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| author | Benjamin Kramer <benny.kra@googlemail.com> | 2011-08-19 22:39:31 +0000 |
|---|---|---|
| committer | Benjamin Kramer <benny.kra@googlemail.com> | 2011-08-19 22:39:31 +0000 |
| commit | deaa64546ea1d0922aa4671a05f13be3d7c9d53c (patch) | |
| tree | 13134b840dd3d8dc1d2e9ef40f89b56c18cd4123 /lib/CodeGen/SelectionDAG/DAGCombiner.cpp | |
| parent | 3a244bd8b335a8747dd032ad1f6b187415ad6958 (diff) | |
Roll back the rest of r126557. It's a hack that will break in some obscure cases.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138130 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/CodeGen/SelectionDAG/DAGCombiner.cpp')
| -rw-r--r-- | lib/CodeGen/SelectionDAG/DAGCombiner.cpp | 6 |
1 files changed, 0 insertions, 6 deletions
diff --git a/lib/CodeGen/SelectionDAG/DAGCombiner.cpp b/lib/CodeGen/SelectionDAG/DAGCombiner.cpp index 51aca66eef..1d17473b46 100644 --- a/lib/CodeGen/SelectionDAG/DAGCombiner.cpp +++ b/lib/CodeGen/SelectionDAG/DAGCombiner.cpp @@ -1526,12 +1526,6 @@ SDValue DAGCombiner::visitADDE(SDNode *N) { ConstantSDNode *N0C = dyn_cast<ConstantSDNode>(N0); ConstantSDNode *N1C = dyn_cast<ConstantSDNode>(N1); - // If both operands are null we know that carry out will always be false. - if (N0C && N0C->isNullValue() && N0 == N1) - DAG.ReplaceAllUsesOfValueWith(SDValue(N, 1), DAG.getNode(ISD::CARRY_FALSE, - N->getDebugLoc(), - MVT::Glue)); - // canonicalize constant to RHS if (N0C && !N1C) return DAG.getNode(ISD::ADDE, N->getDebugLoc(), N->getVTList(), |