LLVM 20.0.0git
Macros | Functions | Variables
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)    { A##B##_RELAX, A##B##_ACQ, A##B##_REL, A##B##_ACQ_REL }
 
#define LCALL5(A)    LCALLS(A, 1), LCALLS(A, 2), LCALLS(A, 4), LCALLS(A, 8), LCALLS(A, 16)
 
#define OP_TO_LIBCALL(Name, Enum)
 
#define DAG_INSTRUCTION(NAME, NARG, ROUND_MODE, INTRINSIC, DAGN)    setOperationAction(ISD::STRICT_##DAGN, VT, Expand);
 
#define BEGIN_REGISTER_VP_SDNODE(SDOPC, ...)    setOperationAction(ISD::SDOPC, VT, Expand);
 
#define HANDLE_INST(NUM, OPCODE, CLASS)   OPCODE = NUM,
 
#define LAST_OTHER_INST(NUM)   InstructionOpcodesCount = 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< boolJumpIsExpensiveOverride ("jump-is-expensive", cl::init(false), cl::desc("Do not create extra branches to split comparison logic."), cl::Hidden)
 
static cl::opt< unsignedMinimumJumpTableEntries ("min-jump-table-entries", cl::init(4), cl::Hidden, cl::desc("Set minimum number of entries to use a jump table."))
 
static cl::opt< unsignedMaximumJumpTableSize ("max-jump-table-size", cl::init(UINT_MAX), cl::Hidden, cl::desc("Set maximum size of jump tables."))
 
static cl::opt< unsignedJumpTableDensity ("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< unsignedOptsizeJumpTableDensity ("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< boolDisableStrictNodeMutation ("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,
  ... 
)     setOperationAction(ISD::SDOPC, VT, Expand);

◆ DAG_INSTRUCTION

#define DAG_INSTRUCTION (   NAME,
  NARG,
  ROUND_MODE,
  INTRINSIC,
  DAGN 
)     setOperationAction(ISD::STRICT_##DAGN, VT, Expand);

◆ HANDLE_INST

#define HANDLE_INST (   NUM,
  OPCODE,
  CLASS 
)    OPCODE = NUM,

◆ LAST_OTHER_INST

#define LAST_OTHER_INST (   NUM)    InstructionOpcodesCount = NUM

◆ LCALL5

#define LCALL5 (   A)     LCALLS(A, 1), LCALLS(A, 2), LCALLS(A, 4), LCALLS(A, 8), LCALLS(A, 16)

◆ LCALLS

#define LCALLS (   A,
  B 
)     { 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; \
}
std::string Name

Function Documentation

◆ getOpEnabled()

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

◆ getOpRefinementSteps()

static 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 2136 of file TargetLoweringBase.cpp.

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

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

◆ getRecipEstimateForFunc()

static StringRef getRecipEstimateForFunc ( MachineFunction MF)
static

◆ getReciprocalOpName()

static 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 2031 of file TargetLoweringBase.cpp.

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

Referenced by getOpEnabled(), and getOpRefinementSteps().

◆ getVectorTypeBreakdownMVT()

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

◆ parseRefinementStep()

static 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 2053 of file TargetLoweringBase.cpp.

References 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

◆ 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

◆ 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

◆ 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

◆ 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().