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250 lines
8.9 KiB
C++
250 lines
8.9 KiB
C++
//===-- llvm/InstrinsicInst.h - Intrinsic Instruction Wrappers --*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file was developed by the LLVM research group and is distributed under
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// the University of Illinois Open Source License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file defines classes that make it really easy to deal with intrinsic
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// functions with the isa/dyncast family of functions. In particular, this
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// allows you to do things like:
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//
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// if (MemCpyInst *MCI = dyn_cast<MemCpyInst>(Inst))
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// ... MCI->getDest() ... MCI->getSource() ...
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//
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// All intrinsic function calls are instances of the call instruction, so these
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// are all subclasses of the CallInst class. Note that none of these classes
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// has state or virtual methods, which is an important part of this gross/neat
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// hack working.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_INTRINSICINST_H
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#define LLVM_INTRINSICINST_H
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#include "llvm/Constants.h"
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#include "llvm/Function.h"
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#include "llvm/Instructions.h"
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#include "llvm/Intrinsics.h"
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namespace llvm {
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class IntrinsicInst : public CallInst {
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IntrinsicInst(); // DO NOT IMPLEMENT
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IntrinsicInst(const IntrinsicInst&); // DO NOT IMPLEMENT
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void operator=(const IntrinsicInst&); // DO NOT IMPLEMENT
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public:
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/// StripPointerCasts - This static method strips off any unneeded pointer
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/// casts from the specified value, returning the original uncasted value.
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/// Note that the returned value is guaranteed to have pointer type.
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static Value *StripPointerCasts(Value *Ptr);
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};
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/// DbgInfoIntrinsic - This is the common base class for debug info intrinsics
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///
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struct DbgInfoIntrinsic : public IntrinsicInst {
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Value *getChain() const { return const_cast<Value*>(getOperand(1)); }
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// Methods for support type inquiry through isa, cast, and dyn_cast:
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static inline bool classof(const DbgInfoIntrinsic *) { return true; }
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static inline bool classof(const CallInst *I) {
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if (const Function *CF = I->getCalledFunction())
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switch (CF->getIntrinsicID()) {
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case Intrinsic::dbg_stoppoint:
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case Intrinsic::dbg_region_start:
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case Intrinsic::dbg_region_end:
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case Intrinsic::dbg_func_start:
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case Intrinsic::dbg_declare:
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return true;
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default: break;
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}
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return false;
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}
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static inline bool classof(const Value *V) {
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return isa<CallInst>(V) && classof(cast<CallInst>(V));
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}
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};
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/// DbgStopPointInst - This represent llvm.dbg.stoppoint instructions.
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///
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struct DbgStopPointInst : public DbgInfoIntrinsic {
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unsigned getLineNo() const {
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return unsigned(cast<ConstantInt>(getOperand(2))->getRawValue());
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}
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unsigned getColNo() const {
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return unsigned(cast<ConstantInt>(getOperand(3))->getRawValue());
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}
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Value *getContext() const { return const_cast<Value*>(getOperand(4)); }
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// Methods for support type inquiry through isa, cast, and dyn_cast:
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static inline bool classof(const DbgStopPointInst *) { return true; }
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static inline bool classof(const CallInst *I) {
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if (const Function *CF = I->getCalledFunction())
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return CF->getIntrinsicID() == Intrinsic::dbg_stoppoint;
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return false;
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}
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static inline bool classof(const Value *V) {
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return isa<CallInst>(V) && classof(cast<CallInst>(V));
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}
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};
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/// MemIntrinsic - This is the common base class for memset/memcpy/memmove.
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///
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struct MemIntrinsic : public IntrinsicInst {
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Value *getRawDest() const { return const_cast<Value*>(getOperand(1)); }
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Value *getLength() const { return const_cast<Value*>(getOperand(3)); }
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ConstantInt *getAlignment() const {
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return cast<ConstantInt>(const_cast<Value*>(getOperand(4)));
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}
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/// getDest - This is just like getRawDest, but it strips off any cast
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/// instructions that feed it, giving the original input. The returned
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/// value is guaranteed to be a pointer.
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Value *getDest() const { return StripPointerCasts(getRawDest()); }
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/// set* - Set the specified arguments of the instruction.
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///
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void setDest(Value *Ptr) {
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assert(getRawDest()->getType() == Ptr->getType() &&
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"setDest called with pointer of wrong type!");
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setOperand(1, Ptr);
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}
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void setLength(Value *L) {
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assert(getLength()->getType() == L->getType() &&
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"setLength called with value of wrong type!");
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setOperand(3, L);
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}
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void setAlignment(ConstantInt *A) {
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assert(getAlignment()->getType() == A->getType() &&
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"setAlignment called with value of wrong type!");
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setOperand(4, A);
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}
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// Methods for support type inquiry through isa, cast, and dyn_cast:
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static inline bool classof(const MemIntrinsic *) { return true; }
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static inline bool classof(const CallInst *I) {
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if (const Function *CF = I->getCalledFunction())
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switch (CF->getIntrinsicID()) {
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case Intrinsic::memcpy:
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case Intrinsic::memmove:
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case Intrinsic::memset:
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return true;
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default: break;
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}
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return false;
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}
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static inline bool classof(const Value *V) {
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return isa<CallInst>(V) && classof(cast<CallInst>(V));
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}
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};
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/// MemCpyInst - This class wraps the llvm.memcpy intrinsic.
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///
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struct MemCpyInst : public MemIntrinsic {
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/// get* - Return the arguments to the instruction.
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///
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Value *getRawSource() const { return const_cast<Value*>(getOperand(2)); }
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/// getSource - This is just like getRawSource, but it strips off any cast
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/// instructions that feed it, giving the original input. The returned
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/// value is guaranteed to be a pointer.
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Value *getSource() const { return StripPointerCasts(getRawSource()); }
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void setSource(Value *Ptr) {
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assert(getRawSource()->getType() == Ptr->getType() &&
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"setSource called with pointer of wrong type!");
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setOperand(2, Ptr);
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}
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// Methods for support type inquiry through isa, cast, and dyn_cast:
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static inline bool classof(const MemCpyInst *) { return true; }
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static inline bool classof(const MemIntrinsic *I) {
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return I->getCalledFunction()->getIntrinsicID() == Intrinsic::memcpy;
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}
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static inline bool classof(const CallInst *I) {
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if (const Function *CF = I->getCalledFunction())
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if (CF->getIntrinsicID() == Intrinsic::memcpy)
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return true;
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return false;
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}
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static inline bool classof(const Value *V) {
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return isa<CallInst>(V) && classof(cast<CallInst>(V));
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}
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};
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/// MemMoveInst - This class wraps the llvm.memmove intrinsic.
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///
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struct MemMoveInst : public MemIntrinsic {
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/// get* - Return the arguments to the instruction.
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///
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Value *getRawSource() const { return const_cast<Value*>(getOperand(2)); }
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/// getSource - This is just like getRawSource, but it strips off any cast
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/// instructions that feed it, giving the original input. The returned
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/// value is guaranteed to be a pointer.
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Value *getSource() const { return StripPointerCasts(getRawSource()); }
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void setSource(Value *Ptr) {
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assert(getRawSource()->getType() == Ptr->getType() &&
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"setSource called with pointer of wrong type!");
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setOperand(2, Ptr);
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}
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// Methods for support type inquiry through isa, cast, and dyn_cast:
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static inline bool classof(const MemMoveInst *) { return true; }
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static inline bool classof(const MemIntrinsic *I) {
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return I->getCalledFunction()->getIntrinsicID() == Intrinsic::memmove;
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}
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static inline bool classof(const CallInst *I) {
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if (const Function *CF = I->getCalledFunction())
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if (CF->getIntrinsicID() == Intrinsic::memmove)
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return true;
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return false;
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}
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static inline bool classof(const Value *V) {
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return isa<CallInst>(V) && classof(cast<CallInst>(V));
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}
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};
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/// MemSetInst - This class wraps the llvm.memcpy intrinsic.
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///
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struct MemSetInst : public MemIntrinsic {
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/// get* - Return the arguments to the instruction.
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///
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Value *getValue() const { return const_cast<Value*>(getOperand(2)); }
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void setValue(Value *Val) {
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assert(getValue()->getType() == Val->getType() &&
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"setSource called with pointer of wrong type!");
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setOperand(2, Val);
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}
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// Methods for support type inquiry through isa, cast, and dyn_cast:
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static inline bool classof(const MemSetInst *) { return true; }
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static inline bool classof(const MemIntrinsic *I) {
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return I->getCalledFunction()->getIntrinsicID() == Intrinsic::memset;
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}
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static inline bool classof(const CallInst *I) {
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if (const Function *CF = I->getCalledFunction())
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if (CF->getIntrinsicID() == Intrinsic::memset)
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return true;
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return false;
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}
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static inline bool classof(const Value *V) {
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return isa<CallInst>(V) && classof(cast<CallInst>(V));
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}
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};
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}
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#endif
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