diff options
Diffstat (limited to 'lib/CodeGen/SelectionDAG/DAGCombiner.cpp')
| -rw-r--r-- | lib/CodeGen/SelectionDAG/DAGCombiner.cpp | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/lib/CodeGen/SelectionDAG/DAGCombiner.cpp b/lib/CodeGen/SelectionDAG/DAGCombiner.cpp index 0ea46af2ac..d575e8a4ad 100644 --- a/lib/CodeGen/SelectionDAG/DAGCombiner.cpp +++ b/lib/CodeGen/SelectionDAG/DAGCombiner.cpp @@ -6413,6 +6413,13 @@ SDValue DAGCombiner::SimplifyVBinOp(SDNode *N) { break; } + // If the vector element type is not legal, the BUILD_VECTOR operands + // are promoted and implicitly truncated. Make that explicit here. + if (LHSOp.getValueType() != EltType) + LHSOp = DAG.getNode(ISD::TRUNCATE, LHS.getDebugLoc(), EltType, LHSOp); + if (RHSOp.getValueType() != EltType) + RHSOp = DAG.getNode(ISD::TRUNCATE, RHS.getDebugLoc(), EltType, RHSOp); + SDValue FoldOp = DAG.getNode(N->getOpcode(), LHS.getDebugLoc(), EltType, LHSOp, RHSOp); if (FoldOp.getOpcode() != ISD::UNDEF && |