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| 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 | ee573fcefc55ca4c672d2991145ada28ee584651 (patch) | |
| tree | 5a5a689f182ddb0a89784ca89e13261d32d7134c /llvm/lib/CodeGen/SelectionDAG | |
| parent | e9988b661da4fcf1602d3031aefbeace838ffdec (diff) | |
| download | bcm5719-llvm-ee573fcefc55ca4c672d2991145ada28ee584651.tar.gz bcm5719-llvm-ee573fcefc55ca4c672d2991145ada28ee584651.zip | |
Change comments so everybody can understand them, hopefully.
llvm-svn: 61405
Diffstat (limited to 'llvm/lib/CodeGen/SelectionDAG')
| -rw-r--r-- | llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp b/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp index fe293742562..bc3117cf0c9 100644 --- a/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp +++ b/llvm/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) && |
