R600: Fix min/max matching problems with unordered compares

[Matt Arsenault]

> On Nov 28, 2014, at 5:16 PM, Matt Arsenault <arsenm2 at gmail.com> wrote:
> 
> 
>> On Nov 21, 2014, at 5:36 AM, Marek Olšák <maraeo at gmail.com> wrote:
>> 
>> Hi Matt,
>> 
>> I've just tested your patches. They don't fix the bug, but there might
>> be nothing wrong with them, because I think the legacy opcodes
>> themselves are the culprit and switching Mesa to use the mixnum/maxnum
>> intrinsics fixes the issue too.
>> 
>> Marek
>> 
>> On Thu, Nov 20, 2014 at 12:27 AM, Matt Arsenault <arsenm2 at gmail.com> wrote:
>>> These should fix https://bugs.freedesktop.org/show_bug.cgi?id=86432
>>> 
>>> 
>>> 
>>> 
>>> _______________________________________________
>>> llvm-commits mailing list
>>> llvm-commits at cs.uiuc.edu
>>> http://lists.cs.uiuc.edu/mailman/listinfo/llvm-commits
>>> 
> 
> 
> Here are updated patches which include removing isCommutable from the MachineInstrs
> 
> <0001-R600-SI-Don-t-promote-f32-select-to-i32.patch><0002-R600-SI-fmin-fmax_legacy-are-not-associative.patch><0003-R600-Fix-min-max-matching-problems-with-unordered-co.patch>


Rebased

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