llvm/lib/VMCore/Instruction.cpp
2002-01-20 22:54:45 +00:00

56 lines
1.8 KiB
C++

//===-- Instruction.cpp - Implement the Instruction class --------*- C++ -*--=//
//
// This file implements the Instruction class for the VMCore library.
//
//===----------------------------------------------------------------------===//
#include "llvm/Instruction.h"
#include "llvm/BasicBlock.h"
#include "llvm/Method.h"
#include "llvm/SymbolTable.h"
#include "llvm/CodeGen/MachineInstr.h"
Instruction::Instruction(const Type *ty, unsigned it, const std::string &Name)
: User(ty, Value::InstructionVal, Name),
machineInstrVec(new MachineCodeForVMInstr) {
Parent = 0;
iType = it;
}
Instruction::~Instruction() {
assert(getParent() == 0 && "Instruction still embedded in basic block!");
delete machineInstrVec;
}
// Specialize setName to take care of symbol table majik
void Instruction::setName(const std::string &name, SymbolTable *ST) {
BasicBlock *P = 0; Method *PP = 0;
assert((ST == 0 || !getParent() || !getParent()->getParent() ||
ST == getParent()->getParent()->getSymbolTable()) &&
"Invalid symtab argument!");
if ((P = getParent()) && (PP = P->getParent()) && hasName())
PP->getSymbolTable()->remove(this);
Value::setName(name);
if (PP && hasName()) PP->getSymbolTableSure()->insert(this);
}
void Instruction::addMachineInstruction(MachineInstr* minstr) {
machineInstrVec->push_back(minstr);
}
#if 0
// Dont make this inline because you would need to include
// MachineInstr.h in Instruction.h, which creates a circular
// sequence of forward declarations. Trying to fix that will
// cause a serious circularity in link order.
//
const std::vector<Value*> &Instruction::getTempValuesForMachineCode() const {
return machineInstrVec->getTempValues();
}
#endif
void Instruction::dropAllReferences() {
machineInstrVec->dropAllReferences();
User::dropAllReferences();
}