Dear contributor,

Our automatic CI has detected problems related to your patch(es). Please find 
some details below.

In  arm-eabi cortex-m55 hard, after:
  | commit gcc-16-3362-g56ca14c4c4f
  | Author: Jeff Law <[email protected]>
  | Date:   Sun Aug 24 19:55:44 2025 -0600
  | 
  |     Fix invalid right shift count with recent ifcvt changes
  |     
  |     I got too clever trying to simplify the right shift computation in my 
recent
  |     ifcvt patch.  Interestingly enough, I haven't seen anything but the 
Linaro CI
  |     configuration actually trip the problem, though the code is clearly 
wrong.
  | ... 23 lines of the commit log omitted.

Produces 2 regressions:
  | 
  | regressions.sum:
  | Running gcc:gcc.target/arm/arm.exp ...
  | FAIL: gcc.target/arm/bics_3.c scan-assembler-times bic\tr[0-9]+, r[0-9]+, 
r[0-9]+ 2
  | FAIL: gcc.target/arm/bics_3.c scan-assembler-times bic\tr[0-9]+, r[0-9]+, 
r[0-9]+, .sl #2 1

Used configuration :
 *CI config* tcwg_gnu_embed_check_gcc arm-eabi -mthumb 
-march=armv8.1-m.main+mve.fp+fp.dp -mtune=cortex-m55 -mfloat-abi=hard -mfpu=auto
 *configure and test flags:* --target arm-eabi --disable-multilib 
--with-mode=thumb --with-arch=armv8.1-m.main+mve.fp+fp.dp --with-float=hard 
--target_board=-mthumb/-march=armv8.1-m.main+mve.fp+fp.dp/-mtune=cortex-m55/-mfloat-abi=hard/-mfpu=auto
 qemu-cpu=cortex-m55

We track this bug report under https://linaro.atlassian.net/browse/GNU-1666. 
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
 * 
https://ci.linaro.org/job/tcwg_gnu_embed_check_gcc--master-thumb_m55_hard_eabi-build/944/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_m55_hard_eabi-build/944/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_m55_hard_eabi-build/944/artifact/artifacts/sumfiles/xfails.xfail

Current build   : 
https://ci.linaro.org/job/tcwg_gnu_embed_check_gcc--master-thumb_m55_hard_eabi-build/944/artifact/artifacts
Reference build : 
https://ci.linaro.org/job/tcwg_gnu_embed_check_gcc--master-thumb_m55_hard_eabi-build/942/artifact/artifacts

Instruction to reproduce the build : 
https://gitlab.com/LinaroLtd/tcwg/ci/interesting-commits/-/raw/master/gcc/sha1/56ca14c4c4fa2279ff80b44b495d375c42795598/tcwg_gnu_embed_check_gcc/master-thumb_m55_hard_eabi/reproduction_instructions.txt

Full commit : See in git+ssh://[email protected]/git/gcc.git

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