[llvm-dev] Enabling EarlyCSE w/ MemorySSA by default

[Nemanja Ivanovic via llvm-dev]

For what it's worth, I just ran this on PowerPC and a double bootstrap with
lit and lnt tests passes everything.

On Sun, Jun 11, 2017 at 12:38 AM, Zhendong Su via llvm-dev <
llvm-dev at lists.llvm.org> wrote:

> Sure, we are happy to start some testing to see what we may help find.
>
> On Sat, Jun 10, 2017 at 3:36 PM, Daniel Berlin <dberlin at dberlin.org>
> wrote:
>
>> +1
>> If possible, it definitely helps to fuzz it.
>>
>>
>> On Sat, Jun 10, 2017 at 2:45 PM, Davide Italiano via llvm-dev <
>> llvm-dev at lists.llvm.org> wrote:
>>
>>> On Sat, Jun 10, 2017 at 8:21 AM, Geoff Berry via llvm-dev
>>> <llvm-dev at lists.llvm.org> wrote:
>>> > Hi All,
>>> >
>>> > I'd like to switch the function simplification run of EarlyCSE to use
>>> > MemorySSA by default.  This change has been in tree for a while and
>>> I've
>>> > done benchmark and self-hosting testing on both aarch64 and x86, but I
>>> > wanted to give other folks with different tests/targets a chance to
>>> try this
>>> > out before I flip the switch. I've added an option
>>> '-enable-earlycse-memssa'
>>> > (or '-enable-npm-gvn-hoist' if you're using the new pass manager) that
>>> you
>>> > can be used to test this change out.
>>> >
>>>
>>> Not that I don't trust your self-hosting test strategy, but other
>>> passes (e.g. GVNHoist or NewGVN) showed us that's not quite enough to
>>> declare victory. I'll be much more confident if we can do at least a
>>> round of fuzzing.
>>>
>>> Thanks,
>>>
>>> --
>>> Davide
>>> _______________________________________________
>>> LLVM Developers mailing list
>>> llvm-dev at lists.llvm.org
>>> http://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-dev
>>>
>>
>>
> --
> Zhendong Su, Professor
> Chancellor's Fellow
> UC Davis
>
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>
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