[PATCH] [PowerPC, Darwin] fix for PR15821

[David Fang]

Hi Bill,

>> For powerpc-darwin8, I have:
>> .machine ppc7400
>>
>> For powerpc64-darwin8, I have:
>> .machine ppc64
>>
>
> Hm.  Using -mcpu=g4 (PowerPC 7400) gives me the code generation expected
> by your DARWIN32 checks, so that's progress.  However, I can't get the
> proper 64-bit code gen yet.  Using either -mcpu=ppc64 or -mcpu=g5 gives
> me the attached assembly results, using current trunk to build llc.  Any
> ideas why I see the differences?

What svn/git version of llvm/clang are you using?
I'm on the powerpc-darwin8 branch, which last merged from trunk at 
r180675.  There shouldn't be anything on my branch that touches powerpc64 
codegen.  Let me know if you're using a more recent trunk build, and I'll 
re-merge to that revision.

Fang


>> Fang
>>
>>> (If you're unsure, run llc from the command line and look for
>>> the .machine directive in the generated assembly file.)
>>>
>>> Thanks,
>>> Bill
>>>
>>>>
>>>> Thanks,
>>>> Bill
>>>>
>>>> On Wed, 2013-05-01 at 17:08 -0400, David Fang wrote:
>>>>> Hi,
>>>>>
>>>>> Attached is a patch for PR 15821, which fixes PowerPC CodeGen on Darwin.
>>>>> It re-applies the same patch from PR 14779, and adds a test for darwin8,
>>>>> targeting ppc32 and ppc64.
>>>>>
>>>>> http://llvm.org/bugs/show_bug.cgi?id=15821
>>>>> https://github.com/fangism/llvm/commit/d27de53554abf4443ad386ea451991e4ef32f9ae
>>>>>
>>>>> Some PPC maintainers have already commented in the thread.
>>>>> Please review and commit on my behalf.
>>>>> Thanks.
>>>>>
>>>>> Fang
>>>>>
>>>>> _______________________________________________
>>>>> llvm-commits mailing list
>>>>> llvm-commits at cs.uiuc.edu
>>>>> http://lists.cs.uiuc.edu/mailman/listinfo/llvm-commits
>>>
>>
>

-- 
David Fang
http://www.csl.cornell.edu/~fang/