Dear contributor, Our automatic CI has detected problems related to your patch(es). Please find some details below. In aarch64 native, after: | commit gcc-17-466-g8b97248edd8 | Author: Lili Cui | Date: Tue May 12 10:00:00 2026 -0700 | | [PATCH 1/2] tree-optimization/vect: Allow commutative operand swap for IFN in SLP reduction | | In vect_build_slp_tree_1, when checking whether reduction operands at | different positions can be swapped, only tree_code operations (e.g. | PLUS_EXPR) were recognized as commutative. Internal functions produced | ... 23 lines of the commit log omitted. Produces 2 regressions: | | regressions.sum: | Running gcc:gcc.dg/vect/vect.exp ... | FAIL: gcc.dg/vect/slp-reduc-15.c (test for excess errors) | FAIL: gcc.dg/vect/slp-reduc-15.c -flto -ffat-lto-objects (test for excess errors) Used configuration : *CI config* tcwg_gcc_check aarch64-linux-gnu *configure and test flags:* none, autodetected on aarch64-unknown-linux-gnu--disable-multilib --enable-fix-cortex-a53-835769 --enable-fix-cortex-a53-843419 --with-arch=armv8-a We track this bug report under https://linaro.atlassian.net/browse/GNU-1901. Please let us know if you have a fix. If you have any questions regarding this report, please ask on linaro-toolchain@lists.linaro.org 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-aarch64-build/builds/10171/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-aarch64-build/builds/10171/archive/artifacts/notify/ The list of [ignored] baseline and flaky failures are in * http://54.172.246.49:9090/jobs/tcwg_gcc_check--master-aarch64-build/builds/10171/archive/artifacts/sumfiles/xfails.xfail Current build : http://54.172.246.49:9090/jobs/tcwg_gcc_check--master-aarch64-build/builds/10171/archive/artifacts/ Reference build : http://54.172.246.49:9090/jobs/tcwg_gcc_check--master-aarch64-build/builds/10170/archive/artifacts/ Instruction to reproduce the build : https://gitlab.com/LinaroLtd/tcwg/ci/interesting-commits/-/raw/master/gcc/sha1/8b97248edd8f2716d451bfeb369540c0d5338a5d/tcwg_gcc_check/master-aarch64/reproduction_instructions.txt Full commit : See in git+ssh://linaroci@gcc.gnu.org/git/gcc.git