diff options
| author | Dale Johannesen <dalej@apple.com> | 2008-12-23 23:47:22 +0000 |
|---|---|---|
| committer | Dale Johannesen <dalej@apple.com> | 2008-12-23 23:47:22 +0000 |
| commit | 7c7bc722ecdeec365074cac4bdb9e2679c02177f (patch) | |
| tree | ed11d0c9177d29c25bd273c229d27968bde42a50 /lib/CodeGen/SelectionDAG/DAGCombiner.cpp | |
| parent | 4c78e0286a1523c40440698e74f5fe2bf5c1f212 (diff) | |
Change comments so everybody can understand them, hopefully.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61405 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/CodeGen/SelectionDAG/DAGCombiner.cpp')
| -rw-r--r-- | lib/CodeGen/SelectionDAG/DAGCombiner.cpp | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/lib/CodeGen/SelectionDAG/DAGCombiner.cpp b/lib/CodeGen/SelectionDAG/DAGCombiner.cpp index fe29374256..bc3117cf0c 100644 --- a/lib/CodeGen/SelectionDAG/DAGCombiner.cpp +++ b/lib/CodeGen/SelectionDAG/DAGCombiner.cpp @@ -1025,7 +1025,7 @@ SDValue DAGCombiner::visitADD(SDNode *N) { 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 @@ SDValue DAGCombiner::visitSUB(SDNode *N) { // 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) && |