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| author | Evan Cheng <evan.cheng@apple.com> | 2008-03-10 07:59:01 +0000 |
|---|---|---|
| committer | Evan Cheng <evan.cheng@apple.com> | 2008-03-10 07:59:01 +0000 |
| commit | ba0f30fd59e32c2bfb1ce949fa95ebb05f4d65cc (patch) | |
| tree | eb2631ca12551f37e1c5b4c48929e516a7ba9308 /lib | |
| parent | 084a3ee5953b9c75b7d8bf4f5f7f411f9f1cb77f (diff) | |
| download | external_llvm-ba0f30fd59e32c2bfb1ce949fa95ebb05f4d65cc.zip external_llvm-ba0f30fd59e32c2bfb1ce949fa95ebb05f4d65cc.tar.gz external_llvm-ba0f30fd59e32c2bfb1ce949fa95ebb05f4d65cc.tar.bz2 | |
Doh
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48140 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/CodeGen/SelectionDAG/DAGCombiner.cpp | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/lib/CodeGen/SelectionDAG/DAGCombiner.cpp b/lib/CodeGen/SelectionDAG/DAGCombiner.cpp index 1b00855..3a8c468 100644 --- a/lib/CodeGen/SelectionDAG/DAGCombiner.cpp +++ b/lib/CodeGen/SelectionDAG/DAGCombiner.cpp @@ -1102,12 +1102,13 @@ SDOperand DAGCombiner::visitSUB(SDNode *N) { } // fold (sub x, x) -> 0 - if (N0 == N1) + if (N0 == N1) { if (ISD::isBuildVectorAllZeros(N0.Val)) // Zero vectors might be normalized to a particular vector type to ensure // they are CSE'd. Return it as it is. return N0; return DAG.getConstant(0, N->getValueType(0)); + } // fold (sub c1, c2) -> c1-c2 if (N0C && N1C) return DAG.getNode(ISD::SUB, VT, N0, N1); |