LLVM 20.0.0git
Macros | Functions | Variables
InductiveRangeCheckElimination.cpp File Reference
#include "llvm/Transforms/Scalar/InductiveRangeCheckElimination.h"
#include "llvm/ADT/APInt.h"
#include "llvm/ADT/ArrayRef.h"
#include "llvm/ADT/PriorityWorklist.h"
#include "llvm/ADT/SmallPtrSet.h"
#include "llvm/ADT/SmallVector.h"
#include "llvm/ADT/StringRef.h"
#include "llvm/ADT/Twine.h"
#include "llvm/Analysis/BlockFrequencyInfo.h"
#include "llvm/Analysis/BranchProbabilityInfo.h"
#include "llvm/Analysis/LoopAnalysisManager.h"
#include "llvm/Analysis/LoopInfo.h"
#include "llvm/Analysis/ScalarEvolution.h"
#include "llvm/Analysis/ScalarEvolutionExpressions.h"
#include "llvm/IR/BasicBlock.h"
#include "llvm/IR/CFG.h"
#include "llvm/IR/Constants.h"
#include "llvm/IR/DerivedTypes.h"
#include "llvm/IR/Dominators.h"
#include "llvm/IR/Function.h"
#include "llvm/IR/IRBuilder.h"
#include "llvm/IR/InstrTypes.h"
#include "llvm/IR/Instructions.h"
#include "llvm/IR/Metadata.h"
#include "llvm/IR/Module.h"
#include "llvm/IR/PatternMatch.h"
#include "llvm/IR/Type.h"
#include "llvm/IR/Use.h"
#include "llvm/IR/User.h"
#include "llvm/IR/Value.h"
#include "llvm/Support/BranchProbability.h"
#include "llvm/Support/Casting.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/Compiler.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/raw_ostream.h"
#include "llvm/Transforms/Utils/BasicBlockUtils.h"
#include "llvm/Transforms/Utils/Cloning.h"
#include "llvm/Transforms/Utils/LoopConstrainer.h"
#include "llvm/Transforms/Utils/LoopSimplify.h"
#include "llvm/Transforms/Utils/LoopUtils.h"
#include "llvm/Transforms/Utils/ScalarEvolutionExpander.h"
#include "llvm/Transforms/Utils/ValueMapper.h"
#include <algorithm>
#include <cassert>
#include <iterator>
#include <optional>
#include <utility>

Go to the source code of this file.

Macros

#define DEBUG_TYPE   "irce"
 

Functions

static const SCEVNoopOrExtend (const SCEV *S, Type *Ty, ScalarEvolution &SE, bool Signed)
 If the type of S matches with Ty, return S.
 
static std::optional< LoopConstrainer::SubRangescalculateSubRanges (ScalarEvolution &SE, const Loop &L, InductiveRangeCheck::Range &Range, const LoopStructure &MainLoopStructure)
 
static std::optional< InductiveRangeCheck::Range > IntersectSignedRange (ScalarEvolution &SE, const std::optional< InductiveRangeCheck::Range > &R1, const InductiveRangeCheck::Range &R2)
 
static std::optional< InductiveRangeCheck::Range > IntersectUnsignedRange (ScalarEvolution &SE, const std::optional< InductiveRangeCheck::Range > &R1, const InductiveRangeCheck::Range &R2)
 

Variables

static cl::opt< unsignedLoopSizeCutoff ("irce-loop-size-cutoff", cl::Hidden, cl::init(64))
 
static cl::opt< boolPrintChangedLoops ("irce-print-changed-loops", cl::Hidden, cl::init(false))
 
static cl::opt< boolPrintRangeChecks ("irce-print-range-checks", cl::Hidden, cl::init(false))
 
static cl::opt< boolSkipProfitabilityChecks ("irce-skip-profitability-checks", cl::Hidden, cl::init(false))
 
static cl::opt< unsignedMinRuntimeIterations ("irce-min-runtime-iterations", cl::Hidden, cl::init(10))
 
static cl::opt< boolAllowUnsignedLatchCondition ("irce-allow-unsigned-latch", cl::Hidden, cl::init(true))
 
static cl::opt< boolAllowNarrowLatchCondition ("irce-allow-narrow-latch", cl::Hidden, cl::init(true), cl::desc("If set to true, IRCE may eliminate wide range checks in loops " "with narrow latch condition."))
 
static cl::opt< unsignedMaxTypeSizeForOverflowCheck ("irce-max-type-size-for-overflow-check", cl::Hidden, cl::init(32), cl::desc("Maximum size of range check type for which can be produced runtime " "overflow check of its limit's computation"))
 
static cl::opt< boolPrintScaledBoundaryRangeChecks ("irce-print-scaled-boundary-range-checks", cl::Hidden, cl::init(false))
 

Macro Definition Documentation

◆ DEBUG_TYPE

#define DEBUG_TYPE   "irce"

Definition at line 131 of file InductiveRangeCheckElimination.cpp.

Function Documentation

◆ calculateSubRanges()

static std::optional< LoopConstrainer::SubRanges > calculateSubRanges ( ScalarEvolution SE,
const Loop L,
InductiveRangeCheck::Range &  Range,
const LoopStructure MainLoopStructure 
)
static

◆ IntersectSignedRange()

static std::optional< InductiveRangeCheck::Range > IntersectSignedRange ( ScalarEvolution SE,
const std::optional< InductiveRangeCheck::Range > &  R1,
const InductiveRangeCheck::Range &  R2 
)
static

◆ IntersectUnsignedRange()

static std::optional< InductiveRangeCheck::Range > IntersectUnsignedRange ( ScalarEvolution SE,
const std::optional< InductiveRangeCheck::Range > &  R1,
const InductiveRangeCheck::Range &  R2 
)
static

◆ NoopOrExtend()

static const SCEV * NoopOrExtend ( const SCEV S,
Type Ty,
ScalarEvolution SE,
bool  Signed 
)
static

If the type of S matches with Ty, return S.

Otherwise, return signed or unsigned extension of S to type Ty.

Definition at line 557 of file InductiveRangeCheckElimination.cpp.

References llvm::ScalarEvolution::getNoopOrSignExtend(), llvm::ScalarEvolution::getNoopOrZeroExtend(), and Signed.

Referenced by calculateSubRanges().

Variable Documentation

◆ AllowNarrowLatchCondition

cl::opt< bool > AllowNarrowLatchCondition("irce-allow-narrow-latch", cl::Hidden, cl::init(true), cl::desc("If set to true, IRCE may eliminate wide range checks in loops " "with narrow latch condition.")) ( "irce-allow-narrow-latch"  ,
cl::Hidden  ,
cl::init(true ,
cl::desc("If set to true, IRCE may eliminate wide range checks in loops " "with narrow latch condition.")   
)
static

Referenced by calculateSubRanges().

◆ AllowUnsignedLatchCondition

cl::opt< bool > AllowUnsignedLatchCondition("irce-allow-unsigned-latch", cl::Hidden, cl::init(true)) ( "irce-allow-unsigned-latch"  ,
cl::Hidden  ,
cl::init(true  
)
static

◆ LoopSizeCutoff

cl::opt< unsigned > LoopSizeCutoff("irce-loop-size-cutoff", cl::Hidden, cl::init(64)) ( "irce-loop-size-cutoff"  ,
cl::Hidden  ,
cl::init(64)   
)
static

◆ MaxTypeSizeForOverflowCheck

cl::opt< unsigned > MaxTypeSizeForOverflowCheck("irce-max-type-size-for-overflow-check", cl::Hidden, cl::init(32), cl::desc( "Maximum size of range check type for which can be produced runtime " "overflow check of its limit's computation")) ( "irce-max-type-size-for-overflow-check"  ,
cl::Hidden  ,
cl::init(32)  ,
cl::desc( "Maximum size of range check type for which can be produced runtime " "overflow check of its limit's computation")   
)
static

◆ MinRuntimeIterations

cl::opt< unsigned > MinRuntimeIterations("irce-min-runtime-iterations", cl::Hidden, cl::init(10)) ( "irce-min-runtime-iterations"  ,
cl::Hidden  ,
cl::init(10)   
)
static

◆ PrintChangedLoops

cl::opt< bool > PrintChangedLoops("irce-print-changed-loops", cl::Hidden, cl::init(false)) ( "irce-print-changed-loops"  ,
cl::Hidden  ,
cl::init(false)   
)
static

◆ PrintRangeChecks

cl::opt< bool > PrintRangeChecks("irce-print-range-checks", cl::Hidden, cl::init(false)) ( "irce-print-range-checks"  ,
cl::Hidden  ,
cl::init(false)   
)
static

◆ PrintScaledBoundaryRangeChecks

cl::opt< bool > PrintScaledBoundaryRangeChecks("irce-print-scaled-boundary-range-checks", cl::Hidden, cl::init(false)) ( "irce-print-scaled-boundary-range-checks"  ,
cl::Hidden  ,
cl::init(false)   
)
static

◆ SkipProfitabilityChecks

cl::opt< bool > SkipProfitabilityChecks("irce-skip-profitability-checks", cl::Hidden, cl::init(false)) ( "irce-skip-profitability-checks"  ,
cl::Hidden  ,
cl::init(false)   
)
static

Referenced by llvm::IRCEPass::run().