llvm::AllocationOrder Class Reference

#include "CodeGen/AllocationOrder.h"

Classes
class	Iterator
	Forward iterator for an AllocationOrder. More...

Public Member Functions
	AllocationOrder (SmallVector< MCPhysReg, 16 > &&HintsAndCustomOrder, int NumHints, ArrayRef< MCPhysReg > Order, bool HardHints)
	Create an AllocationOrder from HintsAndCustomOrder that contains NumHints Hints optionally followed by a custom order.
	AllocationOrder (SmallVector< MCPhysReg, 16 > &&Hints, ArrayRef< MCPhysReg > Order, bool HardHints)
	Create an AllocationOrder given the Hints, Order, and HardHints values.
Iterator	begin () const
Iterator	end () const
Iterator	getOrderLimitEnd (unsigned OrderLimit) const
ArrayRef< MCPhysReg >	getOrder () const
	Get the allocation order without reordered hints.
bool	hasCustomOrder () const
	Return true if a custom order replaced the RegisterClassInfo order.
bool	isHint (Register Reg) const
	Return true if Reg is a preferred physical register.

Static Public Member Functions
static AllocationOrder	create (Register VirtReg, const VirtRegMap &VRM, const RegisterClassInfo &RegClassInfo, const LiveRegMatrix *Matrix)
	Create a new AllocationOrder for VirtReg.

Detailed Description

Definition at line 31 of file AllocationOrder.h.

Constructor & Destructor Documentation

AllocationOrder() [1/2]

llvm::AllocationOrder::AllocationOrder ( SmallVector< MCPhysReg, 16 > && HintsAndCustomOrder, int NumHints, ArrayRef< MCPhysReg > Order, bool HardHints )

inline

Create an AllocationOrder from HintsAndCustomOrder that contains NumHints Hints optionally followed by a custom order.

When that custom order is present it becomes the allocation order otherwise Order is used as-is.

Definition at line 100 of file AllocationOrder.h.

References llvm::move(), and llvm::size().

Referenced by AllocationOrder(), create(), and llvm::AllocationOrder::Iterator::Iterator().

AllocationOrder() [2/2]

llvm::AllocationOrder::AllocationOrder ( SmallVector< MCPhysReg, 16 > && Hints, ArrayRef< MCPhysReg > Order, bool HardHints )

inline

Create an AllocationOrder given the Hints, Order, and HardHints values.

Use the create method above - the ctor is for unittests.

Definition at line 111 of file AllocationOrder.h.

References AllocationOrder(), llvm::move(), and llvm::size().

Member Function Documentation

begin()

Iterator llvm::AllocationOrder::begin ( ) const

inline

Definition at line 116 of file AllocationOrder.h.

create()

AllocationOrder AllocationOrder::create ( Register VirtReg, const VirtRegMap & VRM, const RegisterClassInfo & RegClassInfo, const LiveRegMatrix * Matrix )

static

Create a new AllocationOrder for VirtReg.

Parameters

VirtReg	Virtual register to allocate for.
VRM	Virtual register map for function.
RegClassInfo	Information about reserved and allocatable registers.

Definition at line 49 of file AllocationOrder.cpp.

References llvm::all_of(), AllocationOrder(), assert(), llvm::dbgs(), getBitVecRegAntiHints(), llvm::VirtRegMap::getMachineFunction(), llvm::RegisterClassInfo::getOrder(), llvm::VirtRegMap::getPhys(), llvm::MachineRegisterInfo::getRegAllocationAntiHints(), llvm::MachineRegisterInfo::getRegClass(), llvm::MachineFunction::getRegInfo(), llvm::VirtRegMap::getTargetRegInfo(), llvm::VirtRegMap::hasPhys(), LLVM_DEBUG, Matrix, llvm::printReg(), and TRI.

Referenced by llvm::RegAllocEvictionAdvisor::canReassign(), and llvm::RABasic::selectOrSplit().

end()

Iterator llvm::AllocationOrder::end ( ) const

inline

Definition at line 118 of file AllocationOrder.h.

Referenced by getOrderLimitEnd().

getOrder()

ArrayRef< MCPhysReg > llvm::AllocationOrder::getOrder ( ) const

inline

Get the allocation order without reordered hints.

Definition at line 130 of file AllocationOrder.h.

Referenced by llvm::RegAllocEvictionAdvisor::getOrderLimit().

getOrderLimitEnd()

Iterator llvm::AllocationOrder::getOrderLimitEnd ( unsigned OrderLimit ) const

inline

Definition at line 120 of file AllocationOrder.h.

References assert(), and end().

hasCustomOrder()

bool llvm::AllocationOrder::hasCustomOrder ( ) const

inline

Return true if a custom order replaced the RegisterClassInfo order.

Definition at line 133 of file AllocationOrder.h.

Referenced by llvm::RegAllocEvictionAdvisor::getOrderLimit().

isHint()

bool llvm::AllocationOrder::isHint ( Register Reg ) const

inline

Return true if Reg is a preferred physical register.

Definition at line 138 of file AllocationOrder.h.

References assert(), llvm::is_contained(), and Reg.

---

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

• lib/CodeGen/AllocationOrder.h
• lib/CodeGen/AllocationOrder.cpp