[llvm-commits] [llvm] r122596 - /llvm/trunk/lib/CodeGen/StrongPHIElimination.cpp

[Cameron Zwarich]

On Dec 28, 2010, at 1:28 PM, Jakob Stoklund Olesen wrote:

> On Dec 28, 2010, at 1:03 PM, Cameron Zwarich wrote:
> 
>> What's the format of variadic instructions? Wouldn't all of the explicit defs appear at the front?
> 
> No, they look like:
> 
>  <fixed defs>, <fixed uses>, <variadic ops...>, <implicit ops>
> 
> The variadic operands can be uses or defs. For instance, ARM's LDM instructions have a variable number of defs.

Ah, okay. I could check whether the instruction is variadic before bailing out early after the last explicit def, but maybe I should just roll it out for now. 28% is a nice speedup though. ;-)

Cameron
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