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-15-5443-g387dba05e420
  | Author: Richard Sandiford <richard.sandif...@arm.com>
  | Date:   Tue Nov 19 10:19:24 2024 +0000
  | 
  |     Avoid repeated calls to temporarily_undo_changes [PR117297]
  |     
  |     In an attempt to reduce compile time, rtl-ssa computes the cost
  |     of existing instructions lazily rather than eagerly.  However,
  |     this means that it might need to calculate the cost of an existing
  | ... 40 lines of the commit log omitted.

Produces 11 regressions 11 improvements:
  | Running g++:g++.dg/dg.exp ...
  | FAIL: c-c++-common/vector-compare-3.c -std=gnu++17 (internal compiler 
error: in extract_insn, at recog.cc:2869)
  | FAIL: c-c++-common/vector-compare-3.c -std=gnu++26 (internal compiler 
error: in extract_insn, at recog.cc:2869)
  | FAIL: c-c++-common/vector-compare-3.c -std=gnu++98 (internal compiler 
error: in extract_insn, at recog.cc:2869)
  | FAIL: g++.dg/opt/pr79734.C -std=gnu++17 (internal compiler error: in 
extract_insn, at recog.cc:2869)
  | ... and 9 more
  | Running g++:g++.dg/dg.exp ...
  | FAIL: c-c++-common/vector-compare-3.c -std=gnu++17 (internal compiler 
error: in extract_insn, at recog.cc:2882)
  | FAIL: c-c++-common/vector-compare-3.c -std=gnu++26 (internal compiler 
error: in extract_insn, at recog.cc:2882)
  | FAIL: c-c++-common/vector-compare-3.c -std=gnu++98 (internal compiler 
error: in extract_insn, at recog.cc:2882)
  | FAIL: g++.dg/opt/pr79734.C -std=gnu++98 (internal compiler error: in 
extract_insn, at recog.cc:2882)
  | ... and 9 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-1442. 
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/703/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/703/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/703/artifact/artifacts/sumfiles/xfails.xfail

Current build   : 
https://ci.linaro.org/job/tcwg_gnu_embed_check_gcc--master-thumb_m55_hard_eabi-build/703/artifact/artifacts
Reference build : 
https://ci.linaro.org/job/tcwg_gnu_embed_check_gcc--master-thumb_m55_hard_eabi-build/702/artifact/artifacts

Instruction to reproduce the build : 
https://git-us.linaro.org/toolchain/ci/interesting-commits.git/plain/gcc/sha1/387dba05e4207fc3f9a2f2bcb09a343a999c76fc/tcwg_gnu_embed_check_gcc/master-thumb_m55_hard_eabi/reproduction_instructions.txt

Full commit : 
https://gcc.gnu.org/git/?p=gcc.git;a=commitdiff;h=387dba05e4207fc3f9a2f2bcb09a343a999c76fc

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