hjl.tools at gmail dot com --- Comment #2 from H.J. Lu --- Created attachment 51359 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=51359&action=edit A patch We are testing this.
[Bug target/101935] [12 Regression] 538.imagick_r LTO -Ofast regression on Zen2 and Kabylake caused by r12-2666-g29f0e955c97
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101935 Martin Liška changed: What|Removed |Added Ever confirmed|0 |1 Last reconfirmed||2021-08-20 Status|UNCONFIRMED |NEW
[Bug target/101935] [12 Regression] 538.imagick_r LTO -Ofast regression on Zen2 and Kabylake caused by r12-2666-g29f0e955c97
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101935 --- Comment #1 from Hongtao.liu --- We can reproduce it on our local znver2 and skylake client.
[Bug target/101935] [12 Regression] 538.imagick_r LTO -Ofast regression on Zen2 and Kabylake caused by r12-2666-g29f0e955c97
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101935 Richard Biener changed: What|Removed |Added Keywords||missed-optimization Target Milestone|--- |12.0
