X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=lib%2FVMCore%2FInstruction.cpp;h=5107b74417a549afffc88446b30971db7622a386;hb=e6be34a53ecbe8c2ff9f0793b13d847e94c0de91;hp=b009c01eecb7cae95c16657e458b950949cad58f;hpb=786993c01ec8bdabe354fb62a083fedc9d7a087e;p=oota-llvm.git diff --git a/lib/VMCore/Instruction.cpp b/lib/VMCore/Instruction.cpp index b009c01eecb..5107b74417a 100644 --- a/lib/VMCore/Instruction.cpp +++ b/lib/VMCore/Instruction.cpp @@ -1,28 +1,26 @@ //===-- 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 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" +#include "llvm/Instructions.h" +#include "llvm/Function.h" +#include "llvm/Support/CallSite.h" +#include "llvm/Support/LeakDetector.h" using namespace llvm; -Instruction::Instruction(const Type *ty, unsigned it, const std::string &Name, +Instruction::Instruction(const Type *ty, unsigned it, Use *Ops, unsigned NumOps, Instruction *InsertBefore) - : User(ty, Value::InstructionVal, Name) { - Parent = 0; - iType = it; - + : User(ty, Value::InstructionVal + it, Ops, NumOps), Parent(0) { // Make sure that we get added to a basicblock LeakDetector::addGarbageObject(this); @@ -34,6 +32,24 @@ Instruction::Instruction(const Type *ty, unsigned it, const std::string &Name, } } +Instruction::Instruction(const Type *ty, unsigned it, Use *Ops, unsigned NumOps, + BasicBlock *InsertAtEnd) + : User(ty, Value::InstructionVal + it, Ops, NumOps), Parent(0) { + // Make sure that we get added to a basicblock + LeakDetector::addGarbageObject(this); + + // append this instruction into the basic block + assert(InsertAtEnd && "Basic block to append to may not be NULL!"); + InsertAtEnd->getInstList().push_back(this); +} + + +// Out of line virtual method, so the vtable, etc has a home. +Instruction::~Instruction() { + assert(Parent == 0 && "Instruction still linked in the program!"); +} + + void Instruction::setParent(BasicBlock *P) { if (getParent()) { if (!P) LeakDetector::addGarbageObject(this); @@ -44,16 +60,20 @@ void Instruction::setParent(BasicBlock *P) { 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()) && - "Invalid symtab argument!"); - if ((P = getParent()) && (PP = P->getParent()) && hasName()) - PP->getSymbolTable().remove(this); - Value::setName(name); - if (PP && hasName()) PP->getSymbolTable().insert(this); +void Instruction::removeFromParent() { + getParent()->getInstList().remove(this); +} + +void Instruction::eraseFromParent() { + getParent()->getInstList().erase(this); +} + +/// moveBefore - Unlink this instruction from its current basic block and +/// insert it into the basic block that MovePos lives in, right before +/// MovePos. +void Instruction::moveBefore(Instruction *MovePos) { + MovePos->getParent()->getInstList().splice(MovePos,getParent()->getInstList(), + this); } @@ -65,27 +85,24 @@ const char *Instruction::getOpcodeName(unsigned OpCode) { case Switch: return "switch"; case Invoke: return "invoke"; case Unwind: return "unwind"; - + case Unreachable: return "unreachable"; + // Standard binary operators... case Add: return "add"; case Sub: return "sub"; case Mul: return "mul"; - case Div: return "div"; - case Rem: return "rem"; + case UDiv: return "udiv"; + case SDiv: return "sdiv"; + case FDiv: return "fdiv"; + case URem: return "urem"; + case SRem: return "srem"; + case FRem: return "frem"; // 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"; @@ -93,22 +110,110 @@ const char *Instruction::getOpcodeName(unsigned OpCode) { case Load: return "load"; case Store: return "store"; case GetElementPtr: return "getelementptr"; - + + // Convert instructions... + case Trunc: return "trunc"; + case ZExt: return "zext"; + case SExt: return "sext"; + case FPTrunc: return "fptrunc"; + case FPExt: return "fpext"; + case FPToUI: return "fptoui"; + case FPToSI: return "fptosi"; + case UIToFP: return "uitofp"; + case SIToFP: return "sitofp"; + case IntToPtr: return "inttoptr"; + case PtrToInt: return "ptrtoint"; + case BitCast: return "bitcast"; + // Other instructions... - case PHI: return "phi"; - case Cast: return "cast"; - case Call: return "call"; - case Shl: return "shl"; - case Shr: return "shr"; - case VANext: return "vanext"; - case VAArg: return "vaarg"; + case ICmp: return "icmp"; + case FCmp: return "fcmp"; + case PHI: return "phi"; + case Select: return "select"; + case Call: return "call"; + case Shl: return "shl"; + case LShr: return "lshr"; + case AShr: return "ashr"; + case VAArg: return "va_arg"; + case ExtractElement: return "extractelement"; + case InsertElement: return "insertelement"; + case ShuffleVector: return "shufflevector"; + case GetResult: return "getresult"; default: return " "; } - + return 0; } +/// isIdenticalTo - Return true if the specified instruction is exactly +/// identical to the current one. This means that all operands match and any +/// extra information (e.g. load is volatile) agree. +bool Instruction::isIdenticalTo(Instruction *I) const { + if (getOpcode() != I->getOpcode() || + getNumOperands() != I->getNumOperands() || + getType() != I->getType()) + return false; + + // We have two instructions of identical opcode and #operands. Check to see + // if all operands are the same. + for (unsigned i = 0, e = getNumOperands(); i != e; ++i) + if (getOperand(i) != I->getOperand(i)) + return false; + + // Check special state that is a part of some instructions. + if (const LoadInst *LI = dyn_cast(this)) + return LI->isVolatile() == cast(I)->isVolatile(); + if (const StoreInst *SI = dyn_cast(this)) + return SI->isVolatile() == cast(I)->isVolatile(); + if (const CmpInst *CI = dyn_cast(this)) + return CI->getPredicate() == cast(I)->getPredicate(); + if (const CallInst *CI = dyn_cast(this)) + return CI->isTailCall() == cast(I)->isTailCall(); + return true; +} + +// isSameOperationAs +bool Instruction::isSameOperationAs(Instruction *I) const { + if (getOpcode() != I->getOpcode() || getType() != I->getType() || + getNumOperands() != I->getNumOperands()) + return false; + + // We have two instructions of identical opcode and #operands. Check to see + // if all operands are the same type + for (unsigned i = 0, e = getNumOperands(); i != e; ++i) + if (getOperand(i)->getType() != I->getOperand(i)->getType()) + return false; + + // Check special state that is a part of some instructions. + if (const LoadInst *LI = dyn_cast(this)) + return LI->isVolatile() == cast(I)->isVolatile(); + if (const StoreInst *SI = dyn_cast(this)) + return SI->isVolatile() == cast(I)->isVolatile(); + if (const CmpInst *CI = dyn_cast(this)) + return CI->getPredicate() == cast(I)->getPredicate(); + if (const CallInst *CI = dyn_cast(this)) + return CI->isTailCall() == cast(I)->isTailCall(); + + return true; +} + +/// mayWriteToMemory - Return true if this instruction may modify memory. +/// +bool Instruction::mayWriteToMemory() const { + switch (getOpcode()) { + default: return false; + case Instruction::Free: + case Instruction::Invoke: + case Instruction::Store: + case Instruction::VAArg: + return true; + case Instruction::Call: + return !cast(this)->onlyReadsMemory(); + case Instruction::Load: + return cast(this)->isVolatile(); + } +} /// isAssociative - Return true if the instruction is associative: /// @@ -118,11 +223,12 @@ const char *Instruction::getOpcodeName(unsigned OpCode) { /// 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(); - } + if (Opcode == And || Opcode == Or || Opcode == Xor) + return true; + + // Add/Mul reassociate unless they are FP or FP vectors. + if (Opcode == Add || Opcode == Mul) + return !Ty->isFPOrFPVector(); return 0; } @@ -137,40 +243,25 @@ bool Instruction::isCommutative(unsigned op) { switch (op) { case Add: case Mul: - case And: + 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 UDiv: + case SDiv: + case FDiv: + case URem: + case SRem: + case FRem: case Load: case Store: case Call: