LocalStackSlotAllocation.cpp File Reference

#include "llvm/ADT/SetVector.h"
#include "llvm/ADT/SmallSet.h"
#include "llvm/ADT/SmallVector.h"
#include "llvm/ADT/Statistic.h"
#include "llvm/CodeGen/MachineBasicBlock.h"
#include "llvm/CodeGen/MachineFrameInfo.h"
#include "llvm/CodeGen/MachineFunction.h"
#include "llvm/CodeGen/MachineFunctionPass.h"
#include "llvm/CodeGen/MachineInstr.h"
#include "llvm/CodeGen/MachineOperand.h"
#include "llvm/CodeGen/MachineRegisterInfo.h"
#include "llvm/CodeGen/TargetFrameLowering.h"
#include "llvm/CodeGen/TargetOpcodes.h"
#include "llvm/CodeGen/TargetRegisterInfo.h"
#include "llvm/CodeGen/TargetSubtargetInfo.h"
#include "llvm/Pass.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/raw_ostream.h"
#include <algorithm>
#include <cassert>
#include <cstdint>
#include <tuple>

Include dependency graph for LocalStackSlotAllocation.cpp:

Go to the source code of this file.

Macros
#define	DEBUG_TYPE   "localstackalloc"

Functions
	STATISTIC (NumAllocations, "Number of frame indices allocated into local block")
	STATISTIC (NumBaseRegisters, "Number of virtual frame base registers allocated")
	STATISTIC (NumReplacements, "Number of frame indices references replaced")
	INITIALIZE_PASS (LocalStackSlotPass, DEBUG_TYPE, "Local Stack Slot Allocation", false, false) bool LocalStackSlotPass
static bool	lookupCandidateBaseReg (unsigned BaseReg, int64_t BaseOffset, int64_t FrameSizeAdjust, int64_t LocalFrameOffset, const MachineInstr &MI, const TargetRegisterInfo *TRI)

Macro Definition Documentation

DEBUG_TYPE

#define DEBUG_TYPE   "localstackalloc"

Definition at line 42 of file LocalStackSlotAllocation.cpp.

Function Documentation

INITIALIZE_PASS()

INITIALIZE_PASS	(	LocalStackSlotPass	,
		DEBUG_TYPE	,
		"Local Stack Slot Allocation"	,
		false	,
		false
	)

Definition at line 109 of file LocalStackSlotAllocation.cpp.

References AdjustStackOffset(), assert(), AssignProtectedObjSet(), llvm::assumeAligned(), llvm::SetVector< T, Vector, Set >::begin(), llvm::SmallSet< T, N, C >::count(), llvm::dbgs(), E, llvm::SetVector< T, Vector, Set >::end(), llvm::MachineFunction::getFrameInfo(), llvm::TargetSubtargetInfo::getFrameLowering(), llvm::MachineFrameInfo::getObjectAlignment(), llvm::MachineFrameInfo::getObjectIndexEnd(), llvm::MachineFrameInfo::getObjectSize(), llvm::MachineFrameInfo::getObjectSSPLayout(), llvm::TargetFrameLowering::getStackGrowthDirection(), llvm::MachineFrameInfo::getStackProtectorIndex(), llvm::MachineFunction::getSubtarget(), llvm::MachineFrameInfo::hasStackProtectorIndex(), I, llvm::SetVector< T, Vector, Set >::insert(), llvm::SmallSet< T, N, C >::insert(), llvm::MachineFrameInfo::isDeadObjectIndex(), llvm::MachineFrameInfo::isObjectPreAllocated(), LLVM_DEBUG, llvm_unreachable, llvm::MachineFrameInfo::mapLocalFrameObject(), llvm::max(), llvm::TargetRegisterInfo::requiresVirtualBaseRegisters(), llvm::SmallVectorImpl< T >::resize(), llvm::MachineFrameInfo::setLocalFrameMaxAlign(), llvm::MachineFrameInfo::setLocalFrameSize(), llvm::MachineFrameInfo::setUseLocalStackAllocationBlock(), llvm::MachineFrameInfo::SSPLK_AddrOf, llvm::MachineFrameInfo::SSPLK_LargeArray, llvm::MachineFrameInfo::SSPLK_None, llvm::MachineFrameInfo::SSPLK_SmallArray, llvm::TargetFrameLowering::StackGrowsDown, and TRI.

lookupCandidateBaseReg()

static bool lookupCandidateBaseReg ( unsigned  BaseReg, int64_t  BaseOffset, int64_t  FrameSizeAdjust, int64_t  LocalFrameOffset, const MachineInstr &  MI, const TargetRegisterInfo *  TRI  )

inlinestatic

Definition at line 268 of file LocalStackSlotAllocation.cpp.

References assert(), llvm::dbgs(), llvm::TargetRegisterInfo::getFrameIndexInstrOffset(), llvm::MachineFunction::getFrameInfo(), llvm::TargetSubtargetInfo::getFrameLowering(), llvm::MachineOperand::getIndex(), llvm::MachineFrameInfo::getLocalFrameSize(), getMachineInstr(), llvm::MachineInstr::getMF(), llvm::MachineInstr::getNumOperands(), llvm::MachineInstr::getOperand(), llvm::TargetRegisterInfo::getPointerRegClass(), llvm::TargetSubtargetInfo::getRegisterInfo(), llvm::TargetFrameLowering::getStackGrowthDirection(), llvm::MachineFrameInfo::getStackProtectorIndex(), llvm::MachineFunction::getSubtarget(), llvm::MachineFrameInfo::hasStackProtectorIndex(), llvm::MachineOperand::isFI(), llvm::TargetRegisterInfo::isFrameOffsetLegal(), llvm::MachineFrameInfo::isObjectPreAllocated(), LLVM_DEBUG, llvm::TargetRegisterInfo::materializeFrameBaseRegister(), MI, llvm::TargetRegisterInfo::needsFrameBaseReg(), llvm::SmallVectorTemplateBase< T >::push_back(), llvm::TargetRegisterInfo::resolveFrameIndex(), llvm::SmallVectorBase::size(), llvm::sort(), llvm::TargetFrameLowering::StackGrowsDown, and TRI.

STATISTIC() [1/3]

STATISTIC	(	NumAllocations	,
		"Number of frame indices allocated into local block"
	)

STATISTIC() [2/3]

STATISTIC	(	NumBaseRegisters	,
		"Number of virtual frame base registers allocated"
	)

STATISTIC() [3/3]

STATISTIC	(	NumReplacements	,
		"Number of frame indices references replaced"
	)