Remove Regions.h and Regions.cpp, since we are now using an even more abstract representation of "memory regions" in the static analyzer.
llvm-svn: 55515
This commit is contained in:
parent
e91874f71f
commit
75d2ac956f
|
@ -1,183 +0,0 @@
|
|||
//==- Regions.h - Abstract memory locations ------------------------*- C++ -*-//
|
||||
//
|
||||
// The LLVM Compiler Infrastructure
|
||||
//
|
||||
// This file is distributed under the University of Illinois Open Source
|
||||
// License. See LICENSE.TXT for details.
|
||||
//
|
||||
//===----------------------------------------------------------------------===//
|
||||
//
|
||||
// This file defines Region and its subclasses. Regions represent abstract
|
||||
// memory locations.
|
||||
//
|
||||
//===----------------------------------------------------------------------===//
|
||||
|
||||
#include "llvm/Support/DataTypes.h"
|
||||
#include "llvm/Support/Casting.h"
|
||||
#include "llvm/ADT/FoldingSet.h"
|
||||
#include "clang/Analysis/PathSensitive/SymbolManager.h"
|
||||
|
||||
#ifndef LLVM_CLANG_ANALYSIS_REGIONS_H
|
||||
#define LLVM_CLANG_ANALYSIS_REGIONS_H
|
||||
|
||||
namespace llvm {
|
||||
class APSInt;
|
||||
}
|
||||
|
||||
namespace clang {
|
||||
|
||||
class BasicValueFactory;
|
||||
|
||||
|
||||
//===----------------------------------------------------------------------===//
|
||||
// Region Extents.
|
||||
//===----------------------------------------------------------------------===//
|
||||
|
||||
class RegionExtent {
|
||||
public:
|
||||
enum Kind { Unknown = 0, Int = 0, Sym = 1 };
|
||||
|
||||
protected:
|
||||
const uintptr_t Raw;
|
||||
RegionExtent(uintptr_t raw, Kind k) : Raw(raw | k) {}
|
||||
uintptr_t getData() const { return Raw & ~0x1; }
|
||||
|
||||
public:
|
||||
// Folding-set profiling.
|
||||
void Profile(llvm::FoldingSetNodeID& ID) const {
|
||||
ID.AddPointer((void*) Raw);
|
||||
}
|
||||
// Comparing extents.
|
||||
bool operator==(const RegionExtent& R) const {
|
||||
return Raw == R.Raw;
|
||||
}
|
||||
bool operator!=(const RegionExtent& R) const {
|
||||
return Raw != R.Raw;
|
||||
}
|
||||
// Implement isa<T> support.
|
||||
Kind getKind() const { return Kind(Raw & 0x1); }
|
||||
uintptr_t getRaw() const { return Raw; }
|
||||
|
||||
static inline bool classof(const RegionExtent*) {
|
||||
return true;
|
||||
}
|
||||
};
|
||||
|
||||
class UnknownExtent : public RegionExtent {
|
||||
public:
|
||||
UnknownExtent() : RegionExtent(0,Unknown) {}
|
||||
|
||||
// Implement isa<T> support.
|
||||
static inline bool classof(const RegionExtent* E) {
|
||||
return E->getRaw() == 0;
|
||||
}
|
||||
};
|
||||
|
||||
class IntExtent : public RegionExtent {
|
||||
public:
|
||||
IntExtent(const llvm::APSInt& X) : RegionExtent((uintptr_t) &X, Int) {}
|
||||
|
||||
const llvm::APSInt& getInt() const {
|
||||
return *((llvm::APSInt*) getData());
|
||||
}
|
||||
|
||||
// Implement isa<T> support.
|
||||
static inline bool classof(const RegionExtent* E) {
|
||||
return E->getKind() == Int && E->getRaw() != 0;
|
||||
}
|
||||
};
|
||||
|
||||
class SymExtent : public RegionExtent {
|
||||
public:
|
||||
SymExtent(SymbolID S) : RegionExtent(S.getNumber() << 1, Sym) {}
|
||||
|
||||
SymbolID getSymbol() const { return SymbolID(getData() >> 1); }
|
||||
|
||||
// Implement isa<T> support.
|
||||
static inline bool classof(const RegionExtent* E) {
|
||||
return E->getKind() == Sym;
|
||||
}
|
||||
};
|
||||
|
||||
//===----------------------------------------------------------------------===//
|
||||
// Regions.
|
||||
//===----------------------------------------------------------------------===//
|
||||
|
||||
class Region {
|
||||
public:
|
||||
enum Kind { Var = 0x0, Anon = 0x1 };
|
||||
|
||||
private:
|
||||
uintptr_t Raw;
|
||||
|
||||
protected:
|
||||
Region(const void* data, Kind kind)
|
||||
: Raw((uintptr_t) data | (uintptr_t) kind) {
|
||||
assert ((reinterpret_cast<uintptr_t>(const_cast<void*>(data)) & 0x1) == 0
|
||||
&& "Address must have at least a 2-byte alignment.");
|
||||
}
|
||||
|
||||
const void* getData() const { return (const void*) (Raw & ~0x1); }
|
||||
|
||||
public:
|
||||
// Folding-set profiling.
|
||||
void Profile(llvm::FoldingSetNodeID& ID) const { ID.AddPointer((void*) Raw); }
|
||||
|
||||
// Comparing regions.
|
||||
bool operator==(const Region& R) const { return Raw == R.Raw; }
|
||||
bool operator!=(const Region& R) const { return Raw != R.Raw; }
|
||||
|
||||
// Implement isa<T> support.
|
||||
Kind getKind() const { return Kind (Raw & 0x1); }
|
||||
static inline bool classof(const Region*) { return true; }
|
||||
};
|
||||
|
||||
//===----------------------------------------------------------------------===//
|
||||
// Region Types.
|
||||
//===----------------------------------------------------------------------===//
|
||||
|
||||
class VarRegion : public Region {
|
||||
public:
|
||||
VarRegion(VarDecl* VD) : Region(VD, Region::Var) {}
|
||||
|
||||
/// getDecl - Return the declaration of the variable the region represents.
|
||||
const VarDecl* getDecl() const { return (const VarDecl*) getData(); }
|
||||
operator const VarDecl*() const { return getDecl(); }
|
||||
|
||||
RegionExtent getExtent(BasicValueFactory& BV) const;
|
||||
|
||||
// Implement isa<T> support.
|
||||
static inline bool classof(const Region* R) {
|
||||
return R->getKind() == Region::Var;
|
||||
}
|
||||
|
||||
static inline bool classof(const VarRegion*) {
|
||||
return true;
|
||||
}
|
||||
};
|
||||
|
||||
class AnonRegion : public Region {
|
||||
protected:
|
||||
friend class Region;
|
||||
|
||||
AnonRegion(uintptr_t RegionID) : Region((void*) (RegionID<<1), Region::Anon) {
|
||||
assert (((RegionID << 1) >> 1) == RegionID);
|
||||
}
|
||||
|
||||
public:
|
||||
|
||||
uintptr_t getID() const { return ((uintptr_t) getData()) >> 1; }
|
||||
|
||||
// Implement isa<T> support.
|
||||
static inline bool classof(const Region* R) {
|
||||
return R->getKind() == Region::Anon;
|
||||
}
|
||||
|
||||
static inline bool classof(const AnonRegion*) {
|
||||
return true;
|
||||
}
|
||||
};
|
||||
|
||||
} // end clang namespace
|
||||
|
||||
#endif
|
|
@ -1,34 +0,0 @@
|
|||
//==- Regions.cpp - Abstract memory locations ----------------------*- C++ -*-//
|
||||
//
|
||||
// The LLVM Compiler Infrastructure
|
||||
//
|
||||
// This file is distributed under the University of Illinois Open Source
|
||||
// License. See LICENSE.TXT for details.
|
||||
//
|
||||
//===----------------------------------------------------------------------===//
|
||||
//
|
||||
// This file defines Region and its subclasses. Regions represent abstract
|
||||
// memory locations.
|
||||
//
|
||||
//===----------------------------------------------------------------------===//
|
||||
|
||||
#include "clang/Analysis/PathSensitive/Regions.h"
|
||||
#include "clang/Analysis/PathSensitive/BasicValueFactory.h"
|
||||
#include "clang/AST/ASTContext.h"
|
||||
|
||||
using namespace clang;
|
||||
|
||||
RegionExtent VarRegion::getExtent(BasicValueFactory& BV) const {
|
||||
QualType T = getDecl()->getType();
|
||||
|
||||
// FIXME: Add support for VLAs. This may require passing in additional
|
||||
// information, or tracking a different region type.
|
||||
if (!T.getTypePtr()->isConstantSizeType())
|
||||
return UnknownExtent();
|
||||
|
||||
ASTContext& C = BV.getContext();
|
||||
assert (!T->isObjCInterfaceType()); // @interface not a possible VarDecl type.
|
||||
assert (T != C.VoidTy); // void not a possible VarDecl type.
|
||||
return IntExtent(BV.getValue(C.getTypeSize(T), C.VoidPtrTy));
|
||||
}
|
||||
|
Loading…
Reference in New Issue