https://gcc.gnu.org/bugzilla/show_bug.cgi?id=127564
Bug ID: 127564
Summary: [Linaro-TCWG-CI] gcc-17-4551-geb311f86125: 3
regressions on arm
Product: gcc
Version: 17.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: liuhongt at gcc dot gnu.org
Target Milestone: ---
Our automatic CI has detected problems related to your patch(es). Please find
some details below.
In armv8l-unknown-linux-gnueabihf native, after:
| commit gcc-17-4551-geb311f86125
| Author: liuhongt <[email protected]>
| Date: Tue Aug 4 01:55:18 2026 -0700
|
| tree-optimization/126486 - fold sign-changing conversions in IVOPTS
|
| r15-6657 canonicalized signed arithmetic to unsigned and exposed a
| 17.5% code-size regression at -O2 in SPEC CPU2017 507.cactuBSSN_r.
| The resulting conversion chains hide common outer-loop IV terms from
| ... 52 lines of the commit log omitted.
Produces 3 regressions:
|
| regressions.sum:
| Running gcc:gcc.target/arm/mve/mve.exp ...
| XPASS: gcc.target/arm/mve/dlstp-compile-asm-3.c scan-assembler letp
| FAIL: gcc.target/arm/mve/dlstp-invalid-asm.c scan-assembler-not \tdlstp
| FAIL: gcc.target/arm/mve/dlstp-invalid-asm.c scan-assembler-not \tletp
Used configuration :
*CI config* tcwg_gcc_check armv8l-unknown-linux-gnueabihf *configure and test
flags:* none, autodetected on armv8l-unknown-linux-gnueabihf--disable-multilib
--with-float=hard --with-mode=thumb --with-tune=cortex-a9 --with-arch=armv7-a
--with-fpu=neon-fp-armv8
We track this bug report under https://linaro.atlassian.net/browse/GNU-2046.
(Require Linaro login) Please let us know if you have a fix.
If you have any questions regarding this report, please ask on
[email protected] mailing list.
-----------------8<--------------------------8<--------------------------8<--------------------------
The information below contains the details of the failures, and the ways to
reproduce a debug environment:
You can find the failure logs in *.log.1.xz files in
*
http://54.172.246.49:9090/jobs/tcwg_gcc_check--master-arm-build/builds/10698/archive/artifacts/00-sumfiles/
The full lists of regressions and improvements as well as configure and make
commands are in
*
http://54.172.246.49:9090/jobs/tcwg_gcc_check--master-arm-build/builds/10698/archive/artifacts/notify/
The list of [ignored] baseline and flaky failures are in
*
http://54.172.246.49:9090/jobs/tcwg_gcc_check--master-arm-build/builds/10698/archive/artifacts/sumfiles/xfails.xfail
Current build :
http://54.172.246.49:9090/jobs/tcwg_gcc_check--master-arm-build/builds/10698/archive/artifacts/
Reference build :
http://54.172.246.49:9090/jobs/tcwg_gcc_check--master-arm-build/builds/10697/archive/artifacts/
Instruction to reproduce the build :
https://gitlab.com/LinaroLtd/tcwg/ci/interesting-commits/-/raw/master/gcc/sha1/eb311f861255ae1fcaafa3454d4d1d6f1da07497/tcwg_gcc_check/master-arm/reproduction_instructions.txt
Full commit : See in git+ssh://[email protected]/git/gcc.git
