#include "PPCFrameLowering.h"
#include "PPCInstrBuilder.h"
#include "PPCInstrInfo.h"
#include "PPCMachineFunctionInfo.h"
#include "PPCSubtarget.h"
#include "llvm/CodeGen/MachineFrameInfo.h"
#include "llvm/CodeGen/MachineFunction.h"
#include "llvm/CodeGen/MachineInstrBuilder.h"
#include "llvm/CodeGen/MachineModuleInfo.h"
#include "llvm/CodeGen/MachineRegisterInfo.h"
#include "llvm/CodeGen/RegisterScavenging.h"
#include "llvm/IR/Function.h"
#include "llvm/Target/TargetOptions.h"

Include dependency graph for PPCFrameLowering.cpp:

Functions
static void	RemoveVRSaveCode (MachineInstr *MI)
static void	HandleVRSaveUpdate (MachineInstr *MI, const TargetInstrInfo &TII)
static bool	spillsCR (const MachineFunction &MF)
static bool	spillsVRSAVE (const MachineFunction &MF)
static bool	hasSpills (const MachineFunction &MF)
static bool	hasNonRISpills (const MachineFunction &MF)
static bool	MustSaveLR (const MachineFunction &MF, unsigned LR)
static void	restoreCRs (bool isPPC64, bool is31, bool CR2Spilled, bool CR3Spilled, bool CR4Spilled, MachineBasicBlock &MBB, MachineBasicBlock::iterator MI, const std::vector< CalleeSavedInfo > &CSI, unsigned CSIIndex)
Variables
static const uint16_t	VRRegNo []

Function Documentation

static void HandleVRSaveUpdate	(	MachineInstr *	MI,
		const TargetInstrInfo &	TII
	)		`[static]`

Definition at line 255 of file PPCFrameLowering.cpp.

References llvm::MachineInstrBuilder::addImm(), llvm::MachineBasicBlock::back(), llvm::MachineFunction::begin(), llvm::BuildMI(), llvm::MachineBasicBlock::empty(), llvm::MachineFunction::end(), llvm::MachineInstr::eraseFromParent(), llvm::MCInstrInfo::get(), llvm::MachineInstr::getDebugLoc(), llvm::MCRegisterInfo::getEncodingValue(), llvm::MachineInstr::getNumOperands(), llvm::MachineInstr::getOperand(), llvm::MachineInstr::getParent(), llvm::MachineBasicBlock::getParent(), llvm::MachineOperand::getReg(), llvm::MachineFunction::getRegInfo(), llvm::TargetSubtargetInfo::getRegisterInfo(), llvm::MachineFunction::getSubtarget(), I, llvm::MachineRegisterInfo::isPhysRegUsed(), llvm::MachineOperand::isReg(), llvm::MachineInstr::isReturn(), llvm::RegState::Kill, llvm::MachineRegisterInfo::livein_begin(), llvm::MachineRegisterInfo::livein_end(), llvm::AArch64CC::MI, RemoveVRSaveCode(), llvm::MipsISD::Ret, and VRRegNo.

Referenced by llvm::PPCFrameLowering::emitPrologue().

static bool hasNonRISpills ( const MachineFunction & MF ) [static]

Definition at line 353 of file PPCFrameLowering.cpp.

References llvm::MachineFunction::getInfo(), and llvm::PPCFunctionInfo::hasNonRISpills().

Referenced by llvm::PPCFrameLowering::addScavengingSpillSlot().

static bool hasSpills ( const MachineFunction & MF ) [static]

Definition at line 348 of file PPCFrameLowering.cpp.

References llvm::MachineFunction::getInfo(), and llvm::PPCFunctionInfo::hasSpills().

Referenced by llvm::PPCFrameLowering::addScavengingSpillSlot().

static bool MustSaveLR	(	const MachineFunction &	MF,
		unsigned	LR
	)		`[static]`

MustSaveLR - Return true if this function requires that we save the LR register onto the stack in the prolog and restore it in the epilog of the function.

Definition at line 1057 of file PPCFrameLowering.cpp.

References llvm::MachineRegisterInfo::def_begin(), llvm::MachineRegisterInfo::def_end(), llvm::MachineFunction::getInfo(), llvm::MachineFunction::getRegInfo(), and llvm::PPCFunctionInfo::isLRStoreRequired().

Referenced by llvm::PPCFrameLowering::emitEpilogue(), llvm::PPCFrameLowering::emitPrologue(), and llvm::PPCFrameLowering::processFunctionBeforeCalleeSavedScan().

static void RemoveVRSaveCode ( MachineInstr * MI ) [static]

RemoveVRSaveCode - We have found that this function does not need any code to manipulate the VRSAVE register, even though it uses vector registers. This can happen when the only registers used are known to be live in or out of the function. Remove all of the VRSAVE related code from the function. FIXME: The removal of the code results in a compile failure at -O0 when the function contains a function call, as the GPR containing original VRSAVE contents is spilled and reloaded around the call. Without the prolog code, the spill instruction refers to an undefined register. This code needs to account for all uses of that GPR.

Definition at line 209 of file PPCFrameLowering.cpp.

References llvm::MachineBasicBlock::begin(), llvm::MachineFunction::begin(), llvm::MachineBasicBlock::end(), llvm::MachineFunction::end(), llvm::MachineInstr::eraseFromParent(), llvm::MachineInstr::getParent(), llvm::MachineBasicBlock::getParent(), I, and llvm::AArch64CC::MI.

Referenced by HandleVRSaveUpdate().

static void restoreCRs	(	bool	isPPC64,
		bool	is31,
		bool	CR2Spilled,
		bool	CR3Spilled,
		bool	CR4Spilled,
		MachineBasicBlock &	MBB,
		MachineBasicBlock::iterator	MI,
		const std::vector< CalleeSavedInfo > &	CSI,
		unsigned	CSIIndex
	)		`[static]`

Definition at line 1442 of file PPCFrameLowering.cpp.

References llvm::addFrameReference(), llvm::BuildMI(), llvm::TargetSubtargetInfo::getInstrInfo(), llvm::getKillRegState(), llvm::MachineBasicBlock::getParent(), llvm::MachineFunction::getSubtarget(), llvm::MachineBasicBlock::insert(), and TII.

Referenced by llvm::PPCFrameLowering::restoreCalleeSavedRegisters().

static bool spillsCR ( const MachineFunction & MF ) [static]

Definition at line 338 of file PPCFrameLowering.cpp.

References llvm::MachineFunction::getInfo(), and llvm::PPCFunctionInfo::isCRSpilled().

Referenced by llvm::PPCFrameLowering::addScavengingSpillSlot(), and llvm::PPCFrameLowering::processFunctionBeforeFrameFinalized().

static bool spillsVRSAVE ( const MachineFunction & MF ) [static]

Definition at line 343 of file PPCFrameLowering.cpp.

References llvm::MachineFunction::getInfo(), and llvm::PPCFunctionInfo::isVRSAVESpilled().

Referenced by llvm::PPCFrameLowering::addScavengingSpillSlot().

Variable Documentation

const uint16_t VRRegNo[] [static]

Initial value:

 {
 PPC::V0 , PPC::V1 , PPC::V2 , PPC::V3 , PPC::V4 , PPC::V5 , PPC::V6 , PPC::V7 ,
 PPC::V8 , PPC::V9 , PPC::V10, PPC::V11, PPC::V12, PPC::V13, PPC::V14, PPC::V15,
 PPC::V16, PPC::V17, PPC::V18, PPC::V19, PPC::V20, PPC::V21, PPC::V22, PPC::V23,
 PPC::V24, PPC::V25, PPC::V26, PPC::V27, PPC::V28, PPC::V29, PPC::V30, PPC::V31
}

VRRegNo - Map from a numbered VR register to its enum value.

Definition at line 32 of file PPCFrameLowering.cpp.

Referenced by HandleVRSaveUpdate().

Functions

Variables

Function Documentation

Variable Documentation