[LLVMdev] Greedy Register Allocation in LLVM 3.0

[Carlo Alberto Ferraris]

Il 26/09/2011 16:49, Jakob Stoklund Olesen ha scritto:
> On Sep 26, 2011, at 2:41 AM, 陳韋任 wrote:
>
>>> The greedy allocator is global, but so was the old linear scan allocator.
>>   In http://blog.llvm.org/2011/09/greedy-register-allocation-in-llvm-30.html
>> , it says "The algorithm is local, and it cannot clean up messes that
>> extend beyond a single basic block". Does it mean the rewriter algorithm
>> not the linear scan?
> Yes, exactly.  The rewriter is local.
So, does this mean that different BBs may expect the same spilled value 
to be in different stack slots?
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