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Make sure type is not extended or untyped before create a constant of the type. No test case. Found by inspection.

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llvm-svn: 159179
This commit is contained in:
Evan Cheng 2012-06-26 01:19:33 +00:00
parent 69416bf7b0
commit 652c7c94d4
1 changed files with 4 additions and 0 deletions
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4
lib/CodeGen/SelectionDAG/DAGCombiner.cpp
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@ -5020,6 +5020,10 @@ SDValue DAGCombiner::ReduceLoadWidth(SDNode *N) {
LoadSDNode *LN0 = cast<LoadSDNode>(N0);
EVT PtrType = N0.getOperand(1).getValueType();
if (PtrType == MVT::Untyped || PtrType.isExtended())
// It's not possible to generate a constant of extended or untyped type.
return SDValue();
// For big endian targets, we need to adjust the offset to the pointer to
// load the correct bytes.
if (TLI.isBigEndian()) {