On Wed, Jul 15, 2026 at 10:10 AM <[email protected]> wrote:
>
> Dear contributor,
>
> Our automatic CI has detected problems related to your patch(es). Please find
> some details below.
>
> In armv8l-unknown-linux-gnueabihf native, after:
> | commit gcc-17-2325-g4302e16581b4
> | Author: Andrew Pinski <[email protected]>
> | Date: Fri Jul 10 16:55:19 2026 -0700
> |
> | vect: Add back testcases for trapping math with comparisons [PR36190]
> |
> | These were originally renamed to no-trapping-math-vect-*.c in
> r0-87196-g04b03edb56633f
> | but were fixed in r0-107313-gf9613c9a919462 but never added back to
> the
> | trapping versions.
> | ... 17 lines of the commit log omitted.
>
> Produces 10 regressions:
> |
> | regressions.sum:
> | Running gcc:gcc.dg/vect/vect.exp ...
> | FAIL: gcc.dg/vect/vect-111.c (test for excess errors)
> | FAIL: gcc.dg/vect/vect-111.c -flto -ffat-lto-objects (test for excess
> errors)
> | FAIL: gcc.dg/vect/vect-ifcvt-12.c (test for excess errors)
> | FAIL: gcc.dg/vect/vect-ifcvt-12.c -flto -ffat-lto-objects (test for
> excess errors)
> | ... and 6 more
FAIL: gcc.dg/vect/vect-111.c (test for excess errors)
Excess errors:
cc1: warning: '-fassociative-math' disabled; other options take precedence
This is caused by an interaction with -ftrapping-math added by the new
testcases and this from check_vect_support_and_set_flags:
```
} elseif [is-effective-target arm_neon_ok] {
eval lappend DEFAULT_VECTCFLAGS [add_options_for_arm_neon ""]
# NEON does not support denormals, so is not used for vectorization by
# default to avoid loss of precision. We must pass -ffast-math to test
# vectorization of float operations.
lappend DEFAULT_VECTCFLAGS "-ffast-math"
if [is-effective-target arm_neon_hw] {
set dg-do-what-default run
} else {
set dg-do-what-default compile
}
```
I am not sure what the best way of solving this. Do we just not test
these testcases on arm neon?
or something else?
>
> Used configuration :
> *CI config* tcwg_gcc_check armv8l-unknown-linux-gnueabihf
> *configure and test flags:* none, autodetected on
> armv8l-unknown-linux-gnueabihf--disable-multilib --with-float=hard
> --with-mode=thumb --with-tune=cortex-a9 --with-arch=armv7-a
> --with-fpu=neon-fp-armv8
>
> We track this bug report under https://linaro.atlassian.net/browse/GNU-1969.
> (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.
>
> -----------------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
> *
> http://54.172.246.49:9090/jobs/tcwg_gcc_check--master-arm-build/builds/10423/archive/artifacts/00-sumfiles/
> The full lists of regressions and improvements as well as configure and make
> commands are in
> *
> http://54.172.246.49:9090/jobs/tcwg_gcc_check--master-arm-build/builds/10423/archive/artifacts/notify/
> The list of [ignored] baseline and flaky failures are in
> *
> http://54.172.246.49:9090/jobs/tcwg_gcc_check--master-arm-build/builds/10423/archive/artifacts/sumfiles/xfails.xfail
>
> Current build :
> http://54.172.246.49:9090/jobs/tcwg_gcc_check--master-arm-build/builds/10423/archive/artifacts/
> Reference build :
> http://54.172.246.49:9090/jobs/tcwg_gcc_check--master-arm-build/builds/10422/archive/artifacts/
>
> Instruction to reproduce the build :
> https://gitlab.com/LinaroLtd/tcwg/ci/interesting-commits/-/raw/master/gcc/sha1/4302e16581b490a196a11de3a54a424f52e27340/tcwg_gcc_check/master-arm/reproduction_instructions.txt
>
> Full commit : See in git+ssh://[email protected]/git/gcc.git
