llvm-6502/test/Transforms/InstCombine/add.ll at c692cb77aaa8b16bcc7fe0c70d47adce94c43911

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Chris Lattner 41dc0fcb68 Teach masked value is zero about add and sub, and use MVIZ to

simplify things like (X & 4) >> 1 == 2  --> (X & 4) == 4.

since it is obvious that the shift doesn't remove any bits.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48631 91177308-0d34-0410-b5e6-96231b3b80d8

2008-03-21 05:19:58 +00:00

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