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Roll back the rest of r126557. It's a hack that will break in some obscure cases.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138130 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Benjamin Kramer 2011-08-19 22:39:31 +00:00
parent 3a244bd8b3
commit deaa64546e
1 changed files with 0 additions and 6 deletions
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6
lib/CodeGen/SelectionDAG/DAGCombiner.cpp
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@ -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(),