diff options
| -rw-r--r-- | lib/CodeGen/SelectionDAG/DAGCombiner.cpp | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/lib/CodeGen/SelectionDAG/DAGCombiner.cpp b/lib/CodeGen/SelectionDAG/DAGCombiner.cpp index 031bf61c74..ddd8549a09 100644 --- a/lib/CodeGen/SelectionDAG/DAGCombiner.cpp +++ b/lib/CodeGen/SelectionDAG/DAGCombiner.cpp @@ -1550,7 +1550,8 @@ SDOperand DAGCombiner::visitSIGN_EXTEND(SDNode *N) { return DAG.getNode(ISD::SIGN_EXTEND_INREG, VT, N0.getOperand(0), DAG.getValueType(N0.getValueType())); // fold (sext (load x)) -> (sext (truncate (sextload x))) - if (N0.getOpcode() == ISD::LOAD && N0.hasOneUse()) { + if (N0.getOpcode() == ISD::LOAD && N0.hasOneUse() && + (!AfterLegalize||TLI.isOperationLegal(ISD::SEXTLOAD, N0.getValueType()))){ SDOperand ExtLoad = DAG.getExtLoad(ISD::SEXTLOAD, VT, N0.getOperand(0), N0.getOperand(1), N0.getOperand(2), N0.getValueType()); @@ -1592,7 +1593,8 @@ SDOperand DAGCombiner::visitZERO_EXTEND(SDNode *N) { (!AfterLegalize || TLI.isOperationLegal(ISD::AND, N0.getValueType()))) return DAG.getZeroExtendInReg(N0.getOperand(0), N0.getValueType()); // fold (zext (load x)) -> (zext (truncate (zextload x))) - if (N0.getOpcode() == ISD::LOAD && N0.hasOneUse()) { + if (N0.getOpcode() == ISD::LOAD && N0.hasOneUse() && + (!AfterLegalize||TLI.isOperationLegal(ISD::ZEXTLOAD, N0.getValueType()))){ SDOperand ExtLoad = DAG.getExtLoad(ISD::ZEXTLOAD, VT, N0.getOperand(0), N0.getOperand(1), N0.getOperand(2), N0.getValueType()); |