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Re: [PATCH testsuite]XFAIL gcc.dg/tree-ssa/pr71347 on some targets
On Thu, Jul 14, 2016 at 6:14 PM, Jeff Law <law@redhat.com> wrote:
> On 07/14/2016 10:11 AM, Bin Cheng wrote:
>>
>> Hi, Test gcc.dg/tree-ssa/pr71347 failed on some targets if the two
>> memory references are re-written into different forms by IVOPT. This
>> could be because of various reasons, for example, auto-increment
>> addressing mode. Since the address expressions are of different
>> form, DOM fails to eliminate the redundant load at the moment. I
>> think DOM should be improved to handle address expressions appearing
>> in different forms (at least for simple cases). For now, I will
>> XFAIL this test indicating a possible enhancement.
>
> FWIW, Adam Lawrence did some work in this area a few months ago. Essentially
> enhancing DOM to be able to detect certain MEM_REF and ARRAY_REF accesses
> were in fact equivalent.
Hi Jeff,
Do you recall any PR/patch of this? I didn't find it in mail searching.
>
>
>>
>> Test checked on affected targets. Is it OK?
Applied.
Thanks,
bin
>
> Yes. This is fine.
> jeff
>