[llvm-commits] CVS: llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp

[Chris Lattner]

Changes in directory llvm/lib/CodeGen/SelectionDAG:

SelectionDAG.cpp updated: 1.94 -> 1.95
---
Log message:

Fold  (X >  -1) | (Y >  -1)  -->   (X&Y >  -1)



---
Diffs of the changes:  (+3 -1)

 SelectionDAG.cpp |    4 +++-
 1 files changed, 3 insertions(+), 1 deletion(-)


Index: llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
diff -u llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp:1.94 llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp:1.95
--- llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp:1.94	Mon Apr 25 16:20:28 2005
+++ llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp	Mon Apr 25 20:18:33 2005
@@ -1075,8 +1075,10 @@
           if (cast<ConstantSDNode>(LR)->isAllOnesValue()) {
             // (X == -1) & (Y == -1) -> (X&Y == -1)
             // (X != -1) | (Y != -1) -> (X&Y != -1)
+            // (X >  -1) | (Y >  -1) -> (X&Y >  -1)
             if ((Opcode == ISD::AND && Op2 == ISD::SETEQ) ||
-                (Opcode == ISD::OR  && Op2 == ISD::SETNE))
+                (Opcode == ISD::OR  && Op2 == ISD::SETNE) ||
+                (Opcode == ISD::OR  && Op2 == ISD::SETGT))
               return getSetCC(Op2, VT,
                             getNode(ISD::AND, LR.getValueType(), LL, RL), LR);
             // (X >  -1) & (Y >  -1) -> (X|Y > -1)