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don't add nodes to the now-dead nodes list multiple times, this
author
Chris Lattner
<sabre@nondot.org>
Sun, 28 Mar 2010 05:28:31 +0000
(
05:28
+0000)
committer
Chris Lattner
<sabre@nondot.org>
Sun, 28 Mar 2010 05:28:31 +0000
(
05:28
+0000)
can cause a crash on crazy situations in msp430 when morph-node-to
is disabled.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99739
91177308
-0d34-0410-b5e6-
96231b3b80d8
lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
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diff --git
a/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
b/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
index 600557eddfdd20ddb071edb78cf3417132b31cac..3981826f59aa1f8ab112e34558b0f227b962c4ef 100644
(file)
--- a/
lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
+++ b/
lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
@@
-1592,8
+1592,9
@@
UpdateChainsAndFlags(SDNode *NodeToMatch, SDValue InputChain,
assert(ChainVal.getValueType() == MVT::Other && "Not a chain?");
CurDAG->ReplaceAllUsesOfValueWith(ChainVal, InputChain, &ISU);
- // If the node became dead, delete it.
- if (ChainNode->use_empty())
+ // If the node became dead and we haven't already seen it, delete it.
+ if (ChainNode->use_empty() &&
+ !std::count(NowDeadNodes.begin(), NowDeadNodes.end(), ChainNode))
NowDeadNodes.push_back(ChainNode);
}
}