[arm/testsuite]: Skip pr97969.c if -mthumb is not compatible [PR target/97969]

[Richard Earnshaw]

On 02/03/2021 18:10, Christophe Lyon wrote:
> On Tue, 2 Mar 2021 at 17:25, Richard Earnshaw
> <Richard.Earnshaw@foss.arm.com> wrote:
>>
>> On 02/03/2021 16:19, Richard Earnshaw via Gcc-patches wrote:
>>> On 01/03/2021 15:26, Christophe Lyon via Gcc-patches wrote:
>>>> Ping?
>>>>
>>>> On Wed, 3 Feb 2021 at 10:01, Christophe Lyon <christophe.lyon@linaro.org> wrote:
>>>>>
>>>>> Ping?
>>>>> I guess that's obvious enough?
>>>>>
>>>>> On Wed, 27 Jan 2021 at 10:03, Christophe Lyon
>>>>> <christophe.lyon@linaro.org> wrote:
>>>>>>
>>>>>> Depending on how the toolchain is configured or how the testsuite is
>>>>>> executed, -mthumb may not be compatible. Like for other tests, skip
>>>>>> pr97969.c in this case.
>>>>>>
>>>>>> For instance arm-linux-gnueabihf and -march=armv5t in RUNTESTFLAGS.
>>>>>>
>>>>>> 2021-01-27  Christophe Lyon  <christophe.lyon@linaro.org>
>>>>>>
>>>>>> gcc/testsuite/
>>>>>> PR target/97969
>>>>>> * gcc.target/arm/pr97969.c: Skip if thumb mode is not available.
>>>>>>
>>>>>> diff --git a/gcc/testsuite/gcc.target/arm/pr97969.c
>>>>>> b/gcc/testsuite/gcc.target/arm/pr97969.c
>>>>>> index 714a1d1..0b5d07f 100644
>>>>>> --- a/gcc/testsuite/gcc.target/arm/pr97969.c
>>>>>> +++ b/gcc/testsuite/gcc.target/arm/pr97969.c
>>>>>> @@ -1,4 +1,5 @@
>>>>>>  /* { dg-do compile } */
>>>>>> +/* { dg-skip-if "" { ! { arm_thumb1_ok || arm_thumb2_ok } } } */
>>>>>>  /* { dg-options "-std=c99 -fno-omit-frame-pointer -mthumb -w -Os" } */
>>>>>>
>>>>>>  typedef a[23];
>>>
>>> I'm working on a patch to make this sort of change unnecessary (I hope).
>>>  Just running some final checks.
>>>
>>> R.
>>>
>>
>> Ah, wait.  This one already has an explicit -mthumb, so my patch won't
>> affect this.  But why is -mthumb needed for this test anyway?  It's just
>> a compilation test, so why not drop that and we'll generally get better
>> coverage all round.
>>
> 
> For instance I see the test fail for target arm-none-linux-gnueabihf
> --with-mode arm --with-cpu cortex-a9 --with-fpu vfp
> and running the tests with -march=armv5t
> 
> We get the famous thumb-1 + hard-float ABI not supported.
> 
> I guess -mthumb is inherited from the bug report?
> 
> Christophe
> 

dropping the -mthumb should fix that though?

In fact, I'd drop -Os as well, it's not needed as -Os is just one of the
many options that are used to build this test already.

R.