https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92626
Bug ID: 92626
Summary: Performance regression in compress-rar on CLX server
Product: gcc
Version: 9.2.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: mc_george123 at hotmail dot com
Target Milestone: ---
Created attachment 47329
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=47329&action=edit
rar source code
We found 15% regression in clear 31520 compared to clear 31380 on
compress-rar-1.1.0. The root cause is the update of gcc upstream version from
gcc-9-branch@277298 to gcc-9-branch@277869(clear gcc 9.2.1-691 to 9.2.1-716).
How to run,
phoronix install compress-rar-1.1.0
phoronix run compress-rar
The source code of compress-rar is also attached.
clear CFlags: -g -O3 -feliminate-unused-debug-types -pipe -Wall
-Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector
--param=ssp-buffer-size=32 -Wformat -Wformat-security -m64
-fasynchronous-unwind-tables -Wp,-D_REENTRANT -ftree-loop-distribute-patterns
-Wl,-z -Wl,now -Wl,-z -Wl,relro -fno-semantic-interposition -ffat-lto-objects
-fno-trapping-math -Wl,-sort-common -Wl,--enable-new-dtags -mtune=skylake
