llvm::MachineConstantPool Class Reference

The machine constant pool. More...

#include <MachineConstantPool.h>

Collaboration diagram for llvm::MachineConstantPool:

[legend]

List of all members.

Public Member Functions
	MachineConstantPool (const TargetData *td)
	The only constructor.
	~MachineConstantPool ()
unsigned	getConstantPoolAlignment () const
unsigned	getConstantPoolIndex (Constant *C, unsigned Alignment)
unsigned	getConstantPoolIndex (MachineConstantPoolValue *V, unsigned Alignment)
bool	isEmpty () const
	isEmpty - Return true if this constant pool contains no constants.
const std::vector < MachineConstantPoolEntry > &	getConstants () const
void	print (raw_ostream &OS) const
void	dump () const
	dump - Call print(cerr) to be called from the debugger.

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Detailed Description

The machine constant pool.

The MachineConstantPool class keeps track of constants referenced by a function which must be spilled to memory. This is used for constants which are unable to be used directly as operands to instructions, which typically include floating point and large integer constants.

Instructions reference the address of these constant pool constants through the use of MO_ConstantPoolIndex values. When emitting assembly or machine code, these virtual address references are converted to refer to the address of the function constant pool values.

Definition at line 109 of file MachineConstantPool.h.

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Constructor & Destructor Documentation

llvm::MachineConstantPool::MachineConstantPool

(

const TargetData *

td

)

[inline, explicit]

The only constructor.

Definition at line 115 of file MachineConstantPool.h.

MachineConstantPool::~MachineConstantPool

(

)

Definition at line 498 of file MachineFunction.cpp.

References Val.

Referenced by llvm::MachineFunction::~MachineFunction().

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Member Function Documentation

unsigned llvm::MachineConstantPool::getConstantPoolAlignment

(

)

const [inline]

getConstantPoolAlignment - Return the log2 of the alignment required by the whole constant pool, of which the first element must be aligned.

Definition at line 121 of file MachineConstantPool.h.

Referenced by llvm::AsmPrinter::EmitConstantPool().

unsigned MachineConstantPool::getConstantPoolIndex	(	Constant *	C,
		unsigned	Alignment
	)

getConstantPoolIndex - Create a new entry in the constant pool or return an existing one. User must specify the log2 of the minimum required alignment for the object.

getConstantPoolIndex - Create a new entry in the constant pool or return an existing one. User must specify the log2 of the minimum required alignment for the object.

Definition at line 508 of file MachineFunction.cpp.

References llvm::TargetData::getTypePaddedSize(), Offset, TD, and Val.

Referenced by llvm::ARMRegisterInfo::emitLoadConstPool(), and llvm::X86InstrInfo::foldMemoryOperandImpl().

unsigned MachineConstantPool::getConstantPoolIndex	(	MachineConstantPoolValue *	V,
		unsigned	Alignment
	)

Definition at line 532 of file MachineFunction.cpp.

References llvm::MachineConstantPoolValue::getExistingMachineCPValue(), llvm::TargetData::getTypePaddedSize(), Idx, Offset, and TD.

bool llvm::MachineConstantPool::isEmpty

(

)

const [inline]

isEmpty - Return true if this constant pool contains no constants.

Definition at line 130 of file MachineConstantPool.h.

const std::vector<MachineConstantPoolEntry>& llvm::MachineConstantPool::getConstants

(

)

const [inline]

Definition at line 132 of file MachineConstantPool.h.

Referenced by llvm::MachOCodeEmitter::emitConstantPool(), llvm::AsmPrinter::EmitConstantPool(), GetConstantPoolSizeInBytes(), and llvm::ARMConstantPoolValue::getExistingMachineCPValue().

void MachineConstantPool::print

(

raw_ostream &

OS

)

const

print - Used by the MachineFunction printer to print information about constant pool objects. Implemented in MachineFunction.cpp

Definition at line 556 of file MachineFunction.cpp.

References llvm::Value::print(), and Val.

Referenced by dump(), and llvm::MachineFunction::print().

void MachineConstantPool::dump

(

)

const

dump - Call print(cerr) to be called from the debugger.

Definition at line 568 of file MachineFunction.cpp.

References llvm::errs(), llvm::raw_ostream::flush(), and print().

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The documentation for this class was generated from the following files:

• MachineConstantPool.h
• MachineFunction.cpp