[PATCH] [SimplifyCFG] Swap to using TargetTransformInfo for cost analysis.

[James Molloy]

Hi Kristof,

This revision doesn't have any deliberate heuristic changes, so clamp() will not be optimized in this revision to min/max. I've added such a test to http://reviews.llvm.org/D7507, which is where I expect this to happen.

The AArch64 backend does not, at the moment, produce fmin/fmax for this, it produces fcsel. That is an extra improvement we need to make.

Cheers,

James


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http://reviews.llvm.org/D7506

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