diff options
Diffstat (limited to 'contrib/llvm/lib/Target/SystemZ/SystemZInstrInfo.h')
-rw-r--r-- | contrib/llvm/lib/Target/SystemZ/SystemZInstrInfo.h | 123 |
1 files changed, 123 insertions, 0 deletions
diff --git a/contrib/llvm/lib/Target/SystemZ/SystemZInstrInfo.h b/contrib/llvm/lib/Target/SystemZ/SystemZInstrInfo.h new file mode 100644 index 0000000..0fc4761 --- /dev/null +++ b/contrib/llvm/lib/Target/SystemZ/SystemZInstrInfo.h @@ -0,0 +1,123 @@ +//===-- SystemZInstrInfo.h - SystemZ instruction information ----*- C++ -*-===// +// +// The LLVM Compiler Infrastructure +// +// This file is distributed under the University of Illinois Open Source +// License. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// +// +// This file contains the SystemZ implementation of the TargetInstrInfo class. +// +//===----------------------------------------------------------------------===// + +#ifndef LLVM_TARGET_SYSTEMZINSTRINFO_H +#define LLVM_TARGET_SYSTEMZINSTRINFO_H + +#include "SystemZ.h" +#include "SystemZRegisterInfo.h" +#include "llvm/Target/TargetInstrInfo.h" + +#define GET_INSTRINFO_HEADER +#include "SystemZGenInstrInfo.inc" + +namespace llvm { + +class SystemZTargetMachine; + +namespace SystemZII { + enum { + // See comments in SystemZInstrFormats.td. + SimpleBDXLoad = (1 << 0), + SimpleBDXStore = (1 << 1), + Has20BitOffset = (1 << 2), + HasIndex = (1 << 3), + Is128Bit = (1 << 4) + }; + // SystemZ MachineOperand target flags. + enum { + // Masks out the bits for the access model. + MO_SYMBOL_MODIFIER = (1 << 0), + + // @GOT (aka @GOTENT) + MO_GOT = (1 << 0) + }; +} + +class SystemZInstrInfo : public SystemZGenInstrInfo { + const SystemZRegisterInfo RI; + + void splitMove(MachineBasicBlock::iterator MI, unsigned NewOpcode) const; + void splitAdjDynAlloc(MachineBasicBlock::iterator MI) const; + +public: + explicit SystemZInstrInfo(SystemZTargetMachine &TM); + + // Override TargetInstrInfo. + virtual unsigned isLoadFromStackSlot(const MachineInstr *MI, + int &FrameIndex) const LLVM_OVERRIDE; + virtual unsigned isStoreToStackSlot(const MachineInstr *MI, + int &FrameIndex) const LLVM_OVERRIDE; + virtual bool AnalyzeBranch(MachineBasicBlock &MBB, + MachineBasicBlock *&TBB, + MachineBasicBlock *&FBB, + SmallVectorImpl<MachineOperand> &Cond, + bool AllowModify) const LLVM_OVERRIDE; + virtual unsigned RemoveBranch(MachineBasicBlock &MBB) const LLVM_OVERRIDE; + virtual unsigned InsertBranch(MachineBasicBlock &MBB, MachineBasicBlock *TBB, + MachineBasicBlock *FBB, + const SmallVectorImpl<MachineOperand> &Cond, + DebugLoc DL) const LLVM_OVERRIDE; + virtual void copyPhysReg(MachineBasicBlock &MBB, + MachineBasicBlock::iterator MBBI, DebugLoc DL, + unsigned DestReg, unsigned SrcReg, + bool KillSrc) const LLVM_OVERRIDE; + virtual void + storeRegToStackSlot(MachineBasicBlock &MBB, + MachineBasicBlock::iterator MBBI, + unsigned SrcReg, bool isKill, int FrameIndex, + const TargetRegisterClass *RC, + const TargetRegisterInfo *TRI) const LLVM_OVERRIDE; + virtual void + loadRegFromStackSlot(MachineBasicBlock &MBB, + MachineBasicBlock::iterator MBBI, + unsigned DestReg, int FrameIdx, + const TargetRegisterClass *RC, + const TargetRegisterInfo *TRI) const LLVM_OVERRIDE; + virtual bool + expandPostRAPseudo(MachineBasicBlock::iterator MBBI) const LLVM_OVERRIDE; + virtual bool + ReverseBranchCondition(SmallVectorImpl<MachineOperand> &Cond) const + LLVM_OVERRIDE; + + // Return the SystemZRegisterInfo, which this class owns. + const SystemZRegisterInfo &getRegisterInfo() const { return RI; } + + // Return true if MI is a conditional or unconditional branch. + // When returning true, set Cond to the mask of condition-code + // values on which the instruction will branch, and set Target + // to the operand that contains the branch target. This target + // can be a register or a basic block. + bool isBranch(const MachineInstr *MI, unsigned &Cond, + const MachineOperand *&Target) const; + + // Get the load and store opcodes for a given register class. + void getLoadStoreOpcodes(const TargetRegisterClass *RC, + unsigned &LoadOpcode, unsigned &StoreOpcode) const; + + // Opcode is the opcode of an instruction that has an address operand, + // and the caller wants to perform that instruction's operation on an + // address that has displacement Offset. Return the opcode of a suitable + // instruction (which might be Opcode itself) or 0 if no such instruction + // exists. + unsigned getOpcodeForOffset(unsigned Opcode, int64_t Offset) const; + + // Emit code before MBBI in MI to move immediate value Value into + // physical register Reg. + void loadImmediate(MachineBasicBlock &MBB, + MachineBasicBlock::iterator MBBI, + unsigned Reg, uint64_t Value) const; +}; +} // end namespace llvm + +#endif |