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Fix PR1011 and CodeGen/Generic/2006-11-20-DAGCombineCrash.ll

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31878 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2006-11-20 18:05:46 +00:00
parent f2d2a5a79c
commit 32ba1aa204
1 changed files with 2 additions and 2 deletions
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4
lib/CodeGen/SelectionDAG/DAGCombiner.cpp
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@ -2180,10 +2180,10 @@ SDOperand DAGCombiner::visitTRUNCATE(SDNode *N) {
// fold (truncate (ext x)) -> (ext x) or (truncate x) or x
if (N0.getOpcode() == ISD::ZERO_EXTEND || N0.getOpcode() == ISD::SIGN_EXTEND||
N0.getOpcode() == ISD::ANY_EXTEND) {
if (N0.getValueType() < VT)
if (N0.getOperand(0).getValueType() < VT)
// if the source is smaller than the dest, we still need an extend
return DAG.getNode(N0.getOpcode(), VT, N0.getOperand(0));
else if (N0.getValueType() > VT)
else if (N0.getOperand(0).getValueType() > VT)
// if the source is larger than the dest, than we just need the truncate
return DAG.getNode(ISD::TRUNCATE, VT, N0.getOperand(0));
else