ComplexDeinterleavingPass.cpp File Reference

#include "llvm/CodeGen/ComplexDeinterleavingPass.h"
#include "llvm/ADT/MapVector.h"
#include "llvm/ADT/Statistic.h"
#include "llvm/Analysis/TargetLibraryInfo.h"
#include "llvm/Analysis/TargetTransformInfo.h"
#include "llvm/CodeGen/TargetLowering.h"
#include "llvm/CodeGen/TargetPassConfig.h"
#include "llvm/CodeGen/TargetSubtargetInfo.h"
#include "llvm/IR/IRBuilder.h"
#include "llvm/IR/PatternMatch.h"
#include "llvm/InitializePasses.h"
#include "llvm/Target/TargetMachine.h"
#include "llvm/Transforms/Utils/Local.h"
#include <algorithm>

Go to the source code of this file.

Macros
#define	DEBUG_TYPE   "complex-deinterleaving"

Functions
	STATISTIC (NumComplexTransformations, "Amount of complex patterns transformed")
static bool	isInterleavingMask (ArrayRef< int > Mask)
	Checks the given mask, and determines whether said mask is interleaving.
static bool	isDeinterleavingMask (ArrayRef< int > Mask)
	Checks the given mask, and determines whether said mask is deinterleaving.
static bool	isNeg (Value *V)
	Returns true if the operation is a negation of V, and it works for both integers and floats.
static Value *	getNegOperand (Value *V)
	Returns the operand for negation operation.
	INITIALIZE_PASS_BEGIN (ComplexDeinterleavingLegacyPass, DEBUG_TYPE, "Complex Deinterleaving", false, false) INITIALIZE_PASS_END(ComplexDeinterleavingLegacyPass
static bool	isInstructionPairAdd (Instruction *A, Instruction *B)
static bool	isInstructionPairMul (Instruction *A, Instruction *B)
static bool	isInstructionPotentiallySymmetric (Instruction *I)
static Value *	replaceSymmetricNode (IRBuilderBase &B, unsigned Opcode, std::optional< FastMathFlags > Flags, Value *InputA, Value *InputB)

Variables
static cl::opt< bool >	ComplexDeinterleavingEnabled ("enable-complex-deinterleaving", cl::desc("Enable generation of complex instructions"), cl::init(true), cl::Hidden)
	DEBUG_TYPE
Complex	Deinterleaving
Complex	false

Macro Definition Documentation

DEBUG_TYPE

#define DEBUG_TYPE   "complex-deinterleaving"

Definition at line 80 of file ComplexDeinterleavingPass.cpp.

Function Documentation

getNegOperand()

Value * getNegOperand ( Value *  V )

static

Returns the operand for negation operation.

Definition at line 523 of file ComplexDeinterleavingPass.cpp.

References assert(), I, and isNeg().

INITIALIZE_PASS_BEGIN()

INITIALIZE_PASS_BEGIN	(	ComplexDeinterleavingLegacyPass	,
		DEBUG_TYPE	,
		"Complex Deinterleaving"	,
		false	,
		false
	)

isDeinterleavingMask()

static bool isDeinterleavingMask ( ArrayRef< int >  Mask )

static

Checks the given mask, and determines whether said mask is deinterleaving.

To be deinterleaving, a mask must increment in steps of 2, and either start with 0 or 1. (e.g. an 8x vector deinterleaving mask would be either <0, 2, 4, 6> or <1, 3, 5, 7>).

Definition at line 507 of file ComplexDeinterleavingPass.cpp.

References Idx, and llvm::Offset.

isInstructionPairAdd()

static bool isInstructionPairAdd ( Instruction *  A, Instruction *  B  )

static

Definition at line 819 of file ComplexDeinterleavingPass.cpp.

References A, and B.

isInstructionPairMul()

static bool isInstructionPairMul ( Instruction *  A, Instruction *  B  )

static

Definition at line 829 of file ComplexDeinterleavingPass.cpp.

References A, B, llvm::PatternMatch::m_BinOp(), llvm::PatternMatch::m_FMul(), llvm::PatternMatch::m_Value(), and llvm::PatternMatch::match().

isInstructionPotentiallySymmetric()

static bool isInstructionPotentiallySymmetric ( Instruction *  I )

static

Definition at line 836 of file ComplexDeinterleavingPass.cpp.

References I.

isInterleavingMask()

static bool isInterleavingMask ( ArrayRef< int >  Mask )

static

Checks the given mask, and determines whether said mask is interleaving.

To be interleaving, a mask must alternate between i and i + (Length / 2), and must contain all numbers within the range of [0..Length) (e.g. a 4x vector interleaving mask would be <0, 2, 1, 3>).

Definition at line 492 of file ComplexDeinterleavingPass.cpp.

References Idx.

isNeg()

bool isNeg ( Value *  V )

static

Returns true if the operation is a negation of V, and it works for both integers and floats.

Definition at line 519 of file ComplexDeinterleavingPass.cpp.

References llvm::PatternMatch::m_FNeg(), llvm::PatternMatch::m_Neg(), llvm::PatternMatch::m_Value(), and llvm::PatternMatch::match().

Referenced by DecodeBFLabelOperand(), expandMOVImmSimple(), getNegOperand(), KnuthDiv(), llvm::APIntOps::RoundDoubleToAPInt(), and llvm::APInt::roundToDouble().

replaceSymmetricNode()

static Value * replaceSymmetricNode ( IRBuilderBase &  B, unsigned  Opcode, std::optional< FastMathFlags >  Flags, Value *  InputA, Value *  InputB  )

static

Definition at line 1883 of file ComplexDeinterleavingPass.cpp.

References B, I, and llvm_unreachable.

STATISTIC()

STATISTIC	(	NumComplexTransformations	,
		"Amount of complex patterns transformed"
	)

Variable Documentation

ComplexDeinterleavingEnabled

cl::opt< bool > ComplexDeinterleavingEnabled("enable-complex-deinterleaving", cl::desc("Enable generation of complex instructions"), cl::init(true), cl::Hidden) ( "enable-complex-deinterleaving"  , cl::desc("Enable generation of complex instructions")  , cl::init(true)  , cl::Hidden    )

static

DEBUG_TYPE

DEBUG_TYPE

Definition at line 446 of file ComplexDeinterleavingPass.cpp.

Deinterleaving

Complex Deinterleaving

Definition at line 447 of file ComplexDeinterleavingPass.cpp.

false

Complex false

Definition at line 447 of file ComplexDeinterleavingPass.cpp.