commit 7ef167ae1f41c692688fd357e2aa2fa13ad93426
author Karthik Bhat <kv.bhat@samsung.com> Wed Aug 13 05:13:14 2014 +0000
committer Karthik Bhat <kv.bhat@samsung.com> Wed Aug 13 05:13:14 2014 +0000
tree 8eec82f2b94d7718211990e3b42ad080be949c8d
parent 59ee88d574815844b39d630ff1d8afccf2e8ee84

InstCombine: Combine (xor (or %a, %b) (xor %a, %b)) to (add %a, %b)

Correctness proof of the transform using CVC3-

$ cat t.cvc
A, B : BITVECTOR(32);
QUERY BVXOR(A | B, BVXOR(A,B) ) = A & B;

$ cvc3 t.cvc
Valid.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@215524 91177308-0d34-0410-b5e6-96231b3b80d8