#ifndef CLANG_CODEGEN_CGBLOCKS_H
#define CLANG_CODEGEN_CGBLOCKS_H
#include "CodeGenTypes.h"
#include "clang/AST/Type.h"
#include "llvm/Module.h"
#include "clang/Basic/TargetInfo.h"
#include "clang/AST/CharUnits.h"
#include "clang/AST/Expr.h"
#include "clang/AST/ExprCXX.h"
#include "clang/AST/ExprObjC.h"
#include "CodeGenFunction.h"
#include "CGBuilder.h"
#include "CGCall.h"
#include "CGValue.h"
namespace llvm {
class Module;
class Constant;
class Function;
class GlobalValue;
class TargetData;
class FunctionType;
class PointerType;
class Value;
class LLVMContext;
}
namespace clang {
namespace CodeGen {
class CodeGenModule;
class CGBlockInfo;
enum BlockFlag_t {
BLOCK_HAS_COPY_DISPOSE = (1 << 25),
BLOCK_HAS_CXX_OBJ = (1 << 26),
BLOCK_IS_GLOBAL = (1 << 28),
BLOCK_USE_STRET = (1 << 29),
BLOCK_HAS_SIGNATURE = (1 << 30)
};
class BlockFlags {
uint32_t flags;
BlockFlags(uint32_t flags) : flags(flags) {}
public:
BlockFlags() : flags(0) {}
BlockFlags(BlockFlag_t flag) : flags(flag) {}
uint32_t getBitMask() const { return flags; }
bool empty() const { return flags == 0; }
friend BlockFlags operator|(BlockFlags l, BlockFlags r) {
return BlockFlags(l.flags | r.flags);
}
friend BlockFlags &operator|=(BlockFlags &l, BlockFlags r) {
l.flags |= r.flags;
return l;
}
friend bool operator&(BlockFlags l, BlockFlags r) {
return (l.flags & r.flags);
}
};
inline BlockFlags operator|(BlockFlag_t l, BlockFlag_t r) {
return BlockFlags(l) | BlockFlags(r);
}
enum BlockFieldFlag_t {
BLOCK_FIELD_IS_OBJECT = 0x03,
BLOCK_FIELD_IS_BLOCK = 0x07,
BLOCK_FIELD_IS_BYREF = 0x08,
BLOCK_FIELD_IS_WEAK = 0x10,
BLOCK_FIELD_IS_ARC = 0x40,
BLOCK_BYREF_CALLER = 128,
BLOCK_BYREF_CURRENT_MAX = 256
};
class BlockFieldFlags {
uint32_t flags;
BlockFieldFlags(uint32_t flags) : flags(flags) {}
public:
BlockFieldFlags() : flags(0) {}
BlockFieldFlags(BlockFieldFlag_t flag) : flags(flag) {}
uint32_t getBitMask() const { return flags; }
bool empty() const { return flags == 0; }
bool isSpecialPointer() const { return flags & BLOCK_FIELD_IS_OBJECT; }
friend BlockFieldFlags operator|(BlockFieldFlags l, BlockFieldFlags r) {
return BlockFieldFlags(l.flags | r.flags);
}
friend BlockFieldFlags &operator|=(BlockFieldFlags &l, BlockFieldFlags r) {
l.flags |= r.flags;
return l;
}
friend bool operator&(BlockFieldFlags l, BlockFieldFlags r) {
return (l.flags & r.flags);
}
};
inline BlockFieldFlags operator|(BlockFieldFlag_t l, BlockFieldFlag_t r) {
return BlockFieldFlags(l) | BlockFieldFlags(r);
}
class CGBlockInfo {
public:
llvm::StringRef Name;
unsigned CXXThisIndex;
class Capture {
uintptr_t Data;
EHScopeStack::stable_iterator Cleanup;
public:
bool isIndex() const { return (Data & 1) != 0; }
bool isConstant() const { return !isIndex(); }
unsigned getIndex() const { assert(isIndex()); return Data >> 1; }
llvm::Value *getConstant() const {
assert(isConstant());
return reinterpret_cast<llvm::Value*>(Data);
}
EHScopeStack::stable_iterator getCleanup() const {
assert(isIndex());
return Cleanup;
}
void setCleanup(EHScopeStack::stable_iterator cleanup) {
assert(isIndex());
Cleanup = cleanup;
}
static Capture makeIndex(unsigned index) {
Capture v;
v.Data = (index << 1) | 1;
return v;
}
static Capture makeConstant(llvm::Value *value) {
Capture v;
v.Data = reinterpret_cast<uintptr_t>(value);
return v;
}
};
bool CanBeGlobal : 1;
bool NeedsCopyDispose : 1;
bool HasCXXObject : 1;
mutable bool UsesStret : 1;
llvm::DenseMap<const VarDecl*, Capture> Captures;
llvm::AllocaInst *Address;
llvm::StructType *StructureType;
const BlockDecl *Block;
const BlockExpr *BlockExpression;
CharUnits BlockSize;
CharUnits BlockAlign;
llvm::Instruction *DominatingIP;
CGBlockInfo *NextBlockInfo;
const Capture &getCapture(const VarDecl *var) const {
return const_cast<CGBlockInfo*>(this)->getCapture(var);
}
Capture &getCapture(const VarDecl *var) {
llvm::DenseMap<const VarDecl*, Capture>::iterator
it = Captures.find(var);
assert(it != Captures.end() && "no entry for variable!");
return it->second;
}
const BlockDecl *getBlockDecl() const { return Block; }
const BlockExpr *getBlockExpr() const {
assert(BlockExpression);
assert(BlockExpression->getBlockDecl() == Block);
return BlockExpression;
}
CGBlockInfo(const BlockDecl *blockDecl, llvm::StringRef Name);
};
} }
#endif