Revert "DAGCombine: fold (or (and X, M), (and X, N)) -> (and X, (or M, N))"

It hadn't gone through review yet, but was still on my local copy.

This reverts commit r226663

llvm-svn: 226665

1 files changed, 0 insertions, 11 deletions

diff --git a/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp b/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
index 849508891d3..3bde9918793 100644
--- a/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
@@ -3527,17 +3527,6 @@ SDValue DAGCombiner::visitOR(SDNode *N) {
     }
   }
 
-  // (or (and X, M), (and X, N)) -> (and X, (or M, N))
-  if (N0.getOpcode() == ISD::AND &&
-      N1.getOpcode() == ISD::AND &&
-      N0.getOperand(0) == N1.getOperand(0) &&
-      // Don't increase # computations.
-      (N0.getNode()->hasOneUse() || N1.getNode()->hasOneUse())) {
-    SDValue X = DAG.getNode(ISD::OR, SDLoc(N0), VT,
-                            N0.getOperand(1), N1.getOperand(1));
-    return DAG.getNode(ISD::AND, SDLoc(N), VT, N0.getOperand(0), X);
-  }
-
   // See if this is some rotate idiom.
   if (SDNode *Rot = MatchRotate(N0, N1, SDLoc(N)))
     return SDValue(Rot, 0);