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merge a few pieces of code that do the store/load to stack
pattern to use EmitStackConvert now. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46066 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -3573,20 +3573,12 @@ SDOperand SelectionDAGLegalize::LegalizeOp(SDOperand Op) {
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break;
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case ISD::FP_EXTEND: {
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MVT::ValueType newVT = Op.getValueType();
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MVT::ValueType oldVT = Op.getOperand(0).getValueType();
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if (TLI.getConvertAction(oldVT, newVT) == TargetLowering::Expand) {
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MVT::ValueType DstVT = Op.getValueType();
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MVT::ValueType SrcVT = Op.getOperand(0).getValueType();
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if (TLI.getConvertAction(SrcVT, DstVT) == TargetLowering::Expand) {
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// The only other way we can lower this is to turn it into a STORE,
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// LOAD pair, targetting a temporary location (a stack slot).
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// NOTE: there is a choice here between constantly creating new stack
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// slots and always reusing the same one. We currently always create
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// new ones, as reuse may inhibit scheduling.
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SDOperand StackSlot = DAG.CreateStackTemporary(oldVT);
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Result = DAG.getStore(DAG.getEntryNode(), Node->getOperand(0),
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StackSlot, NULL, 0);
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Result = DAG.getExtLoad(ISD::EXTLOAD, newVT,
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Result, StackSlot, NULL, 0, oldVT);
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Result = EmitStackConvert(Node->getOperand(0), SrcVT, DstVT);
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break;
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}
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}
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@ -3603,25 +3595,18 @@ SDOperand SelectionDAGLegalize::LegalizeOp(SDOperand Op) {
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}
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break;
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case ISD::FP_ROUND: {
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MVT::ValueType newVT = Op.getValueType();
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MVT::ValueType oldVT = Op.getOperand(0).getValueType();
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if (TLI.getConvertAction(oldVT, newVT) == TargetLowering::Expand) {
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if (oldVT == MVT::ppcf128) {
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MVT::ValueType DstVT = Op.getValueType();
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MVT::ValueType SrcVT = Op.getOperand(0).getValueType();
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if (TLI.getConvertAction(SrcVT, DstVT) == TargetLowering::Expand) {
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if (SrcVT == MVT::ppcf128) {
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SDOperand Lo, Hi;
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ExpandOp(Node->getOperand(0), Lo, Hi);
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Result = DAG.getNode(ISD::FP_ROUND, newVT, Hi);
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Result = DAG.getNode(ISD::FP_ROUND, DstVT, Hi);
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break;
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} else {
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// The only other way we can lower this is to turn it into a STORE,
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// LOAD pair, targetting a temporary location (a stack slot).
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// NOTE: there is a choice here between constantly creating new stack
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// slots and always reusing the same one. We currently always create
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// new ones, as reuse may inhibit scheduling.
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SDOperand StackSlot = DAG.CreateStackTemporary(newVT);
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Result = DAG.getTruncStore(DAG.getEntryNode(), Node->getOperand(0),
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StackSlot, NULL, 0, newVT);
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Result = DAG.getLoad(newVT, Result, StackSlot, NULL, 0);
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Result = EmitStackConvert(Node->getOperand(0), DstVT, DstVT);
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break;
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}
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}
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@ -3700,11 +3685,8 @@ SDOperand SelectionDAGLegalize::LegalizeOp(SDOperand Op) {
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// NOTE: there is a choice here between constantly creating new stack
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// slots and always reusing the same one. We currently always create
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// new ones, as reuse may inhibit scheduling.
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SDOperand StackSlot = DAG.CreateStackTemporary(ExtraVT);
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Result = DAG.getTruncStore(DAG.getEntryNode(), Node->getOperand(0),
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StackSlot, NULL, 0, ExtraVT);
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Result = DAG.getExtLoad(ISD::EXTLOAD, Node->getValueType(0),
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Result, StackSlot, NULL, 0, ExtraVT);
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Result = EmitStackConvert(Node->getOperand(0), ExtraVT,
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Node->getValueType(0));
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} else {
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assert(0 && "Unknown op");
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}
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