MCAssembler.cpp File Reference

#include "llvm/MC/MCAssembler.h"
#include "llvm/ADT/ArrayRef.h"
#include "llvm/ADT/SmallVector.h"
#include "llvm/ADT/Statistic.h"
#include "llvm/ADT/StringRef.h"
#include "llvm/ADT/Twine.h"
#include "llvm/MC/MCAsmBackend.h"
#include "llvm/MC/MCAsmInfo.h"
#include "llvm/MC/MCCodeEmitter.h"
#include "llvm/MC/MCCodeView.h"
#include "llvm/MC/MCContext.h"
#include "llvm/MC/MCDwarf.h"
#include "llvm/MC/MCExpr.h"
#include "llvm/MC/MCFixup.h"
#include "llvm/MC/MCInst.h"
#include "llvm/MC/MCObjectWriter.h"
#include "llvm/MC/MCSFrame.h"
#include "llvm/MC/MCSection.h"
#include "llvm/MC/MCSymbol.h"
#include "llvm/MC/MCValue.h"
#include "llvm/Support/Alignment.h"
#include "llvm/Support/Casting.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/EndianStream.h"
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/LEB128.h"
#include "llvm/Support/raw_ostream.h"
#include <cassert>
#include <cstdint>
#include <tuple>
#include <utility>

Go to the source code of this file.

Namespaces
namespace	llvm
	This is an optimization pass for GlobalISel generic memory operations.
namespace	stats

Macros
#define	DEBUG_TYPE   "assembler"

Functions
static bool	getLabelOffset (const MCAssembler &Asm, const MCSymbol &S, bool ReportError, uint64_t &Val)
static bool	getSymbolOffsetImpl (const MCAssembler &Asm, const MCSymbol &S, bool ReportError, uint64_t &Val)
static void	writeFragment (raw_ostream &OS, const MCAssembler &Asm, const MCFragment &F)
	Write the fragment F to the output file.
static bool	mayCrossBoundary (uint64_t StartAddr, uint64_t Size, Align BoundaryAlignment)
	Check if the branch crosses the boundary.
static bool	isAgainstBoundary (uint64_t StartAddr, uint64_t Size, Align BoundaryAlignment)
	Check if the branch is against the boundary.
static bool	needPadding (uint64_t StartAddr, uint64_t Size, Align BoundaryAlignment)
	Check if the branch needs padding.

Macro Definition Documentation

DEBUG_TYPE

#define DEBUG_TYPE   "assembler"

Definition at line 47 of file MCAssembler.cpp.

Function Documentation

getLabelOffset()

bool getLabelOffset ( const MCAssembler & Asm, const MCSymbol & S, bool ReportError, uint64_t & Val )

static

Definition at line 264 of file MCAssembler.cpp.

References llvm::MCSymbol::getFragment(), llvm::MCSymbol::getName(), llvm::MCSymbol::getOffset(), and llvm::reportFatalUsageError().

Referenced by getSymbolOffsetImpl().

getSymbolOffsetImpl()

bool getSymbolOffsetImpl ( const MCAssembler & Asm, const MCSymbol & S, bool ReportError, uint64_t & Val )

static

Definition at line 276 of file MCAssembler.cpp.

References A(), B(), llvm::MCExpr::evaluateAsValue(), getLabelOffset(), llvm::MCSymbol::getName(), getSymbolOffsetImpl(), llvm::MCSymbol::getVariableValue(), llvm::MCSymbol::isVariable(), llvm::Offset, and llvm::reportFatalUsageError().

Referenced by llvm::MCAssembler::getSymbolOffset(), llvm::MCAssembler::getSymbolOffset(), and getSymbolOffsetImpl().

isAgainstBoundary()

bool isAgainstBoundary ( uint64_t StartAddr, uint64_t Size, Align BoundaryAlignment )

static

Check if the branch is against the boundary.

Parameters

StartAddr	start address of the fused/unfused branch.
Size	size of the fused/unfused branch.
BoundaryAlignment	alignment requirement of the branch.

Returns

true if the branch is against the boundary.

Definition at line 843 of file MCAssembler.cpp.

References Size, and llvm::Align::value().

Referenced by needPadding().

mayCrossBoundary()

bool mayCrossBoundary ( uint64_t StartAddr, uint64_t Size, Align BoundaryAlignment )

static

Check if the branch crosses the boundary.

Parameters

StartAddr	start address of the fused/unfused branch.
Size	size of the fused/unfused branch.
BoundaryAlignment	alignment requirement of the branch.

Returns

true if the branch cross the boundary.

Definition at line 830 of file MCAssembler.cpp.

References llvm::Log2(), and Size.

Referenced by needPadding().

needPadding()

bool needPadding ( uint64_t StartAddr, uint64_t Size, Align BoundaryAlignment )

static

Check if the branch needs padding.

Parameters

StartAddr	start address of the fused/unfused branch.
Size	size of the fused/unfused branch.
BoundaryAlignment	alignment requirement of the branch.

Returns

true if the branch needs padding.

Definition at line 855 of file MCAssembler.cpp.

References isAgainstBoundary(), mayCrossBoundary(), and Size.

writeFragment()

void writeFragment ( raw_ostream & OS, const MCAssembler & Asm, const MCFragment & F )

static

Write the fragment F to the output file.

Definition at line 384 of file MCAssembler.cpp.

References assert(), llvm::cast(), llvm::Count, llvm::Data, E(), F, llvm::MCFragment::FT_Align, llvm::MCFragment::FT_BoundaryAlign, llvm::MCFragment::FT_CVDefRange, llvm::MCFragment::FT_CVInlineLines, llvm::MCFragment::FT_Data, llvm::MCFragment::FT_Dwarf, llvm::MCFragment::FT_DwarfFrame, llvm::MCFragment::FT_Fill, llvm::MCFragment::FT_LEB, llvm::MCFragment::FT_Nops, llvm::MCFragment::FT_Org, llvm::MCFragment::FT_Relaxable, llvm::MCFragment::FT_SFrame, llvm::MCFragment::FT_SymbolId, llvm::MCNopsFragment::getControlledNopLength(), llvm::MCSymbol::getIndex(), llvm::MCNopsFragment::getLoc(), llvm::MCNopsFragment::getNumBytes(), llvm::MCBoundaryAlignFragment::getSubtargetInfo(), llvm::MCNopsFragment::getSubtargetInfo(), llvm::MCSymbolIdFragment::getSymbol(), llvm::MCFillFragment::getValue(), llvm::MCFillFragment::getValueSize(), I, llvm::little, llvm_unreachable, llvm::Ref, llvm::report_fatal_error(), llvm::reportFatalInternalError(), llvm::raw_ostream::tell(), llvm::raw_ostream::write(), and llvm::support::endian::write().

Referenced by llvm::MCAssembler::writeSectionData().