TargetLoweringBase.cpp File Reference

#include "llvm/ADT/BitVector.h"
#include "llvm/ADT/STLExtras.h"
#include "llvm/ADT/SmallVector.h"
#include "llvm/ADT/StringExtras.h"
#include "llvm/ADT/StringRef.h"
#include "llvm/ADT/Twine.h"
#include "llvm/Analysis/Loads.h"
#include "llvm/Analysis/TargetTransformInfo.h"
#include "llvm/CodeGen/Analysis.h"
#include "llvm/CodeGen/ISDOpcodes.h"
#include "llvm/CodeGen/MachineBasicBlock.h"
#include "llvm/CodeGen/MachineFrameInfo.h"
#include "llvm/CodeGen/MachineFunction.h"
#include "llvm/CodeGen/MachineInstr.h"
#include "llvm/CodeGen/MachineInstrBuilder.h"
#include "llvm/CodeGen/MachineMemOperand.h"
#include "llvm/CodeGen/MachineOperand.h"
#include "llvm/CodeGen/MachineRegisterInfo.h"
#include "llvm/CodeGen/RuntimeLibcallUtil.h"
#include "llvm/CodeGen/StackMaps.h"
#include "llvm/CodeGen/TargetLowering.h"
#include "llvm/CodeGen/TargetOpcodes.h"
#include "llvm/CodeGen/TargetRegisterInfo.h"
#include "llvm/CodeGen/ValueTypes.h"
#include "llvm/CodeGenTypes/MachineValueType.h"
#include "llvm/IR/Attributes.h"
#include "llvm/IR/CallingConv.h"
#include "llvm/IR/DataLayout.h"
#include "llvm/IR/DerivedTypes.h"
#include "llvm/IR/Function.h"
#include "llvm/IR/GlobalValue.h"
#include "llvm/IR/GlobalVariable.h"
#include "llvm/IR/IRBuilder.h"
#include "llvm/IR/Module.h"
#include "llvm/IR/Type.h"
#include "llvm/Support/Casting.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/Compiler.h"
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/MathExtras.h"
#include "llvm/Target/TargetMachine.h"
#include "llvm/Target/TargetOptions.h"
#include "llvm/TargetParser/Triple.h"
#include "llvm/Transforms/Utils/SizeOpts.h"
#include <algorithm>
#include <cassert>
#include <cstdint>
#include <cstring>
#include <iterator>
#include <string>
#include <tuple>
#include <utility>
#include "llvm/IR/ConstrainedOps.def"
#include "llvm/IR/VPIntrinsics.def"
#include "llvm/IR/Instruction.def"

Go to the source code of this file.

Macros
#define	LCALLS(A, B)
#define	LCALL5(A)
#define	OP_TO_LIBCALL(Name, Enum)
#define	DAG_INSTRUCTION(NAME, NARG, ROUND_MODE, INTRINSIC, DAGN)
#define	BEGIN_REGISTER_VP_SDNODE(SDOPC, ...)
#define	HANDLE_INST(NUM, OPCODE, CLASS)
#define	LAST_OTHER_INST(NUM)

Functions
static unsigned	getVectorTypeBreakdownMVT (MVT VT, MVT &IntermediateVT, unsigned &NumIntermediates, MVT &RegisterVT, TargetLoweringBase *TLI)
static StringRef	getRecipEstimateForFunc (MachineFunction &MF)
	Get the reciprocal estimate attribute string for a function that will override the target defaults.
static std::string	getReciprocalOpName (bool IsSqrt, EVT VT)
	Construct a string for the given reciprocal operation of the given type.
static bool	parseRefinementStep (StringRef In, size_t &Position, uint8_t &Value)
	Return the character position and value (a single numeric character) of a customized refinement operation in the input string if it exists.
static int	getOpEnabled (bool IsSqrt, EVT VT, StringRef Override)
	For the input attribute string, return one of the ReciprocalEstimate enum status values (enabled, disabled, or not specified) for this operation on the specified data type.
static int	getOpRefinementSteps (bool IsSqrt, EVT VT, StringRef Override)
	For the input attribute string, return the customized refinement step count for this operation on the specified data type.

Variables
static cl::opt< bool >	JumpIsExpensiveOverride ("jump-is-expensive", cl::init(false), cl::desc("Do not create extra branches to split comparison logic."), cl::Hidden)
static cl::opt< unsigned >	MinimumJumpTableEntries ("min-jump-table-entries", cl::init(4), cl::Hidden, cl::desc("Set minimum number of entries to use a jump table."))
static cl::opt< unsigned >	MaximumJumpTableSize ("max-jump-table-size", cl::init(UINT_MAX), cl::Hidden, cl::desc("Set maximum size of jump tables."))
static cl::opt< unsigned >	JumpTableDensity ("jump-table-density", cl::init(10), cl::Hidden, cl::desc("Minimum density for building a jump table in " "a normal function"))
	Minimum jump table density for normal functions.
static cl::opt< unsigned >	OptsizeJumpTableDensity ("optsize-jump-table-density", cl::init(40), cl::Hidden, cl::desc("Minimum density for building a jump table in " "an optsize function"))
	Minimum jump table density for -Os or -Oz functions.
static cl::opt< bool >	DisableStrictNodeMutation ("disable-strictnode-mutation", cl::desc("Don't mutate strict-float node to a legalize node"), cl::init(false), cl::Hidden)

Macro Definition Documentation

BEGIN_REGISTER_VP_SDNODE

#define BEGIN_REGISTER_VP_SDNODE	(		SDOPC,
			... )

Value:

    setOperationAction(ISD::SDOPC, VT, Expand);

DAG_INSTRUCTION

#define DAG_INSTRUCTION	(		NAME,
			NARG,
			ROUND_MODE,
			INTRINSIC,
			DAGN )

Value:

    setOperationAction(ISD::STRICT_##DAGN, VT, Expand);

HANDLE_INST

#define HANDLE_INST	(		NUM,
			OPCODE,
			CLASS )

Value:

OPCODE = NUM,

LAST_OTHER_INST

#define LAST_OTHER_INST

(

NUM

)

Value:

InstructionOpcodesCount = NUM

LCALL5

#define LCALL5

(

A

)

Value:

  LCALLS(A, 1), LCALLS(A, 2), LCALLS(A, 4), LCALLS(A, 8), LCALLS(A, 16)

Referenced by llvm::RTLIB::getOUTLINE_ATOMIC().

LCALLS

#define LCALLS	(		A,
			B )

Value:

  { A##B##_RELAX, A##B##_ACQ, A##B##_REL, A##B##_ACQ_REL }

OP_TO_LIBCALL

#define OP_TO_LIBCALL	(		Name,
			Enum )

Value:

  case Name:                                                                   \
    switch (VT.SimpleTy) {                                                     \
    default:                                                                   \
      return UNKNOWN_LIBCALL;                                                  \
    case MVT::i8:                                                              \
      return Enum##_1;                                                         \
    case MVT::i16:                                                             \
      return Enum##_2;                                                         \
    case MVT::i32:                                                             \
      return Enum##_4;                                                         \
    case MVT::i64:                                                             \
      return Enum##_8;                                                         \
    case MVT::i128:                                                            \
      return Enum##_16;                                                        \
    }

Referenced by llvm::RTLIB::getSYNC().

Function Documentation

getOpEnabled()

int getOpEnabled ( bool IsSqrt, EVT VT, StringRef Override )

static

For the input attribute string, return one of the ReciprocalEstimate enum status values (enabled, disabled, or not specified) for this operation on the specified data type.

Definition at line 2197 of file TargetLoweringBase.cpp.

References llvm::TargetLoweringBase::Disabled, llvm::StringRef::empty(), llvm::TargetLoweringBase::Enabled, getReciprocalOpName(), parseRefinementStep(), llvm::SmallVectorTemplateCommon< T, typename >::size(), llvm::StringRef::split(), llvm::StringRef::substr(), and llvm::TargetLoweringBase::Unspecified.

Referenced by llvm::TargetLoweringBase::getRecipEstimateDivEnabled(), and llvm::TargetLoweringBase::getRecipEstimateSqrtEnabled().

getOpRefinementSteps()

int getOpRefinementSteps ( bool IsSqrt, EVT VT, StringRef Override )

static

For the input attribute string, return the customized refinement step count for this operation on the specified data type.

If the step count does not exist, return the ReciprocalEstimate enum value for unspecified.

Definition at line 2257 of file TargetLoweringBase.cpp.

References assert(), llvm::StringRef::empty(), getReciprocalOpName(), parseRefinementStep(), llvm::SmallVectorTemplateCommon< T, typename >::size(), llvm::StringRef::split(), llvm::StringRef::substr(), and llvm::TargetLoweringBase::Unspecified.

Referenced by llvm::TargetLoweringBase::getDivRefinementSteps(), and llvm::TargetLoweringBase::getSqrtRefinementSteps().

getRecipEstimateForFunc()

StringRef getRecipEstimateForFunc ( MachineFunction & MF )

static

Get the reciprocal estimate attribute string for a function that will override the target defaults.

Definition at line 2143 of file TargetLoweringBase.cpp.

References F, and llvm::MachineFunction::getFunction().

Referenced by llvm::TargetLoweringBase::getDivRefinementSteps(), llvm::TargetLoweringBase::getRecipEstimateDivEnabled(), llvm::TargetLoweringBase::getRecipEstimateSqrtEnabled(), and llvm::TargetLoweringBase::getSqrtRefinementSteps().

getReciprocalOpName()

std::string getReciprocalOpName ( bool IsSqrt, EVT VT )

static

Construct a string for the given reciprocal operation of the given type.

This string should match the corresponding option to the front-end's "-mrecip" flag assuming those strings have been passed through in an attribute string. For example, "vec-divf" for a division of a vXf32.

Definition at line 2152 of file TargetLoweringBase.cpp.

References assert(), llvm::EVT::getScalarType(), and llvm::EVT::isVector().

Referenced by getOpEnabled(), and getOpRefinementSteps().

getVectorTypeBreakdownMVT()

unsigned getVectorTypeBreakdownMVT ( MVT VT, MVT & IntermediateVT, unsigned & NumIntermediates, MVT & RegisterVT, TargetLoweringBase * TLI )

static

Definition at line 1166 of file TargetLoweringBase.cpp.

References llvm::bit_ceil(), llvm::ElementCount::getFixed(), llvm::TargetLoweringBase::getRegisterType(), llvm::MVT::getScalarSizeInBits(), llvm::MVT::getVectorElementCount(), llvm::MVT::getVectorElementType(), llvm::MVT::getVectorVT(), llvm::isPowerOf2_32(), llvm::MVT::isScalableVector(), llvm::TargetLoweringBase::isTypeLegal(), and llvm_unreachable.

Referenced by llvm::TargetLoweringBase::computeRegisterProperties().

parseRefinementStep()

bool parseRefinementStep ( StringRef In, size_t & Position, uint8_t & Value )

static

Return the character position and value (a single numeric character) of a customized refinement operation in the input string if it exists.

Return false if there is no customized refinement step count.

Definition at line 2174 of file TargetLoweringBase.cpp.

References llvm::isDigit(), llvm::StringRef::npos, llvm::report_fatal_error(), and llvm::StringRef::size().

Referenced by getOpEnabled(), and getOpRefinementSteps().

Variable Documentation

DisableStrictNodeMutation

cl::opt< bool > DisableStrictNodeMutation("disable-strictnode-mutation", cl::desc("Don't mutate strict-float node to a legalize node"), cl::init(false), cl::Hidden) ( "disable-strictnode-mutation" , cl::desc("Don't mutate strict-float node to a legalize node") , cl::init(false) , cl::Hidden  )

static

Referenced by llvm::TargetLoweringBase::TargetLoweringBase().

JumpIsExpensiveOverride

cl::opt< bool > JumpIsExpensiveOverride("jump-is-expensive", cl::init(false), cl::desc("Do not create extra branches to split comparison logic."), cl::Hidden) ( "jump-is-expensive" , cl::init(false) , cl::desc("Do not create extra branches to split comparison logic.") , cl::Hidden  )

static

Referenced by llvm::TargetLoweringBase::setJumpIsExpensive(), and llvm::TargetLoweringBase::TargetLoweringBase().

JumpTableDensity

cl::opt< unsigned > JumpTableDensity("jump-table-density", cl::init(10), cl::Hidden, cl::desc("Minimum density for building a jump table in " "a normal function")) ( "jump-table-density" , cl::init(10) , cl::Hidden , cl::desc("Minimum density for building a jump table in " "a normal function")  )

static

Minimum jump table density for normal functions.

Referenced by llvm::TargetLoweringBase::getMinimumJumpTableDensity().

MaximumJumpTableSize

cl::opt< unsigned > MaximumJumpTableSize("max-jump-table-size", cl::init(UINT_MAX), cl::Hidden, cl::desc("Set maximum size of jump tables.")) ( "max-jump-table-size" , cl::init(UINT_MAX) , cl::Hidden , cl::desc("Set maximum size of jump tables.")  )

static

Referenced by llvm::TargetLoweringBase::getMaximumJumpTableSize(), and llvm::TargetLoweringBase::setMaximumJumpTableSize().

MinimumJumpTableEntries

cl::opt< unsigned > MinimumJumpTableEntries("min-jump-table-entries", cl::init(4), cl::Hidden, cl::desc("Set minimum number of entries to use a jump table.")) ( "min-jump-table-entries" , cl::init(4) , cl::Hidden , cl::desc("Set minimum number of entries to use a jump table.")  )

static

Referenced by llvm::TargetLoweringBase::getMinimumJumpTableEntries(), and llvm::TargetLoweringBase::setMinimumJumpTableEntries().

OptsizeJumpTableDensity

cl::opt< unsigned > OptsizeJumpTableDensity("optsize-jump-table-density", cl::init(40), cl::Hidden, cl::desc("Minimum density for building a jump table in " "an optsize function")) ( "optsize-jump-table-density" , cl::init(40) , cl::Hidden , cl::desc("Minimum density for building a jump table in " "an optsize function")  )

static

Minimum jump table density for -Os or -Oz functions.

Referenced by llvm::TargetLoweringBase::getMinimumJumpTableDensity().