On 20/11/2023 10:23, Christophe Lyon wrote:
Hi Richard,
On Mon, 13 Nov 2023 at 15:28, Richard Earnshaw <rearn...@arm.com> wrote:
A number of tests in the gcc testsuite, especially for arm-specific
targets, add various flags to control the architecture. These run
into problems when the compiler is configured with -mfpu=auto if the
new architecture lacks an architectural feature that implies we have
floating-point instructions.
The testsuite makes this worse as it falls foul of this requirement in
the base architecture strings provided by target-supports.exp.
To fix this we add "+fp", or something equivalent to this, to all the
base architecture specifications. The feature will be ignored if the
float ABI is set to soft.
gcc/testsuite:
* lib/target-supports.exp (check_effective_target_arm_arch_FUNC_ok):
Add base FPU specifications to all architectures that can support
one.
---
gcc/testsuite/lib/target-supports.exp | 50 +++++++++++++--------------
1 file changed, 25 insertions(+), 25 deletions(-)
Our CI has detected some regressions with this patch, in particular
when testing for cortex-m55:
with
-mthumb/-march=armv8.1-m.main+mve.fp+fp.dp/-mtune=cortex-m55/-mfloat-abi=hard/-mfpu=auto
and GCC configured with --disable-multilib --with-mode=thumb
--with-arch=armv8.1-m.main+mve.fp+fp.dp --with-float=hard
you can see our logs here:
https://ci.linaro.org/job/tcwg_gnu_embed_check_gcc--master-thumb_m55_hard_eabi-build/209/artifact/artifacts/00-sumfiles/
<https://ci.linaro.org/job/tcwg_gnu_embed_check_gcc--master-thumb_m55_hard_eabi-build/209/artifact/artifacts/00-sumfiles/>
Thanks,
Christophe
What exactly am I supposed to be looking at here? I see no description
of what those logs represent. If they are supposed to be before and
after, then why does the after only run a tiny fraction of the testsuite
(Running gcc.git~master/gcc/testsuite/gcc.target/arm/arm.exp ...
Running gcc.git~master/gcc/testsuite/gcc.target/arm/cmse/cmse.exp ...
Running gcc.git~master/gcc/testsuite/gcc.target/arm/lto/lto.exp ...)
The logs give no clue as to why the reminder of the testsuite wasn't run.
Please don't make me guess.
R.
