Quentin Colombet bf490d4a32 Loop Strength Reduce: Scaling factor cost. ...

Account for the cost of scaling factor in Loop Strength Reduce when rating the
formulae. This uses a target hook.

The default implementation of the hook is: if the addressing mode is legal, the
scaling factor is free.

<rdar://problem/13806271>

llvm-svn: 183045

2013-05-31 21:29:03 +00:00

17 KiB

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