llvm-6502/lib/VMCore/Instruction.cpp

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//===-- Instruction.cpp - Implement the Instruction class --------*- C++ -*--=//
//
// This file implements the Instruction class for the VMCore library.
//
//===----------------------------------------------------------------------===//
#include "llvm/Function.h"
#include "llvm/SymbolTable.h"
#include "llvm/Type.h"
#include "Support/LeakDetector.h"
Instruction::Instruction(const Type *ty, unsigned it, const std::string &Name,
Instruction *InsertBefore)
: User(ty, Value::InstructionVal, Name) {
Parent = 0;
iType = it;
// Make sure that we get added to a basicblock
LeakDetector::addGarbageObject(this);
// If requested, insert this instruction into a basic block...
if (InsertBefore) {
assert(InsertBefore->getParent() &&
"Instruction to insert before is not in a basic block!");
InsertBefore->getParent()->getInstList().insert(InsertBefore, this);
}
}
void Instruction::setParent(BasicBlock *P) {
if (getParent())
LeakDetector::addGarbageObject(this);
Parent = P;
if (getParent())
LeakDetector::removeGarbageObject(this);
}
// Specialize setName to take care of symbol table majik
void Instruction::setName(const std::string &name, SymbolTable *ST) {
BasicBlock *P = 0; Function *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);
}
const char *Instruction::getOpcodeName(unsigned OpCode) {
switch (OpCode) {
// Terminators
case Ret: return "ret";
case Br: return "br";
case Switch: return "switch";
case Invoke: return "invoke";
// Standard binary operators...
case Add: return "add";
case Sub: return "sub";
case Mul: return "mul";
case Div: return "div";
case Rem: return "rem";
// Logical operators...
case And: return "and";
case Or : return "or";
case Xor: return "xor";
// SetCC operators...
case SetLE: return "setle";
case SetGE: return "setge";
case SetLT: return "setlt";
case SetGT: return "setgt";
case SetEQ: return "seteq";
case SetNE: return "setne";
// Memory instructions...
case Malloc: return "malloc";
case Free: return "free";
case Alloca: return "alloca";
case Load: return "load";
case Store: return "store";
case GetElementPtr: return "getelementptr";
// Other instructions...
case PHINode: return "phi";
case Cast: return "cast";
case Call: return "call";
case Shl: return "shl";
case Shr: return "shr";
default: return "<Invalid operator> ";
}
return 0;
}