[llvm-commits] Patches to build EFI with clang/llvm

[Carl Norum]

On Jan 25, 2011, at 4:32 PM, Jakob Stoklund Olesen wrote:

> 
> On Jan 25, 2011, at 1:47 PM, Carl Norum wrote:
> 
>> 
>> I've attached some patches to LLVM for review.  We're currently using these patches to build EFI boot ROMs on Mac OS X using clang/llvm.  The biggest change there is putting Windows ABI code into Mach-O objects.  The patch should apply cleanly to r124214 or later - hopefully nothing's gotten in the way so far!
>> 
>> Questions/comments/suggestions much appreciated!
> 
> Thanks, Carl.
> 
> Could you separate the Mach-O related changes from the Win64 tail call fixes, please?

I'll see what I can do.

>> +// Register class for scratch registers available for tailcalls and tailjumps.
>> +def ptr_rc_tc : PointerLikeRegClass<2>;
>> +
> 
> The reason for having a dynamic register class was to avoid creating new Windows-specific pseudo-instructions, but you still have a bunch of new WIN* pseudos.
> 
> Takumi recently submitted a patch to do the exact same thing. I think he managed to avoid the new instructions. I think his solution was better, assuming it works for you.

It very well might; I sort of inherited this code, so I'll have to dig around a bit before figuring that all out.  Has that patch gone into TOT, and if not, where can I get it from?

-- Carl

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