[llvm] r207301 - [X86] Implement TargetLowering::getScalingFactorCost hook.

[Chandler Carruth]

On Fri, Apr 25, 2014 at 6:11 PM, Quentin Colombet <qcolombet at apple.com>wrote:

> [X86] Implement TargetLowering::getScalingFactorCost hook.
> Scaling factors are not free on X86 because every "complex" addressing mode
> breaks the related instruction into 2 allocations instead of 1.
>

I have no idea what you mean by "allocations" here.

Also, benchmarks?
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