LLVM  14.0.0git
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UnrollLoop.h File Reference
#include "llvm/ADT/DenseMap.h"
#include "llvm/Analysis/TargetTransformInfo.h"
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struct  llvm::UnrollLoopOptions


 This file implements support for optimizing divisions by a constant.


using llvm::NewLoopsMap = SmallDenseMap< const Loop *, Loop *, 4 >


enum  llvm::LoopUnrollResult { llvm::LoopUnrollResult::Unmodified, llvm::LoopUnrollResult::PartiallyUnrolled, llvm::LoopUnrollResult::FullyUnrolled }
 Represents the result of a UnrollLoop invocation. More...


const Loopllvm::addClonedBlockToLoopInfo (BasicBlock *OriginalBB, BasicBlock *ClonedBB, LoopInfo *LI, NewLoopsMap &NewLoops)
 Adds ClonedBB to LoopInfo, creates a new loop for ClonedBB if necessary and adds a mapping from the original loop to the new loop to NewLoops. More...
LoopUnrollResult llvm::UnrollLoop (Loop *L, UnrollLoopOptions ULO, LoopInfo *LI, ScalarEvolution *SE, DominatorTree *DT, AssumptionCache *AC, const llvm::TargetTransformInfo *TTI, OptimizationRemarkEmitter *ORE, bool PreserveLCSSA, Loop **RemainderLoop=nullptr)
 Unroll the given loop by Count. More...
bool llvm::UnrollRuntimeLoopRemainder (Loop *L, unsigned Count, bool AllowExpensiveTripCount, bool UseEpilogRemainder, bool UnrollRemainder, bool ForgetAllSCEV, LoopInfo *LI, ScalarEvolution *SE, DominatorTree *DT, AssumptionCache *AC, const TargetTransformInfo *TTI, bool PreserveLCSSA, Loop **ResultLoop=nullptr)
 Insert code in the prolog/epilog code when unrolling a loop with a run-time trip-count. More...
LoopUnrollResult llvm::UnrollAndJamLoop (Loop *L, unsigned Count, unsigned TripCount, unsigned TripMultiple, bool UnrollRemainder, LoopInfo *LI, ScalarEvolution *SE, DominatorTree *DT, AssumptionCache *AC, const TargetTransformInfo *TTI, OptimizationRemarkEmitter *ORE, Loop **EpilogueLoop=nullptr)
bool llvm::isSafeToUnrollAndJam (Loop *L, ScalarEvolution &SE, DominatorTree &DT, DependenceInfo &DI, LoopInfo &LI)
bool llvm::computeUnrollCount (Loop *L, const TargetTransformInfo &TTI, DominatorTree &DT, LoopInfo *LI, ScalarEvolution &SE, const SmallPtrSetImpl< const Value * > &EphValues, OptimizationRemarkEmitter *ORE, unsigned TripCount, unsigned MaxTripCount, bool MaxOrZero, unsigned TripMultiple, unsigned LoopSize, TargetTransformInfo::UnrollingPreferences &UP, TargetTransformInfo::PeelingPreferences &PP, bool &UseUpperBound)
void llvm::simplifyLoopAfterUnroll (Loop *L, bool SimplifyIVs, LoopInfo *LI, ScalarEvolution *SE, DominatorTree *DT, AssumptionCache *AC, const TargetTransformInfo *TTI)
 Perform some cleanup and simplifications on loops after unrolling. More...
MDNodellvm::GetUnrollMetadata (MDNode *LoopID, StringRef Name)
 Given an llvm.loop loop id metadata node, returns the loop hint metadata node with the given name (for example, "llvm.loop.unroll.count"). More...
TargetTransformInfo::UnrollingPreferences llvm::gatherUnrollingPreferences (Loop *L, ScalarEvolution &SE, const TargetTransformInfo &TTI, BlockFrequencyInfo *BFI, ProfileSummaryInfo *PSI, llvm::OptimizationRemarkEmitter &ORE, int OptLevel, Optional< unsigned > UserThreshold, Optional< unsigned > UserCount, Optional< bool > UserAllowPartial, Optional< bool > UserRuntime, Optional< bool > UserUpperBound, Optional< unsigned > UserFullUnrollMaxCount)
 Gather the various unrolling parameters based on the defaults, compiler flags, TTI overrides and user specified parameters. More...
unsigned llvm::ApproximateLoopSize (const Loop *L, unsigned &NumCalls, bool &NotDuplicatable, bool &Convergent, const TargetTransformInfo &TTI, const SmallPtrSetImpl< const Value * > &EphValues, unsigned BEInsns)
 ApproximateLoopSize - Approximate the size of the loop. More...


const char *const llvm::LLVMLoopUnrollFollowupAll = "llvm.loop.unroll.followup_all"
const char *const llvm::LLVMLoopUnrollFollowupUnrolled
const char *const llvm::LLVMLoopUnrollFollowupRemainder
const char *const llvm::LLVMLoopUnrollFollowupAll = "llvm.loop.unroll.followup_all"
const char *const llvm::LLVMLoopUnrollFollowupUnrolled
const char *const llvm::LLVMLoopUnrollFollowupRemainder