X86RegisterInfo.cpp File Reference

#include "X86.h"
#include "X86RegisterInfo.h"
#include "X86InstrBuilder.h"
#include "X86MachineFunctionInfo.h"
#include "X86Subtarget.h"
#include "X86TargetMachine.h"
#include "llvm/Constants.h"
#include "llvm/Function.h"
#include "llvm/Type.h"
#include "llvm/CodeGen/ValueTypes.h"
#include "llvm/CodeGen/MachineInstrBuilder.h"
#include "llvm/CodeGen/MachineFunction.h"
#include "llvm/CodeGen/MachineFunctionPass.h"
#include "llvm/CodeGen/MachineFrameInfo.h"
#include "llvm/CodeGen/MachineLocation.h"
#include "llvm/CodeGen/MachineModuleInfo.h"
#include "llvm/CodeGen/MachineRegisterInfo.h"
#include "llvm/Target/TargetAsmInfo.h"
#include "llvm/Target/TargetFrameInfo.h"
#include "llvm/Target/TargetInstrInfo.h"
#include "llvm/Target/TargetMachine.h"
#include "llvm/Target/TargetOptions.h"
#include "llvm/ADT/BitVector.h"
#include "llvm/ADT/STLExtras.h"
#include "llvm/Support/Compiler.h"
#include "X86GenRegisterInfo.inc"

Include dependency graph for X86RegisterInfo.cpp:

Go to the source code of this file.

Namespaces
namespace	llvm
Functions
static unsigned	calculateMaxStackAlignment (const MachineFrameInfo *FFI)
static void	emitSPUpdate (MachineBasicBlock &MBB, MachineBasicBlock::iterator &MBBI, unsigned StackPtr, int64_t NumBytes, bool Is64Bit, const TargetInstrInfo &TII)
static void	mergeSPUpdatesUp (MachineBasicBlock &MBB, MachineBasicBlock::iterator &MBBI, unsigned StackPtr, uint64_t *NumBytes=NULL)
static void	mergeSPUpdatesDown (MachineBasicBlock &MBB, MachineBasicBlock::iterator &MBBI, unsigned StackPtr, uint64_t *NumBytes=NULL)
static int	mergeSPUpdates (MachineBasicBlock &MBB, MachineBasicBlock::iterator &MBBI, unsigned StackPtr, bool doMergeWithPrevious)
unsigned	llvm::getX86SubSuperRegister (unsigned Reg, MVT VT, bool High)
FunctionPass *	llvm::createX86MaxStackAlignmentCalculatorPass ()

---

Function Documentation

static unsigned calculateMaxStackAlignment

(

const MachineFrameInfo *

FFI

)

[static]

Definition at line 297 of file X86RegisterInfo.cpp.

References Align, llvm::MachineFrameInfo::getObjectAlignment(), llvm::MachineFrameInfo::getObjectIndexBegin(), llvm::MachineFrameInfo::getObjectIndexEnd(), and llvm::MachineFrameInfo::isDeadObjectIndex().

Referenced by llvm::X86RegisterInfo::processFunctionBeforeCalleeSavedScan().

static void emitSPUpdate	(	MachineBasicBlock &	MBB,
		MachineBasicBlock::iterator &	MBBI,
		unsigned	StackPtr,
		int64_t	NumBytes,
		bool	Is64Bit,
		const TargetInstrInfo &	TII
	)			[static]

emitSPUpdate - Emit a series of instructions to increment / decrement the stack pointer by a constant value.

Definition at line 521 of file X86RegisterInfo.cpp.

References llvm::MachineInstrBuilder::addImm(), llvm::BuildMI(), llvm::TargetInstrInfo::get(), llvm::MachineInstr::getOperand(), MI, Offset, and llvm::MachineOperand::setIsDead().

static int mergeSPUpdates	(	MachineBasicBlock &	MBB,
		MachineBasicBlock::iterator &	MBBI,
		unsigned	StackPtr,
		bool	doMergeWithPrevious
	)			[static]

mergeSPUpdates - Checks the instruction before/after the passed instruction. If it is an ADD/SUB instruction it is deleted argument and the stack adjustment is returned as a positive value for ADD and a negative for SUB.

Definition at line 602 of file X86RegisterInfo.cpp.

References llvm::MachineBasicBlock::begin(), llvm::MachineBasicBlock::end(), llvm::MachineBasicBlock::erase(), llvm::next(), Offset, PI, and llvm::prior().

Referenced by llvm::X86RegisterInfo::emitEpilogue(), and llvm::X86RegisterInfo::emitPrologue().

static void mergeSPUpdatesDown	(	MachineBasicBlock &	MBB,
		MachineBasicBlock::iterator &	MBBI,
		unsigned	StackPtr,
		uint64_t *	NumBytes = NULL
	)			[static]

Definition at line 570 of file X86RegisterInfo.cpp.

References llvm::MachineBasicBlock::end(), llvm::MachineBasicBlock::erase(), and llvm::next().

Referenced by llvm::X86RegisterInfo::emitPrologue().

static void mergeSPUpdatesUp	(	MachineBasicBlock &	MBB,
		MachineBasicBlock::iterator &	MBBI,
		unsigned	StackPtr,
		uint64_t *	NumBytes = NULL
	)			[static]

Definition at line 547 of file X86RegisterInfo.cpp.

References llvm::MachineBasicBlock::begin(), llvm::MachineBasicBlock::erase(), PI, and llvm::prior().

Referenced by llvm::X86RegisterInfo::emitEpilogue().

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Variable Documentation

char ID [static]

Definition at line 1215 of file X86RegisterInfo.cpp.