[llvm-dev] Regression in SPEC2006/gcc caused by LoopLoadElimination

Adam Nemet via llvm-dev
Tue, 08 Mar 2016 07:05:58 -0000

> On Mar 7, 2016, at 9:43 AM, Adam Nemet <anemet at apple.com> wrote:
>
> Hi Haicheng,
>
> Sorry about the breakage.  I reverted it in r262839.
>
> I will try to reproduce it locally.  Please don’t blow away your
directories yet in case I need further help.

OK, I managed to reproduce this locally.  Should be able to make progress from
here without further help from you.

Adam

> Thanks,
> Adam
>
>> On Mar 7, 2016, at 8:33 AM, Haicheng Wu <haicheng at codeaurora.org
<mailto:haicheng at codeaurora.org>> wrote:
>>
>> Hi Adam,
>>
>> I find LoopLoadElimination (r262250) causes SPEC2006/gcc generate wrong
result (166.s) in AArch64 when running with *ref* data set.  The error happens
when I use either “-Ofast -flto -fuse-ld=gold” or “-O3 -fno-strict-aliasing”.
Please let me know if you need more information.
>>
>> Best,
>>
>> Haicheng
>

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