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| author | Dale Johannesen <dalej@apple.com> | 2008-11-27 00:43:21 +0000 |
|---|---|---|
| committer | Dale Johannesen <dalej@apple.com> | 2008-11-27 00:43:21 +0000 |
| commit | 73bc0ba4c965cb83e076cb7f80df3c737c8f1dc0 (patch) | |
| tree | 32a8769adbf1158c1fd254be78cd98812a0a455d /llvm/lib/CodeGen | |
| parent | 1f50dc899fc5521341462c15c36cc4c2055ca78c (diff) | |
| download | bcm5719-llvm-73bc0ba4c965cb83e076cb7f80df3c737c8f1dc0.tar.gz bcm5719-llvm-73bc0ba4c965cb83e076cb7f80df3c737c8f1dc0.zip | |
Add a missing case in visitADD.
llvm-svn: 60137
Diffstat (limited to 'llvm/lib/CodeGen')
| -rw-r--r-- | llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp b/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp index 762fcedc7fb..6b35126a10e 100644 --- a/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp +++ b/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp @@ -1010,6 +1010,9 @@ SDValue DAGCombiner::visitADD(SDNode *N) { // fold (A+(B-A)) -> B if (N1.getOpcode() == ISD::SUB && N0 == N1.getOperand(1)) return N1.getOperand(0); + // fold ((B-A)+A) -> B + if (N0.getOpcode() == ISD::SUB && N1 == N0.getOperand(1)) + return N0.getOperand(0); if (!VT.isVector() && SimplifyDemandedBits(SDValue(N, 0))) return SDValue(N, 0); |
