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427 lines
14 KiB
C++
427 lines
14 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/DerivedTypes.h"
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#include "llvm/IR/Function.h"
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#include "llvm/IR/GlobalVariable.h"
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#include "llvm/IR/Instructions.h"
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#include "llvm/IR/Intrinsics.h"
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#include "llvm/IR/Metadata.h"
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#include "llvm/IR/Value.h"
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#include "llvm/Support/Casting.h"
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#include <cassert>
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#include <cstdint>
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namespace llvm {
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/// A wrapper class for inspecting calls to intrinsic functions.
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/// This allows the standard isa/dyncast/cast functionality to work with calls
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/// to intrinsic functions.
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class IntrinsicInst : public CallInst {
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public:
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IntrinsicInst() = delete;
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IntrinsicInst(const IntrinsicInst &) = delete;
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IntrinsicInst &operator=(const IntrinsicInst &) = delete;
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/// Return the intrinsic ID of this intrinsic.
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Intrinsic::ID getIntrinsicID() const {
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return 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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/// This is the common base class for debug info intrinsics.
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class DbgInfoIntrinsic : public IntrinsicInst {
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public:
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/// Get the location corresponding to the variable referenced by the debug
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/// info intrinsic. Depending on the intrinsic, this could be the
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/// variable's value or its address.
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Value *getVariableLocation(bool AllowNullOp = true) const;
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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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};
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/// This represents the llvm.dbg.declare instruction.
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class DbgDeclareInst : public DbgInfoIntrinsic {
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public:
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Value *getAddress() const { return getVariableLocation(); }
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DILocalVariable *getVariable() const {
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return cast<DILocalVariable>(getRawVariable());
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}
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DIExpression *getExpression() const {
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return cast<DIExpression>(getRawExpression());
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}
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Metadata *getRawVariable() const {
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return cast<MetadataAsValue>(getArgOperand(1))->getMetadata();
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}
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Metadata *getRawExpression() const {
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return cast<MetadataAsValue>(getArgOperand(2))->getMetadata();
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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::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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/// This represents the llvm.dbg.value instruction.
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class DbgValueInst : public DbgInfoIntrinsic {
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public:
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Value *getValue() const {
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return getVariableLocation(/* AllowNullOp = */ false);
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}
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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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DILocalVariable *getVariable() const {
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return cast<DILocalVariable>(getRawVariable());
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}
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DIExpression *getExpression() const {
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return cast<DIExpression>(getRawExpression());
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}
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Metadata *getRawVariable() const {
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return cast<MetadataAsValue>(getArgOperand(2))->getMetadata();
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}
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Metadata *getRawExpression() const {
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return cast<MetadataAsValue>(getArgOperand(3))->getMetadata();
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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::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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/// This is the common base class for memset/memcpy/memmove.
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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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/// 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 the specified arguments of the instruction.
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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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/// This class wraps the llvm.memset intrinsic.
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class MemSetInst : public MemIntrinsic {
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public:
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/// Return the arguments to the instruction.
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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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/// This class wraps the llvm.memcpy/memmove intrinsics.
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class MemTransferInst : public MemIntrinsic {
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public:
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/// Return the arguments to the instruction.
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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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/// 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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/// This class wraps the llvm.memcpy intrinsic.
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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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/// This class wraps the llvm.memmove intrinsic.
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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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/// This represents the llvm.va_start intrinsic.
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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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/// This represents the llvm.va_end intrinsic.
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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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/// This represents the llvm.va_copy intrinsic.
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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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/// This represents the llvm.instrprof_increment intrinsic.
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class InstrProfIncrementInst : 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::instrprof_increment;
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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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GlobalVariable *getName() const {
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return cast<GlobalVariable>(
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const_cast<Value *>(getArgOperand(0))->stripPointerCasts());
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}
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ConstantInt *getHash() const {
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return cast<ConstantInt>(const_cast<Value *>(getArgOperand(1)));
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}
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ConstantInt *getNumCounters() const {
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return cast<ConstantInt>(const_cast<Value *>(getArgOperand(2)));
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}
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ConstantInt *getIndex() const {
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return cast<ConstantInt>(const_cast<Value *>(getArgOperand(3)));
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}
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Value *getStep() const;
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};
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class InstrProfIncrementInstStep : public InstrProfIncrementInst {
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public:
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static inline bool classof(const IntrinsicInst *I) {
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return I->getIntrinsicID() == Intrinsic::instrprof_increment_step;
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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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/// This represents the llvm.instrprof_value_profile intrinsic.
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class InstrProfValueProfileInst : 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::instrprof_value_profile;
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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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GlobalVariable *getName() const {
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return cast<GlobalVariable>(
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const_cast<Value *>(getArgOperand(0))->stripPointerCasts());
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}
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ConstantInt *getHash() const {
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return cast<ConstantInt>(const_cast<Value *>(getArgOperand(1)));
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}
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Value *getTargetValue() const {
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return cast<Value>(const_cast<Value *>(getArgOperand(2)));
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}
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ConstantInt *getValueKind() const {
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return cast<ConstantInt>(const_cast<Value *>(getArgOperand(3)));
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}
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// Returns the value site index.
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ConstantInt *getIndex() const {
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return cast<ConstantInt>(const_cast<Value *>(getArgOperand(4)));
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}
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};
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} // end namespace llvm
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#endif // LLVM_IR_INTRINSICINST_H
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