llvm::MachineConstantPool Class Reference

The MachineConstantPool class keeps track of constants referenced by a function which must be spilled to memory. More...

#include "llvm/CodeGen/MachineConstantPool.h"

Public Member Functions
	MachineConstantPool (const DataLayout &DL)
	The only constructor.
LLVM_ABI	~MachineConstantPool ()
Align	getConstantPoolAlign () const
	Return the alignment required by the whole constant pool, of which the first element must be aligned.
LLVM_ABI unsigned	getConstantPoolIndex (const Constant *C, Align Alignment)
	getConstantPoolIndex - Create a new entry in the constant pool or return an existing one.
LLVM_ABI unsigned	getConstantPoolIndex (MachineConstantPoolValue *V, Align Alignment)
bool	isEmpty () const
	isEmpty - Return true if this constant pool contains no constants.
const std::vector< MachineConstantPoolEntry > &	getConstants () const
LLVM_ABI void	print (raw_ostream &OS) const
	print - Used by the MachineFunction printer to print information about constant pool objects.
LLVM_ABI void	dump () const
	dump - Call print(cerr) to be called from the debugger.

Detailed Description

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. The machine constant pool.

Definition at line 117 of file MachineConstantPool.h.

Constructor & Destructor Documentation

MachineConstantPool()

llvm::MachineConstantPool::MachineConstantPool ( const DataLayout & DL )

inlineexplicit

The only constructor.

Definition at line 128 of file MachineConstantPool.h.

~MachineConstantPool()

MachineConstantPool::~MachineConstantPool

(

)

Definition at line 1528 of file MachineFunction.cpp.

References llvm::CallingConv::C, and Deleted.

Member Function Documentation

dump()

LLVM_DUMP_METHOD void MachineConstantPool::dump

(

)

const

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

Definition at line 1660 of file MachineFunction.cpp.

References llvm::dbgs(), LLVM_DUMP_METHOD, and print().

getConstantPoolAlign()

Align llvm::MachineConstantPool::getConstantPoolAlign ( ) const

inline

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

Definition at line 134 of file MachineConstantPool.h.

getConstantPoolIndex() [1/2]

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

getConstantPoolIndex - Create a new entry in the constant pool or return an existing one.

Create a new entry in the constant pool or return an existing one.

User must specify the minimum required alignment for the object.

User must specify the log2 of the minimum required alignment for the object.

Definition at line 1597 of file MachineFunction.cpp.

References llvm::CallingConv::C, CanShareConstantPoolEntry(), and llvm::getAlign().

Referenced by llvm::ARMFrameLowering::adjustForSegmentedStacks(), duplicateCPV(), emitLoadFromConstantPool(), llvm::PPCInstrInfo::finalizeInsInstrs(), llvm::X86InstrInfo::foldMemoryOperandImpl(), and llvm::XtensaInstrInfo::loadImmediate().

getConstantPoolIndex() [2/2]

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

Definition at line 1616 of file MachineFunction.cpp.

getConstants()

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

inline

Definition at line 146 of file MachineConstantPool.h.

Referenced by duplicateCPV(), llvm::AsmPrinter::emitConstantPool(), llvm::XtensaAsmPrinter::emitConstantPool(), EstimateFunctionSizeInBytes(), EstimateFunctionSizeInBytes(), llvm::PPCInstrInfo::getConstantFromConstantPool(), llvm::ARMConstantPoolConstant::getExistingMachineCPValue(), llvm::RISCVConstantPoolValue::getExistingMachineCPValue(), llvm::SystemZConstantPoolValue::getExistingMachineCPValue(), llvm::ARMConstantPoolValue::getExistingMachineCPValueImpl(), llvm::CSKYConstantPoolValue::getExistingMachineCPValueImpl(), llvm::XtensaConstantPoolValue::getExistingMachineCPValueImpl(), and llvm::ARMBaseInstrInfo::produceSameValue().

isEmpty()

bool llvm::MachineConstantPool::isEmpty ( ) const

inline

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

Definition at line 144 of file MachineConstantPool.h.

print()

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 1633 of file MachineFunction.cpp.

Referenced by dump().

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

• include/llvm/CodeGen/MachineConstantPool.h
• lib/CodeGen/MachineFunction.cpp