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Diffstat (limited to 'lib/Target/XCore/XCoreISelLowering.h')
-rw-r--r-- | lib/Target/XCore/XCoreISelLowering.h | 119 |
1 files changed, 119 insertions, 0 deletions
diff --git a/lib/Target/XCore/XCoreISelLowering.h b/lib/Target/XCore/XCoreISelLowering.h new file mode 100644 index 0000000..d2622c1 --- /dev/null +++ b/lib/Target/XCore/XCoreISelLowering.h @@ -0,0 +1,119 @@ +//===-- XCoreISelLowering.h - XCore DAG Lowering Interface ------*- C++ -*-===// +// +// The LLVM Compiler Infrastructure +// +// This file is distributed under the University of Illinois Open Source +// License. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// +// +// This file defines the interfaces that XCore uses to lower LLVM code into a +// selection DAG. +// +//===----------------------------------------------------------------------===// + +#ifndef XCOREISELLOWERING_H +#define XCOREISELLOWERING_H + +#include "llvm/CodeGen/SelectionDAG.h" +#include "llvm/Target/TargetLowering.h" +#include "XCore.h" + +namespace llvm { + + // Forward delcarations + class XCoreSubtarget; + class XCoreTargetMachine; + + namespace XCoreISD { + enum NodeType { + // Start the numbering where the builtin ops and target ops leave off. + FIRST_NUMBER = ISD::BUILTIN_OP_END+XCore::INSTRUCTION_LIST_END, + + // Branch and link (call) + BL, + + // pc relative address + PCRelativeWrapper, + + // dp relative address + DPRelativeWrapper, + + // cp relative address + CPRelativeWrapper, + + // Store word to stack + STWSP, + + // Corresponds to retsp instruction + RETSP, + + // Corresponds to LADD instruction + LADD, + + // Corresponds to LSUB instruction + LSUB + }; + } + + //===--------------------------------------------------------------------===// + // TargetLowering Implementation + //===--------------------------------------------------------------------===// + class XCoreTargetLowering : public TargetLowering + { + public: + + explicit XCoreTargetLowering(XCoreTargetMachine &TM); + + /// LowerOperation - Provide custom lowering hooks for some operations. + virtual SDValue LowerOperation(SDValue Op, SelectionDAG &DAG); + + virtual SDNode *ExpandOperationResult(SDNode *N, SelectionDAG &DAG); + + /// getTargetNodeName - This method returns the name of a target specific + // DAG node. + virtual const char *getTargetNodeName(unsigned Opcode) const; + + virtual MachineBasicBlock *EmitInstrWithCustomInserter(MachineInstr *MI, + MachineBasicBlock *MBB); + + virtual bool isLegalAddressingMode(const AddrMode &AM, + const Type *Ty) const; + + private: + const XCoreTargetMachine &TM; + const XCoreSubtarget &Subtarget; + + // Lower Operand helpers + SDValue LowerCCCArguments(SDValue Op, SelectionDAG &DAG); + SDValue LowerCCCCallTo(SDValue Op, SelectionDAG &DAG, unsigned CC); + SDNode *LowerCallResult(SDValue Chain, SDValue InFlag, CallSDNode*TheCall, + unsigned CallingConv, SelectionDAG &DAG); + SDValue getReturnAddressFrameIndex(SelectionDAG &DAG); + SDValue getGlobalAddressWrapper(SDValue GA, GlobalValue *GV, + SelectionDAG &DAG); + + // Lower Operand specifics + SDValue LowerRET(SDValue Op, SelectionDAG &DAG); + SDValue LowerCALL(SDValue Op, SelectionDAG &DAG); + SDValue LowerFORMAL_ARGUMENTS(SDValue Op, SelectionDAG &DAG); + SDValue LowerGlobalAddress(SDValue Op, SelectionDAG &DAG); + SDValue LowerGlobalTLSAddress(SDValue Op, SelectionDAG &DAG); + SDValue LowerConstantPool(SDValue Op, SelectionDAG &DAG); + SDValue LowerJumpTable(SDValue Op, SelectionDAG &DAG); + SDValue LowerSELECT_CC(SDValue Op, SelectionDAG &DAG); + SDValue LowerVAARG(SDValue Op, SelectionDAG &DAG); + SDValue LowerVASTART(SDValue Op, SelectionDAG &DAG); + SDValue LowerFRAMEADDR(SDValue Op, SelectionDAG &DAG); + + // Inline asm support + std::vector<unsigned> + getRegClassForInlineAsmConstraint(const std::string &Constraint, + MVT VT) const; + + // Expand specifics + SDNode *ExpandADDSUB(SDNode *Op, SelectionDAG &DAG); + }; +} + +#endif // XCOREISELLOWERING_H |