[Linaro-TCWG-CI] gcc-15-2429-gd63b6d8b4944: FAIL: 11 regressions: 11 improvements on master-thumb_m55_hard_eabi

[Linaro-TCWG-CI] gcc-15-2429-gd63b6d8b4944: FAIL: 11 regressions: 11 improvements on master-thumb_m55_hard_eabi

[ci_notify]

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Dear contributor, our automatic CI has detected problems related to your patch(es).  Please find some details below.  If you have any questions, please follow up on linaro-toolchain@lists.linaro.org mailing list, Libera's #linaro-tcwg channel, or ping your favourite Linaro toolchain developer on the usual project channel.

We appreciate that it might be difficult to find the necessary logs or reproduce the issue locally. If you can't get what you need from our CI within minutes, let us know and we will be happy to help.

We track this report status in https://linaro.atlassian.net/browse/GNU-1320 , please let us know if you are looking at the problem and/or when you have a fix.

In  arm-eabi cortex-m55 hard after:

  | commit gcc-15-2429-gd63b6d8b4944
  | Author: Richard Sandiford <richard.sandiford@arm.com>
  | Date:   Wed Jul 31 09:23:35 2024 +0100
  | 
  |     recog: Disallow subregs in mode-punned value [PR115881]
  |     
  |     In g:9d20529d94b23275885f380d155fe8671ab5353a, I'd extended
  |     insn_propagation to handle simple cases of hard-reg mode punning.
  |     The punned "to" value was created using simplify_subreg rather
  |     than simplify_gen_subreg, on the basis that hard-coded subregs
  |     aren't generally useful after RA (where hard-reg propagation is
  | ... 29 lines of the commit log omitted.

FAIL: 11 regressions: 11 improvements

regressions.sum:
		=== g++ tests ===

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)
FAIL: g++.dg/opt/pr79734.C -std=gnu++26 (internal compiler error: in extract_insn, at recog.cc:2869)
FAIL: g++.dg/opt/pr79734.C -std=gnu++98 (internal compiler error: in extract_insn, at recog.cc:2869)
FAIL: g++.dg/tree-ssa/pr111150.C -std=gnu++17 (internal compiler error: in extract_insn, at recog.cc:2869)
... and 10 more entries

improvements.sum:
		=== g++ tests ===

Running g++:g++.dg/dg.exp ...
FAIL: c-c++-common/vector-compare-3.c -std=gnu++26 (internal compiler error: in extract_insn, at recog.cc:2848)
FAIL: c-c++-common/vector-compare-3.c -std=gnu++98 (internal compiler error: in extract_insn, at recog.cc:2848)
FAIL: c-c++-common/vector-compare-3.c -std=gnu++17 (internal compiler error: in extract_insn, at recog.cc:2848)
FAIL: g++.dg/opt/pr79734.C -std=gnu++17 (internal compiler error: in extract_insn, at recog.cc:2848)
FAIL: g++.dg/opt/pr79734.C -std=gnu++98 (internal compiler error: in extract_insn, at recog.cc:2848)
FAIL: g++.dg/opt/pr79734.C -std=gnu++26 (internal compiler error: in extract_insn, at recog.cc:2848)
FAIL: g++.dg/tree-ssa/pr111150.C -std=gnu++26 (internal compiler error: in extract_insn, at recog.cc:2848)
... and 10 more entries

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/550/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/550/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/550/artifact/artifacts/sumfiles/xfails.xfail

The configuration of this build is:
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

-----------------8<--------------------------8<--------------------------8<--------------------------
The information below can be used to reproduce a debug environment:

Current build   : https://ci.linaro.org/job/tcwg_gnu_embed_check_gcc--master-thumb_m55_hard_eabi-build/550/artifact/artifacts
Reference build : https://ci.linaro.org/job/tcwg_gnu_embed_check_gcc--master-thumb_m55_hard_eabi-build/549/artifact/artifacts

Reproduce last good and first bad builds: https://git-us.linaro.org/toolchain/ci/interesting-commits.git/plain/gcc/sha1/d63b6d8b494483b0049370ff0dfeee0e1d10e54b/tcwg_gnu_embed_check_gcc/master-thumb_m55_hard_eabi/reproduction_instructions.txt

Full commit : https://github.com/gcc-mirror/gcc/commit/d63b6d8b494483b0049370ff0dfeee0e1d10e54b

List of configurations that regressed due to this commit :
* tcwg_gnu_embed_check_gcc
** master-thumb_m55_hard_eabi
*** FAIL: 11 regressions: 11 improvements
*** https://git-us.linaro.org/toolchain/ci/interesting-commits.git/plain/gcc/sha1/d63b6d8b494483b0049370ff0dfeee0e1d10e54b/tcwg_gnu_embed_check_gcc/master-thumb_m55_hard_eabi/details.txt
*** https://ci.linaro.org/job/tcwg_gnu_embed_check_gcc--master-thumb_m55_hard_eabi-build/550/artifact/artifacts