[llvm-commits] [llvm] r61405 - /llvm/trunk/lib/CodeGen/SelectionDAG/DAGCombiner.cpp

[Dale Johannesen]

Author: johannes
Date: Tue Dec 23 17:47:22 2008
New Revision: 61405

URL: http://llvm.org/viewvc/llvm-project?rev=61405&view=rev
Log:
Change comments so everybody can understand them, hopefully.


Modified:
    llvm/trunk/lib/CodeGen/SelectionDAG/DAGCombiner.cpp

Modified: llvm/trunk/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/SelectionDAG/DAGCombiner.cpp?rev=61405&r1=61404&r2=61405&view=diff

==============================================================================
--- llvm/trunk/lib/CodeGen/SelectionDAG/DAGCombiner.cpp (original)
+++ llvm/trunk/lib/CodeGen/SelectionDAG/DAGCombiner.cpp Tue Dec 23 17:47:22 2008
@@ -1025,7 +1025,7 @@
     return DAG.getNode(ISD::SUB, VT, N1.getOperand(0),
                        N1.getOperand(1).getOperand(0));
   }
-  // fold (A+((B-A)+-C)) to (B+-C)
+  // fold (A+((B-A)+or-C)) to (B+or-C)
   if ((N1.getOpcode() == ISD::SUB || N1.getOpcode() == ISD::ADD) &&
       N1.getOperand(0).getOpcode() == ISD::SUB &&
       N0 == N1.getOperand(0).getOperand(1)) {
@@ -1178,7 +1178,7 @@
   // fold (A+B)-B -> A
   if (N0.getOpcode() == ISD::ADD && N0.getOperand(1) == N1)
     return N0.getOperand(0); 
-  // fold ((A+(B+-C))-B) -> A+-C
+  // fold ((A+(B+or-C))-B) -> A+or-C
   if (N0.getOpcode() == ISD::ADD &&
       (N0.getOperand(1).getOpcode() == ISD::SUB ||
        N0.getOperand(1).getOpcode() == ISD::ADD) &&