X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=lib%2FVMCore%2FInstruction.cpp;h=6f09c907083831999419926d97aa3a568589c4c1;hb=0e4b6c7551776a801fa3caf9e05f47b5c8e001dc;hp=2a4812831a169e4dacdc3ba5dc4057f046446e2f;hpb=fd93908ae8b9684fe71c239e3c6cfe13ff6a2663;p=oota-llvm.git diff --git a/lib/VMCore/Instruction.cpp b/lib/VMCore/Instruction.cpp index 2a4812831a1..6f09c907083 100644 --- a/lib/VMCore/Instruction.cpp +++ b/lib/VMCore/Instruction.cpp @@ -2,8 +2,8 @@ // // 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. // //===----------------------------------------------------------------------===// // @@ -11,16 +11,16 @@ // //===----------------------------------------------------------------------===// +#include "llvm/Type.h" #include "llvm/Instructions.h" #include "llvm/Function.h" -#include "llvm/SymbolTable.h" -#include "llvm/Type.h" +#include "llvm/Support/CallSite.h" #include "llvm/Support/LeakDetector.h" using namespace llvm; Instruction::Instruction(const Type *ty, unsigned it, Use *Ops, unsigned NumOps, - const std::string &Name, Instruction *InsertBefore) - : User(ty, Value::InstructionVal + it, Ops, NumOps, Name), Parent(0) { + Instruction *InsertBefore) + : User(ty, Value::InstructionVal + it, Ops, NumOps), Parent(0) { // Make sure that we get added to a basicblock LeakDetector::addGarbageObject(this); @@ -33,8 +33,8 @@ Instruction::Instruction(const Type *ty, unsigned it, Use *Ops, unsigned NumOps, } Instruction::Instruction(const Type *ty, unsigned it, Use *Ops, unsigned NumOps, - const std::string &Name, BasicBlock *InsertAtEnd) - : User(ty, Value::InstructionVal + it, Ops, NumOps, Name), Parent(0) { + BasicBlock *InsertAtEnd) + : User(ty, Value::InstructionVal + it, Ops, NumOps), Parent(0) { // Make sure that we get added to a basicblock LeakDetector::addGarbageObject(this); @@ -43,10 +43,13 @@ Instruction::Instruction(const Type *ty, unsigned it, Use *Ops, unsigned NumOps, InsertAtEnd->getInstList().push_back(this); } -void Instruction::setOpcode(unsigned opc) { - setValueType(Value::InstructionVal + opc); + +// 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); @@ -65,6 +68,15 @@ 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); +} + + const char *Instruction::getOpcodeName(unsigned OpCode) { switch (OpCode) { // Terminators @@ -79,22 +91,18 @@ const char *Instruction::getOpcodeName(unsigned OpCode) { 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"; @@ -103,15 +111,34 @@ const char *Instruction::getOpcodeName(unsigned OpCode) { 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 Select: return "select"; - 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 " "; } @@ -139,11 +166,54 @@ bool Instruction::isIdenticalTo(Instruction *I) const { return LI->isVolatile() == cast(I)->isVolatile(); if (const StoreInst *SI = dyn_cast(this)) return SI->isVolatile() == cast(I)->isVolatile(); - if (const VANextInst *VAN = dyn_cast(this)) - return VAN->getArgType() == cast(I)->getArgType(); + 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: /// @@ -153,11 +223,12 @@ bool Instruction::isIdenticalTo(Instruction *I) const { /// 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; } @@ -175,41 +246,27 @@ bool Instruction::isCommutative(unsigned op) { 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: case Invoke: + case VAArg: return true; default: return false;