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Do not create ZEXTLOAD's unless we are before legalize or the operation is 

legal.

llvm-svn: 27402
This commit is contained in:
Chris Lattner 2006-04-04 17:39:18 +00:00
parent d5ed3789dd
commit 4ea52cac01
1 changed files with 2 additions and 1 deletions
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3
llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
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@ -1193,7 +1193,8 @@ SDOperand DAGCombiner::visitAND(SDNode *N) {
LoadedVT = N0.getOpcode() == ISD::LOAD ? VT :
cast<VTSDNode>(N0.getOperand(3))->getVT();
if (EVT != MVT::Other && LoadedVT > EVT) {
if (EVT != MVT::Other && LoadedVT > EVT &&
(!AfterLegalize || TLI.isOperationLegal(ISD::ZEXTLOAD, EVT))) {
MVT::ValueType PtrType = N0.getOperand(1).getValueType();
// For big endian targets, we need to add an offset to the pointer to load
// the correct bytes. For little endian systems, we merely need to read