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llvm/trunk/lib/Analysis/LoopAccessAnalysis.cpp
| Show First 20 Lines • Show All 1,534 Lines • ▼ Show 20 Lines | MemoryDepChecker::isDependent(const MemAccessInfo &A, unsigned AIdx, | ||||
| MaxSafeDepDistBytes = | MaxSafeDepDistBytes = | ||||
| std::min(static_cast<uint64_t>(Distance), MaxSafeDepDistBytes); | std::min(static_cast<uint64_t>(Distance), MaxSafeDepDistBytes); | ||||
| bool IsTrueDataDependence = (!AIsWrite && BIsWrite); | bool IsTrueDataDependence = (!AIsWrite && BIsWrite); | ||||
| if (IsTrueDataDependence && EnableForwardingConflictDetection && | if (IsTrueDataDependence && EnableForwardingConflictDetection && | ||||
| couldPreventStoreLoadForward(Distance, TypeByteSize)) | couldPreventStoreLoadForward(Distance, TypeByteSize)) | ||||
| return Dependence::BackwardVectorizableButPreventsForwarding; | return Dependence::BackwardVectorizableButPreventsForwarding; | ||||
| uint64_t MaxVF = MaxSafeDepDistBytes / (TypeByteSize * Stride); | |||||
| DEBUG(dbgs() << "LAA: Positive distance " << Val.getSExtValue() | DEBUG(dbgs() << "LAA: Positive distance " << Val.getSExtValue() | ||||
| << " with max VF = " | << " with max VF = " << MaxVF << '\n'); | ||||
| << MaxSafeDepDistBytes / (TypeByteSize * Stride) << '\n'); | uint64_t MaxVFInBits = MaxVF * TypeByteSize * 8; | ||||
| MaxSafeRegisterWidth = std::min(MaxSafeRegisterWidth, MaxVFInBits); | |||||
| return Dependence::BackwardVectorizable; | return Dependence::BackwardVectorizable; | ||||
| } | } | ||||
| bool MemoryDepChecker::areDepsSafe(DepCandidates &AccessSets, | bool MemoryDepChecker::areDepsSafe(DepCandidates &AccessSets, | ||||
| MemAccessInfoList &CheckDeps, | MemAccessInfoList &CheckDeps, | ||||
| const ValueToValueMap &Strides) { | const ValueToValueMap &Strides) { | ||||
| MaxSafeDepDistBytes = -1; | MaxSafeDepDistBytes = -1; | ||||
| ▲ Show 20 Lines • Show All 706 Lines • Show Last 20 Lines | |||||