BitcodeWriter.cpp File Reference

#include "llvm/Bitcode/ReaderWriter.h"
#include "llvm/Bitcode/BitstreamWriter.h"
#include "llvm/Bitcode/LLVMBitCodes.h"
#include "ValueEnumerator.h"
#include "llvm/Constants.h"
#include "llvm/DerivedTypes.h"
#include "llvm/InlineAsm.h"
#include "llvm/Instructions.h"
#include "llvm/Module.h"
#include "llvm/TypeSymbolTable.h"
#include "llvm/ValueSymbolTable.h"
#include "llvm/Support/MathExtras.h"
#include "llvm/Support/Streams.h"
#include "llvm/Support/raw_ostream.h"
#include "llvm/System/Program.h"

Include dependency graph for BitcodeWriter.cpp:

Enumeration Type Documentation

anonymous enum

These are manifest constants used by the bitcode writer. They do not need to be kept in sync with the reader, but need to be consistent within this file.

Enumerator:

CurVersion
VST_ENTRY_8_ABBREV
VST_ENTRY_7_ABBREV
VST_ENTRY_6_ABBREV
VST_BBENTRY_6_ABBREV
CONSTANTS_SETTYPE_ABBREV
CONSTANTS_INTEGER_ABBREV
CONSTANTS_CE_CAST_Abbrev
CONSTANTS_NULL_Abbrev
FUNCTION_INST_LOAD_ABBREV
FUNCTION_INST_BINOP_ABBREV
FUNCTION_INST_CAST_ABBREV
FUNCTION_INST_RET_VOID_ABBREV
FUNCTION_INST_RET_VAL_ABBREV
FUNCTION_INST_UNREACHABLE_ABBREV

Definition at line 33 of file BitcodeWriter.cpp.

anonymous enum

EmitDarwinBCHeader - If generating a bc file on darwin, we have to emit a header and trailer to make it compatible with the system archiver. To do this we emit the following header, and then emit a trailer that pads the file out to be a multiple of 16 bytes.

struct bc_header { uint32_t Magic; // 0x0B17C0DE uint32_t Version; // Version, currently always 0. uint32_t BitcodeOffset; // Offset to traditional bitcode file. uint32_t BitcodeSize; // Size of traditional bitcode file. uint32_t CPUType; // CPU specifier. ... potentially more later ... };

Enumerator:

DarwinBCSizeFieldOffset
DarwinBCHeaderSize

Definition at line 1294 of file BitcodeWriter.cpp.

Function Documentation

static void EmitDarwinBCHeader	(	BitstreamWriter &	Stream,
		const std::string &	TT
	)			`[static]`

Definition at line 1299 of file BitcodeWriter.cpp.

References DarwinBCHeaderSize, and llvm::BitstreamWriter::Emit().

Referenced by llvm::WriteBitcodeToStream().

static void EmitDarwinBCTrailer	(	BitstreamWriter &	Stream,
		unsigned	BufferSize
	)			`[static]`

EmitDarwinBCTrailer - Emit the darwin epilog after the bitcode file and finalize the header.

Definition at line 1334 of file BitcodeWriter.cpp.

References llvm::BitstreamWriter::BackpatchWord(), DarwinBCHeaderSize, DarwinBCSizeFieldOffset, and llvm::BitstreamWriter::Emit().

Referenced by llvm::WriteBitcodeToStream().

static unsigned GetEncodedBinaryOpcode ( unsigned Opcode ) [static]

Definition at line 76 of file BitcodeWriter.cpp.

References Add(), And(), llvm::bitc::BINOP_ADD, llvm::bitc::BINOP_AND, llvm::bitc::BINOP_ASHR, llvm::bitc::BINOP_LSHR, llvm::bitc::BINOP_MUL, llvm::bitc::BINOP_OR, llvm::bitc::BINOP_SDIV, llvm::bitc::BINOP_SHL, llvm::bitc::BINOP_SREM, llvm::bitc::BINOP_SUB, llvm::bitc::BINOP_UDIV, llvm::bitc::BINOP_UREM, llvm::bitc::BINOP_XOR, LShr, llvm::APIntOps::Or(), and llvm::APIntOps::Xor().

Referenced by WriteConstants(), and WriteInstruction().

static unsigned GetEncodedCastOpcode ( unsigned Opcode ) [static]

Definition at line 58 of file BitcodeWriter.cpp.

References BitCast, llvm::bitc::CAST_BITCAST, llvm::bitc::CAST_FPEXT, llvm::bitc::CAST_FPTOSI, llvm::bitc::CAST_FPTOUI, llvm::bitc::CAST_FPTRUNC, llvm::bitc::CAST_INTTOPTR, llvm::bitc::CAST_PTRTOINT, llvm::bitc::CAST_SEXT, llvm::bitc::CAST_SITOFP, llvm::bitc::CAST_TRUNC, llvm::bitc::CAST_UITOFP, llvm::bitc::CAST_ZEXT, FPToUI, FPTrunc, PtrToInt, llvm::Attribute::SExt, UIToFP, and ZExt.

Referenced by WriteConstants(), and WriteInstruction().

static unsigned getEncodedLinkage ( const GlobalValue * GV ) [static]

Definition at line 274 of file BitcodeWriter.cpp.

References llvm::GlobalValue::getLinkage().

Referenced by WriteModuleInfo().

static unsigned getEncodedVisibility ( const GlobalValue * GV ) [static]

Definition at line 291 of file BitcodeWriter.cpp.

References llvm::GlobalValue::getVisibility().

Referenced by WriteModuleInfo().

static bool PushValueAndType	(	const Value *	V,
		unsigned	InstID,
		SmallVector< unsigned, 64 > &	Vals,
		ValueEnumerator &	VE
	)			`[static]`

PushValueAndType - The file has to encode both the value and type id for many values, because we need to know what type to create for forward references. However, most operands are not forward references, so this type field is not needed.

This function adds V's value ID to Vals. If the value ID is higher than the instruction ID, then it is a forward reference, and it also includes the type ID.

Definition at line 701 of file BitcodeWriter.cpp.

References llvm::Value::getType(), llvm::ValueEnumerator::getTypeID(), llvm::ValueEnumerator::getValueID(), and llvm::SmallVectorImpl< T >::push_back().

Referenced by WriteInstruction().

static void WriteAttributeTable	(	const ValueEnumerator &	VE,
		BitstreamWriter &	Stream
	)			`[static]`

Definition at line 112 of file BitcodeWriter.cpp.

References A, Alignment, llvm::AttributeWithIndex::Attrs, llvm::SmallVectorImpl< T >::clear(), llvm::BitstreamWriter::EmitRecord(), llvm::BitstreamWriter::EnterSubblock(), llvm::BitstreamWriter::ExitBlock(), llvm::ValueEnumerator::getAttributes(), llvm::AttrListPtr::getNumSlots(), llvm::AttrListPtr::getSlot(), llvm::AttributeWithIndex::Index, llvm::bitc::PARAMATTR_BLOCK_ID, llvm::bitc::PARAMATTR_CODE_ENTRY, and llvm::SmallVectorImpl< T >::push_back().

Referenced by WriteModule().

static void WriteBlockInfo	(	const ValueEnumerator &	VE,
		BitstreamWriter &	Stream
	)			`[static]`

Definition at line 1077 of file BitcodeWriter.cpp.

References llvm::BitCodeAbbrev::Add(), llvm::bitc::CONSTANTS_BLOCK_ID, CONSTANTS_CE_CAST_Abbrev, CONSTANTS_INTEGER_ABBREV, CONSTANTS_NULL_Abbrev, CONSTANTS_SETTYPE_ABBREV, llvm::bitc::CST_CODE_CE_CAST, llvm::bitc::CST_CODE_INTEGER, llvm::bitc::CST_CODE_NULL, llvm::bitc::CST_CODE_SETTYPE, llvm::BitstreamWriter::EmitBlockInfoAbbrev(), llvm::BitstreamWriter::EnterBlockInfoBlock(), llvm::BitstreamWriter::ExitBlock(), llvm::bitc::FUNC_CODE_INST_BINOP, llvm::bitc::FUNC_CODE_INST_CAST, llvm::bitc::FUNC_CODE_INST_LOAD, llvm::bitc::FUNC_CODE_INST_RET, llvm::bitc::FUNC_CODE_INST_UNREACHABLE, llvm::bitc::FUNCTION_BLOCK_ID, FUNCTION_INST_BINOP_ABBREV, FUNCTION_INST_CAST_ABBREV, FUNCTION_INST_LOAD_ABBREV, FUNCTION_INST_RET_VAL_ABBREV, FUNCTION_INST_RET_VOID_ABBREV, FUNCTION_INST_UNREACHABLE_ABBREV, llvm::ValueEnumerator::getTypes(), llvm::Log2_32_Ceil(), llvm::bitc::VALUE_SYMTAB_BLOCK_ID, VST_BBENTRY_6_ABBREV, llvm::bitc::VST_CODE_BBENTRY, llvm::bitc::VST_CODE_ENTRY, VST_ENTRY_6_ABBREV, VST_ENTRY_7_ABBREV, and VST_ENTRY_8_ABBREV.

Referenced by WriteModule().

static void WriteConstants	(	unsigned	FirstVal,
		unsigned	LastVal,
		const ValueEnumerator &	VE,
		BitstreamWriter &	Stream,
		bool	isGlobal
	)			`[static]`

Definition at line 448 of file BitcodeWriter.cpp.

Referenced by WriteFunction(), and WriteModuleConstants().

static void WriteFunction	(	const Function &	F,
		ValueEnumerator &	VE,
		BitstreamWriter &	Stream
	)			`[static]`

WriteFunction - Emit a function body to the module stream.

Definition at line 999 of file BitcodeWriter.cpp.

References BB, llvm::MachineBasicBlock::begin(), llvm::Function::begin(), llvm::SmallVectorImpl< T >::clear(), E, llvm::BitstreamWriter::EmitRecord(), llvm::MachineBasicBlock::end(), llvm::Function::end(), llvm::BitstreamWriter::EnterSubblock(), llvm::BitstreamWriter::ExitBlock(), llvm::bitc::FUNC_CODE_DECLAREBLOCKS, llvm::bitc::FUNCTION_BLOCK_ID, llvm::ValueEnumerator::getBasicBlocks(), llvm::ValueEnumerator::getFunctionConstantRange(), llvm::Function::getValueSymbolTable(), llvm::ValueEnumerator::incorporateFunction(), llvm::ValueEnumerator::purgeFunction(), llvm::SmallVectorImpl< T >::push_back(), Vals, WriteConstants(), WriteInstruction(), and WriteValueSymbolTable().

Referenced by WriteModule().

static void WriteInstruction	(	const Instruction &	I,
		unsigned	InstID,
		ValueEnumerator &	VE,
		BitstreamWriter &	Stream,
		SmallVector< unsigned, 64 > &	Vals
	)			`[static]`

WriteInstruction - Emit an instruction to the specified stream.

Definition at line 714 of file BitcodeWriter.cpp.

Referenced by WriteFunction().

static void WriteModule	(	const Module *	M,
		BitstreamWriter &	Stream
	)			`[static]`

WriteModule - Emit the specified module to the bitstream.

Definition at line 1228 of file BitcodeWriter.cpp.

References llvm::Module::begin(), CurVersion, E, llvm::BitstreamWriter::EmitRecord(), llvm::Module::end(), llvm::BitstreamWriter::EnterSubblock(), llvm::BitstreamWriter::ExitBlock(), llvm::Module::getTypeSymbolTable(), llvm::Module::getValueSymbolTable(), llvm::bitc::MODULE_BLOCK_ID, llvm::bitc::MODULE_CODE_PURGEVALS, llvm::bitc::MODULE_CODE_VERSION, llvm::ValueEnumerator::PurgeAggregateValues(), llvm::SmallVectorImpl< T >::push_back(), Vals, VE, WriteAttributeTable(), WriteBlockInfo(), WriteFunction(), WriteModuleConstants(), WriteModuleInfo(), WriteTypeSymbolTable(), WriteTypeTable(), and WriteValueSymbolTable().

Referenced by llvm::WriteBitcodeToStream().

static void WriteModuleConstants	(	const ValueEnumerator &	VE,
		BitstreamWriter &	Stream
	)			`[static]`

Definition at line 679 of file BitcodeWriter.cpp.

References first, llvm::ValueEnumerator::getValues(), Vals, and WriteConstants().

Referenced by WriteModule().

static void WriteModuleInfo	(	const Module *	M,
		const ValueEnumerator &	VE,
		BitstreamWriter &	Stream
	)			`[static]`

Definition at line 302 of file BitcodeWriter.cpp.

Referenced by WriteModule().

static void WriteStringRecord	(	unsigned	Code,
		const std::string &	Str,
		unsigned	AbbrevToUse,
		BitstreamWriter &	Stream
	)			`[static]`

Definition at line 99 of file BitcodeWriter.cpp.

References llvm::BitstreamWriter::EmitRecord(), llvm::SmallVectorImpl< T >::push_back(), and Vals.

Referenced by WriteModuleInfo().

static void WriteTypeSymbolTable	(	const TypeSymbolTable &	TST,
		const ValueEnumerator &	VE,
		BitstreamWriter &	Stream
	)			`[static]`

WriteTypeSymbolTable - Emit a block for the specified type symtab.

Definition at line 1037 of file BitcodeWriter.cpp.

References llvm::BitCodeAbbrev::Add(), llvm::TypeSymbolTable::begin(), llvm::SmallVectorImpl< T >::clear(), llvm::BitstreamWriter::EmitAbbrev(), llvm::BitstreamWriter::EmitRecord(), llvm::TypeSymbolTable::empty(), llvm::TypeSymbolTable::end(), llvm::BitstreamWriter::EnterSubblock(), llvm::BitstreamWriter::ExitBlock(), llvm::ValueEnumerator::getTypeID(), llvm::ValueEnumerator::getTypes(), llvm::Log2_32_Ceil(), llvm::SmallVectorImpl< T >::push_back(), llvm::bitc::TYPE_SYMTAB_BLOCK_ID, and llvm::bitc::VST_CODE_ENTRY.

Referenced by WriteModule().

static void WriteTypeTable	(	const ValueEnumerator &	VE,
		BitstreamWriter &	Stream
	)			`[static]`

WriteTypeTable - Write out the type table for a module.

Definition at line 146 of file BitcodeWriter.cpp.

Referenced by WriteModule().

static void WriteValueSymbolTable	(	const ValueSymbolTable &	VST,
		const ValueEnumerator &	VE,
		BitstreamWriter &	Stream
	)			`[static]`


Enumerations
enum	{ CurVersion = 0, VST_ENTRY_8_ABBREV = bitc::FIRST_APPLICATION_ABBREV, VST_ENTRY_7_ABBREV, VST_ENTRY_6_ABBREV, VST_BBENTRY_6_ABBREV, CONSTANTS_SETTYPE_ABBREV = bitc::FIRST_APPLICATION_ABBREV, CONSTANTS_INTEGER_ABBREV, CONSTANTS_CE_CAST_Abbrev, CONSTANTS_NULL_Abbrev, FUNCTION_INST_LOAD_ABBREV = bitc::FIRST_APPLICATION_ABBREV, FUNCTION_INST_BINOP_ABBREV, FUNCTION_INST_CAST_ABBREV, FUNCTION_INST_RET_VOID_ABBREV, FUNCTION_INST_RET_VAL_ABBREV, FUNCTION_INST_UNREACHABLE_ABBREV }
enum	{ DarwinBCSizeFieldOffset = 34, DarwinBCHeaderSize = 54 }
Functions
static unsigned	GetEncodedCastOpcode (unsigned Opcode)
static unsigned	GetEncodedBinaryOpcode (unsigned Opcode)
static void	WriteStringRecord (unsigned Code, const std::string &Str, unsigned AbbrevToUse, BitstreamWriter &Stream)
static void	WriteAttributeTable (const ValueEnumerator &VE, BitstreamWriter &Stream)
static void	WriteTypeTable (const ValueEnumerator &VE, BitstreamWriter &Stream)
	WriteTypeTable - Write out the type table for a module.
static unsigned	getEncodedLinkage (const GlobalValue *GV)
static unsigned	getEncodedVisibility (const GlobalValue *GV)
static void	WriteModuleInfo (const Module *M, const ValueEnumerator &VE, BitstreamWriter &Stream)
static void	WriteConstants (unsigned FirstVal, unsigned LastVal, const ValueEnumerator &VE, BitstreamWriter &Stream, bool isGlobal)
static void	WriteModuleConstants (const ValueEnumerator &VE, BitstreamWriter &Stream)
static bool	PushValueAndType (const Value *V, unsigned InstID, SmallVector< unsigned, 64 > &Vals, ValueEnumerator &VE)
static void	WriteInstruction (const Instruction &I, unsigned InstID, ValueEnumerator &VE, BitstreamWriter &Stream, SmallVector< unsigned, 64 > &Vals)
	WriteInstruction - Emit an instruction to the specified stream.
static void	WriteValueSymbolTable (const ValueSymbolTable &VST, const ValueEnumerator &VE, BitstreamWriter &Stream)
static void	WriteFunction (const Function &F, ValueEnumerator &VE, BitstreamWriter &Stream)
	WriteFunction - Emit a function body to the module stream.
static void	WriteTypeSymbolTable (const TypeSymbolTable &TST, const ValueEnumerator &VE, BitstreamWriter &Stream)
	WriteTypeSymbolTable - Emit a block for the specified type symtab.
static void	WriteBlockInfo (const ValueEnumerator &VE, BitstreamWriter &Stream)
static void	WriteModule (const Module *M, BitstreamWriter &Stream)
	WriteModule - Emit the specified module to the bitstream.
static void	EmitDarwinBCHeader (BitstreamWriter &Stream, const std::string &TT)
static void	EmitDarwinBCTrailer (BitstreamWriter &Stream, unsigned BufferSize)
void	llvm::WriteBitcodeToFile (const Module *M, std::ostream &Out)
void	llvm::WriteBitcodeToFile (const Module *M, raw_ostream &Out)
void	llvm::WriteBitcodeToStream (const Module *M, BitstreamWriter &Stream)

BitcodeWriter.cpp File Reference

Enumerations

Functions

Enumeration Type Documentation

Function Documentation