CGBlocks.cpp File Reference (original) (raw)

#include "[CGBlocks.h](CGBlocks%5F8h%5Fsource.html)"
#include "[CGCXXABI.h](CGCXXABI%5F8h%5Fsource.html)"
#include "[CGDebugInfo.h](CGDebugInfo%5F8h%5Fsource.html)"
#include "[CGObjCRuntime.h](CGObjCRuntime%5F8h%5Fsource.html)"
#include "[CGOpenCLRuntime.h](CGOpenCLRuntime%5F8h%5Fsource.html)"
#include "[CodeGenFunction.h](CodeGenFunction%5F8h%5Fsource.html)"
#include "[CodeGenModule.h](CodeGenModule%5F8h%5Fsource.html)"
#include "[CodeGenPGO.h](CodeGenPGO%5F8h%5Fsource.html)"
#include "[ConstantEmitter.h](ConstantEmitter%5F8h%5Fsource.html)"
#include "[TargetInfo.h](lib%5F2CodeGen%5F2TargetInfo%5F8h%5Fsource.html)"
#include "[clang/AST/Attr.h](AST%5F2Attr%5F8h%5Fsource.html)"
#include "[clang/AST/DeclObjC.h](DeclObjC%5F8h%5Fsource.html)"
#include "[clang/CodeGen/ConstantInitBuilder.h](ConstantInitBuilder%5F8h%5Fsource.html)"
#include "llvm/IR/DataLayout.h"
#include "llvm/IR/Module.h"
#include "llvm/Support/ScopedPrinter.h"
#include <algorithm>
#include <cstdio>

Go to the source code of this file.

Functions
static llvm::Constant *	buildGlobalBlock (CodeGenModule &CGM, const CGBlockInfo &blockInfo, llvm::Constant *blockFn)
	Build the given block as a global block.
static llvm::Constant *	buildCopyHelper (CodeGenModule &CGM, const CGBlockInfo &blockInfo)
	Build the helper function to copy a block.
static llvm::Constant *	buildDisposeHelper (CodeGenModule &CGM, const CGBlockInfo &blockInfo)
	Build the helper function to dispose of a block.
static std::string	getBlockCaptureStr (const CGBlockInfo::Capture &Cap, CaptureStrKind StrKind, CharUnits BlockAlignment, CodeGenModule &CGM)
static std::string	getBlockDescriptorName (const CGBlockInfo &BlockInfo, CodeGenModule &CGM)
static llvm::Constant *	buildBlockDescriptor (CodeGenModule &CGM, const CGBlockInfo &blockInfo)
	buildBlockDescriptor - Build the block descriptor meta-data for a block.
static std::pair< BlockCaptureEntityKind, BlockFieldFlags >	computeCopyInfoForBlockCapture (const BlockDecl::Capture &CI, QualType T, const LangOptions &LangOpts)
static std::pair< BlockCaptureEntityKind, BlockFieldFlags >	computeDestroyInfoForBlockCapture (const BlockDecl::Capture &CI, QualType T, const LangOptions &LangOpts)
static void	addBlockLayout (CharUnits align, CharUnits size, const BlockDecl::Capture capture, llvm::Type type, QualType fieldType, SmallVectorImpl< BlockLayoutChunk > &Layout, CGBlockInfo &Info, CodeGenModule &CGM)
static bool	isSafeForCXXConstantCapture (QualType type)
	Determines if the given type is safe for constant capture in C++.
static llvm::Constant *	tryCaptureAsConstant (CodeGenModule &CGM, CodeGenFunction CGF, const VarDecl var)
	It is illegal to modify a const object after initialization.
static CharUnits	getLowBit (CharUnits v)
	Get the low bit of a nonzero character count.
static void	initializeForBlockHeader (CodeGenModule &CGM, CGBlockInfo &info, SmallVectorImpl< llvm::Type * > &elementTypes)
static QualType	getCaptureFieldType (const CodeGenFunction &CGF, const BlockDecl::Capture &CI)
static void	computeBlockInfo (CodeGenModule &CGM, CodeGenFunction *CGF, CGBlockInfo &info)
	Compute the layout of the given block.
static std::string	getCopyDestroyHelperFuncName (const SmallVectorImpl< CGBlockInfo::Capture > &Captures, CharUnits BlockAlignment, CaptureStrKind StrKind, CodeGenModule &CGM)
static void	pushCaptureCleanup (BlockCaptureEntityKind CaptureKind, Address Field, QualType CaptureType, BlockFieldFlags Flags, bool ForCopyHelper, VarDecl *Var, CodeGenFunction &CGF)
static void	setBlockHelperAttributesVisibility (bool CapturesNonExternalType, llvm::Function *Fn, const CGFunctionInfo &FI, CodeGenModule &CGM)
static BlockFieldFlags	getBlockFieldFlagsForObjCObjectPointer (const BlockDecl::Capture &CI, QualType T)
static llvm::Constant *	generateByrefCopyHelper (CodeGenFunction &CGF, const BlockByrefInfo &byrefInfo, BlockByrefHelpers &generator)
static llvm::Constant *	buildByrefCopyHelper (CodeGenModule &CGM, const BlockByrefInfo &byrefInfo, BlockByrefHelpers &generator)
	Build the copy helper for a __block variable.
static llvm::Constant *	generateByrefDisposeHelper (CodeGenFunction &CGF, const BlockByrefInfo &byrefInfo, BlockByrefHelpers &generator)
	Generate code for a __block variable's dispose helper.
static llvm::Constant *	buildByrefDisposeHelper (CodeGenModule &CGM, const BlockByrefInfo &byrefInfo, BlockByrefHelpers &generator)
	Build the dispose helper for a __block variable.
template
static T *	buildByrefHelpers (CodeGenModule &CGM, const BlockByrefInfo &byrefInfo, T &&generator)
	Lazily build the copy and dispose helpers for a __block variable with the given information.
static void	configureBlocksRuntimeObject (CodeGenModule &CGM, llvm::Constant *C)
	Adjust the declaration of something from the blocks API.

◆ addBlockLayout()

◆ buildBlockDescriptor()

buildBlockDescriptor - Build the block descriptor meta-data for a block.

buildBlockDescriptor is accessed from 5th field of the Block_literal meta-data and contains stationary information about the block literal. Its definition will have 4 (or optionally 6) words.

struct Block_descriptor {

unsigned long reserved;

unsigned long size;

void *copy_func_helper_decl;

void *destroy_func_decl;

void *block_method_encoding_address;

void *block_layout_info;

};

Definition at line 151 of file CGBlocks.cpp.