Dear contributor, Our automatic CI has detected problems related to your patch(es). Please find some details below. In arm-eabi cortex-m33 hard, after: | commit gcc-16-5042-g470411f44f51 | Author: Artemiy Volkov | Date: Sat Nov 1 17:17:15 2025 +0000 | | forwprop: allow subvectors in simplify_vector_constructor () | | This is an attempt to fix | https://gcc.gnu.org/pipermail/gcc-patches/2025-October/697879.html in the | middle-end; the motivation in that patch was to teach gcc to compile: | ... 50 lines of the commit log omitted. Produces 1 regression: | | regressions.sum: | Running gcc:gcc.dg/tree-ssa/tree-ssa.exp ... | FAIL: gcc.dg/tree-ssa/forwprop-43.c scan-tree-dump-times forwprop1 "VEC_PERM_EXPR" 10 Used configuration : *CI config* tcwg_gnu_embed_check_gcc arm-eabi -mthumb -march=armv8-m.main+dsp+fp -mtune=cortex-m33 -mfloat-abi=hard -mfpu=auto *configure and test flags:* --target arm-eabi --disable-multilib --with-mode=thumb --with-cpu=cortex-m33 --with-float=hard --target_board=-mthumb/-march=armv8-m.main+dsp+fp/-mtune=cortex-m33/-mfloat-abi=hard/-mfpu=auto qemu-cpu=cortex-m33 We track this bug report under https://linaro.atlassian.net/browse/GNU-1747. 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 * https://ci.linaro.org/job/tcwg_gnu_embed_check_gcc--master-thumb_m33_hard_eabi-build/633/artifact/artifacts/00-sumfiles/ The full lists of regressions and improvements as well as configure and make commands are in * https://ci.linaro.org/job/tcwg_gnu_embed_check_gcc--master-thumb_m33_hard_eabi-build/633/artifact/artifacts/notify/ The list of [ignored] baseline and flaky failures are in * https://ci.linaro.org/job/tcwg_gnu_embed_check_gcc--master-thumb_m33_hard_eabi-build/633/artifact/artifacts/sumfiles/xfails.xfail Current build : https://ci.linaro.org/job/tcwg_gnu_embed_check_gcc--master-thumb_m33_hard_eabi-build/633/artifact/artifacts Reference build : https://ci.linaro.org/job/tcwg_gnu_embed_check_gcc--master-thumb_m33_hard_eabi-build/632/artifact/artifacts Instruction to reproduce the build : https://gitlab.com/LinaroLtd/tcwg/ci/interesting-commits/-/raw/master/gcc/sha1/470411f44f51d9ef85bfcf3a8f9cb25344dd243f/tcwg_gnu_embed_check_gcc/master-thumb_m33_hard_eabi/reproduction_instructions.txt Full commit : See in git+ssh://linaroci@gcc.gnu.org/git/gcc.git