LLVM  14.0.0git
Macros | Functions | Variables
ARMISelDAGToDAG.cpp File Reference
#include "ARM.h"
#include "ARMBaseInstrInfo.h"
#include "ARMTargetMachine.h"
#include "MCTargetDesc/ARMAddressingModes.h"
#include "Utils/ARMBaseInfo.h"
#include "llvm/ADT/APSInt.h"
#include "llvm/ADT/StringSwitch.h"
#include "llvm/CodeGen/MachineFrameInfo.h"
#include "llvm/CodeGen/MachineFunction.h"
#include "llvm/CodeGen/MachineInstrBuilder.h"
#include "llvm/CodeGen/MachineRegisterInfo.h"
#include "llvm/CodeGen/SelectionDAG.h"
#include "llvm/CodeGen/SelectionDAGISel.h"
#include "llvm/CodeGen/TargetLowering.h"
#include "llvm/IR/CallingConv.h"
#include "llvm/IR/Constants.h"
#include "llvm/IR/DerivedTypes.h"
#include "llvm/IR/Function.h"
#include "llvm/IR/Intrinsics.h"
#include "llvm/IR/IntrinsicsARM.h"
#include "llvm/IR/LLVMContext.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Target/TargetOptions.h"
#include "ARMGenDAGISel.inc"
Include dependency graph for ARMISelDAGToDAG.cpp:

Go to the source code of this file.

Macros

#define DEBUG_TYPE   "arm-isel"
 

Functions

static bool isInt32Immediate (SDNode *N, unsigned &Imm)
 isInt32Immediate - This method tests to see if the node is a 32-bit constant operand. More...
 
static bool isInt32Immediate (SDValue N, unsigned &Imm)
 
static bool isOpcWithIntImmediate (SDNode *N, unsigned Opc, unsigned &Imm)
 
static bool isScaledConstantInRange (SDValue Node, int Scale, int RangeMin, int RangeMax, int &ScaledConstant)
 Check whether a particular node is a constant value representable as (N * Scale) where (N in [RangeMin, RangeMax). More...
 
static bool shouldUseZeroOffsetLdSt (SDValue N)
 
static SDValue getAL (SelectionDAG *CurDAG, const SDLoc &dl)
 getAL - Returns a ARMCC::AL immediate node. More...
 
static bool isVLDfixed (unsigned Opc)
 
static bool isVSTfixed (unsigned Opc)
 
static unsigned getVLDSTRegisterUpdateOpcode (unsigned Opc)
 
static bool isPerfectIncrement (SDValue Inc, EVT VecTy, unsigned NumVecs)
 Returns true if the given increment is a Constant known to be equal to the access size performed by a NEON load/store. More...
 
static bool SDValueToConstBool (SDValue SDVal)
 
static Optional< std::pair< unsigned, unsigned > > getContiguousRangeOfSetBits (const APInt &A)
 
static void getIntOperandsFromRegisterString (StringRef RegString, SelectionDAG *CurDAG, const SDLoc &DL, std::vector< SDValue > &Ops)
 
static int getBankedRegisterMask (StringRef RegString)
 
static int getMClassFlagsMask (StringRef Flags)
 
static int getMClassRegisterMask (StringRef Reg, const ARMSubtarget *Subtarget)
 
static int getARClassRegisterMask (StringRef Reg, StringRef Flags)
 

Variables

static cl::opt< bool > DisableShifterOp ("disable-shifter-op", cl::Hidden, cl::desc("Disable isel of shifter-op"), cl::init(false))
 

Macro Definition Documentation

◆ DEBUG_TYPE

#define DEBUG_TYPE   "arm-isel"

Definition at line 41 of file ARMISelDAGToDAG.cpp.

Function Documentation

◆ getAL()

static SDValue getAL ( SelectionDAG CurDAG,
const SDLoc dl 
)
inlinestatic

getAL - Returns a ARMCC::AL immediate node.

Definition at line 1571 of file ARMISelDAGToDAG.cpp.

References llvm::ARMCC::AL, llvm::SelectionDAG::getTargetConstant(), and llvm::MVT::i32.

◆ getARClassRegisterMask()

static int getARClassRegisterMask ( StringRef  Reg,
StringRef  Flags 
)
static

◆ getBankedRegisterMask()

static int getBankedRegisterMask ( StringRef  RegString)
inlinestatic

Definition at line 5405 of file ARMISelDAGToDAG.cpp.

References llvm::StringRef::lower().

◆ getContiguousRangeOfSetBits()

static Optional<std::pair<unsigned, unsigned> > getContiguousRangeOfSetBits ( const APInt A)
static

Definition at line 3525 of file ARMISelDAGToDAG.cpp.

◆ getIntOperandsFromRegisterString()

static void getIntOperandsFromRegisterString ( StringRef  RegString,
SelectionDAG CurDAG,
const SDLoc DL,
std::vector< SDValue > &  Ops 
)
static

◆ getMClassFlagsMask()

static int getMClassFlagsMask ( StringRef  Flags)
inlinestatic

◆ getMClassRegisterMask()

static int getMClassRegisterMask ( StringRef  Reg,
const ARMSubtarget Subtarget 
)
static

Definition at line 5428 of file ARMISelDAGToDAG.cpp.

References Reg.

◆ getVLDSTRegisterUpdateOpcode()

static unsigned getVLDSTRegisterUpdateOpcode ( unsigned  Opc)
static

Definition at line 2018 of file ARMISelDAGToDAG.cpp.

References assert(), isVLDfixed(), and isVSTfixed().

◆ isInt32Immediate() [1/2]

static bool isInt32Immediate ( SDNode N,
unsigned &  Imm 
)
static

isInt32Immediate - This method tests to see if the node is a 32-bit constant operand.

If so Imm will receive the 32-bit value.

Definition at line 360 of file ARMISelDAGToDAG.cpp.

References llvm::ISD::Constant, llvm::MVT::i32, and N.

Referenced by isInt32Immediate(), and isOpcWithIntImmediate().

◆ isInt32Immediate() [2/2]

static bool isInt32Immediate ( SDValue  N,
unsigned &  Imm 
)
static

Definition at line 370 of file ARMISelDAGToDAG.cpp.

References isInt32Immediate(), and N.

◆ isOpcWithIntImmediate()

static bool isOpcWithIntImmediate ( SDNode N,
unsigned  Opc,
unsigned &  Imm 
)
static

Definition at line 377 of file ARMISelDAGToDAG.cpp.

References isInt32Immediate(), and N.

◆ isPerfectIncrement()

static bool isPerfectIncrement ( SDValue  Inc,
EVT  VecTy,
unsigned  NumVecs 
)
static

Returns true if the given increment is a Constant known to be equal to the access size performed by a NEON load/store.

This means the "[rN]!" form can be used.

Definition at line 2092 of file ARMISelDAGToDAG.cpp.

References llvm::EVT::getSizeInBits().

◆ isScaledConstantInRange()

static bool isScaledConstantInRange ( SDValue  Node,
int  Scale,
int  RangeMin,
int  RangeMax,
int ScaledConstant 
)
static

Check whether a particular node is a constant value representable as (N * Scale) where (N in [RangeMin, RangeMax).

Parameters
ScaledConstant[out] - On success, the pre-scaled constant value.

Definition at line 386 of file ARMISelDAGToDAG.cpp.

◆ isVLDfixed()

static bool isVLDfixed ( unsigned  Opc)
static

Definition at line 1945 of file ARMISelDAGToDAG.cpp.

Referenced by getVLDSTRegisterUpdateOpcode().

◆ isVSTfixed()

static bool isVSTfixed ( unsigned  Opc)
static

Definition at line 1987 of file ARMISelDAGToDAG.cpp.

Referenced by getVLDSTRegisterUpdateOpcode().

◆ SDValueToConstBool()

static bool SDValueToConstBool ( SDValue  SDVal)
static

Definition at line 2682 of file ARMISelDAGToDAG.cpp.

References assert(), and llvm::ConstantSDNode::getZExtValue().

◆ shouldUseZeroOffsetLdSt()

static bool shouldUseZeroOffsetLdSt ( SDValue  N)
static

Definition at line 1106 of file ARMISelDAGToDAG.cpp.

References llvm::ISD::ADD, and N.

Variable Documentation

◆ DisableShifterOp

cl::opt<bool> DisableShifterOp("disable-shifter-op", cl::Hidden, cl::desc("Disable isel of shifter-op"), cl::init(false))
static