Changes

Summary

1. [InstCombine] Don't use AddOne/SubOne to see if two APInts are 1 apart. Use APInt operations instead. NFCI AddOne/SubOne create new Constant objects. That seems heavy for comparing ConstantInts which wrap APInts. Just do the math on on the APInts and compare them.

Revision 366648 by ctopper: [InstCombine] Don't use AddOne/SubOne to see if two APInts are 1 apart. Use APInt operations instead. NFCI AddOne/SubOne create new Constant objects. That seems heavy for comparing ConstantInts which wrap APInts. Just do the math on on the APInts and compare them.
Change Type	Path in Repository	Path in Workspace
	/llvm/trunk/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp (diff)	llvm.src/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp