mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-08-20 11:29:24 +00:00
operands. e.g. def CALL32r : I<0xFF, MRM2r, (ops GR32:$dst, variable_ops), "call {*}$dst", [(X86call GR32:$dst)]>; TableGen should emit operand informations for the "required" operands. Added a target instruction info flag M_VARIABLE_OPS to indicate the target instruction may have more operands in addition to the minimum required operands. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28791 91177308-0d34-0410-b5e6-96231b3b80d8
252 lines
7.7 KiB
C++
252 lines
7.7 KiB
C++
//===-- MachineInstr.cpp --------------------------------------------------===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file was developed by the LLVM research group and is distributed under
|
|
// the University of Illinois Open Source License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// Methods common to all machine instructions.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "llvm/CodeGen/MachineInstr.h"
|
|
#include "llvm/CodeGen/MachineFunction.h"
|
|
#include "llvm/Target/TargetMachine.h"
|
|
#include "llvm/Target/TargetInstrInfo.h"
|
|
#include "llvm/Target/MRegisterInfo.h"
|
|
#include "llvm/Support/LeakDetector.h"
|
|
#include <iostream>
|
|
|
|
using namespace llvm;
|
|
|
|
// Global variable holding an array of descriptors for machine instructions.
|
|
// The actual object needs to be created separately for each target machine.
|
|
// This variable is initialized and reset by class TargetInstrInfo.
|
|
//
|
|
// FIXME: This should be a property of the target so that more than one target
|
|
// at a time can be active...
|
|
//
|
|
namespace llvm {
|
|
extern const TargetInstrDescriptor *TargetInstrDescriptors;
|
|
}
|
|
|
|
/// MachineInstr ctor - This constructor only does a _reserve_ of the operands,
|
|
/// not a resize for them. It is expected that if you use this that you call
|
|
/// add* methods below to fill up the operands, instead of the Set methods.
|
|
/// Eventually, the "resizing" ctors will be phased out.
|
|
///
|
|
MachineInstr::MachineInstr(short opcode, unsigned numOperands)
|
|
: Opcode(opcode), parent(0) {
|
|
Operands.reserve(numOperands);
|
|
// Make sure that we get added to a machine basicblock
|
|
LeakDetector::addGarbageObject(this);
|
|
}
|
|
|
|
/// MachineInstr ctor - Work exactly the same as the ctor above, except that the
|
|
/// MachineInstr is created and added to the end of the specified basic block.
|
|
///
|
|
MachineInstr::MachineInstr(MachineBasicBlock *MBB, short opcode,
|
|
unsigned numOperands)
|
|
: Opcode(opcode), parent(0) {
|
|
assert(MBB && "Cannot use inserting ctor with null basic block!");
|
|
Operands.reserve(numOperands);
|
|
// Make sure that we get added to a machine basicblock
|
|
LeakDetector::addGarbageObject(this);
|
|
MBB->push_back(this); // Add instruction to end of basic block!
|
|
}
|
|
|
|
/// MachineInstr ctor - Copies MachineInstr arg exactly
|
|
///
|
|
MachineInstr::MachineInstr(const MachineInstr &MI) {
|
|
Opcode = MI.getOpcode();
|
|
Operands.reserve(MI.getNumOperands());
|
|
|
|
// Add operands
|
|
for (unsigned i = 0; i != MI.getNumOperands(); ++i)
|
|
Operands.push_back(MI.getOperand(i));
|
|
|
|
// Set parent, next, and prev to null
|
|
parent = 0;
|
|
prev = 0;
|
|
next = 0;
|
|
}
|
|
|
|
|
|
MachineInstr::~MachineInstr() {
|
|
LeakDetector::removeGarbageObject(this);
|
|
}
|
|
|
|
/// removeFromParent - This method unlinks 'this' from the containing basic
|
|
/// block, and returns it, but does not delete it.
|
|
MachineInstr *MachineInstr::removeFromParent() {
|
|
assert(getParent() && "Not embedded in a basic block!");
|
|
getParent()->remove(this);
|
|
return this;
|
|
}
|
|
|
|
|
|
/// OperandComplete - Return true if it's illegal to add a new operand
|
|
///
|
|
bool MachineInstr::OperandsComplete() const {
|
|
int NumOperands = TargetInstrDescriptors[Opcode].numOperands;
|
|
if ((TargetInstrDescriptors[Opcode].Flags & M_VARIABLE_OPS) == 0 &&
|
|
getNumOperands() >= (unsigned)NumOperands)
|
|
return true; // Broken: we have all the operands of this instruction!
|
|
return false;
|
|
}
|
|
|
|
void MachineInstr::dump() const {
|
|
std::cerr << " " << *this;
|
|
}
|
|
|
|
static inline void OutputReg(std::ostream &os, unsigned RegNo,
|
|
const MRegisterInfo *MRI = 0) {
|
|
if (!RegNo || MRegisterInfo::isPhysicalRegister(RegNo)) {
|
|
if (MRI)
|
|
os << "%" << MRI->get(RegNo).Name;
|
|
else
|
|
os << "%mreg(" << RegNo << ")";
|
|
} else
|
|
os << "%reg" << RegNo;
|
|
}
|
|
|
|
static void print(const MachineOperand &MO, std::ostream &OS,
|
|
const TargetMachine *TM) {
|
|
const MRegisterInfo *MRI = 0;
|
|
|
|
if (TM) MRI = TM->getRegisterInfo();
|
|
|
|
switch (MO.getType()) {
|
|
case MachineOperand::MO_Register:
|
|
OutputReg(OS, MO.getReg(), MRI);
|
|
break;
|
|
case MachineOperand::MO_Immediate:
|
|
OS << MO.getImmedValue();
|
|
break;
|
|
case MachineOperand::MO_MachineBasicBlock:
|
|
OS << "mbb<"
|
|
<< ((Value*)MO.getMachineBasicBlock()->getBasicBlock())->getName()
|
|
<< "," << (void*)MO.getMachineBasicBlock() << ">";
|
|
break;
|
|
case MachineOperand::MO_FrameIndex:
|
|
OS << "<fi#" << MO.getFrameIndex() << ">";
|
|
break;
|
|
case MachineOperand::MO_ConstantPoolIndex:
|
|
OS << "<cp#" << MO.getConstantPoolIndex() << ">";
|
|
break;
|
|
case MachineOperand::MO_JumpTableIndex:
|
|
OS << "<jt#" << MO.getJumpTableIndex() << ">";
|
|
break;
|
|
case MachineOperand::MO_GlobalAddress:
|
|
OS << "<ga:" << ((Value*)MO.getGlobal())->getName();
|
|
if (MO.getOffset()) OS << "+" << MO.getOffset();
|
|
OS << ">";
|
|
break;
|
|
case MachineOperand::MO_ExternalSymbol:
|
|
OS << "<es:" << MO.getSymbolName();
|
|
if (MO.getOffset()) OS << "+" << MO.getOffset();
|
|
OS << ">";
|
|
break;
|
|
default:
|
|
assert(0 && "Unrecognized operand type");
|
|
}
|
|
}
|
|
|
|
void MachineInstr::print(std::ostream &OS, const TargetMachine *TM) const {
|
|
unsigned StartOp = 0;
|
|
|
|
// Specialize printing if op#0 is definition
|
|
if (getNumOperands() && getOperand(0).isDef() && !getOperand(0).isUse()) {
|
|
::print(getOperand(0), OS, TM);
|
|
OS << " = ";
|
|
++StartOp; // Don't print this operand again!
|
|
}
|
|
|
|
// Must check if Target machine is not null because machine BB could not
|
|
// be attached to a Machine function yet
|
|
if (TM)
|
|
OS << TM->getInstrInfo()->getName(getOpcode());
|
|
|
|
for (unsigned i = StartOp, e = getNumOperands(); i != e; ++i) {
|
|
const MachineOperand& mop = getOperand(i);
|
|
if (i != StartOp)
|
|
OS << ",";
|
|
OS << " ";
|
|
::print(mop, OS, TM);
|
|
|
|
if (mop.isDef())
|
|
if (mop.isUse())
|
|
OS << "<def&use>";
|
|
else
|
|
OS << "<def>";
|
|
}
|
|
|
|
OS << "\n";
|
|
}
|
|
|
|
std::ostream &llvm::operator<<(std::ostream &os, const MachineInstr &MI) {
|
|
// If the instruction is embedded into a basic block, we can find the target
|
|
// info for the instruction.
|
|
if (const MachineBasicBlock *MBB = MI.getParent()) {
|
|
const MachineFunction *MF = MBB->getParent();
|
|
if (MF)
|
|
MI.print(os, &MF->getTarget());
|
|
else
|
|
MI.print(os, 0);
|
|
return os;
|
|
}
|
|
|
|
// Otherwise, print it out in the "raw" format without symbolic register names
|
|
// and such.
|
|
os << TargetInstrDescriptors[MI.getOpcode()].Name;
|
|
|
|
for (unsigned i = 0, N = MI.getNumOperands(); i < N; i++) {
|
|
os << "\t" << MI.getOperand(i);
|
|
if (MI.getOperand(i).isDef())
|
|
if (MI.getOperand(i).isUse())
|
|
os << "<d&u>";
|
|
else
|
|
os << "<d>";
|
|
}
|
|
|
|
return os << "\n";
|
|
}
|
|
|
|
std::ostream &llvm::operator<<(std::ostream &OS, const MachineOperand &MO) {
|
|
switch (MO.getType()) {
|
|
case MachineOperand::MO_Register:
|
|
OutputReg(OS, MO.getReg());
|
|
break;
|
|
case MachineOperand::MO_Immediate:
|
|
OS << (long)MO.getImmedValue();
|
|
break;
|
|
case MachineOperand::MO_MachineBasicBlock:
|
|
OS << "<mbb:"
|
|
<< ((Value*)MO.getMachineBasicBlock()->getBasicBlock())->getName()
|
|
<< "@" << (void*)MO.getMachineBasicBlock() << ">";
|
|
break;
|
|
case MachineOperand::MO_FrameIndex:
|
|
OS << "<fi#" << MO.getFrameIndex() << ">";
|
|
break;
|
|
case MachineOperand::MO_ConstantPoolIndex:
|
|
OS << "<cp#" << MO.getConstantPoolIndex() << ">";
|
|
break;
|
|
case MachineOperand::MO_JumpTableIndex:
|
|
OS << "<jt#" << MO.getJumpTableIndex() << ">";
|
|
break;
|
|
case MachineOperand::MO_GlobalAddress:
|
|
OS << "<ga:" << ((Value*)MO.getGlobal())->getName() << ">";
|
|
break;
|
|
case MachineOperand::MO_ExternalSymbol:
|
|
OS << "<es:" << MO.getSymbolName() << ">";
|
|
break;
|
|
default:
|
|
assert(0 && "Unrecognized operand type");
|
|
break;
|
|
}
|
|
|
|
return OS;
|
|
}
|