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

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 121 of file MachineConstantPool.h.

Constructor & Destructor Documentation

MachineConstantPool()

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

inlineexplicit

The only constructor.

Definition at line 132 of file MachineConstantPool.h.

~MachineConstantPool()

MachineConstantPool::~MachineConstantPool

(

)

Definition at line 943 of file MachineFunction.cpp.

References llvm::detail::DenseSetImpl< ValueT, DenseMap< ValueT, detail::DenseSetEmpty, ValueInfoT, detail::DenseSetPair< ValueT > >, ValueInfoT >::count(), Deleted, E, I, and llvm::detail::DenseSetImpl< ValueT, DenseMap< ValueT, detail::DenseSetEmpty, ValueInfoT, detail::DenseSetPair< ValueT > >, ValueInfoT >::insert().

Member Function Documentation

dump()

LLVM_DUMP_METHOD void MachineConstantPool::dump

(

)

const

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

Definition at line 1059 of file MachineFunction.cpp.

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

getConstantPoolAlignment()

unsigned llvm::MachineConstantPool::getConstantPoolAlignment ( ) const

inline

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

Definition at line 138 of file MachineConstantPool.h.

References C.

getConstantPoolIndex() [1/2]

unsigned MachineConstantPool::getConstantPoolIndex	(	const Constant *	C,
		unsigned	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 1005 of file MachineFunction.cpp.

References assert(), and CanShareConstantPoolEntry().

Referenced by addExclusiveRegPair(), llvm::ARMFrameLowering::adjustForSegmentedStacks(), canTurnIntoCOPY(), duplicateCPV(), llvm::ARMBaseRegisterInfo::emitLoadConstPool(), emitPostSt(), emitThumb1LoadConstPool(), emitThumb2LoadConstPool(), llvm::X86InstrInfo::foldMemoryOperandImpl(), llvm::MIRParserImpl::initializeConstantPool(), llvm::XCoreInstrInfo::loadImmediate(), and llvm::ARMTargetLowering::ReplaceNodeResults().

getConstantPoolIndex() [2/2]

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

Definition at line 1025 of file MachineFunction.cpp.

References assert(), and llvm::MachineConstantPoolValue::getExistingMachineCPValue().

getConstants()

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

inline

Definition at line 150 of file MachineConstantPool.h.

References llvm::dump(), and llvm::MachineConstantPoolValue::print().

Referenced by llvm::MIRPrinter::convert(), duplicateCPV(), llvm::WebAssemblyAsmPrinter::EmitConstantPool(), llvm::AsmPrinter::EmitConstantPool(), llvm::ARMAsmPrinter::EmitInstruction(), llvm::MipsAsmPrinter::EmitInstruction(), llvm::ARMAsmPrinter::EmitJumpTableTBInst(), getConstantFromPool(), llvm::AsmPrinter::GetCPISymbol(), llvm::SystemZConstantPoolValue::getExistingMachineCPValue(), llvm::ARMConstantPoolValue::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 148 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 1043 of file MachineFunction.cpp.

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

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