+++ /dev/null
-//===-- TransformInternals.h - Shared functions for Transforms --*- C++ -*-===//
-//
-// The LLVM Compiler Infrastructure
-//
-// This file was developed by the LLVM research group and is distributed under
-// the University of Illinois Open Source License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-//
-// This header file declares shared functions used by the different components
-// of the Transforms library.
-//
-//===----------------------------------------------------------------------===//
-
-#ifndef TRANSFORM_INTERNALS_H
-#define TRANSFORM_INTERNALS_H
-
-#include "llvm/BasicBlock.h"
-#include "llvm/Target/TargetData.h"
-#include "llvm/DerivedTypes.h"
-#include "llvm/Constants.h"
-#include <map>
-#include <set>
-
-namespace llvm {
-
-static inline int64_t getConstantValue(const ConstantInt *CPI) {
- return (int64_t)cast<ConstantInt>(CPI)->getZExtValue();
-}
-
-
-// getPointedToComposite - If the argument is a pointer type, and the pointed to
-// value is a composite type, return the composite type, else return null.
-//
-static inline const CompositeType *getPointedToComposite(const Type *Ty) {
- const PointerType *PT = dyn_cast<PointerType>(Ty);
- return PT ? dyn_cast<CompositeType>(PT->getElementType()) : 0;
-}
-
-
-//===----------------------------------------------------------------------===//
-// ValueHandle Class - Smart pointer that occupies a slot on the users USE list
-// that prevents it from being destroyed. This "looks" like an Instruction
-// with Opcode UserOp1.
-//
-class ValueMapCache;
-class ValueHandle : public Instruction {
- Use Op;
- ValueMapCache &Cache;
-public:
- ValueHandle(ValueMapCache &VMC, Value *V);
- ValueHandle(const ValueHandle &);
- ~ValueHandle();
-
- virtual Instruction *clone() const { abort(); return 0; }
-
- virtual const char *getOpcodeName() const {
- return "ValueHandle";
- }
-
- inline bool operator<(const ValueHandle &VH) const {
- return getOperand(0) < VH.getOperand(0);
- }
-
- // Methods for support type inquiry through isa, cast, and dyn_cast:
- static inline bool classof(const ValueHandle *) { return true; }
- static inline bool classof(const Instruction *I) {
- return (I->getOpcode() == Instruction::UserOp1);
- }
- static inline bool classof(const Value *V) {
- return isa<Instruction>(V) && classof(cast<Instruction>(V));
- }
-};
-
-
-// ------------- Expression Conversion ---------------------
-
-typedef std::map<const Value*, const Type*> ValueTypeCache;
-
-class ValueMapCache {
-public:
- // Operands mapped - Contains an entry if the first value (the user) has had
- // the second value (the operand) mapped already.
- //
- std::set<const User*> OperandsMapped;
-
- // Expression Map - Contains an entry from the old value to the new value of
- // an expression that has been converted over.
- //
- std::map<const Value *, Value *> ExprMap;
- typedef std::map<const Value *, Value *> ExprMapTy;
-
- // Cast Map - Cast instructions can have their source and destination values
- // changed independently for each part. Because of this, our old naive
- // implementation would create a TWO new cast instructions, which would cause
- // all kinds of problems. Here we keep track of the newly allocated casts, so
- // that we only create one for a particular instruction.
- //
- std::set<ValueHandle> NewCasts;
-};
-
-
-bool ExpressionConvertibleToType(Value *V, const Type *Ty, ValueTypeCache &Map,
- const TargetData &TD);
-Value *ConvertExpressionToType(Value *V, const Type *Ty, ValueMapCache &VMC,
- const TargetData &TD);
-
-// ValueConvertibleToType - Return true if it is possible
-bool ValueConvertibleToType(Value *V, const Type *Ty,
- ValueTypeCache &ConvertedTypes,
- const TargetData &TD);
-
-void ConvertValueToNewType(Value *V, Value *NewVal, ValueMapCache &VMC,
- const TargetData &TD);
-
-
-// getStructOffsetType - Return a vector of offsets that are to be used to index
-// into the specified struct type to get as close as possible to index as we
-// can. Note that it is possible that we cannot get exactly to Offset, in which
-// case we update offset to be the offset we actually obtained. The resultant
-// leaf type is returned.
-//
-// If StopEarly is set to true (the default), the first object with the
-// specified type is returned, even if it is a struct type itself. In this
-// case, this routine will not drill down to the leaf type. Set StopEarly to
-// false if you want a leaf
-//
-const Type *getStructOffsetType(const Type *Ty, unsigned &Offset,
- std::vector<Value*> &Offsets,
- const TargetData &TD, bool StopEarly = true);
-
-} // End llvm namespace
-
-#endif