[Linaro-TCWG-CI] gcc-17-1655-g7d351b07e5b: Failure on aarch64

Dear contributor,

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

In simplebootstrap_build master-aarch64-bootstrap, after:
  | commit gcc-17-1655-g7d351b07e5b
  | Author: Richard Biener <[email protected]>
  | Date:   Wed Jun 17 13:19:56 2026 +0200
  | 
  |     Add vec_deconstruct costing kind
  |     
  |     The following adds vec_decostruct to replace nunits * vec_to_scalar
  |     which allows for more precise costing whenever vectorization
  |     needs to decompose a vector to pieces, like for emulated gather/scatter
  | ... 23 lines of the commit log omitted.

Produces Failure:
  | Results changed to
  | # reset_artifacts:
  | -10
  | # true:
  | 0
  | # build_abe bootstrap:
  | # FAILED
  | # First few build errors in logs:
  | # 00:28:28 /home/tcwg-buildslave/workspace/tcwg_gnu_2/abe/snapshots/gcc.git~master/gcc/config/aarch64/aarch64.cc:18375:10: error: enumeration value ‘vec_deconstruct’ not handled in switch [-Werror=switch]
  | # 00:30:06 make[3]: *** [Makefile:2792: aarch64.o] Error 1
  | # 00:30:06 make[2]: *** [Makefile:5182: all-stage2-gcc] Error 2
  | # 00:30:06 make[1]: *** [Makefile:26490: stage2-bubble] Error 2
  | # 00:30:06 make: *** [Makefile:1140: all] Error 2
  | 
  | From
  | # reset_artifacts:
  | -10
  | # true:
  | 0
  | # build_abe bootstrap:
  | 1

Used configuration :
 *CI config* tcwg_simplebootstrap_build master-aarch64-bootstrap
 *configure and test flags:* none, autodetected on aarch64-unknown-linux-gnu

We track this bug report under https://linaro.atlassian.net/browse/GNU-1936. (Require Linaro login) Please let us know if you have a fix.

If you have any questions regarding this report, please ask on [email protected] mailing list.

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The information below contains the details of the failures, and the ways to reproduce a debug environment:

You can find the failure logs in
 * http://54.172.246.49:9090/jobs/tcwg_simplebootstrap_build--master-aarch64-bootstrap-build/builds/10138/archive/artifacts/
The full lists of regressions and improvements as well as configure and make commands are in
 * http://54.172.246.49:9090/jobs/tcwg_simplebootstrap_build--master-aarch64-bootstrap-build/builds/10138/archive/artifacts/notify/

Current build   : http://54.172.246.49:9090/jobs/tcwg_simplebootstrap_build--master-aarch64-bootstrap-build/builds/10138/archive/artifacts/
Reference build : http://54.172.246.49:9090/jobs/tcwg_simplebootstrap_build--master-aarch64-bootstrap-build/builds/10137/archive/artifacts/

Instruction to reproduce the build : https://gitlab.com/LinaroLtd/tcwg/ci/interesting-commits/-/raw/master/gcc/sha1/7d351b07e5b85c518b5cbe06a6a57cb653911195/tcwg_simplebootstrap_build/master-aarch64-bootstrap/reproduction_instructions.txt

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