LLVM: lib/Target/X86/X86WinAllocaExpander.cpp File Reference

LLVM 8.0.1

#include "X86.h"
#include "X86InstrBuilder.h"
#include "X86InstrInfo.h"
#include "X86MachineFunctionInfo.h"
#include "X86Subtarget.h"
#include "llvm/ADT/PostOrderIterator.h"
#include "llvm/CodeGen/MachineFunctionPass.h"
#include "llvm/CodeGen/MachineInstrBuilder.h"
#include "llvm/CodeGen/MachineRegisterInfo.h"
#include "llvm/CodeGen/Passes.h"
#include "llvm/CodeGen/TargetInstrInfo.h"
#include "llvm/IR/Function.h"
#include "llvm/Support/raw_ostream.h"

Include dependency graph for X86WinAllocaExpander.cpp:

Go to the source code of this file.

Functions
static int64_t	getWinAllocaAmount (MachineInstr MI, MachineRegisterInfo MRI)
	Return the allocation amount for a WinAlloca instruction, or -1 if unknown. More...

static bool	isPushPop (const MachineInstr &MI)

static unsigned	getSubOpcode (bool Is64Bit, int64_t Amount)

Function Documentation

◆ getSubOpcode()

static unsigned getSubOpcode	(	bool	Is64Bit,
		int64_t	Amount
	)

static

Definition at line 196 of file X86WinAllocaExpander.cpp.

References llvm::MachineInstrBuilder::addImm(), llvm::MachineInstrBuilder::addReg(), assert(), llvm::BuildMI(), llvm::N86::EAX, llvm::MachineInstr::eraseFromParent(), llvm::StringRef::getAsInteger(), llvm::MachineInstr::getDebugLoc(), llvm::Function::getFnAttribute(), llvm::MachineFunction::getFunction(), llvm::MachineFunction::getInfo(), llvm::MachineInstr::getOperand(), llvm::MachineBasicBlock::getParent(), llvm::MachineInstr::getParent(), llvm::MachineOperand::getReg(), llvm::MachineFunction::getRegInfo(), llvm::MachineFunction::getSubtarget(), llvm::Attribute::getValueAsString(), getWinAllocaAmount(), llvm::Function::hasFnAttribute(), llvm::X86MachineFunctionInfo::hasWinAlloca(), I, INT64_MAX, llvm::MachineInstr::isCopy(), llvm::isInt< 8 >(), llvm::MachineOperand::isReg(), LLVM_FALLTHROUGH, Lowering, MI, MRI, P, TII, TRI, and llvm::RegState::Undef.

◆ getWinAllocaAmount()

static int64_t getWinAllocaAmount	(	MachineInstr *	MI,
		MachineRegisterInfo *	MRI
	)

static

Return the allocation amount for a WinAlloca instruction, or -1 if unknown.

Definition at line 80 of file X86WinAllocaExpander.cpp.

References assert(), llvm::tgtok::Def, llvm::MachineOperand::getImm(), llvm::MachineInstr::getOpcode(), llvm::MachineInstr::getOperand(), llvm::MachineOperand::getReg(), llvm::MachineRegisterInfo::getUniqueVRegDef(), llvm::MachineInstr::isCopy(), llvm::MachineOperand::isImm(), and llvm::MachineOperand::isReg().

Referenced by getSubOpcode(), and isPushPop().

◆ isPushPop()

static bool isPushPop ( const MachineInstr & MI )

static

Definition at line 115 of file X86WinAllocaExpander.cpp.

References llvm::MachineInstr::getOpcode(), getWinAllocaAmount(), Lowering, llvm::max(), MI, MRI, llvm::MachineBasicBlock::predecessors(), RPO, and TRI.