[Linaro-TCWG-CI] gcc-16-6766-g96bc77e45c20: 2 regressions on aarch64

ci_notify--- via Gcc-regression <[email protected]>
Newsgroups gmane.comp.gcc.regression
Message-ID <[email protected]>
Dear contributor,

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

In gcc_check master-aarch64, after:
  | commit gcc-16-6766-g96bc77e45c20
  | Author: Richard Biener <[email protected]>
  | Date:   Wed Jan 14 10:53:05 2026 +0100
  | 
  |     tree-optimization/123190 - allow VF == 1 epilog vectorization
  |     
  |     The following adjusts the condition where we reject vectorization
  |     because the scalar loop runs only for a single iteration (or two,
  |     in case we need to peel for gaps).  Because this is over-eager
  | ... 17 lines of the commit log omitted.

Produces 2 regressions:
  | 
  | regressions.sum:
  | Running gcc:gcc.dg/vect/complex/complex.exp ...
  | FAIL: gcc.dg/vect/complex/fast-math-complex-add-pattern-half-float.c -flto -ffat-lto-objects  scan-tree-dump-times vect "add new stmt: [^\n\r]*COMPLEX_ADD_ROT90" 3
  | FAIL: gcc.dg/vect/complex/fast-math-complex-add-pattern-half-float.c scan-tree-dump-times vect "add new stmt: [^\n\r]*COMPLEX_ADD_ROT90" 3

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

We track this bug report under https://linaro.atlassian.net/browse/GNU-1817. 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 *.log.1.xz files in
 * https://ci.linaro.org/job/tcwg_gcc_check--master-aarch64-build/4600/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_gcc_check--master-aarch64-build/4600/artifact/artifacts/notify/
The list of [ignored] baseline and flaky failures are in
 * https://ci.linaro.org/job/tcwg_gcc_check--master-aarch64-build/4600/artifact/artifacts/sumfiles/xfails.xfail

Current build   : https://ci.linaro.org/job/tcwg_gcc_check--master-aarch64-build/4600/artifact/artifacts
Reference build : https://ci.linaro.org/job/tcwg_gcc_check--master-aarch64-build/4599/artifact/artifacts

Instruction to reproduce the build : https://gitlab.com/LinaroLtd/tcwg/ci/interesting-commits/-/raw/master/gcc/sha1/96bc77e45c202303b87647a44206c6475f996c5c/tcwg_gcc_check/master-aarch64/reproduction_instructions.txt

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