1 files changed, 0 insertions, 671 deletions
diff --git a/gnu/llvm/lib/Analysis/ObjCARCInstKind.cpp b/gnu/llvm/lib/Analysis/ObjCARCInstKind.cpp
deleted file mode 100644
index 31c43271183..00000000000
--- a/gnu/llvm/lib/Analysis/ObjCARCInstKind.cpp
+++ /dev/null
@@ -1,671 +0,0 @@
-//===- ARCInstKind.cpp - ObjC ARC Optimization ----------------------------===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-/// \file
-/// This file defines several utility functions used by various ARC
-/// optimizations which are IMHO too big to be in a header file.
-///
-/// WARNING: This file knows about certain library functions. It recognizes them
-/// by name, and hardwires knowledge of their semantics.
-///
-/// WARNING: This file knows about how certain Objective-C library functions are
-/// used. Naive LLVM IR transformations which would otherwise be
-/// behavior-preserving may break these assumptions.
-///
-//===----------------------------------------------------------------------===//
-
-#include "llvm/Analysis/ObjCARCInstKind.h"
-#include "llvm/ADT/StringSwitch.h"
-#include "llvm/Analysis/ObjCARCAnalysisUtils.h"
-#include "llvm/IR/Intrinsics.h"
-
-using namespace llvm;
-using namespace llvm::objcarc;
-
-raw_ostream &llvm::objcarc::operator<<(raw_ostream &OS,
-                                       const ARCInstKind Class) {
-  switch (Class) {
-  case ARCInstKind::Retain:
-    return OS << "ARCInstKind::Retain";
-  case ARCInstKind::RetainRV:
-    return OS << "ARCInstKind::RetainRV";
-  case ARCInstKind::ClaimRV:
-    return OS << "ARCInstKind::ClaimRV";
-  case ARCInstKind::RetainBlock:
-    return OS << "ARCInstKind::RetainBlock";
-  case ARCInstKind::Release:
-    return OS << "ARCInstKind::Release";
-  case ARCInstKind::Autorelease:
-    return OS << "ARCInstKind::Autorelease";
-  case ARCInstKind::AutoreleaseRV:
-    return OS << "ARCInstKind::AutoreleaseRV";
-  case ARCInstKind::AutoreleasepoolPush:
-    return OS << "ARCInstKind::AutoreleasepoolPush";
-  case ARCInstKind::AutoreleasepoolPop:
-    return OS << "ARCInstKind::AutoreleasepoolPop";
-  case ARCInstKind::NoopCast:
-    return OS << "ARCInstKind::NoopCast";
-  case ARCInstKind::FusedRetainAutorelease:
-    return OS << "ARCInstKind::FusedRetainAutorelease";
-  case ARCInstKind::FusedRetainAutoreleaseRV:
-    return OS << "ARCInstKind::FusedRetainAutoreleaseRV";
-  case ARCInstKind::LoadWeakRetained:
-    return OS << "ARCInstKind::LoadWeakRetained";
-  case ARCInstKind::StoreWeak:
-    return OS << "ARCInstKind::StoreWeak";
-  case ARCInstKind::InitWeak:
-    return OS << "ARCInstKind::InitWeak";
-  case ARCInstKind::LoadWeak:
-    return OS << "ARCInstKind::LoadWeak";
-  case ARCInstKind::MoveWeak:
-    return OS << "ARCInstKind::MoveWeak";
-  case ARCInstKind::CopyWeak:
-    return OS << "ARCInstKind::CopyWeak";
-  case ARCInstKind::DestroyWeak:
-    return OS << "ARCInstKind::DestroyWeak";
-  case ARCInstKind::StoreStrong:
-    return OS << "ARCInstKind::StoreStrong";
-  case ARCInstKind::CallOrUser:
-    return OS << "ARCInstKind::CallOrUser";
-  case ARCInstKind::Call:
-    return OS << "ARCInstKind::Call";
-  case ARCInstKind::User:
-    return OS << "ARCInstKind::User";
-  case ARCInstKind::IntrinsicUser:
-    return OS << "ARCInstKind::IntrinsicUser";
-  case ARCInstKind::None:
-    return OS << "ARCInstKind::None";
-  }
-  llvm_unreachable("Unknown instruction class!");
-}
-
-ARCInstKind llvm::objcarc::GetFunctionClass(const Function *F) {
-
-  Intrinsic::ID ID = F->getIntrinsicID();
-  switch (ID) {
-  default:
-    return ARCInstKind::CallOrUser;
-  case Intrinsic::objc_autorelease:
-    return ARCInstKind::Autorelease;
-  case Intrinsic::objc_autoreleasePoolPop:
-    return ARCInstKind::AutoreleasepoolPop;
-  case Intrinsic::objc_autoreleasePoolPush:
-    return ARCInstKind::AutoreleasepoolPush;
-  case Intrinsic::objc_autoreleaseReturnValue:
-    return ARCInstKind::AutoreleaseRV;
-  case Intrinsic::objc_copyWeak:
-    return ARCInstKind::CopyWeak;
-  case Intrinsic::objc_destroyWeak:
-    return ARCInstKind::DestroyWeak;
-  case Intrinsic::objc_initWeak:
-    return ARCInstKind::InitWeak;
-  case Intrinsic::objc_loadWeak:
-    return ARCInstKind::LoadWeak;
-  case Intrinsic::objc_loadWeakRetained:
-    return ARCInstKind::LoadWeakRetained;
-  case Intrinsic::objc_moveWeak:
-    return ARCInstKind::MoveWeak;
-  case Intrinsic::objc_release:
-    return ARCInstKind::Release;
-  case Intrinsic::objc_retain:
-    return ARCInstKind::Retain;
-  case Intrinsic::objc_retainAutorelease:
-    return ARCInstKind::FusedRetainAutorelease;
-  case Intrinsic::objc_retainAutoreleaseReturnValue:
-    return ARCInstKind::FusedRetainAutoreleaseRV;
-  case Intrinsic::objc_retainAutoreleasedReturnValue:
-    return ARCInstKind::RetainRV;
-  case Intrinsic::objc_retainBlock:
-    return ARCInstKind::RetainBlock;
-  case Intrinsic::objc_storeStrong:
-    return ARCInstKind::StoreStrong;
-  case Intrinsic::objc_storeWeak:
-    return ARCInstKind::StoreWeak;
-  case Intrinsic::objc_clang_arc_use:
-    return ARCInstKind::IntrinsicUser;
-  case Intrinsic::objc_unsafeClaimAutoreleasedReturnValue:
-    return ARCInstKind::ClaimRV;
-  case Intrinsic::objc_retainedObject:
-    return ARCInstKind::NoopCast;
-  case Intrinsic::objc_unretainedObject:
-    return ARCInstKind::NoopCast;
-  case Intrinsic::objc_unretainedPointer:
-    return ARCInstKind::NoopCast;
-  case Intrinsic::objc_retain_autorelease:
-    return ARCInstKind::FusedRetainAutorelease;
-  case Intrinsic::objc_sync_enter:
-    return ARCInstKind::User;
-  case Intrinsic::objc_sync_exit:
-    return ARCInstKind::User;
-  case Intrinsic::objc_arc_annotation_topdown_bbstart:
-  case Intrinsic::objc_arc_annotation_topdown_bbend:
-  case Intrinsic::objc_arc_annotation_bottomup_bbstart:
-  case Intrinsic::objc_arc_annotation_bottomup_bbend:
-    // Ignore annotation calls. This is important to stop the
-    // optimizer from treating annotations as uses which would
-    // make the state of the pointers they are attempting to
-    // elucidate to be incorrect.
-    return ARCInstKind::None;
-  }
-}
-
-// A whitelist of intrinsics that we know do not use objc pointers or decrement
-// ref counts.
-static bool isInertIntrinsic(unsigned ID) {
-  // TODO: Make this into a covered switch.
-  switch (ID) {
-  case Intrinsic::returnaddress:
-  case Intrinsic::addressofreturnaddress:
-  case Intrinsic::frameaddress:
-  case Intrinsic::stacksave:
-  case Intrinsic::stackrestore:
-  case Intrinsic::vastart:
-  case Intrinsic::vacopy:
-  case Intrinsic::vaend:
-  case Intrinsic::objectsize:
-  case Intrinsic::prefetch:
-  case Intrinsic::stackprotector:
-  case Intrinsic::eh_return_i32:
-  case Intrinsic::eh_return_i64:
-  case Intrinsic::eh_typeid_for:
-  case Intrinsic::eh_dwarf_cfa:
-  case Intrinsic::eh_sjlj_lsda:
-  case Intrinsic::eh_sjlj_functioncontext:
-  case Intrinsic::init_trampoline:
-  case Intrinsic::adjust_trampoline:
-  case Intrinsic::lifetime_start:
-  case Intrinsic::lifetime_end:
-  case Intrinsic::invariant_start:
-  case Intrinsic::invariant_end:
-  // Don't let dbg info affect our results.
-  case Intrinsic::dbg_declare:
-  case Intrinsic::dbg_value:
-  case Intrinsic::dbg_label:
-    // Short cut: Some intrinsics obviously don't use ObjC pointers.
-    return true;
-  default:
-    return false;
-  }
-}
-
-// A whitelist of intrinsics that we know do not use objc pointers or decrement
-// ref counts.
-static bool isUseOnlyIntrinsic(unsigned ID) {
-  // We are conservative and even though intrinsics are unlikely to touch
-  // reference counts, we white list them for safety.
-  //
-  // TODO: Expand this into a covered switch. There is a lot more here.
-  switch (ID) {
-  case Intrinsic::memcpy:
-  case Intrinsic::memmove:
-  case Intrinsic::memset:
-    return true;
-  default:
-    return false;
-  }
-}
-
-/// Determine what kind of construct V is.
-ARCInstKind llvm::objcarc::GetARCInstKind(const Value *V) {
-  if (const Instruction *I = dyn_cast<Instruction>(V)) {
-    // Any instruction other than bitcast and gep with a pointer operand have a
-    // use of an objc pointer. Bitcasts, GEPs, Selects, PHIs transfer a pointer
-    // to a subsequent use, rather than using it themselves, in this sense.
-    // As a short cut, several other opcodes are known to have no pointer
-    // operands of interest. And ret is never followed by a release, so it's
-    // not interesting to examine.
-    switch (I->getOpcode()) {
-    case Instruction::Call: {
-      const CallInst *CI = cast<CallInst>(I);
-      // See if we have a function that we know something about.
-      if (const Function *F = CI->getCalledFunction()) {
-        ARCInstKind Class = GetFunctionClass(F);
-        if (Class != ARCInstKind::CallOrUser)
-          return Class;
-        Intrinsic::ID ID = F->getIntrinsicID();
-        if (isInertIntrinsic(ID))
-          return ARCInstKind::None;
-        if (isUseOnlyIntrinsic(ID))
-          return ARCInstKind::User;
-      }
-
-      // Otherwise, be conservative.
-      return GetCallSiteClass(CI);
-    }
-    case Instruction::Invoke:
-      // Otherwise, be conservative.
-      return GetCallSiteClass(cast<InvokeInst>(I));
-    case Instruction::BitCast:
-    case Instruction::GetElementPtr:
-    case Instruction::Select:
-    case Instruction::PHI:
-    case Instruction::Ret:
-    case Instruction::Br:
-    case Instruction::Switch:
-    case Instruction::IndirectBr:
-    case Instruction::Alloca:
-    case Instruction::VAArg:
-    case Instruction::Add:
-    case Instruction::FAdd:
-    case Instruction::Sub:
-    case Instruction::FSub:
-    case Instruction::Mul:
-    case Instruction::FMul:
-    case Instruction::SDiv:
-    case Instruction::UDiv:
-    case Instruction::FDiv:
-    case Instruction::SRem:
-    case Instruction::URem:
-    case Instruction::FRem:
-    case Instruction::Shl:
-    case Instruction::LShr:
-    case Instruction::AShr:
-    case Instruction::And:
-    case Instruction::Or:
-    case Instruction::Xor:
-    case Instruction::SExt:
-    case Instruction::ZExt:
-    case Instruction::Trunc:
-    case Instruction::IntToPtr:
-    case Instruction::FCmp:
-    case Instruction::FPTrunc:
-    case Instruction::FPExt:
-    case Instruction::FPToUI:
-    case Instruction::FPToSI:
-    case Instruction::UIToFP:
-    case Instruction::SIToFP:
-    case Instruction::InsertElement:
-    case Instruction::ExtractElement:
-    case Instruction::ShuffleVector:
-    case Instruction::ExtractValue:
-      break;
-    case Instruction::ICmp:
-      // Comparing a pointer with null, or any other constant, isn't an
-      // interesting use, because we don't care what the pointer points to, or
-      // about the values of any other dynamic reference-counted pointers.
-      if (IsPotentialRetainableObjPtr(I->getOperand(1)))
-        return ARCInstKind::User;
-      break;
-    default:
-      // For anything else, check all the operands.
-      // Note that this includes both operands of a Store: while the first
-      // operand isn't actually being dereferenced, it is being stored to
-      // memory where we can no longer track who might read it and dereference
-      // it, so we have to consider it potentially used.
-      for (User::const_op_iterator OI = I->op_begin(), OE = I->op_end();
-           OI != OE; ++OI)
-        if (IsPotentialRetainableObjPtr(*OI))
-          return ARCInstKind::User;
-    }
-  }
-
-  // Otherwise, it's totally inert for ARC purposes.
-  return ARCInstKind::None;
-}
-
-/// Test if the given class is a kind of user.
-bool llvm::objcarc::IsUser(ARCInstKind Class) {
-  switch (Class) {
-  case ARCInstKind::User:
-  case ARCInstKind::CallOrUser:
-  case ARCInstKind::IntrinsicUser:
-    return true;
-  case ARCInstKind::Retain:
-  case ARCInstKind::RetainRV:
-  case ARCInstKind::RetainBlock:
-  case ARCInstKind::Release:
-  case ARCInstKind::Autorelease:
-  case ARCInstKind::AutoreleaseRV:
-  case ARCInstKind::AutoreleasepoolPush:
-  case ARCInstKind::AutoreleasepoolPop:
-  case ARCInstKind::NoopCast:
-  case ARCInstKind::FusedRetainAutorelease:
-  case ARCInstKind::FusedRetainAutoreleaseRV:
-  case ARCInstKind::LoadWeakRetained:
-  case ARCInstKind::StoreWeak:
-  case ARCInstKind::InitWeak:
-  case ARCInstKind::LoadWeak:
-  case ARCInstKind::MoveWeak:
-  case ARCInstKind::CopyWeak:
-  case ARCInstKind::DestroyWeak:
-  case ARCInstKind::StoreStrong:
-  case ARCInstKind::Call:
-  case ARCInstKind::None:
-  case ARCInstKind::ClaimRV:
-    return false;
-  }
-  llvm_unreachable("covered switch isn't covered?");
-}
-
-/// Test if the given class is objc_retain or equivalent.
-bool llvm::objcarc::IsRetain(ARCInstKind Class) {
-  switch (Class) {
-  case ARCInstKind::Retain:
-  case ARCInstKind::RetainRV:
-    return true;
-  // I believe we treat retain block as not a retain since it can copy its
-  // block.
-  case ARCInstKind::RetainBlock:
-  case ARCInstKind::Release:
-  case ARCInstKind::Autorelease:
-  case ARCInstKind::AutoreleaseRV:
-  case ARCInstKind::AutoreleasepoolPush:
-  case ARCInstKind::AutoreleasepoolPop:
-  case ARCInstKind::NoopCast:
-  case ARCInstKind::FusedRetainAutorelease:
-  case ARCInstKind::FusedRetainAutoreleaseRV:
-  case ARCInstKind::LoadWeakRetained:
-  case ARCInstKind::StoreWeak:
-  case ARCInstKind::InitWeak:
-  case ARCInstKind::LoadWeak:
-  case ARCInstKind::MoveWeak:
-  case ARCInstKind::CopyWeak:
-  case ARCInstKind::DestroyWeak:
-  case ARCInstKind::StoreStrong:
-  case ARCInstKind::IntrinsicUser:
-  case ARCInstKind::CallOrUser:
-  case ARCInstKind::Call:
-  case ARCInstKind::User:
-  case ARCInstKind::None:
-  case ARCInstKind::ClaimRV:
-    return false;
-  }
-  llvm_unreachable("covered switch isn't covered?");
-}
-
-/// Test if the given class is objc_autorelease or equivalent.
-bool llvm::objcarc::IsAutorelease(ARCInstKind Class) {
-  switch (Class) {
-  case ARCInstKind::Autorelease:
-  case ARCInstKind::AutoreleaseRV:
-    return true;
-  case ARCInstKind::Retain:
-  case ARCInstKind::RetainRV:
-  case ARCInstKind::ClaimRV:
-  case ARCInstKind::RetainBlock:
-  case ARCInstKind::Release:
-  case ARCInstKind::AutoreleasepoolPush:
-  case ARCInstKind::AutoreleasepoolPop:
-  case ARCInstKind::NoopCast:
-  case ARCInstKind::FusedRetainAutorelease:
-  case ARCInstKind::FusedRetainAutoreleaseRV:
-  case ARCInstKind::LoadWeakRetained:
-  case ARCInstKind::StoreWeak:
-  case ARCInstKind::InitWeak:
-  case ARCInstKind::LoadWeak:
-  case ARCInstKind::MoveWeak:
-  case ARCInstKind::CopyWeak:
-  case ARCInstKind::DestroyWeak:
-  case ARCInstKind::StoreStrong:
-  case ARCInstKind::IntrinsicUser:
-  case ARCInstKind::CallOrUser:
-  case ARCInstKind::Call:
-  case ARCInstKind::User:
-  case ARCInstKind::None:
-    return false;
-  }
-  llvm_unreachable("covered switch isn't covered?");
-}
-
-/// Test if the given class represents instructions which return their
-/// argument verbatim.
-bool llvm::objcarc::IsForwarding(ARCInstKind Class) {
-  switch (Class) {
-  case ARCInstKind::Retain:
-  case ARCInstKind::RetainRV:
-  case ARCInstKind::ClaimRV:
-  case ARCInstKind::Autorelease:
-  case ARCInstKind::AutoreleaseRV:
-  case ARCInstKind::NoopCast:
-    return true;
-  case ARCInstKind::RetainBlock:
-  case ARCInstKind::Release:
-  case ARCInstKind::AutoreleasepoolPush:
-  case ARCInstKind::AutoreleasepoolPop:
-  case ARCInstKind::FusedRetainAutorelease:
-  case ARCInstKind::FusedRetainAutoreleaseRV:
-  case ARCInstKind::LoadWeakRetained:
-  case ARCInstKind::StoreWeak:
-  case ARCInstKind::InitWeak:
-  case ARCInstKind::LoadWeak:
-  case ARCInstKind::MoveWeak:
-  case ARCInstKind::CopyWeak:
-  case ARCInstKind::DestroyWeak:
-  case ARCInstKind::StoreStrong:
-  case ARCInstKind::IntrinsicUser:
-  case ARCInstKind::CallOrUser:
-  case ARCInstKind::Call:
-  case ARCInstKind::User:
-  case ARCInstKind::None:
-    return false;
-  }
-  llvm_unreachable("covered switch isn't covered?");
-}
-
-/// Test if the given class represents instructions which do nothing if
-/// passed a null pointer.
-bool llvm::objcarc::IsNoopOnNull(ARCInstKind Class) {
-  switch (Class) {
-  case ARCInstKind::Retain:
-  case ARCInstKind::RetainRV:
-  case ARCInstKind::ClaimRV:
-  case ARCInstKind::Release:
-  case ARCInstKind::Autorelease:
-  case ARCInstKind::AutoreleaseRV:
-  case ARCInstKind::RetainBlock:
-    return true;
-  case ARCInstKind::AutoreleasepoolPush:
-  case ARCInstKind::AutoreleasepoolPop:
-  case ARCInstKind::FusedRetainAutorelease:
-  case ARCInstKind::FusedRetainAutoreleaseRV:
-  case ARCInstKind::LoadWeakRetained:
-  case ARCInstKind::StoreWeak:
-  case ARCInstKind::InitWeak:
-  case ARCInstKind::LoadWeak:
-  case ARCInstKind::MoveWeak:
-  case ARCInstKind::CopyWeak:
-  case ARCInstKind::DestroyWeak:
-  case ARCInstKind::StoreStrong:
-  case ARCInstKind::IntrinsicUser:
-  case ARCInstKind::CallOrUser:
-  case ARCInstKind::Call:
-  case ARCInstKind::User:
-  case ARCInstKind::None:
-  case ARCInstKind::NoopCast:
-    return false;
-  }
-  llvm_unreachable("covered switch isn't covered?");
-}
-
-/// Test if the given class represents instructions which are always safe
-/// to mark with the "tail" keyword.
-bool llvm::objcarc::IsAlwaysTail(ARCInstKind Class) {
-  // ARCInstKind::RetainBlock may be given a stack argument.
-  switch (Class) {
-  case ARCInstKind::Retain:
-  case ARCInstKind::RetainRV:
-  case ARCInstKind::ClaimRV:
-  case ARCInstKind::AutoreleaseRV:
-    return true;
-  case ARCInstKind::Release:
-  case ARCInstKind::Autorelease:
-  case ARCInstKind::RetainBlock:
-  case ARCInstKind::AutoreleasepoolPush:
-  case ARCInstKind::AutoreleasepoolPop:
-  case ARCInstKind::FusedRetainAutorelease:
-  case ARCInstKind::FusedRetainAutoreleaseRV:
-  case ARCInstKind::LoadWeakRetained:
-  case ARCInstKind::StoreWeak:
-  case ARCInstKind::InitWeak:
-  case ARCInstKind::LoadWeak:
-  case ARCInstKind::MoveWeak:
-  case ARCInstKind::CopyWeak:
-  case ARCInstKind::DestroyWeak:
-  case ARCInstKind::StoreStrong:
-  case ARCInstKind::IntrinsicUser:
-  case ARCInstKind::CallOrUser:
-  case ARCInstKind::Call:
-  case ARCInstKind::User:
-  case ARCInstKind::None:
-  case ARCInstKind::NoopCast:
-    return false;
-  }
-  llvm_unreachable("covered switch isn't covered?");
-}
-
-/// Test if the given class represents instructions which are never safe
-/// to mark with the "tail" keyword.
-bool llvm::objcarc::IsNeverTail(ARCInstKind Class) {
-  /// It is never safe to tail call objc_autorelease since by tail calling
-  /// objc_autorelease: fast autoreleasing causing our object to be potentially
-  /// reclaimed from the autorelease pool which violates the semantics of
-  /// __autoreleasing types in ARC.
-  switch (Class) {
-  case ARCInstKind::Autorelease:
-    return true;
-  case ARCInstKind::Retain:
-  case ARCInstKind::RetainRV:
-  case ARCInstKind::ClaimRV:
-  case ARCInstKind::AutoreleaseRV:
-  case ARCInstKind::Release:
-  case ARCInstKind::RetainBlock:
-  case ARCInstKind::AutoreleasepoolPush:
-  case ARCInstKind::AutoreleasepoolPop:
-  case ARCInstKind::FusedRetainAutorelease:
-  case ARCInstKind::FusedRetainAutoreleaseRV:
-  case ARCInstKind::LoadWeakRetained:
-  case ARCInstKind::StoreWeak:
-  case ARCInstKind::InitWeak:
-  case ARCInstKind::LoadWeak:
-  case ARCInstKind::MoveWeak:
-  case ARCInstKind::CopyWeak:
-  case ARCInstKind::DestroyWeak:
-  case ARCInstKind::StoreStrong:
-  case ARCInstKind::IntrinsicUser:
-  case ARCInstKind::CallOrUser:
-  case ARCInstKind::Call:
-  case ARCInstKind::User:
-  case ARCInstKind::None:
-  case ARCInstKind::NoopCast:
-    return false;
-  }
-  llvm_unreachable("covered switch isn't covered?");
-}
-
-/// Test if the given class represents instructions which are always safe
-/// to mark with the nounwind attribute.
-bool llvm::objcarc::IsNoThrow(ARCInstKind Class) {
-  // objc_retainBlock is not nounwind because it calls user copy constructors
-  // which could theoretically throw.
-  switch (Class) {
-  case ARCInstKind::Retain:
-  case ARCInstKind::RetainRV:
-  case ARCInstKind::ClaimRV:
-  case ARCInstKind::Release:
-  case ARCInstKind::Autorelease:
-  case ARCInstKind::AutoreleaseRV:
-  case ARCInstKind::AutoreleasepoolPush:
-  case ARCInstKind::AutoreleasepoolPop:
-    return true;
-  case ARCInstKind::RetainBlock:
-  case ARCInstKind::FusedRetainAutorelease:
-  case ARCInstKind::FusedRetainAutoreleaseRV:
-  case ARCInstKind::LoadWeakRetained:
-  case ARCInstKind::StoreWeak:
-  case ARCInstKind::InitWeak:
-  case ARCInstKind::LoadWeak:
-  case ARCInstKind::MoveWeak:
-  case ARCInstKind::CopyWeak:
-  case ARCInstKind::DestroyWeak:
-  case ARCInstKind::StoreStrong:
-  case ARCInstKind::IntrinsicUser:
-  case ARCInstKind::CallOrUser:
-  case ARCInstKind::Call:
-  case ARCInstKind::User:
-  case ARCInstKind::None:
-  case ARCInstKind::NoopCast:
-    return false;
-  }
-  llvm_unreachable("covered switch isn't covered?");
-}
-
-/// Test whether the given instruction can autorelease any pointer or cause an
-/// autoreleasepool pop.
-///
-/// This means that it *could* interrupt the RV optimization.
-bool llvm::objcarc::CanInterruptRV(ARCInstKind Class) {
-  switch (Class) {
-  case ARCInstKind::AutoreleasepoolPop:
-  case ARCInstKind::CallOrUser:
-  case ARCInstKind::Call:
-  case ARCInstKind::Autorelease:
-  case ARCInstKind::AutoreleaseRV:
-  case ARCInstKind::FusedRetainAutorelease:
-  case ARCInstKind::FusedRetainAutoreleaseRV:
-    return true;
-  case ARCInstKind::Retain:
-  case ARCInstKind::RetainRV:
-  case ARCInstKind::ClaimRV:
-  case ARCInstKind::Release:
-  case ARCInstKind::AutoreleasepoolPush:
-  case ARCInstKind::RetainBlock:
-  case ARCInstKind::LoadWeakRetained:
-  case ARCInstKind::StoreWeak:
-  case ARCInstKind::InitWeak:
-  case ARCInstKind::LoadWeak:
-  case ARCInstKind::MoveWeak:
-  case ARCInstKind::CopyWeak:
-  case ARCInstKind::DestroyWeak:
-  case ARCInstKind::StoreStrong:
-  case ARCInstKind::IntrinsicUser:
-  case ARCInstKind::User:
-  case ARCInstKind::None:
-  case ARCInstKind::NoopCast:
-    return false;
-  }
-  llvm_unreachable("covered switch isn't covered?");
-}
-
-bool llvm::objcarc::CanDecrementRefCount(ARCInstKind Kind) {
-  switch (Kind) {
-  case ARCInstKind::Retain:
-  case ARCInstKind::RetainRV:
-  case ARCInstKind::Autorelease:
-  case ARCInstKind::AutoreleaseRV:
-  case ARCInstKind::NoopCast:
-  case ARCInstKind::FusedRetainAutorelease:
-  case ARCInstKind::FusedRetainAutoreleaseRV:
-  case ARCInstKind::IntrinsicUser:
-  case ARCInstKind::User:
-  case ARCInstKind::None:
-    return false;
-
-  // The cases below are conservative.
-
-  // RetainBlock can result in user defined copy constructors being called
-  // implying releases may occur.
-  case ARCInstKind::RetainBlock:
-  case ARCInstKind::Release:
-  case ARCInstKind::AutoreleasepoolPush:
-  case ARCInstKind::AutoreleasepoolPop:
-  case ARCInstKind::LoadWeakRetained:
-  case ARCInstKind::StoreWeak:
-  case ARCInstKind::InitWeak:
-  case ARCInstKind::LoadWeak:
-  case ARCInstKind::MoveWeak:
-  case ARCInstKind::CopyWeak:
-  case ARCInstKind::DestroyWeak:
-  case ARCInstKind::StoreStrong:
-  case ARCInstKind::CallOrUser:
-  case ARCInstKind::Call:
-  case ARCInstKind::ClaimRV:
-    return true;
-  }
-
-  llvm_unreachable("covered switch isn't covered?");
-}