PR4737: Fix a nasty bug in load narrowing with non-power-of-two types.
llvm-svn: 79415
diff --git a/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp b/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
index 3c4f9de..4138e98 100644
--- a/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
@@ -3466,7 +3466,8 @@
// Is the shift amount a multiple of size of VT?
if ((ShAmt & (EVTBits-1)) == 0) {
N0 = N0.getOperand(0);
- if (N0.getValueType().getSizeInBits() <= EVTBits)
+ // Is the load width a multiple of size of VT?
+ if ((N0.getValueType().getSizeInBits() & (EVTBits-1)) != 0)
return SDValue();
}
}