mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-09-06 09:54:49 +00:00
e3087890ac
- Add getParent() accessors.
- Move SubReg out of the AuxInfo union, to make way for future changes.
- Remove the getImmedValue/setImmedValue methods.
- in some MachineOperand::Create* methods, stop initializing fields that are dead.
MachineInstr:
- Delete one copy of the MachineInstr printing code, now there is only one dump
format and one copy of the code.
- Make MachineOperand use the parent field to get info about preg register names if
no target info is otherwise available.
- Move def/use/kill/dead flag printing to the machineoperand printer, so they are
always printed for an operand.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45460 91177308-0d34-0410-b5e6-96231b3b80d8
355 lines
11 KiB
C++
355 lines
11 KiB
C++
//===-- llvm/CodeGen/MachineOperand.h - MachineOperand class ----*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file contains the declaration of the MachineOperand class.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_CODEGEN_MACHINEOPERAND_H
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#define LLVM_CODEGEN_MACHINEOPERAND_H
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#include "llvm/Support/DataTypes.h"
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#include <vector>
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#include <cassert>
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#include <iosfwd>
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namespace llvm {
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class MachineBasicBlock;
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class GlobalValue;
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class MachineInstr;
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/// MachineOperand class - Representation of each machine instruction operand.
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///
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class MachineOperand {
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public:
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enum MachineOperandType {
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MO_Register, // Register operand.
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MO_Immediate, // Immediate Operand
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MO_MachineBasicBlock, // MachineBasicBlock reference
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MO_FrameIndex, // Abstract Stack Frame Index
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MO_ConstantPoolIndex, // Address of indexed Constant in Constant Pool
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MO_JumpTableIndex, // Address of indexed Jump Table for switch
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MO_ExternalSymbol, // Name of external global symbol
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MO_GlobalAddress // Address of a global value
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};
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private:
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union {
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GlobalValue *GV; // For MO_GlobalAddress.
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MachineBasicBlock *MBB; // For MO_MachineBasicBlock.
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const char *SymbolName; // For MO_ExternalSymbol.
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unsigned RegNo; // For MO_Register.
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int64_t ImmVal; // For MO_Immediate.
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int Index; // For MO_FrameIndex/CPI/JTI.
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} contents;
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/// ParentMI - This is the instruction that this operand is embedded into.
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MachineInstr *ParentMI;
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MachineOperandType opType:8; // Discriminate the union.
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bool IsDef : 1; // True if this is a def, false if this is a use.
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bool IsImp : 1; // True if this is an implicit def or use.
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bool IsKill : 1; // True if this is a reg use and the reg is dead
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// immediately after the read.
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bool IsDead : 1; // True if this is a reg def and the reg is dead
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// immediately after the write. i.e. A register
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// that is defined but never used.
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/// SubReg - Subregister number, only valid for MO_Register. A value of 0
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/// indicates the MO_Register has no subReg.
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unsigned char SubReg;
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/// auxInfo - auxiliary information used by the MachineOperand
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union {
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/// offset - Offset to address of global or external, only valid for
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/// MO_GlobalAddress, MO_ExternalSym and MO_ConstantPoolIndex
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int offset;
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} auxInfo;
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MachineOperand() : ParentMI(0) {}
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void print(std::ostream &os) const;
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void print(std::ostream *os) const { if (os) print(*os); }
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public:
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MachineOperand(const MachineOperand &M) {
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*this = M;
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}
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~MachineOperand() {}
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/// getType - Returns the MachineOperandType for this operand.
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///
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MachineOperandType getType() const { return opType; }
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/// getParent - Return the instruction that this operand belongs to.
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///
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MachineInstr *getParent() { return ParentMI; }
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const MachineInstr *getParent() const { return ParentMI; }
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/// Accessors that tell you what kind of MachineOperand you're looking at.
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///
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bool isRegister() const { return opType == MO_Register; }
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bool isImmediate() const { return opType == MO_Immediate; }
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bool isMachineBasicBlock() const { return opType == MO_MachineBasicBlock; }
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bool isFrameIndex() const { return opType == MO_FrameIndex; }
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bool isConstantPoolIndex() const { return opType == MO_ConstantPoolIndex; }
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bool isJumpTableIndex() const { return opType == MO_JumpTableIndex; }
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bool isGlobalAddress() const { return opType == MO_GlobalAddress; }
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bool isExternalSymbol() const { return opType == MO_ExternalSymbol; }
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int64_t getImm() const {
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assert(isImmediate() && "Wrong MachineOperand accessor");
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return contents.ImmVal;
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}
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MachineBasicBlock *getMBB() const {
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assert(isMachineBasicBlock() && "Wrong MachineOperand accessor");
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return contents.MBB;
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}
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MachineBasicBlock *getMachineBasicBlock() const {
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assert(isMachineBasicBlock() && "Wrong MachineOperand accessor");
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return contents.MBB;
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}
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void setMachineBasicBlock(MachineBasicBlock *MBB) {
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assert(isMachineBasicBlock() && "Wrong MachineOperand accessor");
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contents.MBB = MBB;
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}
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int getFrameIndex() const {
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assert(isFrameIndex() && "Wrong MachineOperand accessor");
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return (int)contents.Index;
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}
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unsigned getConstantPoolIndex() const {
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assert(isConstantPoolIndex() && "Wrong MachineOperand accessor");
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return (unsigned)contents.Index;
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}
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unsigned getJumpTableIndex() const {
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assert(isJumpTableIndex() && "Wrong MachineOperand accessor");
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return (unsigned)contents.Index;
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}
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GlobalValue *getGlobal() const {
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assert(isGlobalAddress() && "Wrong MachineOperand accessor");
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return contents.GV;
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}
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int getOffset() const {
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assert((isGlobalAddress() || isExternalSymbol() || isConstantPoolIndex()) &&
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"Wrong MachineOperand accessor");
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return auxInfo.offset;
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}
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unsigned getSubReg() const {
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assert(isRegister() && "Wrong MachineOperand accessor");
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return (unsigned)SubReg;
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}
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const char *getSymbolName() const {
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assert(isExternalSymbol() && "Wrong MachineOperand accessor");
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return contents.SymbolName;
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}
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bool isUse() const {
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assert(isRegister() && "Wrong MachineOperand accessor");
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return !IsDef;
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}
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bool isDef() const {
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assert(isRegister() && "Wrong MachineOperand accessor");
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return IsDef;
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}
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void setIsUse() {
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assert(isRegister() && "Wrong MachineOperand accessor");
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IsDef = false;
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}
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void setIsDef() {
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assert(isRegister() && "Wrong MachineOperand accessor");
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IsDef = true;
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}
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bool isImplicit() const {
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assert(isRegister() && "Wrong MachineOperand accessor");
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return IsImp;
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}
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void setImplicit() {
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assert(isRegister() && "Wrong MachineOperand accessor");
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IsImp = true;
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}
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bool isKill() const {
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assert(isRegister() && "Wrong MachineOperand accessor");
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return IsKill;
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}
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bool isDead() const {
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assert(isRegister() && "Wrong MachineOperand accessor");
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return IsDead;
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}
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void setIsKill() {
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assert(isRegister() && !IsDef && "Wrong MachineOperand accessor");
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IsKill = true;
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}
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void setIsDead() {
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assert(isRegister() && IsDef && "Wrong MachineOperand accessor");
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IsDead = true;
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}
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void unsetIsKill() {
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assert(isRegister() && !IsDef && "Wrong MachineOperand accessor");
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IsKill = false;
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}
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void unsetIsDead() {
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assert(isRegister() && IsDef && "Wrong MachineOperand accessor");
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IsDead = false;
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}
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/// getReg - Returns the register number.
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///
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unsigned getReg() const {
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assert(isRegister() && "This is not a register operand!");
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return contents.RegNo;
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}
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/// MachineOperand mutators.
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///
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void setReg(unsigned Reg) {
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assert(isRegister() && "This is not a register operand!");
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contents.RegNo = Reg;
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}
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void setImm(int64_t immVal) {
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assert(isImmediate() && "Wrong MachineOperand mutator");
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contents.ImmVal = immVal;
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}
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void setOffset(int Offset) {
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assert((isGlobalAddress() || isExternalSymbol() || isConstantPoolIndex()) &&
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"Wrong MachineOperand accessor");
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auxInfo.offset = Offset;
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}
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void setSubReg(unsigned subReg) {
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assert(isRegister() && "Wrong MachineOperand accessor");
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SubReg = (unsigned char)subReg;
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}
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void setConstantPoolIndex(unsigned Idx) {
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assert(isConstantPoolIndex() && "Wrong MachineOperand accessor");
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contents.Index = Idx;
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}
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void setJumpTableIndex(unsigned Idx) {
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assert(isJumpTableIndex() && "Wrong MachineOperand accessor");
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contents.Index = Idx;
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}
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/// isIdenticalTo - Return true if this operand is identical to the specified
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/// operand. Note: This method ignores isKill and isDead properties.
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bool isIdenticalTo(const MachineOperand &Other) const;
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/// ChangeToImmediate - Replace this operand with a new immediate operand of
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/// the specified value. If an operand is known to be an immediate already,
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/// the setImm method should be used.
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void ChangeToImmediate(int64_t ImmVal) {
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opType = MO_Immediate;
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contents.ImmVal = ImmVal;
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}
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/// ChangeToRegister - Replace this operand with a new register operand of
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/// the specified value. If an operand is known to be an register already,
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/// the setReg method should be used.
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void ChangeToRegister(unsigned Reg, bool isDef, bool isImp = false,
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bool isKill = false, bool isDead = false) {
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opType = MO_Register;
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contents.RegNo = Reg;
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IsDef = isDef;
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IsImp = isImp;
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IsKill = isKill;
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IsDead = isDead;
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SubReg = 0;
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}
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static MachineOperand CreateImm(int64_t Val) {
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MachineOperand Op;
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Op.opType = MachineOperand::MO_Immediate;
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Op.contents.ImmVal = Val;
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return Op;
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}
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static MachineOperand CreateReg(unsigned Reg, bool isDef, bool isImp = false,
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bool isKill = false, bool isDead = false,
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unsigned SubReg = 0) {
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MachineOperand Op;
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Op.opType = MachineOperand::MO_Register;
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Op.IsDef = isDef;
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Op.IsImp = isImp;
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Op.IsKill = isKill;
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Op.IsDead = isDead;
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Op.contents.RegNo = Reg;
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Op.SubReg = SubReg;
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return Op;
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}
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static MachineOperand CreateMBB(MachineBasicBlock *MBB) {
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MachineOperand Op;
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Op.opType = MachineOperand::MO_MachineBasicBlock;
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Op.contents.MBB = MBB;
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return Op;
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}
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static MachineOperand CreateFI(unsigned Idx) {
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MachineOperand Op;
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Op.opType = MachineOperand::MO_FrameIndex;
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Op.contents.Index = Idx;
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return Op;
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}
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static MachineOperand CreateCPI(unsigned Idx, int Offset) {
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MachineOperand Op;
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Op.opType = MachineOperand::MO_ConstantPoolIndex;
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Op.contents.Index = Idx;
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Op.auxInfo.offset = Offset;
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return Op;
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}
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static MachineOperand CreateJTI(unsigned Idx) {
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MachineOperand Op;
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Op.opType = MachineOperand::MO_JumpTableIndex;
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Op.contents.Index = Idx;
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return Op;
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}
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static MachineOperand CreateGA(GlobalValue *GV, int Offset) {
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MachineOperand Op;
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Op.opType = MachineOperand::MO_GlobalAddress;
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Op.contents.GV = GV;
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Op.auxInfo.offset = Offset;
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return Op;
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}
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static MachineOperand CreateES(const char *SymName, int Offset = 0) {
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MachineOperand Op;
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Op.opType = MachineOperand::MO_ExternalSymbol;
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Op.contents.SymbolName = SymName;
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Op.auxInfo.offset = Offset;
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return Op;
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}
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const MachineOperand &operator=(const MachineOperand &MO) {
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contents = MO.contents;
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IsDef = MO.IsDef;
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IsImp = MO.IsImp;
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IsKill = MO.IsKill;
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IsDead = MO.IsDead;
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opType = MO.opType;
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auxInfo = MO.auxInfo;
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SubReg = MO.SubReg;
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ParentMI = MO.ParentMI;
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return *this;
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}
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friend std::ostream& operator<<(std::ostream& os, const MachineOperand& mop) {
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mop.print(os);
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return os;
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}
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friend class MachineInstr;
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};
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std::ostream& operator<<(std::ostream &OS, const MachineOperand &MO);
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} // End llvm namespace
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#endif
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