Fix PR tree-optimization/77808, ICE in duplicate_ssa_name_ptr_info, at tree-ssanames.c:630 starting with r240439

Christophe Lyon christophe.lyon@linaro.org
Mon Oct 3 07:05:00 GMT 2016


On 2 October 2016 at 23:05, Doug Gilmore <Doug.Gilmore@imgtec.com> wrote:
> Hi Christophe,
>
>> From: Christophe Lyon [christophe.lyon@linaro.org]
>> Sent: Saturday, October 01, 2016 7:57 AM
>> To: Doug Gilmore
>> Cc: gcc-patches@gcc.gnu.org
>> Subject: Re: Fix PR tree-optimization/77808, ICE in duplicate_ssa_name_ptr_info, at tree-ssanames.c:630 starting with r240439
>>
>> Hi Doug,
>>
>> ...
>> I can confirm that your patch fixes the ICE I was seeing.
>>
>> However, the new testcase does not pass on low end
>> architectures:
>> cc1: warning: -fprefetch-loop-arrays not supported for this target
>> (try -march switches)
>>
>> Can you add a guard?
>>
>> Thanks,
>>
>> Christophe
> I updated the test to only run on X86, MIPS and AARCH64.  Is that OK?
>

I'm afraid not.

The ICE occurred on some arm targets. By "low end" I meant armv5t for
example, as opposed to armv7t.
Is there a suitable effective target?

Thanks,

Christophe

> Thanks,
>
> Doug



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