diff options
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/CodeGen/SelectionDAG/DAGCombiner.cpp | 11 |
1 files changed, 6 insertions, 5 deletions
diff --git a/lib/CodeGen/SelectionDAG/DAGCombiner.cpp b/lib/CodeGen/SelectionDAG/DAGCombiner.cpp index c31598e..7154d9d 100644 --- a/lib/CodeGen/SelectionDAG/DAGCombiner.cpp +++ b/lib/CodeGen/SelectionDAG/DAGCombiner.cpp @@ -6242,6 +6242,10 @@ SDValue DAGCombiner::visitEXTRACT_VECTOR_ELT(SDNode *N) { if (!LN0 || !LN0->hasOneUse() || LN0->isVolatile()) return SDValue(); + // If Idx was -1 above, Elt is going to be -1, so just return undef. + if (Elt == -1) + return DAG.getUNDEF(LN0->getBasePtr().getValueType()); + unsigned Align = LN0->getAlignment(); if (NewLoad) { // Check the resultant load doesn't need a higher alignment than the @@ -6257,11 +6261,8 @@ SDValue DAGCombiner::visitEXTRACT_VECTOR_ELT(SDNode *N) { SDValue NewPtr = LN0->getBasePtr(); unsigned PtrOff = 0; - // If Idx was -1 above, Elt is going to be -1, so just use undef as our - // new pointer. - if (Elt == -1) { - NewPtr = DAG.getUNDEF(NewPtr.getValueType()); - } else if (Elt) { + + if (Elt) { PtrOff = LVT.getSizeInBits() * Elt / 8; EVT PtrType = NewPtr.getValueType(); if (TLI.isBigEndian()) |