On Wed, Jan 21, 2026 at 5:50 AM ci_notify@linaro.org wrote:
Dear contributor,
Our automatic CI has detected problems related to your patch(es). Please find some details below.
In arm-eabi cortex-m23 soft, after: | commit gcc-16-5975-gfae0c626250 | Author: Andrew Pinski andrew.pinski@oss.qualcomm.com | Date: Sat Dec 6 01:11:29 2025 -0800 | | final_cleanup: Call make_forwarders_with_degenerate_phis [PR46555] | | This fixes a regression introduced with r16-5258-g1d8e2d51e5c5cb. | With GCC 12+, we would not merge forwarders (with phis, vops included), | this meant that after the last cddce, degenerate phis would stay not | ... 22 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/pr46555.c scan-rtl-dump pro_and_epilogue "Performing shrink-wrapping"
Used configuration : *CI config* tcwg_gnu_embed_check_gcc arm-eabi -mthumb -march=armv8-m.base -mtune=cortex-m23 -mfloat-abi=soft -mfpu=auto *configure and test flags:* --target arm-eabi --disable-multilib --with-mode=thumb --with-cpu=cortex-m23 --with-float=soft --target_board=-mthumb/-march=armv8-m.base/-mtune=cortex-m23/-mfloat-abi=soft/-mfpu=auto qemu_cpu=cortex-m33
We track this bug report under https://linaro.atlassian.net/browse/GNU-1819. Please let us know if you have a fix.
Filed https://gcc.gnu.org/bugzilla/show_bug.cgi?id=123751 and fixed in r16-6969-g41878c161c480.
Thanks, Andrew
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
The full lists of regressions and improvements as well as configure and make commands are in
The list of [ignored] baseline and flaky failures are in
Current build : https://ci.linaro.org/job/tcwg_gnu_embed_check_gcc--master-thumb_m23_soft_ea... Reference build : https://ci.linaro.org/job/tcwg_gnu_embed_check_gcc--master-thumb_m23_soft_ea...
Instruction to reproduce the build : https://gitlab.com/LinaroLtd/tcwg/ci/interesting-commits/-/raw/master/gcc/sh...
Full commit : See in git+ssh://linaroci@gcc.gnu.org/git/gcc.git
linaro-toolchain@lists.linaro.org
-
Andrew Pinski