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path: root/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
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Diffstat (limited to 'lib/CodeGen/SelectionDAG/DAGCombiner.cpp')
-rw-r--r--lib/CodeGen/SelectionDAG/DAGCombiner.cpp12
1 files changed, 5 insertions, 7 deletions
diff --git a/lib/CodeGen/SelectionDAG/DAGCombiner.cpp b/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
index 569b1a91d7..6187aba640 100644
--- a/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
+++ b/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
@@ -2292,7 +2292,6 @@ SDOperand DAGCombiner::ReduceLoadWidth(SDNode *N) {
N0 = N0.getOperand(0);
if (MVT::getSizeInBits(N0.getValueType()) <= EVTBits)
return SDOperand();
- ShAmt /= 8;
CombineSRL = true;
}
}
@@ -2308,12 +2307,11 @@ SDOperand DAGCombiner::ReduceLoadWidth(SDNode *N) {
"Cannot truncate to larger type!");
LoadSDNode *LN0 = cast<LoadSDNode>(N0);
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
- // fewer bytes from the same pointer.
- uint64_t PtrOff = ShAmt
- ? ShAmt : (TLI.isLittleEndian() ? 0
- : (MVT::getSizeInBits(N0.getValueType()) - EVTBits) / 8);
+ // For big endian targets, we need to adjust the offset to the pointer to
+ // load the correct bytes.
+ if (!TLI.isLittleEndian())
+ ShAmt = MVT::getSizeInBits(N0.getValueType()) - ShAmt - EVTBits;
+ uint64_t PtrOff = ShAmt / 8;
SDOperand NewPtr = DAG.getNode(ISD::ADD, PtrType, LN0->getBasePtr(),
DAG.getConstant(PtrOff, PtrType));
AddToWorkList(NewPtr.Val);