LoopVectorizationLegality.cpp File Reference

#include "llvm/Transforms/Vectorize/LoopVectorizationLegality.h"
#include "llvm/Analysis/Loads.h"
#include "llvm/Analysis/LoopInfo.h"
#include "llvm/Analysis/TargetLibraryInfo.h"
#include "llvm/Analysis/ValueTracking.h"
#include "llvm/Analysis/VectorUtils.h"
#include "llvm/IR/IntrinsicInst.h"
#include "llvm/IR/PatternMatch.h"
#include "llvm/Transforms/Utils/SizeOpts.h"
#include "llvm/Transforms/Vectorize/LoopVectorize.h"

Include dependency graph for LoopVectorizationLegality.cpp:

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Namespaces
	llvm
	This is an optimization pass for GlobalISel generic memory operations.

Macros
#define	LV_NAME   "loop-vectorize"
#define	DEBUG_TYPE   LV_NAME

Functions
static bool	llvm::isUniformLoop (Loop *Lp, Loop *OuterLp)
static bool	llvm::isUniformLoopNest (Loop *Lp, Loop *OuterLp)
static bool	llvm::canIfConvertPHINodes (BasicBlock *BB)
	Check whether it is safe to if-convert this phi node. More...
static Type *	llvm::convertPointerToIntegerType (const DataLayout &DL, Type *Ty)
static Type *	llvm::getWiderType (const DataLayout &DL, Type *Ty0, Type *Ty1)
static bool	llvm::hasOutsideLoopUser (const Loop *TheLoop, Instruction *Inst, SmallPtrSetImpl< Value * > &AllowedExit)
	Check that the instruction has outside loop users and is not an identified reduction variable. More...
static bool	llvm::isTLIScalarize (const TargetLibraryInfo &TLI, const CallInst &CI)
	Checks if a function is scalarizable according to the TLI, in the sense that it should be vectorized and then expanded in multiple scalar calls. More...

Variables
cl::opt< bool >	EnableVPlanPredication
static cl::opt< bool >	EnableIfConversion ("enable-if-conversion", cl::init(true), cl::Hidden, cl::desc("Enable if-conversion during vectorization."))
cl::opt< bool >	llvm::HintsAllowReordering ("hints-allow-reordering", cl::init(true), cl::Hidden, cl::desc("Allow enabling loop hints to reorder " "FP operations during vectorization."))
static cl::opt< unsigned >	VectorizeSCEVCheckThreshold ("vectorize-scev-check-threshold", cl::init(16), cl::Hidden, cl::desc("The maximum number of SCEV checks allowed."))
static cl::opt< unsigned >	PragmaVectorizeSCEVCheckThreshold ("pragma-vectorize-scev-check-threshold", cl::init(128), cl::Hidden, cl::desc("The maximum number of SCEV checks allowed with a " "vectorize(enable) pragma"))
static cl::opt< LoopVectorizeHints::ScalableForceKind >	ScalableVectorization ("scalable-vectorization", cl::init(LoopVectorizeHints::SK_FixedWidthOnly), cl::Hidden, cl::desc("Control whether the compiler can use scalable vectors to " "vectorize a loop"), cl::values(clEnumValN(LoopVectorizeHints::SK_FixedWidthOnly, "off", "Scalable vectorization is disabled."), clEnumValN(LoopVectorizeHints::SK_PreferFixedWidth, "on", "Scalable vectorization is available, but favor fixed-width " "vectorization when the cost is inconclusive."), clEnumValN(LoopVectorizeHints::SK_PreferScalable, "preferred", "Scalable vectorization is available and favored when the " "cost is inconclusive.")))
static const unsigned	MaxInterleaveFactor = 16
	Maximum vectorization interleave count. More...

Macro Definition Documentation

DEBUG_TYPE

#define DEBUG_TYPE   LV_NAME

Definition at line 32 of file LoopVectorizationLegality.cpp.

LV_NAME

#define LV_NAME   "loop-vectorize"

Definition at line 31 of file LoopVectorizationLegality.cpp.

Variable Documentation

EnableIfConversion

cl::opt<bool> EnableIfConversion("enable-if-conversion", cl::init(true), cl::Hidden, cl::desc("Enable if-conversion during vectorization."))

static

EnableVPlanPredication

cl::opt<bool> EnableVPlanPredication

Referenced by processLoopInVPlanNativePath().

MaxInterleaveFactor

const unsigned MaxInterleaveFactor = 16

static

Maximum vectorization interleave count.

Definition at line 76 of file LoopVectorizationLegality.cpp.

PragmaVectorizeSCEVCheckThreshold

cl::opt<unsigned> PragmaVectorizeSCEVCheckThreshold("pragma-vectorize-scev-check-threshold", cl::init(128), cl::Hidden, cl::desc("The maximum number of SCEV checks allowed with a " "vectorize(enable) pragma"))

static

Referenced by llvm::LoopVectorizationLegality::canVectorize().

ScalableVectorization

cl::opt<LoopVectorizeHints::ScalableForceKind> ScalableVectorization("scalable-vectorization", cl::init(LoopVectorizeHints::SK_FixedWidthOnly), cl::Hidden, cl::desc("Control whether the compiler can use scalable vectors to " "vectorize a loop"), cl::values( clEnumValN(LoopVectorizeHints::SK_FixedWidthOnly, "off", "Scalable vectorization is disabled."), clEnumValN(LoopVectorizeHints::SK_PreferFixedWidth, "on", "Scalable vectorization is available, but favor fixed-width " "vectorization when the cost is inconclusive."), clEnumValN(LoopVectorizeHints::SK_PreferScalable, "preferred", "Scalable vectorization is available and favored when the " "cost is inconclusive.")))

static

Referenced by llvm::LoopVectorizeHints::LoopVectorizeHints().

VectorizeSCEVCheckThreshold

cl::opt<unsigned> VectorizeSCEVCheckThreshold("vectorize-scev-check-threshold", cl::init(16), cl::Hidden, cl::desc("The maximum number of SCEV checks allowed."))

static

Referenced by llvm::LoopVectorizationLegality::canVectorize().