mirror of
https://github.com/RPCS3/llvm-mirror.git
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6e34ef887b
First in a series of patches to convert SetCondInst into ICmpInst and FCmpInst using only two opcodes and having the instructions contain their predicate value. Nothing uses these classes yet. More patches to follow. llvm-svn: 31867
1776 lines
68 KiB
C++
1776 lines
68 KiB
C++
//===-- llvm/Instructions.h - Instruction subclass definitions --*- 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 exposes the class definitions of all of the subclasses of the
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// Instruction class. This is meant to be an easy way to get access to all
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// instruction subclasses.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_INSTRUCTIONS_H
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#define LLVM_INSTRUCTIONS_H
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#include "llvm/InstrTypes.h"
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namespace llvm {
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class BasicBlock;
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class ConstantInt;
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class PointerType;
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class PackedType;
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//===----------------------------------------------------------------------===//
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// AllocationInst Class
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//===----------------------------------------------------------------------===//
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/// AllocationInst - This class is the common base class of MallocInst and
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/// AllocaInst.
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///
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class AllocationInst : public UnaryInstruction {
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unsigned Alignment;
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protected:
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AllocationInst(const Type *Ty, Value *ArraySize, unsigned iTy, unsigned Align,
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const std::string &Name = "", Instruction *InsertBefore = 0);
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AllocationInst(const Type *Ty, Value *ArraySize, unsigned iTy, unsigned Align,
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const std::string &Name, BasicBlock *InsertAtEnd);
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public:
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// Out of line virtual method, so the vtable, etc has a home.
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virtual ~AllocationInst();
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/// isArrayAllocation - Return true if there is an allocation size parameter
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/// to the allocation instruction that is not 1.
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///
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bool isArrayAllocation() const;
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/// getArraySize - Get the number of element allocated, for a simple
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/// allocation of a single element, this will return a constant 1 value.
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///
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inline const Value *getArraySize() const { return getOperand(0); }
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inline Value *getArraySize() { return getOperand(0); }
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/// getType - Overload to return most specific pointer type
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///
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inline const PointerType *getType() const {
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return reinterpret_cast<const PointerType*>(Instruction::getType());
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}
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/// getAllocatedType - Return the type that is being allocated by the
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/// instruction.
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///
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const Type *getAllocatedType() const;
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/// getAlignment - Return the alignment of the memory that is being allocated
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/// by the instruction.
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///
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unsigned getAlignment() const { return Alignment; }
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void setAlignment(unsigned Align) {
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assert((Align & (Align-1)) == 0 && "Alignment is not a power of 2!");
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Alignment = Align;
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}
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virtual Instruction *clone() const = 0;
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// Methods for support type inquiry through isa, cast, and dyn_cast:
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static inline bool classof(const AllocationInst *) { return true; }
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static inline bool classof(const Instruction *I) {
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return I->getOpcode() == Instruction::Alloca ||
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I->getOpcode() == Instruction::Malloc;
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}
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static inline bool classof(const Value *V) {
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return isa<Instruction>(V) && classof(cast<Instruction>(V));
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}
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};
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//===----------------------------------------------------------------------===//
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// MallocInst Class
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//===----------------------------------------------------------------------===//
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/// MallocInst - an instruction to allocated memory on the heap
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///
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class MallocInst : public AllocationInst {
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MallocInst(const MallocInst &MI);
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public:
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explicit MallocInst(const Type *Ty, Value *ArraySize = 0,
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const std::string &Name = "",
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Instruction *InsertBefore = 0)
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: AllocationInst(Ty, ArraySize, Malloc, 0, Name, InsertBefore) {}
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MallocInst(const Type *Ty, Value *ArraySize, const std::string &Name,
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BasicBlock *InsertAtEnd)
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: AllocationInst(Ty, ArraySize, Malloc, 0, Name, InsertAtEnd) {}
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MallocInst(const Type *Ty, const std::string &Name,
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Instruction *InsertBefore = 0)
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: AllocationInst(Ty, 0, Malloc, 0, Name, InsertBefore) {}
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MallocInst(const Type *Ty, const std::string &Name, BasicBlock *InsertAtEnd)
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: AllocationInst(Ty, 0, Malloc, 0, Name, InsertAtEnd) {}
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MallocInst(const Type *Ty, Value *ArraySize, unsigned Align,
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const std::string &Name, BasicBlock *InsertAtEnd)
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: AllocationInst(Ty, ArraySize, Malloc, Align, Name, InsertAtEnd) {}
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MallocInst(const Type *Ty, Value *ArraySize, unsigned Align,
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const std::string &Name = "",
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Instruction *InsertBefore = 0)
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: AllocationInst(Ty, ArraySize, Malloc, Align, Name, InsertBefore) {}
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virtual MallocInst *clone() 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 MallocInst *) { return true; }
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static inline bool classof(const Instruction *I) {
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return (I->getOpcode() == Instruction::Malloc);
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}
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static inline bool classof(const Value *V) {
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return isa<Instruction>(V) && classof(cast<Instruction>(V));
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}
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};
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//===----------------------------------------------------------------------===//
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// AllocaInst Class
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//===----------------------------------------------------------------------===//
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/// AllocaInst - an instruction to allocate memory on the stack
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///
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class AllocaInst : public AllocationInst {
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AllocaInst(const AllocaInst &);
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public:
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explicit AllocaInst(const Type *Ty, Value *ArraySize = 0,
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const std::string &Name = "",
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Instruction *InsertBefore = 0)
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: AllocationInst(Ty, ArraySize, Alloca, 0, Name, InsertBefore) {}
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AllocaInst(const Type *Ty, Value *ArraySize, const std::string &Name,
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BasicBlock *InsertAtEnd)
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: AllocationInst(Ty, ArraySize, Alloca, 0, Name, InsertAtEnd) {}
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AllocaInst(const Type *Ty, const std::string &Name,
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Instruction *InsertBefore = 0)
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: AllocationInst(Ty, 0, Alloca, 0, Name, InsertBefore) {}
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AllocaInst(const Type *Ty, const std::string &Name, BasicBlock *InsertAtEnd)
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: AllocationInst(Ty, 0, Alloca, 0, Name, InsertAtEnd) {}
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AllocaInst(const Type *Ty, Value *ArraySize, unsigned Align,
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const std::string &Name = "", Instruction *InsertBefore = 0)
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: AllocationInst(Ty, ArraySize, Alloca, Align, Name, InsertBefore) {}
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AllocaInst(const Type *Ty, Value *ArraySize, unsigned Align,
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const std::string &Name, BasicBlock *InsertAtEnd)
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: AllocationInst(Ty, ArraySize, Alloca, Align, Name, InsertAtEnd) {}
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virtual AllocaInst *clone() 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 AllocaInst *) { return true; }
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static inline bool classof(const Instruction *I) {
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return (I->getOpcode() == Instruction::Alloca);
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}
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static inline bool classof(const Value *V) {
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return isa<Instruction>(V) && classof(cast<Instruction>(V));
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}
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};
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//===----------------------------------------------------------------------===//
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// FreeInst Class
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//===----------------------------------------------------------------------===//
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/// FreeInst - an instruction to deallocate memory
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///
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class FreeInst : public UnaryInstruction {
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void AssertOK();
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public:
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explicit FreeInst(Value *Ptr, Instruction *InsertBefore = 0);
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FreeInst(Value *Ptr, BasicBlock *InsertAfter);
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virtual FreeInst *clone() const;
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virtual bool mayWriteToMemory() const { return true; }
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// Methods for support type inquiry through isa, cast, and dyn_cast:
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static inline bool classof(const FreeInst *) { return true; }
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static inline bool classof(const Instruction *I) {
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return (I->getOpcode() == Instruction::Free);
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}
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static inline bool classof(const Value *V) {
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return isa<Instruction>(V) && classof(cast<Instruction>(V));
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}
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};
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//===----------------------------------------------------------------------===//
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// LoadInst Class
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//===----------------------------------------------------------------------===//
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/// LoadInst - an instruction for reading from memory. This uses the
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/// SubclassData field in Value to store whether or not the load is volatile.
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///
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class LoadInst : public UnaryInstruction {
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LoadInst(const LoadInst &LI)
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: UnaryInstruction(LI.getType(), Load, LI.getOperand(0)) {
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setVolatile(LI.isVolatile());
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#ifndef NDEBUG
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AssertOK();
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#endif
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}
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void AssertOK();
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public:
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LoadInst(Value *Ptr, const std::string &Name, Instruction *InsertBefore);
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LoadInst(Value *Ptr, const std::string &Name, BasicBlock *InsertAtEnd);
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explicit LoadInst(Value *Ptr, const std::string &Name = "",
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bool isVolatile = false, Instruction *InsertBefore = 0);
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LoadInst(Value *Ptr, const std::string &Name, bool isVolatile,
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BasicBlock *InsertAtEnd);
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/// isVolatile - Return true if this is a load from a volatile memory
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/// location.
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///
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bool isVolatile() const { return SubclassData; }
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/// setVolatile - Specify whether this is a volatile load or not.
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///
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void setVolatile(bool V) { SubclassData = V; }
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virtual LoadInst *clone() const;
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virtual bool mayWriteToMemory() const { return isVolatile(); }
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Value *getPointerOperand() { return getOperand(0); }
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const Value *getPointerOperand() const { return getOperand(0); }
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static unsigned getPointerOperandIndex() { return 0U; }
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// Methods for support type inquiry through isa, cast, and dyn_cast:
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static inline bool classof(const LoadInst *) { return true; }
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static inline bool classof(const Instruction *I) {
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return I->getOpcode() == Instruction::Load;
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}
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static inline bool classof(const Value *V) {
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return isa<Instruction>(V) && classof(cast<Instruction>(V));
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}
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};
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//===----------------------------------------------------------------------===//
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// StoreInst Class
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//===----------------------------------------------------------------------===//
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/// StoreInst - an instruction for storing to memory
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///
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class StoreInst : public Instruction {
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Use Ops[2];
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StoreInst(const StoreInst &SI) : Instruction(SI.getType(), Store, Ops, 2) {
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Ops[0].init(SI.Ops[0], this);
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Ops[1].init(SI.Ops[1], this);
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setVolatile(SI.isVolatile());
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#ifndef NDEBUG
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AssertOK();
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#endif
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}
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void AssertOK();
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public:
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StoreInst(Value *Val, Value *Ptr, Instruction *InsertBefore);
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StoreInst(Value *Val, Value *Ptr, BasicBlock *InsertAtEnd);
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StoreInst(Value *Val, Value *Ptr, bool isVolatile = false,
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Instruction *InsertBefore = 0);
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StoreInst(Value *Val, Value *Ptr, bool isVolatile, BasicBlock *InsertAtEnd);
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/// isVolatile - Return true if this is a load from a volatile memory
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/// location.
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///
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bool isVolatile() const { return SubclassData; }
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/// setVolatile - Specify whether this is a volatile load or not.
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///
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void setVolatile(bool V) { SubclassData = V; }
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/// Transparently provide more efficient getOperand methods.
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Value *getOperand(unsigned i) const {
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assert(i < 2 && "getOperand() out of range!");
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return Ops[i];
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}
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void setOperand(unsigned i, Value *Val) {
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assert(i < 2 && "setOperand() out of range!");
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Ops[i] = Val;
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}
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unsigned getNumOperands() const { return 2; }
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virtual StoreInst *clone() const;
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virtual bool mayWriteToMemory() const { return true; }
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Value *getPointerOperand() { return getOperand(1); }
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const Value *getPointerOperand() const { return getOperand(1); }
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static unsigned getPointerOperandIndex() { return 1U; }
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// Methods for support type inquiry through isa, cast, and dyn_cast:
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static inline bool classof(const StoreInst *) { return true; }
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static inline bool classof(const Instruction *I) {
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return I->getOpcode() == Instruction::Store;
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}
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static inline bool classof(const Value *V) {
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return isa<Instruction>(V) && classof(cast<Instruction>(V));
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}
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};
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//===----------------------------------------------------------------------===//
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// GetElementPtrInst Class
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//===----------------------------------------------------------------------===//
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/// GetElementPtrInst - an instruction for type-safe pointer arithmetic to
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/// access elements of arrays and structs
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///
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class GetElementPtrInst : public Instruction {
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GetElementPtrInst(const GetElementPtrInst &GEPI)
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: Instruction(reinterpret_cast<const Type*>(GEPI.getType()), GetElementPtr,
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0, GEPI.getNumOperands()) {
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Use *OL = OperandList = new Use[NumOperands];
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Use *GEPIOL = GEPI.OperandList;
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for (unsigned i = 0, E = NumOperands; i != E; ++i)
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OL[i].init(GEPIOL[i], this);
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}
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void init(Value *Ptr, const std::vector<Value*> &Idx);
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void init(Value *Ptr, Value *Idx0, Value *Idx1);
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void init(Value *Ptr, Value *Idx);
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public:
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/// Constructors - Create a getelementptr instruction with a base pointer an
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/// list of indices. The first ctor can optionally insert before an existing
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/// instruction, the second appends the new instruction to the specified
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/// BasicBlock.
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GetElementPtrInst(Value *Ptr, const std::vector<Value*> &Idx,
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const std::string &Name = "", Instruction *InsertBefore =0);
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GetElementPtrInst(Value *Ptr, const std::vector<Value*> &Idx,
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const std::string &Name, BasicBlock *InsertAtEnd);
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/// Constructors - These two constructors are convenience methods because one
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/// and two index getelementptr instructions are so common.
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GetElementPtrInst(Value *Ptr, Value *Idx,
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const std::string &Name = "", Instruction *InsertBefore =0);
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GetElementPtrInst(Value *Ptr, Value *Idx,
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const std::string &Name, BasicBlock *InsertAtEnd);
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GetElementPtrInst(Value *Ptr, Value *Idx0, Value *Idx1,
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const std::string &Name = "", Instruction *InsertBefore =0);
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GetElementPtrInst(Value *Ptr, Value *Idx0, Value *Idx1,
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const std::string &Name, BasicBlock *InsertAtEnd);
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~GetElementPtrInst();
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virtual GetElementPtrInst *clone() const;
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// getType - Overload to return most specific pointer type...
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inline const PointerType *getType() const {
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return reinterpret_cast<const PointerType*>(Instruction::getType());
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}
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/// getIndexedType - Returns the type of the element that would be loaded with
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/// a load instruction with the specified parameters.
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///
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/// A null type is returned if the indices are invalid for the specified
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/// pointer type.
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///
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static const Type *getIndexedType(const Type *Ptr,
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const std::vector<Value*> &Indices,
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bool AllowStructLeaf = false);
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static const Type *getIndexedType(const Type *Ptr, Value *Idx0, Value *Idx1,
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bool AllowStructLeaf = false);
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static const Type *getIndexedType(const Type *Ptr, Value *Idx);
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inline op_iterator idx_begin() { return op_begin()+1; }
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inline const_op_iterator idx_begin() const { return op_begin()+1; }
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inline op_iterator idx_end() { return op_end(); }
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inline const_op_iterator idx_end() const { return op_end(); }
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Value *getPointerOperand() {
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return getOperand(0);
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}
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const Value *getPointerOperand() const {
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return getOperand(0);
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}
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static unsigned getPointerOperandIndex() {
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return 0U; // get index for modifying correct operand
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}
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inline unsigned getNumIndices() const { // Note: always non-negative
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return getNumOperands() - 1;
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}
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inline bool hasIndices() const {
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return getNumOperands() > 1;
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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 GetElementPtrInst *) { return true; }
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static inline bool classof(const Instruction *I) {
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return (I->getOpcode() == Instruction::GetElementPtr);
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}
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static inline bool classof(const Value *V) {
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return isa<Instruction>(V) && classof(cast<Instruction>(V));
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}
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};
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//===----------------------------------------------------------------------===//
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// ICmpInst Class
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//===----------------------------------------------------------------------===//
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/// This instruction compares its operands according to the predicate given
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/// to the constructor. It only operates on integers, pointers, or packed
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/// vectors of integrals. The two operands must be the same type.
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/// @brief Represent an integer comparison operator.
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class ICmpInst: public CmpInst {
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public:
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/// This enumeration lists the possible predicates for the ICmpInst. The
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/// values in the range 0-31 are reserved for FCmpInst while values in the
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/// range 32-64 are reserved for ICmpInst. This is necessary to ensure the
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/// predicate values are not overlapping between the classes.
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enum Predicate {
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ICMP_EQ = 32, ///< equal
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ICMP_NE = 33, ///< not equal
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ICMP_UGT = 34, ///< unsigned greater than
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ICMP_UGE = 35, ///< unsigned greater or equal
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ICMP_ULT = 36, ///< unsigned less than
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ICMP_ULE = 37, ///< unsigned less or equal
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ICMP_SGT = 38, ///< signed greater than
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ICMP_SGE = 39, ///< signed greater or equal
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ICMP_SLT = 40, ///< signed less than
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ICMP_SLE = 41, ///< signed less or equal
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FIRST_ICMP_PREDICATE = ICMP_EQ,
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LAST_ICMP_PREDICATE = ICMP_SLE
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};
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/// @brief Constructor with insert-before-instruction semantics.
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ICmpInst(
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Predicate pred, ///< The predicate to use for the comparison
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Value *LHS, ///< The left-hand-side of the expression
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Value *RHS, ///< The right-hand-side of the expression
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const std::string &Name = "", ///< Name of the instruction
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Instruction *InsertBefore = 0 ///< Where to insert
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) : CmpInst(Instruction::ICmp, pred, LHS, RHS, Name, InsertBefore) {
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}
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/// @brief Constructor with insert-at-block-end semantics.
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ICmpInst(
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Predicate pred, ///< The predicate to use for the comparison
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Value *LHS, ///< The left-hand-side of the expression
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Value *RHS, ///< The right-hand-side of the expression
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const std::string &Name, ///< Name of the instruction
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BasicBlock *InsertAtEnd ///< Block to insert into.
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) : CmpInst(Instruction::ICmp, pred, LHS, RHS, Name, InsertAtEnd) {
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}
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/// @brief Return the predicate for this instruction.
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Predicate getPredicate() const { return Predicate(SubclassData); }
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/// For example, EQ -> NE, UGT -> ULE, SLT -> SGE, etc.
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/// @returns the inverse predicate for the instruction's current predicate.
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/// @brief Return the inverse of the instruction's predicate.
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Predicate getInversePredicate() const {
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return getInversePredicate(getPredicate());
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}
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/// For example, EQ -> NE, UGT -> ULE, SLT -> SGE, etc.
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/// @returns the inverse predicate for predicate provided in \p pred.
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/// @brief Return the inverse of a given predicate
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static Predicate getInversePredicate(Predicate pred);
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/// For example, EQ->EQ, SLE->SGE, ULT->UGT, etc.
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/// @returns the predicate that would be the result of exchanging the two
|
|
/// operands of the ICmpInst instruction without changing the result
|
|
/// produced.
|
|
/// @brief Return the predicate as if the operands were swapped
|
|
Predicate getSwappedPredicate() const {
|
|
return getSwappedPredicate(getPredicate());
|
|
}
|
|
|
|
/// This is a static version that you can use without an instruction
|
|
/// available.
|
|
/// @brief Return the predicate as if the operands were swapped.
|
|
static Predicate getSwappedPredicate(Predicate Opcode);
|
|
|
|
/// This also tests for commutativity. If isEquality() returns true then
|
|
/// the predicate is also commutative. Only the equality predicates are
|
|
/// commutative.
|
|
/// @returns true if the predicate of this instruction is EQ or NE.
|
|
/// @brief Determine if this is an equality predicate.
|
|
bool isEquality() const {
|
|
return SubclassData == ICMP_EQ || SubclassData == ICMP_NE;
|
|
}
|
|
bool isCommutative() const { return isEquality(); }
|
|
|
|
/// @returns true if the predicate is relational (not EQ or NE).
|
|
/// @brief Determine if this a relational predicate.
|
|
bool isRelational() const {
|
|
return !isEquality();
|
|
}
|
|
|
|
/// Exchange the two operands to this instruction in such a way that it does
|
|
/// not modify the semantics of the instruction. The predicate value may be
|
|
/// changed to retain the same result if the predicate is order dependent
|
|
/// (e.g. ult).
|
|
/// @brief Swap operands and adjust predicate.
|
|
void swapOperands() {
|
|
SubclassData = getSwappedPredicate();
|
|
std::swap(Ops[0], Ops[1]);
|
|
}
|
|
|
|
// Methods for support type inquiry through isa, cast, and dyn_cast:
|
|
static inline bool classof(const ICmpInst *) { return true; }
|
|
static inline bool classof(const Instruction *I) {
|
|
return I->getOpcode() == Instruction::ICmp;
|
|
}
|
|
static inline bool classof(const Value *V) {
|
|
return isa<Instruction>(V) && classof(cast<Instruction>(V));
|
|
}
|
|
};
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// FCmpInst Class
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
/// This instruction compares its operands according to the predicate given
|
|
/// to the constructor. It only operates on floating point values or packed
|
|
/// vectors of floating point values. The operands must be identical types.
|
|
/// @brief Represents a floating point comparison operator.
|
|
class FCmpInst: public CmpInst {
|
|
public:
|
|
/// This enumeration lists the possible predicates for the FCmpInst. Values
|
|
/// in the range 0-31 are reserved for FCmpInst.
|
|
enum Predicate {
|
|
// Opcode U L G E Intuitive operation
|
|
FCMP_FALSE = 0, ///< 0 0 0 0 Always false (always folded)
|
|
FCMP_OEQ = 1, ///< 0 0 0 1 True if ordered and equal
|
|
FCMP_OGT = 2, ///< 0 0 1 0 True if ordered and greater than
|
|
FCMP_OGE = 3, ///< 0 0 1 1 True if ordered and greater than or equal
|
|
FCMP_OLT = 4, ///< 0 1 0 0 True if ordered and less than
|
|
FCMP_OLE = 5, ///< 0 1 0 1 True if ordered and less than or equal
|
|
FCMP_ONE = 6, ///< 0 1 1 0 True if ordered and operands are unequal
|
|
FCMP_ORD = 7, ///< 0 1 1 1 True if ordered (no nans)
|
|
FCMP_UNO = 8, ///< 1 0 0 0 True if unordered: isnan(X) | isnan(Y)
|
|
FCMP_UEQ = 9, ///< 1 0 0 1 True if unordered or equal
|
|
FCMP_UGT =10, ///< 1 0 1 0 True if unordered or greater than
|
|
FCMP_UGE =11, ///< 1 0 1 1 True if unordered, greater than, or equal
|
|
FCMP_ULT =12, ///< 1 1 0 0 True if unordered or less than
|
|
FCMP_ULE =13, ///< 1 1 0 1 True if unordered, less than, or equal
|
|
FCMP_UNE =14, ///< 1 1 1 0 True if unordered or not equal
|
|
FCMP_TRUE =15, ///< 1 1 1 1 Always true (always folded)
|
|
FIRST_FCMP_PREDICATE = FCMP_FALSE,
|
|
LAST_FCMP_PREDICATE = FCMP_TRUE
|
|
};
|
|
|
|
/// @brief Constructor with insert-before-instruction semantics.
|
|
FCmpInst(
|
|
Predicate pred, ///< The predicate to use for the comparison
|
|
Value *LHS, ///< The left-hand-side of the expression
|
|
Value *RHS, ///< The right-hand-side of the expression
|
|
const std::string &Name = "", ///< Name of the instruction
|
|
Instruction *InsertBefore = 0 ///< Where to insert
|
|
) : CmpInst(Instruction::FCmp, pred, LHS, RHS, Name, InsertBefore) {
|
|
}
|
|
|
|
/// @brief Constructor with insert-at-block-end semantics.
|
|
FCmpInst(
|
|
Predicate pred, ///< The predicate to use for the comparison
|
|
Value *LHS, ///< The left-hand-side of the expression
|
|
Value *RHS, ///< The right-hand-side of the expression
|
|
const std::string &Name, ///< Name of the instruction
|
|
BasicBlock *InsertAtEnd ///< Block to insert into.
|
|
) : CmpInst(Instruction::FCmp, pred, LHS, RHS, Name, InsertAtEnd) {
|
|
}
|
|
|
|
/// @brief Return the predicate for this instruction.
|
|
Predicate getPredicate() const { return Predicate(SubclassData); }
|
|
|
|
/// For example, OEQ -> UNE, UGT -> OLE, OLT -> UGE, etc.
|
|
/// @returns the inverse predicate for the instructions current predicate.
|
|
/// @brief Return the inverse of the predicate
|
|
Predicate getInversePredicate() const {
|
|
return getInversePredicate(getPredicate());
|
|
}
|
|
|
|
/// For example, OEQ -> UNE, UGT -> OLE, OLT -> UGE, etc.
|
|
/// @returns the inverse predicate for \p pred.
|
|
/// @brief Return the inverse of a given predicate
|
|
static Predicate getInversePredicate(Predicate pred);
|
|
|
|
/// For example, OEQ->OEQ, ULE->UGE, OLT->OGT, etc.
|
|
/// @returns the predicate that would be the result of exchanging the two
|
|
/// operands of the ICmpInst instruction without changing the result
|
|
/// produced.
|
|
/// @brief Return the predicate as if the operands were swapped
|
|
Predicate getSwappedPredicate() const {
|
|
return getSwappedPredicate(getPredicate());
|
|
}
|
|
|
|
/// This is a static version that you can use without an instruction
|
|
/// available.
|
|
/// @brief Return the predicate as if the operands were swapped.
|
|
static Predicate getSwappedPredicate(Predicate Opcode);
|
|
|
|
/// This also tests for commutativity. If isEquality() returns true then
|
|
/// the predicate is also commutative. Only the equality predicates are
|
|
/// commutative.
|
|
/// @returns true if the predicate of this instruction is EQ or NE.
|
|
/// @brief Determine if this is an equality predicate.
|
|
bool isEquality() const {
|
|
return SubclassData == FCMP_OEQ || SubclassData == FCMP_ONE ||
|
|
SubclassData == FCMP_UEQ || SubclassData == FCMP_UNE;
|
|
}
|
|
bool isCommutative() const { return isEquality(); }
|
|
|
|
/// @returns true if the predicate is relational (not EQ or NE).
|
|
/// @brief Determine if this a relational predicate.
|
|
bool isRelational() const { return !isEquality(); }
|
|
|
|
/// Exchange the two operands to this instruction in such a way that it does
|
|
/// not modify the semantics of the instruction. The predicate value may be
|
|
/// changed to retain the same result if the predicate is order dependent
|
|
/// (e.g. ult).
|
|
/// @brief Swap operands and adjust predicate.
|
|
void swapOperands() {
|
|
SubclassData = getSwappedPredicate();
|
|
std::swap(Ops[0], Ops[1]);
|
|
}
|
|
|
|
/// @brief Methods for support type inquiry through isa, cast, and dyn_cast:
|
|
static inline bool classof(const FCmpInst *) { return true; }
|
|
static inline bool classof(const Instruction *I) {
|
|
return I->getOpcode() == Instruction::FCmp;
|
|
}
|
|
static inline bool classof(const Value *V) {
|
|
return isa<Instruction>(V) && classof(cast<Instruction>(V));
|
|
}
|
|
};
|
|
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// SetCondInst Class
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
/// SetCondInst class - Represent a setCC operator, where CC is eq, ne, lt, gt,
|
|
/// le, or ge.
|
|
///
|
|
class SetCondInst : public BinaryOperator {
|
|
public:
|
|
SetCondInst(BinaryOps Opcode, Value *LHS, Value *RHS,
|
|
const std::string &Name = "", Instruction *InsertBefore = 0);
|
|
SetCondInst(BinaryOps Opcode, Value *LHS, Value *RHS,
|
|
const std::string &Name, BasicBlock *InsertAtEnd);
|
|
|
|
/// getInverseCondition - Return the inverse of the current condition opcode.
|
|
/// For example seteq -> setne, setgt -> setle, setlt -> setge, etc...
|
|
///
|
|
BinaryOps getInverseCondition() const {
|
|
return getInverseCondition(getOpcode());
|
|
}
|
|
|
|
/// getInverseCondition - Static version that you can use without an
|
|
/// instruction available.
|
|
///
|
|
static BinaryOps getInverseCondition(BinaryOps Opcode);
|
|
|
|
/// getSwappedCondition - Return the condition opcode that would be the result
|
|
/// of exchanging the two operands of the setcc instruction without changing
|
|
/// the result produced. Thus, seteq->seteq, setle->setge, setlt->setgt, etc.
|
|
///
|
|
BinaryOps getSwappedCondition() const {
|
|
return getSwappedCondition(getOpcode());
|
|
}
|
|
|
|
/// getSwappedCondition - Static version that you can use without an
|
|
/// instruction available.
|
|
///
|
|
static BinaryOps getSwappedCondition(BinaryOps Opcode);
|
|
|
|
/// isEquality - Return true if this comparison is an ==/!= comparison.
|
|
///
|
|
bool isEquality() const {
|
|
return getOpcode() == SetEQ || getOpcode() == SetNE;
|
|
}
|
|
|
|
/// isRelational - Return true if this comparison is a </>/<=/>= comparison.
|
|
///
|
|
bool isRelational() const {
|
|
return !isEquality();
|
|
}
|
|
|
|
// Methods for support type inquiry through isa, cast, and dyn_cast:
|
|
static inline bool classof(const SetCondInst *) { return true; }
|
|
static inline bool classof(const Instruction *I) {
|
|
return I->getOpcode() == SetEQ || I->getOpcode() == SetNE ||
|
|
I->getOpcode() == SetLE || I->getOpcode() == SetGE ||
|
|
I->getOpcode() == SetLT || I->getOpcode() == SetGT;
|
|
}
|
|
static inline bool classof(const Value *V) {
|
|
return isa<Instruction>(V) && classof(cast<Instruction>(V));
|
|
}
|
|
};
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// CastInst Class
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
/// CastInst - This class represents a cast from Operand[0] to the type of
|
|
/// the instruction (i->getType()).
|
|
///
|
|
class CastInst : public UnaryInstruction {
|
|
CastInst(const CastInst &CI)
|
|
: UnaryInstruction(CI.getType(), Cast, CI.getOperand(0)) {
|
|
}
|
|
public:
|
|
CastInst(Value *S, const Type *Ty, const std::string &Name = "",
|
|
Instruction *InsertBefore = 0)
|
|
: UnaryInstruction(Ty, Cast, S, Name, InsertBefore) {
|
|
}
|
|
CastInst(Value *S, const Type *Ty, const std::string &Name,
|
|
BasicBlock *InsertAtEnd)
|
|
: UnaryInstruction(Ty, Cast, S, Name, InsertAtEnd) {
|
|
}
|
|
|
|
/// isTruncIntCast - Return true if this is a truncating integer cast
|
|
/// instruction, e.g. a cast from long to uint.
|
|
bool isTruncIntCast() const;
|
|
|
|
|
|
virtual CastInst *clone() const;
|
|
|
|
// Methods for support type inquiry through isa, cast, and dyn_cast:
|
|
static inline bool classof(const CastInst *) { return true; }
|
|
static inline bool classof(const Instruction *I) {
|
|
return I->getOpcode() == Cast;
|
|
}
|
|
static inline bool classof(const Value *V) {
|
|
return isa<Instruction>(V) && classof(cast<Instruction>(V));
|
|
}
|
|
};
|
|
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// CallInst Class
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
/// CallInst - This class represents a function call, abstracting a target
|
|
/// machine's calling convention. This class uses low bit of the SubClassData
|
|
/// field to indicate whether or not this is a tail call. The rest of the bits
|
|
/// hold the calling convention of the call.
|
|
///
|
|
class CallInst : public Instruction {
|
|
CallInst(const CallInst &CI);
|
|
void init(Value *Func, const std::vector<Value*> &Params);
|
|
void init(Value *Func, Value *Actual1, Value *Actual2);
|
|
void init(Value *Func, Value *Actual);
|
|
void init(Value *Func);
|
|
|
|
public:
|
|
CallInst(Value *F, const std::vector<Value*> &Par,
|
|
const std::string &Name = "", Instruction *InsertBefore = 0);
|
|
CallInst(Value *F, const std::vector<Value*> &Par,
|
|
const std::string &Name, BasicBlock *InsertAtEnd);
|
|
|
|
// Alternate CallInst ctors w/ two actuals, w/ one actual and no
|
|
// actuals, respectively.
|
|
CallInst(Value *F, Value *Actual1, Value *Actual2,
|
|
const std::string& Name = "", Instruction *InsertBefore = 0);
|
|
CallInst(Value *F, Value *Actual1, Value *Actual2,
|
|
const std::string& Name, BasicBlock *InsertAtEnd);
|
|
CallInst(Value *F, Value *Actual, const std::string& Name = "",
|
|
Instruction *InsertBefore = 0);
|
|
CallInst(Value *F, Value *Actual, const std::string& Name,
|
|
BasicBlock *InsertAtEnd);
|
|
explicit CallInst(Value *F, const std::string &Name = "",
|
|
Instruction *InsertBefore = 0);
|
|
CallInst(Value *F, const std::string &Name, BasicBlock *InsertAtEnd);
|
|
~CallInst();
|
|
|
|
virtual CallInst *clone() const;
|
|
bool mayWriteToMemory() const { return true; }
|
|
|
|
bool isTailCall() const { return SubclassData & 1; }
|
|
void setTailCall(bool isTailCall = true) {
|
|
SubclassData = (SubclassData & ~1) | unsigned(isTailCall);
|
|
}
|
|
|
|
/// getCallingConv/setCallingConv - Get or set the calling convention of this
|
|
/// function call.
|
|
unsigned getCallingConv() const { return SubclassData >> 1; }
|
|
void setCallingConv(unsigned CC) {
|
|
SubclassData = (SubclassData & 1) | (CC << 1);
|
|
}
|
|
|
|
/// getCalledFunction - Return the function being called by this instruction
|
|
/// if it is a direct call. If it is a call through a function pointer,
|
|
/// return null.
|
|
Function *getCalledFunction() const {
|
|
return static_cast<Function*>(dyn_cast<Function>(getOperand(0)));
|
|
}
|
|
|
|
// getCalledValue - Get a pointer to a method that is invoked by this inst.
|
|
inline const Value *getCalledValue() const { return getOperand(0); }
|
|
inline Value *getCalledValue() { return getOperand(0); }
|
|
|
|
// Methods for support type inquiry through isa, cast, and dyn_cast:
|
|
static inline bool classof(const CallInst *) { return true; }
|
|
static inline bool classof(const Instruction *I) {
|
|
return I->getOpcode() == Instruction::Call;
|
|
}
|
|
static inline bool classof(const Value *V) {
|
|
return isa<Instruction>(V) && classof(cast<Instruction>(V));
|
|
}
|
|
};
|
|
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// ShiftInst Class
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
/// ShiftInst - This class represents left and right shift instructions.
|
|
///
|
|
class ShiftInst : public Instruction {
|
|
Use Ops[2];
|
|
ShiftInst(const ShiftInst &SI)
|
|
: Instruction(SI.getType(), SI.getOpcode(), Ops, 2) {
|
|
Ops[0].init(SI.Ops[0], this);
|
|
Ops[1].init(SI.Ops[1], this);
|
|
}
|
|
void init(OtherOps Opcode, Value *S, Value *SA) {
|
|
assert((Opcode == Shl || Opcode == LShr || Opcode == AShr) &&
|
|
"ShiftInst Opcode invalid!");
|
|
Ops[0].init(S, this);
|
|
Ops[1].init(SA, this);
|
|
}
|
|
|
|
public:
|
|
ShiftInst(OtherOps Opcode, Value *S, Value *SA, const std::string &Name = "",
|
|
Instruction *InsertBefore = 0)
|
|
: Instruction(S->getType(), Opcode, Ops, 2, Name, InsertBefore) {
|
|
init(Opcode, S, SA);
|
|
}
|
|
ShiftInst(OtherOps Opcode, Value *S, Value *SA, const std::string &Name,
|
|
BasicBlock *InsertAtEnd)
|
|
: Instruction(S->getType(), Opcode, Ops, 2, Name, InsertAtEnd) {
|
|
init(Opcode, S, SA);
|
|
}
|
|
|
|
OtherOps getOpcode() const {
|
|
return static_cast<OtherOps>(Instruction::getOpcode());
|
|
}
|
|
|
|
/// Transparently provide more efficient getOperand methods.
|
|
Value *getOperand(unsigned i) const {
|
|
assert(i < 2 && "getOperand() out of range!");
|
|
return Ops[i];
|
|
}
|
|
void setOperand(unsigned i, Value *Val) {
|
|
assert(i < 2 && "setOperand() out of range!");
|
|
Ops[i] = Val;
|
|
}
|
|
unsigned getNumOperands() const { return 2; }
|
|
|
|
/// isLogicalShift - Return true if this is a logical shift left or a logical
|
|
/// shift right.
|
|
bool isLogicalShift() const {
|
|
unsigned opcode = getOpcode();
|
|
return opcode == Instruction::Shl || opcode == Instruction::LShr;
|
|
}
|
|
|
|
|
|
/// isArithmeticShift - Return true if this is a sign-extending shift right
|
|
/// operation.
|
|
bool isArithmeticShift() const {
|
|
return !isLogicalShift();
|
|
}
|
|
|
|
|
|
virtual ShiftInst *clone() const;
|
|
|
|
// Methods for support type inquiry through isa, cast, and dyn_cast:
|
|
static inline bool classof(const ShiftInst *) { return true; }
|
|
static inline bool classof(const Instruction *I) {
|
|
return (I->getOpcode() == Instruction::LShr) |
|
|
(I->getOpcode() == Instruction::AShr) |
|
|
(I->getOpcode() == Instruction::Shl);
|
|
}
|
|
static inline bool classof(const Value *V) {
|
|
return isa<Instruction>(V) && classof(cast<Instruction>(V));
|
|
}
|
|
};
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// SelectInst Class
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
/// SelectInst - This class represents the LLVM 'select' instruction.
|
|
///
|
|
class SelectInst : public Instruction {
|
|
Use Ops[3];
|
|
|
|
void init(Value *C, Value *S1, Value *S2) {
|
|
Ops[0].init(C, this);
|
|
Ops[1].init(S1, this);
|
|
Ops[2].init(S2, this);
|
|
}
|
|
|
|
SelectInst(const SelectInst &SI)
|
|
: Instruction(SI.getType(), SI.getOpcode(), Ops, 3) {
|
|
init(SI.Ops[0], SI.Ops[1], SI.Ops[2]);
|
|
}
|
|
public:
|
|
SelectInst(Value *C, Value *S1, Value *S2, const std::string &Name = "",
|
|
Instruction *InsertBefore = 0)
|
|
: Instruction(S1->getType(), Instruction::Select, Ops, 3,
|
|
Name, InsertBefore) {
|
|
init(C, S1, S2);
|
|
}
|
|
SelectInst(Value *C, Value *S1, Value *S2, const std::string &Name,
|
|
BasicBlock *InsertAtEnd)
|
|
: Instruction(S1->getType(), Instruction::Select, Ops, 3,
|
|
Name, InsertAtEnd) {
|
|
init(C, S1, S2);
|
|
}
|
|
|
|
Value *getCondition() const { return Ops[0]; }
|
|
Value *getTrueValue() const { return Ops[1]; }
|
|
Value *getFalseValue() const { return Ops[2]; }
|
|
|
|
/// Transparently provide more efficient getOperand methods.
|
|
Value *getOperand(unsigned i) const {
|
|
assert(i < 3 && "getOperand() out of range!");
|
|
return Ops[i];
|
|
}
|
|
void setOperand(unsigned i, Value *Val) {
|
|
assert(i < 3 && "setOperand() out of range!");
|
|
Ops[i] = Val;
|
|
}
|
|
unsigned getNumOperands() const { return 3; }
|
|
|
|
OtherOps getOpcode() const {
|
|
return static_cast<OtherOps>(Instruction::getOpcode());
|
|
}
|
|
|
|
virtual SelectInst *clone() const;
|
|
|
|
// Methods for support type inquiry through isa, cast, and dyn_cast:
|
|
static inline bool classof(const SelectInst *) { return true; }
|
|
static inline bool classof(const Instruction *I) {
|
|
return I->getOpcode() == Instruction::Select;
|
|
}
|
|
static inline bool classof(const Value *V) {
|
|
return isa<Instruction>(V) && classof(cast<Instruction>(V));
|
|
}
|
|
};
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// VAArgInst Class
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
/// VAArgInst - This class represents the va_arg llvm instruction, which returns
|
|
/// an argument of the specified type given a va_list and increments that list
|
|
///
|
|
class VAArgInst : public UnaryInstruction {
|
|
VAArgInst(const VAArgInst &VAA)
|
|
: UnaryInstruction(VAA.getType(), VAArg, VAA.getOperand(0)) {}
|
|
public:
|
|
VAArgInst(Value *List, const Type *Ty, const std::string &Name = "",
|
|
Instruction *InsertBefore = 0)
|
|
: UnaryInstruction(Ty, VAArg, List, Name, InsertBefore) {
|
|
}
|
|
VAArgInst(Value *List, const Type *Ty, const std::string &Name,
|
|
BasicBlock *InsertAtEnd)
|
|
: UnaryInstruction(Ty, VAArg, List, Name, InsertAtEnd) {
|
|
}
|
|
|
|
virtual VAArgInst *clone() const;
|
|
bool mayWriteToMemory() const { return true; }
|
|
|
|
// Methods for support type inquiry through isa, cast, and dyn_cast:
|
|
static inline bool classof(const VAArgInst *) { return true; }
|
|
static inline bool classof(const Instruction *I) {
|
|
return I->getOpcode() == VAArg;
|
|
}
|
|
static inline bool classof(const Value *V) {
|
|
return isa<Instruction>(V) && classof(cast<Instruction>(V));
|
|
}
|
|
};
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// ExtractElementInst Class
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
/// ExtractElementInst - This instruction extracts a single (scalar)
|
|
/// element from a PackedType value
|
|
///
|
|
class ExtractElementInst : public Instruction {
|
|
Use Ops[2];
|
|
ExtractElementInst(const ExtractElementInst &EE) :
|
|
Instruction(EE.getType(), ExtractElement, Ops, 2) {
|
|
Ops[0].init(EE.Ops[0], this);
|
|
Ops[1].init(EE.Ops[1], this);
|
|
}
|
|
|
|
public:
|
|
ExtractElementInst(Value *Vec, Value *Idx, const std::string &Name = "",
|
|
Instruction *InsertBefore = 0);
|
|
ExtractElementInst(Value *Vec, unsigned Idx, const std::string &Name = "",
|
|
Instruction *InsertBefore = 0);
|
|
ExtractElementInst(Value *Vec, Value *Idx, const std::string &Name,
|
|
BasicBlock *InsertAtEnd);
|
|
ExtractElementInst(Value *Vec, unsigned Idx, const std::string &Name,
|
|
BasicBlock *InsertAtEnd);
|
|
|
|
/// isValidOperands - Return true if an extractelement instruction can be
|
|
/// formed with the specified operands.
|
|
static bool isValidOperands(const Value *Vec, const Value *Idx);
|
|
|
|
virtual ExtractElementInst *clone() const;
|
|
|
|
virtual bool mayWriteToMemory() const { return false; }
|
|
|
|
/// Transparently provide more efficient getOperand methods.
|
|
Value *getOperand(unsigned i) const {
|
|
assert(i < 2 && "getOperand() out of range!");
|
|
return Ops[i];
|
|
}
|
|
void setOperand(unsigned i, Value *Val) {
|
|
assert(i < 2 && "setOperand() out of range!");
|
|
Ops[i] = Val;
|
|
}
|
|
unsigned getNumOperands() const { return 2; }
|
|
|
|
// Methods for support type inquiry through isa, cast, and dyn_cast:
|
|
static inline bool classof(const ExtractElementInst *) { return true; }
|
|
static inline bool classof(const Instruction *I) {
|
|
return I->getOpcode() == Instruction::ExtractElement;
|
|
}
|
|
static inline bool classof(const Value *V) {
|
|
return isa<Instruction>(V) && classof(cast<Instruction>(V));
|
|
}
|
|
};
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// InsertElementInst Class
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
/// InsertElementInst - This instruction inserts a single (scalar)
|
|
/// element into a PackedType value
|
|
///
|
|
class InsertElementInst : public Instruction {
|
|
Use Ops[3];
|
|
InsertElementInst(const InsertElementInst &IE);
|
|
public:
|
|
InsertElementInst(Value *Vec, Value *NewElt, Value *Idx,
|
|
const std::string &Name = "",Instruction *InsertBefore = 0);
|
|
InsertElementInst(Value *Vec, Value *NewElt, unsigned Idx,
|
|
const std::string &Name = "",Instruction *InsertBefore = 0);
|
|
InsertElementInst(Value *Vec, Value *NewElt, Value *Idx,
|
|
const std::string &Name, BasicBlock *InsertAtEnd);
|
|
InsertElementInst(Value *Vec, Value *NewElt, unsigned Idx,
|
|
const std::string &Name, BasicBlock *InsertAtEnd);
|
|
|
|
/// isValidOperands - Return true if an insertelement instruction can be
|
|
/// formed with the specified operands.
|
|
static bool isValidOperands(const Value *Vec, const Value *NewElt,
|
|
const Value *Idx);
|
|
|
|
virtual InsertElementInst *clone() const;
|
|
|
|
virtual bool mayWriteToMemory() const { return false; }
|
|
|
|
/// getType - Overload to return most specific packed type.
|
|
///
|
|
inline const PackedType *getType() const {
|
|
return reinterpret_cast<const PackedType*>(Instruction::getType());
|
|
}
|
|
|
|
/// Transparently provide more efficient getOperand methods.
|
|
Value *getOperand(unsigned i) const {
|
|
assert(i < 3 && "getOperand() out of range!");
|
|
return Ops[i];
|
|
}
|
|
void setOperand(unsigned i, Value *Val) {
|
|
assert(i < 3 && "setOperand() out of range!");
|
|
Ops[i] = Val;
|
|
}
|
|
unsigned getNumOperands() const { return 3; }
|
|
|
|
// Methods for support type inquiry through isa, cast, and dyn_cast:
|
|
static inline bool classof(const InsertElementInst *) { return true; }
|
|
static inline bool classof(const Instruction *I) {
|
|
return I->getOpcode() == Instruction::InsertElement;
|
|
}
|
|
static inline bool classof(const Value *V) {
|
|
return isa<Instruction>(V) && classof(cast<Instruction>(V));
|
|
}
|
|
};
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// ShuffleVectorInst Class
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
/// ShuffleVectorInst - This instruction constructs a fixed permutation of two
|
|
/// input vectors.
|
|
///
|
|
class ShuffleVectorInst : public Instruction {
|
|
Use Ops[3];
|
|
ShuffleVectorInst(const ShuffleVectorInst &IE);
|
|
public:
|
|
ShuffleVectorInst(Value *V1, Value *V2, Value *Mask,
|
|
const std::string &Name = "", Instruction *InsertBefor = 0);
|
|
ShuffleVectorInst(Value *V1, Value *V2, Value *Mask,
|
|
const std::string &Name, BasicBlock *InsertAtEnd);
|
|
|
|
/// isValidOperands - Return true if a shufflevector instruction can be
|
|
/// formed with the specified operands.
|
|
static bool isValidOperands(const Value *V1, const Value *V2,
|
|
const Value *Mask);
|
|
|
|
virtual ShuffleVectorInst *clone() const;
|
|
|
|
virtual bool mayWriteToMemory() const { return false; }
|
|
|
|
/// getType - Overload to return most specific packed type.
|
|
///
|
|
inline const PackedType *getType() const {
|
|
return reinterpret_cast<const PackedType*>(Instruction::getType());
|
|
}
|
|
|
|
/// Transparently provide more efficient getOperand methods.
|
|
Value *getOperand(unsigned i) const {
|
|
assert(i < 3 && "getOperand() out of range!");
|
|
return Ops[i];
|
|
}
|
|
void setOperand(unsigned i, Value *Val) {
|
|
assert(i < 3 && "setOperand() out of range!");
|
|
Ops[i] = Val;
|
|
}
|
|
unsigned getNumOperands() const { return 3; }
|
|
|
|
// Methods for support type inquiry through isa, cast, and dyn_cast:
|
|
static inline bool classof(const ShuffleVectorInst *) { return true; }
|
|
static inline bool classof(const Instruction *I) {
|
|
return I->getOpcode() == Instruction::ShuffleVector;
|
|
}
|
|
static inline bool classof(const Value *V) {
|
|
return isa<Instruction>(V) && classof(cast<Instruction>(V));
|
|
}
|
|
};
|
|
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// PHINode Class
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
// PHINode - The PHINode class is used to represent the magical mystical PHI
|
|
// node, that can not exist in nature, but can be synthesized in a computer
|
|
// scientist's overactive imagination.
|
|
//
|
|
class PHINode : public Instruction {
|
|
/// ReservedSpace - The number of operands actually allocated. NumOperands is
|
|
/// the number actually in use.
|
|
unsigned ReservedSpace;
|
|
PHINode(const PHINode &PN);
|
|
public:
|
|
explicit PHINode(const Type *Ty, const std::string &Name = "",
|
|
Instruction *InsertBefore = 0)
|
|
: Instruction(Ty, Instruction::PHI, 0, 0, Name, InsertBefore),
|
|
ReservedSpace(0) {
|
|
}
|
|
|
|
PHINode(const Type *Ty, const std::string &Name, BasicBlock *InsertAtEnd)
|
|
: Instruction(Ty, Instruction::PHI, 0, 0, Name, InsertAtEnd),
|
|
ReservedSpace(0) {
|
|
}
|
|
|
|
~PHINode();
|
|
|
|
/// reserveOperandSpace - This method can be used to avoid repeated
|
|
/// reallocation of PHI operand lists by reserving space for the correct
|
|
/// number of operands before adding them. Unlike normal vector reserves,
|
|
/// this method can also be used to trim the operand space.
|
|
void reserveOperandSpace(unsigned NumValues) {
|
|
resizeOperands(NumValues*2);
|
|
}
|
|
|
|
virtual PHINode *clone() const;
|
|
|
|
/// getNumIncomingValues - Return the number of incoming edges
|
|
///
|
|
unsigned getNumIncomingValues() const { return getNumOperands()/2; }
|
|
|
|
/// getIncomingValue - Return incoming value number x
|
|
///
|
|
Value *getIncomingValue(unsigned i) const {
|
|
assert(i*2 < getNumOperands() && "Invalid value number!");
|
|
return getOperand(i*2);
|
|
}
|
|
void setIncomingValue(unsigned i, Value *V) {
|
|
assert(i*2 < getNumOperands() && "Invalid value number!");
|
|
setOperand(i*2, V);
|
|
}
|
|
unsigned getOperandNumForIncomingValue(unsigned i) {
|
|
return i*2;
|
|
}
|
|
|
|
/// getIncomingBlock - Return incoming basic block number x
|
|
///
|
|
BasicBlock *getIncomingBlock(unsigned i) const {
|
|
return reinterpret_cast<BasicBlock*>(getOperand(i*2+1));
|
|
}
|
|
void setIncomingBlock(unsigned i, BasicBlock *BB) {
|
|
setOperand(i*2+1, reinterpret_cast<Value*>(BB));
|
|
}
|
|
unsigned getOperandNumForIncomingBlock(unsigned i) {
|
|
return i*2+1;
|
|
}
|
|
|
|
/// addIncoming - Add an incoming value to the end of the PHI list
|
|
///
|
|
void addIncoming(Value *V, BasicBlock *BB) {
|
|
assert(getType() == V->getType() &&
|
|
"All operands to PHI node must be the same type as the PHI node!");
|
|
unsigned OpNo = NumOperands;
|
|
if (OpNo+2 > ReservedSpace)
|
|
resizeOperands(0); // Get more space!
|
|
// Initialize some new operands.
|
|
NumOperands = OpNo+2;
|
|
OperandList[OpNo].init(V, this);
|
|
OperandList[OpNo+1].init(reinterpret_cast<Value*>(BB), this);
|
|
}
|
|
|
|
/// removeIncomingValue - Remove an incoming value. This is useful if a
|
|
/// predecessor basic block is deleted. The value removed is returned.
|
|
///
|
|
/// If the last incoming value for a PHI node is removed (and DeletePHIIfEmpty
|
|
/// is true), the PHI node is destroyed and any uses of it are replaced with
|
|
/// dummy values. The only time there should be zero incoming values to a PHI
|
|
/// node is when the block is dead, so this strategy is sound.
|
|
///
|
|
Value *removeIncomingValue(unsigned Idx, bool DeletePHIIfEmpty = true);
|
|
|
|
Value *removeIncomingValue(const BasicBlock *BB, bool DeletePHIIfEmpty =true){
|
|
int Idx = getBasicBlockIndex(BB);
|
|
assert(Idx >= 0 && "Invalid basic block argument to remove!");
|
|
return removeIncomingValue(Idx, DeletePHIIfEmpty);
|
|
}
|
|
|
|
/// getBasicBlockIndex - Return the first index of the specified basic
|
|
/// block in the value list for this PHI. Returns -1 if no instance.
|
|
///
|
|
int getBasicBlockIndex(const BasicBlock *BB) const {
|
|
Use *OL = OperandList;
|
|
for (unsigned i = 0, e = getNumOperands(); i != e; i += 2)
|
|
if (OL[i+1] == reinterpret_cast<const Value*>(BB)) return i/2;
|
|
return -1;
|
|
}
|
|
|
|
Value *getIncomingValueForBlock(const BasicBlock *BB) const {
|
|
return getIncomingValue(getBasicBlockIndex(BB));
|
|
}
|
|
|
|
/// hasConstantValue - If the specified PHI node always merges together the
|
|
/// same value, return the value, otherwise return null.
|
|
///
|
|
Value *hasConstantValue(bool AllowNonDominatingInstruction = false) const;
|
|
|
|
/// Methods for support type inquiry through isa, cast, and dyn_cast:
|
|
static inline bool classof(const PHINode *) { return true; }
|
|
static inline bool classof(const Instruction *I) {
|
|
return I->getOpcode() == Instruction::PHI;
|
|
}
|
|
static inline bool classof(const Value *V) {
|
|
return isa<Instruction>(V) && classof(cast<Instruction>(V));
|
|
}
|
|
private:
|
|
void resizeOperands(unsigned NumOperands);
|
|
};
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// ReturnInst Class
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
//===---------------------------------------------------------------------------
|
|
/// ReturnInst - Return a value (possibly void), from a function. Execution
|
|
/// does not continue in this function any longer.
|
|
///
|
|
class ReturnInst : public TerminatorInst {
|
|
Use RetVal; // Possibly null retval.
|
|
ReturnInst(const ReturnInst &RI) : TerminatorInst(Instruction::Ret, &RetVal,
|
|
RI.getNumOperands()) {
|
|
if (RI.getNumOperands())
|
|
RetVal.init(RI.RetVal, this);
|
|
}
|
|
|
|
void init(Value *RetVal);
|
|
|
|
public:
|
|
// ReturnInst constructors:
|
|
// ReturnInst() - 'ret void' instruction
|
|
// ReturnInst( null) - 'ret void' instruction
|
|
// ReturnInst(Value* X) - 'ret X' instruction
|
|
// ReturnInst( null, Inst *) - 'ret void' instruction, insert before I
|
|
// ReturnInst(Value* X, Inst *I) - 'ret X' instruction, insert before I
|
|
// ReturnInst( null, BB *B) - 'ret void' instruction, insert @ end of BB
|
|
// ReturnInst(Value* X, BB *B) - 'ret X' instruction, insert @ end of BB
|
|
//
|
|
// NOTE: If the Value* passed is of type void then the constructor behaves as
|
|
// if it was passed NULL.
|
|
explicit ReturnInst(Value *retVal = 0, Instruction *InsertBefore = 0)
|
|
: TerminatorInst(Instruction::Ret, &RetVal, 0, InsertBefore) {
|
|
init(retVal);
|
|
}
|
|
ReturnInst(Value *retVal, BasicBlock *InsertAtEnd)
|
|
: TerminatorInst(Instruction::Ret, &RetVal, 0, InsertAtEnd) {
|
|
init(retVal);
|
|
}
|
|
explicit ReturnInst(BasicBlock *InsertAtEnd)
|
|
: TerminatorInst(Instruction::Ret, &RetVal, 0, InsertAtEnd) {
|
|
}
|
|
|
|
virtual ReturnInst *clone() const;
|
|
|
|
// Transparently provide more efficient getOperand methods.
|
|
Value *getOperand(unsigned i) const {
|
|
assert(i < getNumOperands() && "getOperand() out of range!");
|
|
return RetVal;
|
|
}
|
|
void setOperand(unsigned i, Value *Val) {
|
|
assert(i < getNumOperands() && "setOperand() out of range!");
|
|
RetVal = Val;
|
|
}
|
|
|
|
Value *getReturnValue() const { return RetVal; }
|
|
|
|
unsigned getNumSuccessors() const { return 0; }
|
|
|
|
// Methods for support type inquiry through isa, cast, and dyn_cast:
|
|
static inline bool classof(const ReturnInst *) { return true; }
|
|
static inline bool classof(const Instruction *I) {
|
|
return (I->getOpcode() == Instruction::Ret);
|
|
}
|
|
static inline bool classof(const Value *V) {
|
|
return isa<Instruction>(V) && classof(cast<Instruction>(V));
|
|
}
|
|
private:
|
|
virtual BasicBlock *getSuccessorV(unsigned idx) const;
|
|
virtual unsigned getNumSuccessorsV() const;
|
|
virtual void setSuccessorV(unsigned idx, BasicBlock *B);
|
|
};
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// BranchInst Class
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
//===---------------------------------------------------------------------------
|
|
/// BranchInst - Conditional or Unconditional Branch instruction.
|
|
///
|
|
class BranchInst : public TerminatorInst {
|
|
/// Ops list - Branches are strange. The operands are ordered:
|
|
/// TrueDest, FalseDest, Cond. This makes some accessors faster because
|
|
/// they don't have to check for cond/uncond branchness.
|
|
Use Ops[3];
|
|
BranchInst(const BranchInst &BI);
|
|
void AssertOK();
|
|
public:
|
|
// BranchInst constructors (where {B, T, F} are blocks, and C is a condition):
|
|
// BranchInst(BB *B) - 'br B'
|
|
// BranchInst(BB* T, BB *F, Value *C) - 'br C, T, F'
|
|
// BranchInst(BB* B, Inst *I) - 'br B' insert before I
|
|
// BranchInst(BB* T, BB *F, Value *C, Inst *I) - 'br C, T, F', insert before I
|
|
// BranchInst(BB* B, BB *I) - 'br B' insert at end
|
|
// BranchInst(BB* T, BB *F, Value *C, BB *I) - 'br C, T, F', insert at end
|
|
explicit BranchInst(BasicBlock *IfTrue, Instruction *InsertBefore = 0)
|
|
: TerminatorInst(Instruction::Br, Ops, 1, InsertBefore) {
|
|
assert(IfTrue != 0 && "Branch destination may not be null!");
|
|
Ops[0].init(reinterpret_cast<Value*>(IfTrue), this);
|
|
}
|
|
BranchInst(BasicBlock *IfTrue, BasicBlock *IfFalse, Value *Cond,
|
|
Instruction *InsertBefore = 0)
|
|
: TerminatorInst(Instruction::Br, Ops, 3, InsertBefore) {
|
|
Ops[0].init(reinterpret_cast<Value*>(IfTrue), this);
|
|
Ops[1].init(reinterpret_cast<Value*>(IfFalse), this);
|
|
Ops[2].init(Cond, this);
|
|
#ifndef NDEBUG
|
|
AssertOK();
|
|
#endif
|
|
}
|
|
|
|
BranchInst(BasicBlock *IfTrue, BasicBlock *InsertAtEnd)
|
|
: TerminatorInst(Instruction::Br, Ops, 1, InsertAtEnd) {
|
|
assert(IfTrue != 0 && "Branch destination may not be null!");
|
|
Ops[0].init(reinterpret_cast<Value*>(IfTrue), this);
|
|
}
|
|
|
|
BranchInst(BasicBlock *IfTrue, BasicBlock *IfFalse, Value *Cond,
|
|
BasicBlock *InsertAtEnd)
|
|
: TerminatorInst(Instruction::Br, Ops, 3, InsertAtEnd) {
|
|
Ops[0].init(reinterpret_cast<Value*>(IfTrue), this);
|
|
Ops[1].init(reinterpret_cast<Value*>(IfFalse), this);
|
|
Ops[2].init(Cond, this);
|
|
#ifndef NDEBUG
|
|
AssertOK();
|
|
#endif
|
|
}
|
|
|
|
|
|
/// Transparently provide more efficient getOperand methods.
|
|
Value *getOperand(unsigned i) const {
|
|
assert(i < getNumOperands() && "getOperand() out of range!");
|
|
return Ops[i];
|
|
}
|
|
void setOperand(unsigned i, Value *Val) {
|
|
assert(i < getNumOperands() && "setOperand() out of range!");
|
|
Ops[i] = Val;
|
|
}
|
|
|
|
virtual BranchInst *clone() const;
|
|
|
|
inline bool isUnconditional() const { return getNumOperands() == 1; }
|
|
inline bool isConditional() const { return getNumOperands() == 3; }
|
|
|
|
inline Value *getCondition() const {
|
|
assert(isConditional() && "Cannot get condition of an uncond branch!");
|
|
return getOperand(2);
|
|
}
|
|
|
|
void setCondition(Value *V) {
|
|
assert(isConditional() && "Cannot set condition of unconditional branch!");
|
|
setOperand(2, V);
|
|
}
|
|
|
|
// setUnconditionalDest - Change the current branch to an unconditional branch
|
|
// targeting the specified block.
|
|
// FIXME: Eliminate this ugly method.
|
|
void setUnconditionalDest(BasicBlock *Dest) {
|
|
if (isConditional()) { // Convert this to an uncond branch.
|
|
NumOperands = 1;
|
|
Ops[1].set(0);
|
|
Ops[2].set(0);
|
|
}
|
|
setOperand(0, reinterpret_cast<Value*>(Dest));
|
|
}
|
|
|
|
unsigned getNumSuccessors() const { return 1+isConditional(); }
|
|
|
|
BasicBlock *getSuccessor(unsigned i) const {
|
|
assert(i < getNumSuccessors() && "Successor # out of range for Branch!");
|
|
return (i == 0) ? cast<BasicBlock>(getOperand(0)) :
|
|
cast<BasicBlock>(getOperand(1));
|
|
}
|
|
|
|
void setSuccessor(unsigned idx, BasicBlock *NewSucc) {
|
|
assert(idx < getNumSuccessors() && "Successor # out of range for Branch!");
|
|
setOperand(idx, reinterpret_cast<Value*>(NewSucc));
|
|
}
|
|
|
|
// Methods for support type inquiry through isa, cast, and dyn_cast:
|
|
static inline bool classof(const BranchInst *) { return true; }
|
|
static inline bool classof(const Instruction *I) {
|
|
return (I->getOpcode() == Instruction::Br);
|
|
}
|
|
static inline bool classof(const Value *V) {
|
|
return isa<Instruction>(V) && classof(cast<Instruction>(V));
|
|
}
|
|
private:
|
|
virtual BasicBlock *getSuccessorV(unsigned idx) const;
|
|
virtual unsigned getNumSuccessorsV() const;
|
|
virtual void setSuccessorV(unsigned idx, BasicBlock *B);
|
|
};
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// SwitchInst Class
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
//===---------------------------------------------------------------------------
|
|
/// SwitchInst - Multiway switch
|
|
///
|
|
class SwitchInst : public TerminatorInst {
|
|
unsigned ReservedSpace;
|
|
// Operand[0] = Value to switch on
|
|
// Operand[1] = Default basic block destination
|
|
// Operand[2n ] = Value to match
|
|
// Operand[2n+1] = BasicBlock to go to on match
|
|
SwitchInst(const SwitchInst &RI);
|
|
void init(Value *Value, BasicBlock *Default, unsigned NumCases);
|
|
void resizeOperands(unsigned No);
|
|
public:
|
|
/// SwitchInst ctor - Create a new switch instruction, specifying a value to
|
|
/// switch on and a default destination. The number of additional cases can
|
|
/// be specified here to make memory allocation more efficient. This
|
|
/// constructor can also autoinsert before another instruction.
|
|
SwitchInst(Value *Value, BasicBlock *Default, unsigned NumCases,
|
|
Instruction *InsertBefore = 0)
|
|
: TerminatorInst(Instruction::Switch, 0, 0, InsertBefore) {
|
|
init(Value, Default, NumCases);
|
|
}
|
|
|
|
/// SwitchInst ctor - Create a new switch instruction, specifying a value to
|
|
/// switch on and a default destination. The number of additional cases can
|
|
/// be specified here to make memory allocation more efficient. This
|
|
/// constructor also autoinserts at the end of the specified BasicBlock.
|
|
SwitchInst(Value *Value, BasicBlock *Default, unsigned NumCases,
|
|
BasicBlock *InsertAtEnd)
|
|
: TerminatorInst(Instruction::Switch, 0, 0, InsertAtEnd) {
|
|
init(Value, Default, NumCases);
|
|
}
|
|
~SwitchInst();
|
|
|
|
|
|
// Accessor Methods for Switch stmt
|
|
inline Value *getCondition() const { return getOperand(0); }
|
|
void setCondition(Value *V) { setOperand(0, V); }
|
|
|
|
inline BasicBlock *getDefaultDest() const {
|
|
return cast<BasicBlock>(getOperand(1));
|
|
}
|
|
|
|
/// getNumCases - return the number of 'cases' in this switch instruction.
|
|
/// Note that case #0 is always the default case.
|
|
unsigned getNumCases() const {
|
|
return getNumOperands()/2;
|
|
}
|
|
|
|
/// getCaseValue - Return the specified case value. Note that case #0, the
|
|
/// default destination, does not have a case value.
|
|
ConstantInt *getCaseValue(unsigned i) {
|
|
assert(i && i < getNumCases() && "Illegal case value to get!");
|
|
return getSuccessorValue(i);
|
|
}
|
|
|
|
/// getCaseValue - Return the specified case value. Note that case #0, the
|
|
/// default destination, does not have a case value.
|
|
const ConstantInt *getCaseValue(unsigned i) const {
|
|
assert(i && i < getNumCases() && "Illegal case value to get!");
|
|
return getSuccessorValue(i);
|
|
}
|
|
|
|
/// findCaseValue - Search all of the case values for the specified constant.
|
|
/// If it is explicitly handled, return the case number of it, otherwise
|
|
/// return 0 to indicate that it is handled by the default handler.
|
|
unsigned findCaseValue(const ConstantInt *C) const {
|
|
for (unsigned i = 1, e = getNumCases(); i != e; ++i)
|
|
if (getCaseValue(i) == C)
|
|
return i;
|
|
return 0;
|
|
}
|
|
|
|
/// findCaseDest - Finds the unique case value for a given successor. Returns
|
|
/// null if the successor is not found, not unique, or is the default case.
|
|
ConstantInt *findCaseDest(BasicBlock *BB) {
|
|
if (BB == getDefaultDest()) return NULL;
|
|
|
|
ConstantInt *CI = NULL;
|
|
for (unsigned i = 1, e = getNumCases(); i != e; ++i) {
|
|
if (getSuccessor(i) == BB) {
|
|
if (CI) return NULL; // Multiple cases lead to BB.
|
|
else CI = getCaseValue(i);
|
|
}
|
|
}
|
|
return CI;
|
|
}
|
|
|
|
/// addCase - Add an entry to the switch instruction...
|
|
///
|
|
void addCase(ConstantInt *OnVal, BasicBlock *Dest);
|
|
|
|
/// removeCase - This method removes the specified successor from the switch
|
|
/// instruction. Note that this cannot be used to remove the default
|
|
/// destination (successor #0).
|
|
///
|
|
void removeCase(unsigned idx);
|
|
|
|
virtual SwitchInst *clone() const;
|
|
|
|
unsigned getNumSuccessors() const { return getNumOperands()/2; }
|
|
BasicBlock *getSuccessor(unsigned idx) const {
|
|
assert(idx < getNumSuccessors() &&"Successor idx out of range for switch!");
|
|
return cast<BasicBlock>(getOperand(idx*2+1));
|
|
}
|
|
void setSuccessor(unsigned idx, BasicBlock *NewSucc) {
|
|
assert(idx < getNumSuccessors() && "Successor # out of range for switch!");
|
|
setOperand(idx*2+1, reinterpret_cast<Value*>(NewSucc));
|
|
}
|
|
|
|
// getSuccessorValue - Return the value associated with the specified
|
|
// successor.
|
|
inline ConstantInt *getSuccessorValue(unsigned idx) const {
|
|
assert(idx < getNumSuccessors() && "Successor # out of range!");
|
|
return reinterpret_cast<ConstantInt*>(getOperand(idx*2));
|
|
}
|
|
|
|
// Methods for support type inquiry through isa, cast, and dyn_cast:
|
|
static inline bool classof(const SwitchInst *) { return true; }
|
|
static inline bool classof(const Instruction *I) {
|
|
return I->getOpcode() == Instruction::Switch;
|
|
}
|
|
static inline bool classof(const Value *V) {
|
|
return isa<Instruction>(V) && classof(cast<Instruction>(V));
|
|
}
|
|
private:
|
|
virtual BasicBlock *getSuccessorV(unsigned idx) const;
|
|
virtual unsigned getNumSuccessorsV() const;
|
|
virtual void setSuccessorV(unsigned idx, BasicBlock *B);
|
|
};
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// InvokeInst Class
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
//===---------------------------------------------------------------------------
|
|
|
|
/// InvokeInst - Invoke instruction. The SubclassData field is used to hold the
|
|
/// calling convention of the call.
|
|
///
|
|
class InvokeInst : public TerminatorInst {
|
|
InvokeInst(const InvokeInst &BI);
|
|
void init(Value *Fn, BasicBlock *IfNormal, BasicBlock *IfException,
|
|
const std::vector<Value*> &Params);
|
|
public:
|
|
InvokeInst(Value *Fn, BasicBlock *IfNormal, BasicBlock *IfException,
|
|
const std::vector<Value*> &Params, const std::string &Name = "",
|
|
Instruction *InsertBefore = 0);
|
|
InvokeInst(Value *Fn, BasicBlock *IfNormal, BasicBlock *IfException,
|
|
const std::vector<Value*> &Params, const std::string &Name,
|
|
BasicBlock *InsertAtEnd);
|
|
~InvokeInst();
|
|
|
|
virtual InvokeInst *clone() const;
|
|
|
|
bool mayWriteToMemory() const { return true; }
|
|
|
|
/// getCallingConv/setCallingConv - Get or set the calling convention of this
|
|
/// function call.
|
|
unsigned getCallingConv() const { return SubclassData; }
|
|
void setCallingConv(unsigned CC) {
|
|
SubclassData = CC;
|
|
}
|
|
|
|
/// getCalledFunction - Return the function called, or null if this is an
|
|
/// indirect function invocation.
|
|
///
|
|
Function *getCalledFunction() const {
|
|
return dyn_cast<Function>(getOperand(0));
|
|
}
|
|
|
|
// getCalledValue - Get a pointer to a function that is invoked by this inst.
|
|
inline Value *getCalledValue() const { return getOperand(0); }
|
|
|
|
// get*Dest - Return the destination basic blocks...
|
|
BasicBlock *getNormalDest() const {
|
|
return cast<BasicBlock>(getOperand(1));
|
|
}
|
|
BasicBlock *getUnwindDest() const {
|
|
return cast<BasicBlock>(getOperand(2));
|
|
}
|
|
void setNormalDest(BasicBlock *B) {
|
|
setOperand(1, reinterpret_cast<Value*>(B));
|
|
}
|
|
|
|
void setUnwindDest(BasicBlock *B) {
|
|
setOperand(2, reinterpret_cast<Value*>(B));
|
|
}
|
|
|
|
inline BasicBlock *getSuccessor(unsigned i) const {
|
|
assert(i < 2 && "Successor # out of range for invoke!");
|
|
return i == 0 ? getNormalDest() : getUnwindDest();
|
|
}
|
|
|
|
void setSuccessor(unsigned idx, BasicBlock *NewSucc) {
|
|
assert(idx < 2 && "Successor # out of range for invoke!");
|
|
setOperand(idx+1, reinterpret_cast<Value*>(NewSucc));
|
|
}
|
|
|
|
unsigned getNumSuccessors() const { return 2; }
|
|
|
|
// Methods for support type inquiry through isa, cast, and dyn_cast:
|
|
static inline bool classof(const InvokeInst *) { return true; }
|
|
static inline bool classof(const Instruction *I) {
|
|
return (I->getOpcode() == Instruction::Invoke);
|
|
}
|
|
static inline bool classof(const Value *V) {
|
|
return isa<Instruction>(V) && classof(cast<Instruction>(V));
|
|
}
|
|
private:
|
|
virtual BasicBlock *getSuccessorV(unsigned idx) const;
|
|
virtual unsigned getNumSuccessorsV() const;
|
|
virtual void setSuccessorV(unsigned idx, BasicBlock *B);
|
|
};
|
|
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// UnwindInst Class
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
//===---------------------------------------------------------------------------
|
|
/// UnwindInst - Immediately exit the current function, unwinding the stack
|
|
/// until an invoke instruction is found.
|
|
///
|
|
class UnwindInst : public TerminatorInst {
|
|
public:
|
|
explicit UnwindInst(Instruction *InsertBefore = 0)
|
|
: TerminatorInst(Instruction::Unwind, 0, 0, InsertBefore) {
|
|
}
|
|
explicit UnwindInst(BasicBlock *InsertAtEnd)
|
|
: TerminatorInst(Instruction::Unwind, 0, 0, InsertAtEnd) {
|
|
}
|
|
|
|
virtual UnwindInst *clone() const;
|
|
|
|
unsigned getNumSuccessors() const { return 0; }
|
|
|
|
// Methods for support type inquiry through isa, cast, and dyn_cast:
|
|
static inline bool classof(const UnwindInst *) { return true; }
|
|
static inline bool classof(const Instruction *I) {
|
|
return I->getOpcode() == Instruction::Unwind;
|
|
}
|
|
static inline bool classof(const Value *V) {
|
|
return isa<Instruction>(V) && classof(cast<Instruction>(V));
|
|
}
|
|
private:
|
|
virtual BasicBlock *getSuccessorV(unsigned idx) const;
|
|
virtual unsigned getNumSuccessorsV() const;
|
|
virtual void setSuccessorV(unsigned idx, BasicBlock *B);
|
|
};
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// UnreachableInst Class
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
//===---------------------------------------------------------------------------
|
|
/// UnreachableInst - This function has undefined behavior. In particular, the
|
|
/// presence of this instruction indicates some higher level knowledge that the
|
|
/// end of the block cannot be reached.
|
|
///
|
|
class UnreachableInst : public TerminatorInst {
|
|
public:
|
|
explicit UnreachableInst(Instruction *InsertBefore = 0)
|
|
: TerminatorInst(Instruction::Unreachable, 0, 0, InsertBefore) {
|
|
}
|
|
explicit UnreachableInst(BasicBlock *InsertAtEnd)
|
|
: TerminatorInst(Instruction::Unreachable, 0, 0, InsertAtEnd) {
|
|
}
|
|
|
|
virtual UnreachableInst *clone() const;
|
|
|
|
unsigned getNumSuccessors() const { return 0; }
|
|
|
|
// Methods for support type inquiry through isa, cast, and dyn_cast:
|
|
static inline bool classof(const UnreachableInst *) { return true; }
|
|
static inline bool classof(const Instruction *I) {
|
|
return I->getOpcode() == Instruction::Unreachable;
|
|
}
|
|
static inline bool classof(const Value *V) {
|
|
return isa<Instruction>(V) && classof(cast<Instruction>(V));
|
|
}
|
|
private:
|
|
virtual BasicBlock *getSuccessorV(unsigned idx) const;
|
|
virtual unsigned getNumSuccessorsV() const;
|
|
virtual void setSuccessorV(unsigned idx, BasicBlock *B);
|
|
};
|
|
|
|
} // End llvm namespace
|
|
|
|
#endif
|