forked from OSchip/llvm-project
Add support for promoted registers being live across blocks.
llvm-svn: 19595
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22978217af
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209f585033
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@ -257,7 +257,20 @@ public:
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std::map<const Value*, unsigned>::const_iterator VMI =
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std::map<const Value*, unsigned>::const_iterator VMI =
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FuncInfo.ValueMap.find(V);
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FuncInfo.ValueMap.find(V);
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assert(VMI != FuncInfo.ValueMap.end() && "Value not in map!");
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assert(VMI != FuncInfo.ValueMap.end() && "Value not in map!");
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return N = DAG.getCopyFromReg(VMI->second, VT, DAG.getEntryNode());
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MVT::ValueType RegVT = VT;
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if (TLI.getTypeAction(VT) == 1) // Must promote this value?
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RegVT = TLI.getTypeToTransformTo(VT);
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N = DAG.getCopyFromReg(VMI->second, RegVT, DAG.getEntryNode());
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if (RegVT != VT)
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if (MVT::isFloatingPoint(VT))
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N = DAG.getNode(ISD::FP_ROUND, VT, N);
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else
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N = DAG.getNode(ISD::TRUNCATE, VT, N);
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return N;
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}
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}
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const SDOperand &setValue(const Value *V, SDOperand NewN) {
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const SDOperand &setValue(const Value *V, SDOperand NewN) {
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@ -777,6 +790,14 @@ CopyValueToVirtualRegister(SelectionDAGLowering &SDL, Value *V, unsigned Reg) {
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assert((Op.getOpcode() != ISD::CopyFromReg ||
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assert((Op.getOpcode() != ISD::CopyFromReg ||
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cast<RegSDNode>(Op)->getReg() != Reg) &&
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cast<RegSDNode>(Op)->getReg() != Reg) &&
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"Copy from a reg to the same reg!");
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"Copy from a reg to the same reg!");
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MVT::ValueType VT = Op.getValueType();
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if (TLI.getTypeAction(VT) == 1) { // Must promote this value?
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if (MVT::isFloatingPoint(VT))
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Op = DAG.getNode(ISD::FP_EXTEND, TLI.getTypeToTransformTo(VT), Op);
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else
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Op = DAG.getNode(ISD::ZERO_EXTEND, TLI.getTypeToTransformTo(VT), Op);
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}
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return DAG.getCopyToReg(DAG.getRoot(), Op, Reg);
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return DAG.getCopyToReg(DAG.getRoot(), Op, Reg);
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}
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}
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