[llvm-commits] Patch for X86 to use subregs

[Evan Cheng]

On Jul 28, 2007, at 11:55 AM, Christopher Lamb <christopher.lamb at gmail.com 
 > wrote:

>
> On Jul 28, 2007, at 2:08 AM, Evan Cheng wrote:
>
>>
>> On Jul 28, 2007, at 12:17 AM, Christopher Lamb wrote:
>>
>>> This patch changes the X86 back end to use the new subreg  
>>> operations for appropriate truncate and extend operations. This  
>>> should allow regression testing of the subreg feature going  
>>> forward, as it's now used in a public target.
>>>
>>> The patch passed DejaGnu and all of SingleSource on my x86  
>>> machine, but there are changes for x86-64 as well which I
>>
>> BTW, please make sure all of MultiSource pass.
>
> Ok.
>
>> Also, if it is possible, can you split out the x86-64 as a follow  
>> on patch?
>
> It's a bit more work, but I think it'd be possible.

Thx.

Evan

>
>> Evan
>>
>>> haven't been able to test. Output assembly for x86-64 appears  
>>> sane, but I'd appreciate someone giving the patch a try on their  
>>> x86-64 system. Other 32-bit x86 testing is also appreciated.
>>>
>>> Thanks
>>> --
>>> Christopher Lamb
>>>
>>> <x86_subregs.patch>
>>>
>>>
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>>
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>
> --
> Christopher Lamb
>
>
>
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