-//===-- Instruction.cpp - Implement the Instruction class --------*- C++ -*--=//
+//===-- Instruction.cpp - Implement the Instruction class -----------------===//
+//
+// 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.
+//
+//===----------------------------------------------------------------------===//
//
// 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"
+using namespace llvm;
+
+void Instruction::init()
+{
+ // Make sure that we get added to a basicblock
+ LeakDetector::addGarbageObject(this);
+}
+
+Instruction::Instruction(const Type *ty, unsigned it, const std::string &Name,
+ Instruction *InsertBefore)
+ : User(ty, Value::InstructionVal, Name),
+ Parent(0),
+ iType(it) {
+ init();
+
+ // 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);
+ }
+}
-Instruction::Instruction(const Type *ty, unsigned it, const std::string &Name)
- : User(ty, Value::InstructionVal, Name) {
- Parent = 0;
- iType = it;
+Instruction::Instruction(const Type *ty, unsigned it, const std::string &Name,
+ BasicBlock *InsertAtEnd)
+ : User(ty, Value::InstructionVal, Name),
+ Parent(0),
+ iType(it) {
+ init();
+
+ // append this instruction into the basic block
+ assert(InsertAtEnd && "Basic block to append to may not be NULL!");
+ InsertAtEnd->getInstList().push_back(this);
+}
+
+void Instruction::setParent(BasicBlock *P) {
+ if (getParent()) {
+ if (!P) LeakDetector::addGarbageObject(this);
+ } else {
+ if (P) LeakDetector::removeGarbageObject(this);
+ }
+
+ Parent = P;
}
// 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()) &&
+ ST == &getParent()->getParent()->getSymbolTable()) &&
"Invalid symtab argument!");
if ((P = getParent()) && (PP = P->getParent()) && hasName())
- PP->getSymbolTable()->remove(this);
+ PP->getSymbolTable().remove(this);
Value::setName(name);
- if (PP && hasName()) PP->getSymbolTableSure()->insert(this);
+ if (PP && hasName()) PP->getSymbolTable().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";
+ case Unwind: return "unwind";
+
+ // 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 PHI: return "phi";
+ case Cast: return "cast";
+ case Select: return "select";
+ case Call: return "call";
+ case Shl: return "shl";
+ case Shr: return "shr";
+ case VANext: return "vanext";
+ case VAArg: return "vaarg";
+
+ default: return "<Invalid operator> ";
+ }
+
+ return 0;
+}
+
+
+/// isAssociative - Return true if the instruction is associative:
+///
+/// Associative operators satisfy: x op (y op z) === (x op y) op z)
+///
+/// In LLVM, the Add, Mul, And, Or, and Xor operators are associative, when not
+/// applied to floating point types.
+///
+bool Instruction::isAssociative(unsigned Opcode, const Type *Ty) {
+ if (Opcode == Add || Opcode == Mul ||
+ Opcode == And || Opcode == Or || Opcode == Xor) {
+ // Floating point operations do not associate!
+ return !Ty->isFloatingPoint();
+ }
+ return 0;
+}
+
+/// isCommutative - Return true if the instruction is commutative:
+///
+/// Commutative operators satisfy: (x op y) === (y op x)
+///
+/// In LLVM, these are the associative operators, plus SetEQ and SetNE, when
+/// applied to any type.
+///
+bool Instruction::isCommutative(unsigned op) {
+ switch (op) {
+ case Add:
+ case Mul:
+ case And:
+ case Or:
+ case Xor:
+ case SetEQ:
+ case SetNE:
+ return true;
+ default:
+ return false;
+ }
+}
+
+/// isRelational - Return true if the instruction is a Set* instruction:
+///
+bool Instruction::isRelational(unsigned op) {
+ switch (op) {
+ case SetEQ:
+ case SetNE:
+ case SetLT:
+ case SetGT:
+ case SetLE:
+ case SetGE:
+ return true;
+ }
+ return false;
+}
+
+
+
+/// isTrappingInstruction - Return true if the instruction may trap.
+///
+bool Instruction::isTrapping(unsigned op) {
+ switch(op) {
+ case Div:
+ case Rem:
+ case Load:
+ case Store:
+ case Call:
+ case Invoke:
+ return true;
+ default:
+ return false;
+ }
}
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