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Re: [PATCH][AArch64] Fix aarch64_ira_change_pseudo_allocno_class
On 29 May 2018 at 19:34, Wilco Dijkstra <Wilco.Dijkstra@arm.com> wrote:
> James Greenhalgh wrote:
>
>> > Add a missing ? to aarch64_get_lane to fix a failure in the testsuite.
>>
>> > I'd prefer more detail than this for a workaround; which test, why did it
>> > start to fail, why is this the right solution, etc.
>
> It was gcc.target/aarch64/vect_copy_lane_1.c generating:
>
> test_copy_laneq_f64:
> umov x0, v1.d[1]
> fmov d0, x0
> ret
>
> For some reason returning a double uses DImode temporaries, so it's essential
> to prefer FP_REGS here and mark the lane copy correctly.
>
> Wilco
>
Hi Wilco,
This has probably been reported elsewhere already but I can't find
such a report, so sorry for possible duplicate,
but this patch is causing ICEs on aarch64
FAIL: gcc.target/aarch64/sve/reduc_1.c -march=armv8.2-a+sve
(internal compiler error)
FAIL: gcc.target/aarch64/sve/reduc_5.c -march=armv8.2-a+sve
(internal compiler error)
and also many scan-assembler regressions:
http://people.linaro.org/~christophe.lyon/cross-validation/gcc/trunk/260951/report-build-info.html
Can you check?
Thanks
Christophe