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These complement many of the existing accessors and make it significantly easier to write code which needs to poke at the underlying Use without hard coding the operand number at which it resides for a particular instruction. No functionality changed of course. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@202102 91177308-0d34-0410-b5e6-96231b3b80d8
326 lines
11 KiB
C++
326 lines
11 KiB
C++
//===-- llvm/IntrinsicInst.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 is distributed under the University of Illinois Open Source
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// 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_IR_INTRINSICINST_H
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#define LLVM_IR_INTRINSICINST_H
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#include "llvm/IR/Constants.h"
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#include "llvm/IR/Function.h"
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#include "llvm/IR/Instructions.h"
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#include "llvm/IR/Intrinsics.h"
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namespace llvm {
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/// IntrinsicInst - A useful wrapper class for inspecting calls to intrinsic
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/// functions. This allows the standard isa/dyncast/cast functionality to
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/// work with calls to intrinsic functions.
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class IntrinsicInst : public CallInst {
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IntrinsicInst() LLVM_DELETED_FUNCTION;
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IntrinsicInst(const IntrinsicInst&) LLVM_DELETED_FUNCTION;
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void operator=(const IntrinsicInst&) LLVM_DELETED_FUNCTION;
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public:
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/// getIntrinsicID - Return the intrinsic ID of this intrinsic.
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///
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Intrinsic::ID getIntrinsicID() const {
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return (Intrinsic::ID)getCalledFunction()->getIntrinsicID();
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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 CallInst *I) {
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if (const Function *CF = I->getCalledFunction())
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return CF->isIntrinsic();
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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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/// DbgInfoIntrinsic - This is the common base class for debug info intrinsics
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///
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class DbgInfoIntrinsic : public IntrinsicInst {
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public:
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// Methods for support type inquiry through isa, cast, and dyn_cast:
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static inline bool classof(const IntrinsicInst *I) {
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switch (I->getIntrinsicID()) {
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case Intrinsic::dbg_declare:
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case Intrinsic::dbg_value:
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return true;
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default: return false;
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}
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}
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static inline bool classof(const Value *V) {
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return isa<IntrinsicInst>(V) && classof(cast<IntrinsicInst>(V));
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}
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static Value *StripCast(Value *C);
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};
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/// DbgDeclareInst - This represents the llvm.dbg.declare instruction.
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///
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class DbgDeclareInst : public DbgInfoIntrinsic {
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public:
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Value *getAddress() const;
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MDNode *getVariable() const { return cast<MDNode>(getArgOperand(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 IntrinsicInst *I) {
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return I->getIntrinsicID() == Intrinsic::dbg_declare;
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}
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static inline bool classof(const Value *V) {
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return isa<IntrinsicInst>(V) && classof(cast<IntrinsicInst>(V));
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}
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};
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/// DbgValueInst - This represents the llvm.dbg.value instruction.
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///
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class DbgValueInst : public DbgInfoIntrinsic {
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public:
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const Value *getValue() const;
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Value *getValue();
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uint64_t getOffset() const {
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return cast<ConstantInt>(
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const_cast<Value*>(getArgOperand(1)))->getZExtValue();
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}
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MDNode *getVariable() const { return cast<MDNode>(getArgOperand(2)); }
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// Methods for support type inquiry through isa, cast, and dyn_cast:
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static inline bool classof(const IntrinsicInst *I) {
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return I->getIntrinsicID() == Intrinsic::dbg_value;
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}
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static inline bool classof(const Value *V) {
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return isa<IntrinsicInst>(V) && classof(cast<IntrinsicInst>(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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class MemIntrinsic : public IntrinsicInst {
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public:
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Value *getRawDest() const { return const_cast<Value*>(getArgOperand(0)); }
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const Use &getRawDestUse() const { return getArgOperandUse(0); }
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Use &getRawDestUse() { return getArgOperandUse(0); }
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Value *getLength() const { return const_cast<Value*>(getArgOperand(2)); }
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const Use &getLengthUse() const { return getArgOperandUse(2); }
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Use &getLengthUse() { return getArgOperandUse(2); }
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ConstantInt *getAlignmentCst() const {
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return cast<ConstantInt>(const_cast<Value*>(getArgOperand(3)));
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}
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unsigned getAlignment() const {
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return getAlignmentCst()->getZExtValue();
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}
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ConstantInt *getVolatileCst() const {
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return cast<ConstantInt>(const_cast<Value*>(getArgOperand(4)));
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}
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bool isVolatile() const {
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return !getVolatileCst()->isZero();
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}
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unsigned getDestAddressSpace() const {
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return cast<PointerType>(getRawDest()->getType())->getAddressSpace();
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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 getRawDest()->stripPointerCasts(); }
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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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setArgOperand(0, 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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setArgOperand(2, L);
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}
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void setAlignment(Constant* A) {
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setArgOperand(3, A);
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}
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void setVolatile(Constant* V) {
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setArgOperand(4, V);
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}
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Type *getAlignmentType() const {
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return getArgOperand(3)->getType();
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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 IntrinsicInst *I) {
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switch (I->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: return false;
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}
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}
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static inline bool classof(const Value *V) {
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return isa<IntrinsicInst>(V) && classof(cast<IntrinsicInst>(V));
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}
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};
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/// MemSetInst - This class wraps the llvm.memset intrinsic.
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///
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class MemSetInst : public MemIntrinsic {
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public:
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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*>(getArgOperand(1)); }
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const Use &getValueUse() const { return getArgOperandUse(1); }
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Use &getValueUse() { return getArgOperandUse(1); }
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void setValue(Value *Val) {
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assert(getValue()->getType() == Val->getType() &&
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"setValue called with value of wrong type!");
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setArgOperand(1, 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 IntrinsicInst *I) {
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return I->getIntrinsicID() == Intrinsic::memset;
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}
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static inline bool classof(const Value *V) {
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return isa<IntrinsicInst>(V) && classof(cast<IntrinsicInst>(V));
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}
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};
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/// MemTransferInst - This class wraps the llvm.memcpy/memmove intrinsics.
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///
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class MemTransferInst : public MemIntrinsic {
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public:
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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*>(getArgOperand(1)); }
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const Use &getRawSourceUse() const { return getArgOperandUse(1); }
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Use &getRawSourceUse() { return getArgOperandUse(1); }
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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 getRawSource()->stripPointerCasts(); }
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unsigned getSourceAddressSpace() const {
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return cast<PointerType>(getRawSource()->getType())->getAddressSpace();
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}
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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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setArgOperand(1, 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 IntrinsicInst *I) {
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return I->getIntrinsicID() == Intrinsic::memcpy ||
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I->getIntrinsicID() == Intrinsic::memmove;
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}
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static inline bool classof(const Value *V) {
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return isa<IntrinsicInst>(V) && classof(cast<IntrinsicInst>(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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class MemCpyInst : public MemTransferInst {
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public:
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// Methods for support type inquiry through isa, cast, and dyn_cast:
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static inline bool classof(const IntrinsicInst *I) {
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return I->getIntrinsicID() == Intrinsic::memcpy;
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}
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static inline bool classof(const Value *V) {
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return isa<IntrinsicInst>(V) && classof(cast<IntrinsicInst>(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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class MemMoveInst : public MemTransferInst {
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public:
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// Methods for support type inquiry through isa, cast, and dyn_cast:
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static inline bool classof(const IntrinsicInst *I) {
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return I->getIntrinsicID() == Intrinsic::memmove;
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}
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static inline bool classof(const Value *V) {
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return isa<IntrinsicInst>(V) && classof(cast<IntrinsicInst>(V));
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}
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};
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/// VAStartInst - This represents the llvm.va_start intrinsic.
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///
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class VAStartInst : public IntrinsicInst {
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public:
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static inline bool classof(const IntrinsicInst *I) {
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return I->getIntrinsicID() == Intrinsic::vastart;
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}
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static inline bool classof(const Value *V) {
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return isa<IntrinsicInst>(V) && classof(cast<IntrinsicInst>(V));
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}
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Value *getArgList() const { return const_cast<Value*>(getArgOperand(0)); }
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};
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/// VAEndInst - This represents the llvm.va_end intrinsic.
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///
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class VAEndInst : public IntrinsicInst {
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public:
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static inline bool classof(const IntrinsicInst *I) {
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return I->getIntrinsicID() == Intrinsic::vaend;
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}
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static inline bool classof(const Value *V) {
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return isa<IntrinsicInst>(V) && classof(cast<IntrinsicInst>(V));
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}
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Value *getArgList() const { return const_cast<Value*>(getArgOperand(0)); }
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};
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/// VACopyInst - This represents the llvm.va_copy intrinsic.
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///
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class VACopyInst : public IntrinsicInst {
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public:
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static inline bool classof(const IntrinsicInst *I) {
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return I->getIntrinsicID() == Intrinsic::vacopy;
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}
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static inline bool classof(const Value *V) {
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return isa<IntrinsicInst>(V) && classof(cast<IntrinsicInst>(V));
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}
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Value *getDest() const { return const_cast<Value*>(getArgOperand(0)); }
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Value *getSrc() const { return const_cast<Value*>(getArgOperand(1)); }
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};
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}
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#endif
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