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-16-984-ge322dff09d0
  | Author: Richard Sandiford <richard.sandif...@arm.com>
  | Date:   Fri May 30 09:36:35 2025 +0100
  | 
  |     rtl-ssa: Reject non-address uses of autoinc regs [PR120347]
  |     
  |     As the rtl.texi documentation of RTX_AUTOINC expressions says:
  |     
  |       If a register used as the operand of these expressions is used in
  | ... 69 lines of the commit log omitted.

Produces 8 regressions:
  | 
  | regressions.sum:
  | Running gcc:gcc.dg/torture/dg-torture.exp ...
  | FAIL: gcc.dg/torture/pr120347.c -O0  (test for excess errors)
  | FAIL: gcc.dg/torture/pr120347.c -O1  (test for excess errors)
  | FAIL: gcc.dg/torture/pr120347.c -O2  (test for excess errors)
  | FAIL: gcc.dg/torture/pr120347.c -O2 -flto -fno-use-linker-plugin 
-flto-partition=none  (test for excess errors)
  | ... and 4 more

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-1591. 
Please let us know if you have a fix.

If you have any questions regarding this report, please ask on 
linaro-toolch...@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_m55_hard_eabi-build/847/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/847/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/847/artifact/artifacts/sumfiles/xfails.xfail

Current build   : 
https://ci.linaro.org/job/tcwg_gnu_embed_check_gcc--master-thumb_m55_hard_eabi-build/847/artifact/artifacts
Reference build : 
https://ci.linaro.org/job/tcwg_gnu_embed_check_gcc--master-thumb_m55_hard_eabi-build/846/artifact/artifacts

Instruction to reproduce the build : 
https://gitlab.com/Linaro/tcwg/ci/interesting-commits/-/raw/master/gcc/sha1/e322dff09d011f65f5cae4e95c3a24ccfae7b1e1/tcwg_gnu_embed_check_gcc/master-thumb_m55_hard_eabi/reproduction_instructions.txt

Full commit : See in git+ssh://linar...@gcc.gnu.org/git/gcc.git

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