Promote shifts by a constant to multiplies so that we can reassociate
(x<<1)+(y<<1) -> (X+Y)<<1. This implements Transforms/Reassociate/shift-factor.ll llvm-svn: 26753
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(x<<1)+(y<<1) -> (X+Y)<<1. This implements Transforms/Reassociate/shift-factor.ll llvm-svn: 26753