InlineAsmLowering.cpp File Reference

This file implements the lowering from LLVM IR inline asm to MIR INLINEASM. More...

#include "llvm/CodeGen/GlobalISel/InlineAsmLowering.h"
#include "llvm/CodeGen/GlobalISel/MachineIRBuilder.h"
#include "llvm/CodeGen/MachineOperand.h"
#include "llvm/CodeGen/MachineRegisterInfo.h"
#include "llvm/CodeGen/TargetLowering.h"
#include "llvm/IR/Module.h"

Go to the source code of this file.

Macros
#define	DEBUG_TYPE   "inline-asm-lowering"

Functions
static void	getRegistersForValue (MachineFunction &MF, MachineIRBuilder &MIRBuilder, GISelAsmOperandInfo &OpInfo, GISelAsmOperandInfo &RefOpInfo)
	Assign virtual/physical registers for the specified register operand.
static unsigned	getConstraintGenerality (TargetLowering::ConstraintType CT)
	Return an integer indicating how general CT is.
static void	chooseConstraint (TargetLowering::AsmOperandInfo &OpInfo, const TargetLowering *TLI)
static void	computeConstraintToUse (const TargetLowering *TLI, TargetLowering::AsmOperandInfo &OpInfo)
static unsigned	getNumOpRegs (const MachineInstr &I, unsigned OpIdx)
static bool	buildAnyextOrCopy (Register Dst, Register Src, MachineIRBuilder &MIRBuilder)

Detailed Description

This file implements the lowering from LLVM IR inline asm to MIR INLINEASM.

Definition in file InlineAsmLowering.cpp.

Macro Definition Documentation

DEBUG_TYPE

#define DEBUG_TYPE   "inline-asm-lowering"

Definition at line 21 of file InlineAsmLowering.cpp.

Function Documentation

buildAnyextOrCopy()

static bool buildAnyextOrCopy ( Register  Dst, Register  Src, MachineIRBuilder &  MIRBuilder  )

static

Definition at line 236 of file InlineAsmLowering.cpp.

References llvm::MachineIRBuilder::buildAnyExt(), llvm::MachineIRBuilder::buildCopy(), llvm::dbgs(), llvm::MachineIRBuilder::getMF(), llvm::MachineIRBuilder::getMRI(), llvm::MachineInstrBuilder::getReg(), llvm::TargetSubtargetInfo::getRegisterInfo(), llvm::MachineFunction::getSubtarget(), LLVM_DEBUG, MRI, llvm::LLT::scalar(), and TRI.

Referenced by llvm::InlineAsmLowering::lowerInlineAsm().

chooseConstraint()

static void chooseConstraint ( TargetLowering::AsmOperandInfo &  OpInfo, const TargetLowering *  TLI  )

static

Definition at line 154 of file InlineAsmLowering.cpp.

References assert(), llvm::TargetLowering::C_Immediate, llvm::TargetLowering::C_Memory, llvm::TargetLowering::C_Other, llvm::TargetLowering::C_Register, llvm::TargetLowering::C_RegisterClass, llvm::TargetLowering::C_Unknown, llvm::InlineAsm::ConstraintInfo::Codes, llvm::TargetLowering::AsmOperandInfo::ConstraintCode, llvm::TargetLowering::AsmOperandInfo::ConstraintType, getConstraintGenerality(), llvm::TargetLowering::getConstraintType(), llvm::InlineAsm::ConstraintInfo::hasMatchingInput(), and llvm::InlineAsm::ConstraintInfo::isIndirect.

Referenced by computeConstraintToUse().

computeConstraintToUse()

static void computeConstraintToUse ( const TargetLowering *  TLI, TargetLowering::AsmOperandInfo &  OpInfo  )

static

Definition at line 201 of file InlineAsmLowering.cpp.

References assert(), llvm::TargetLowering::AsmOperandInfo::CallOperandVal, chooseConstraint(), llvm::InlineAsm::ConstraintInfo::Codes, llvm::TargetLowering::AsmOperandInfo::ConstraintCode, llvm::TargetLowering::AsmOperandInfo::ConstraintType, llvm::TargetLowering::AsmOperandInfo::ConstraintVT, llvm::TargetLowering::getConstraintType(), and llvm::TargetLowering::LowerXConstraint().

Referenced by llvm::InlineAsmLowering::lowerInlineAsm().

getConstraintGenerality()

static unsigned getConstraintGenerality ( TargetLowering::ConstraintType  CT )

static

Return an integer indicating how general CT is.

Definition at line 137 of file InlineAsmLowering.cpp.

References llvm::TargetLowering::C_Address, llvm::TargetLowering::C_Immediate, llvm::TargetLowering::C_Memory, llvm::TargetLowering::C_Other, llvm::TargetLowering::C_Register, llvm::TargetLowering::C_RegisterClass, llvm::TargetLowering::C_Unknown, and llvm_unreachable.

Referenced by ChooseConstraint(), and chooseConstraint().

getNumOpRegs()

static unsigned getNumOpRegs ( const MachineInstr &  I, unsigned  OpIdx  )

static

Definition at line 231 of file InlineAsmLowering.cpp.

References llvm::InlineAsm::getNumOperandRegisters(), and I.

Referenced by llvm::InlineAsmLowering::lowerInlineAsm().

getRegistersForValue()

static void getRegistersForValue ( MachineFunction &  MF, MachineIRBuilder &  MIRBuilder, GISelAsmOperandInfo &  OpInfo, GISelAsmOperandInfo &  RefOpInfo  )

static

Assign virtual/physical registers for the specified register operand.

Definition at line 80 of file InlineAsmLowering.cpp.

References assert(), llvm::TargetRegisterClass::begin(), llvm::TargetLowering::C_Memory, llvm::TargetRegisterClass::end(), llvm::Function::getContext(), llvm::MachineFunction::getFunction(), llvm::TargetLoweringBase::getNumRegisters(), llvm::TargetLowering::getRegForInlineAsmConstraint(), llvm::MachineFunction::getRegInfo(), llvm::TargetSubtargetInfo::getRegisterInfo(), llvm::MachineFunction::getSubtarget(), llvm::TargetSubtargetInfo::getTargetLowering(), I, and TRI.

Referenced by llvm::InlineAsmLowering::lowerInlineAsm().