[NFC][DebugInfo] Switch more call-sites to using iterator-insertion (#124283)

jmorse · web-flow · commit 34b139594aa2 · 2025-01-27T16:44:14.000Z
To finalise the "RemoveDIs" work removing debug intrinsics, we're
updating call sites that insert instructions to use iterators instead.
This set of changes are those where it's not immediately obvious that
just calling getIterator to fetch an iterator is correct, and one or two
places where more than one line needs to change.

Overall the same rule holds though: iterators generated for the start of
a block such as getFirstNonPHIIt need to be passed into insert/move
methods without being unwrapped/rewrapped, everything else can use
getIterator.
diff --git a/llvm/include/llvm/Transforms/Coroutines/CoroInstr.h b/llvm/include/llvm/Transforms/Coroutines/CoroInstr.h
@@ -170,7 +170,7 @@ class CoroIdInst : public AnyCoroIdInst {
       Inst->eraseFromParent();
       return;
     }
-    Inst->moveBefore(getCoroBegin()->getNextNode());
+    Inst->moveBefore(std::next(getCoroBegin()->getIterator()));
   }
 
   // Info argument of coro.id is
diff --git a/llvm/lib/Frontend/OpenMP/OMPIRBuilder.cpp b/llvm/lib/Frontend/OpenMP/OMPIRBuilder.cpp
@@ -678,7 +678,7 @@ void OpenMPIRBuilder::initialize() { initializeTypes(M); }
 static void raiseUserConstantDataAllocasToEntryBlock(IRBuilderBase &Builder,
                                                      Function *Function) {
   BasicBlock &EntryBlock = Function->getEntryBlock();
-  Instruction *MoveLocInst = EntryBlock.getFirstNonPHI();
+  BasicBlock::iterator MoveLocInst = EntryBlock.getFirstNonPHIIt();
 
   // Loop over blocks looking for constant allocas, skipping the entry block
   // as any allocas there are already in the desired location.
@@ -6918,7 +6918,7 @@ static Expected<Function *> createOutlinedFunction(
   Builder.CreateRetVoid();
 
   // New Alloca IP at entry point of created device function.
-  Builder.SetInsertPoint(EntryBB->getFirstNonPHI());
+  Builder.SetInsertPoint(EntryBB->getFirstNonPHIIt());
   auto AllocaIP = Builder.saveIP();
 
   Builder.SetInsertPoint(UserCodeEntryBB->getFirstNonPHIOrDbg());
diff --git a/llvm/lib/IR/BasicBlock.cpp b/llvm/lib/IR/BasicBlock.cpp
@@ -555,7 +555,7 @@ void BasicBlock::removePredecessor(BasicBlock *Pred,
 }
 
 bool BasicBlock::canSplitPredecessors() const {
-  const Instruction *FirstNonPHI = getFirstNonPHI();
+  const_iterator FirstNonPHI = getFirstNonPHIIt();
   if (isa<LandingPadInst>(FirstNonPHI))
     return true;
   // This is perhaps a little conservative because constructs like
@@ -687,11 +687,11 @@ void BasicBlock::replaceSuccessorsPhiUsesWith(BasicBlock *New) {
 }
 
 bool BasicBlock::isLandingPad() const {
-  return isa<LandingPadInst>(getFirstNonPHI());
+  return isa<LandingPadInst>(getFirstNonPHIIt());
 }
 
 const LandingPadInst *BasicBlock::getLandingPadInst() const {
-  return dyn_cast<LandingPadInst>(getFirstNonPHI());
+  return dyn_cast<LandingPadInst>(getFirstNonPHIIt());
 }
 
 std::optional<uint64_t> BasicBlock::getIrrLoopHeaderWeight() const {
diff --git a/llvm/lib/Target/Hexagon/HexagonOptimizeSZextends.cpp b/llvm/lib/Target/Hexagon/HexagonOptimizeSZextends.cpp
@@ -81,7 +81,7 @@ bool HexagonOptimizeSZextends::runOnFunction(Function &F) {
             assert (EVT::getEVT(SI->getType()) ==
                     (EVT::getEVT(Use->getType())));
             Use->replaceAllUsesWith(SI);
-            Instruction* First = &F.getEntryBlock().front();
+            BasicBlock::iterator First = F.getEntryBlock().begin();
             SI->insertBefore(First);
             Use->eraseFromParent();
           }
diff --git a/llvm/lib/Transforms/Instrumentation/AddressSanitizer.cpp b/llvm/lib/Transforms/Instrumentation/AddressSanitizer.cpp
@@ -3414,7 +3414,7 @@ void FunctionStackPoisoner::processStaticAllocas() {
   assert(InsBeforeB == &F.getEntryBlock());
   for (auto *AI : StaticAllocasToMoveUp)
     if (AI->getParent() == InsBeforeB)
-      AI->moveBefore(InsBefore);
+      AI->moveBefore(InsBefore->getIterator());
 
   // Move stores of arguments into entry-block allocas as well. This prevents
   // extra stack slots from being generated (to house the argument values until
@@ -3423,10 +3423,11 @@ void FunctionStackPoisoner::processStaticAllocas() {
   SmallVector<Instruction *, 8> ArgInitInsts;
   findStoresToUninstrumentedArgAllocas(ASan, *InsBefore, ArgInitInsts);
   for (Instruction *ArgInitInst : ArgInitInsts)
-    ArgInitInst->moveBefore(InsBefore);
+    ArgInitInst->moveBefore(InsBefore->getIterator());
 
   // If we have a call to llvm.localescape, keep it in the entry block.
-  if (LocalEscapeCall) LocalEscapeCall->moveBefore(InsBefore);
+  if (LocalEscapeCall)
+    LocalEscapeCall->moveBefore(InsBefore->getIterator());
 
   SmallVector<ASanStackVariableDescription, 16> SVD;
   SVD.reserve(AllocaVec.size());
diff --git a/llvm/lib/Transforms/Scalar/CallSiteSplitting.cpp b/llvm/lib/Transforms/Scalar/CallSiteSplitting.cpp
@@ -218,8 +218,8 @@ static bool canSplitCallSite(CallBase &CB, TargetTransformInfo &TTI) {
   return true;
 }
 
-static Instruction *cloneInstForMustTail(Instruction *I, Instruction *Before,
-                                         Value *V) {
+static Instruction *
+cloneInstForMustTail(Instruction *I, BasicBlock::iterator Before, Value *V) {
   Instruction *Copy = I->clone();
   Copy->setName(I->getName());
   Copy->insertBefore(Before);
@@ -251,8 +251,8 @@ static void copyMustTailReturn(BasicBlock *SplitBB, Instruction *CI,
   Instruction *TI = SplitBB->getTerminator();
   Value *V = NewCI;
   if (BCI)
-    V = cloneInstForMustTail(BCI, TI, V);
-  cloneInstForMustTail(RI, TI, IsVoid ? nullptr : V);
+    V = cloneInstForMustTail(BCI, TI->getIterator(), V);
+  cloneInstForMustTail(RI, TI->getIterator(), IsVoid ? nullptr : V);
 
   // FIXME: remove TI here, `DuplicateInstructionsInSplitBetween` has a bug
   // that prevents doing this now.
diff --git a/llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp b/llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp
@@ -6176,11 +6176,11 @@ LSRInstance::LSRInstance(Loop *L, IVUsers &IU, ScalarEvolution &SE,
     // CatchSwitchInst.  Because the CatchSwitchInst cannot be split, there is
     // no good place to stick any instructions.
     if (auto *PN = dyn_cast<PHINode>(U.getUser())) {
-       auto *FirstNonPHI = PN->getParent()->getFirstNonPHI();
+       auto FirstNonPHI = PN->getParent()->getFirstNonPHIIt();
        if (isa<FuncletPadInst>(FirstNonPHI) ||
            isa<CatchSwitchInst>(FirstNonPHI))
          for (BasicBlock *PredBB : PN->blocks())
-           if (isa<CatchSwitchInst>(PredBB->getFirstNonPHI()))
+           if (isa<CatchSwitchInst>(PredBB->getFirstNonPHIIt()))
              return;
     }
   }
diff --git a/llvm/lib/Transforms/Scalar/MergedLoadStoreMotion.cpp b/llvm/lib/Transforms/Scalar/MergedLoadStoreMotion.cpp
@@ -281,7 +281,7 @@ void MergedLoadStoreMotion::sinkStoresAndGEPs(BasicBlock *BB, StoreInst *S0,
     auto *GEP0 = cast<GetElementPtrInst>(Ptr0);
     auto *GEP1 = cast<GetElementPtrInst>(Ptr1);
     Instruction *GEPNew = GEP0->clone();
-    GEPNew->insertBefore(SNew);
+    GEPNew->insertBefore(SNew->getIterator());
     GEPNew->applyMergedLocation(GEP0->getDebugLoc(), GEP1->getDebugLoc());
     SNew->setOperand(1, GEPNew);
     GEP0->replaceAllUsesWith(GEPNew);
diff --git a/llvm/lib/Transforms/Scalar/RewriteStatepointsForGC.cpp b/llvm/lib/Transforms/Scalar/RewriteStatepointsForGC.cpp
@@ -1371,7 +1371,7 @@ static void recomputeLiveInValues(
 // and inserts them before "InsertBefore". Returns rematerialized value
 // which should be used after statepoint.
 static Instruction *rematerializeChain(ArrayRef<Instruction *> ChainToBase,
-                                       Instruction *InsertBefore,
+                                       BasicBlock::iterator InsertBefore,
                                        Value *RootOfChain,
                                        Value *AlternateLiveBase) {
   Instruction *LastClonedValue = nullptr;
@@ -2185,16 +2185,16 @@ static void relocationViaAlloca(
         // InvokeInst is a terminator so the store need to be inserted into its
         // normal destination block.
         BasicBlock *NormalDest = Invoke->getNormalDest();
-        Store->insertBefore(NormalDest->getFirstNonPHI());
+        Store->insertBefore(NormalDest->getFirstNonPHIIt());
       } else {
         assert(!Inst->isTerminator() &&
                "The only terminator that can produce a value is "
                "InvokeInst which is handled above.");
-        Store->insertAfter(Inst);
+        Store->insertAfter(Inst->getIterator());
       }
     } else {
       assert(isa<Argument>(Def));
-      Store->insertAfter(cast<Instruction>(Alloca));
+      Store->insertAfter(cast<Instruction>(Alloca)->getIterator());
     }
   }
 
@@ -2499,8 +2499,9 @@ static void rematerializeLiveValuesAtUses(
     //   statepoint between uses in the block.
     while (!Cand->user_empty()) {
       Instruction *UserI = cast<Instruction>(*Cand->user_begin());
-      Instruction *RematChain = rematerializeChain(
-          Record.ChainToBase, UserI, Record.RootOfChain, PointerToBase[Cand]);
+      Instruction *RematChain =
+          rematerializeChain(Record.ChainToBase, UserI->getIterator(),
+                             Record.RootOfChain, PointerToBase[Cand]);
       UserI->replaceUsesOfWith(Cand, RematChain);
       PointerToBase[RematChain] = PointerToBase[Cand];
     }
@@ -2573,16 +2574,16 @@ static void rematerializeLiveValues(CallBase *Call,
       Instruction *InsertBefore = Call->getNextNode();
       assert(InsertBefore);
       Instruction *RematerializedValue =
-          rematerializeChain(Record.ChainToBase, InsertBefore,
+          rematerializeChain(Record.ChainToBase, InsertBefore->getIterator(),
                              Record.RootOfChain, PointerToBase[LiveValue]);
       Info.RematerializedValues[RematerializedValue] = LiveValue;
     } else {
       auto *Invoke = cast<InvokeInst>(Call);
 
-      Instruction *NormalInsertBefore =
-          &*Invoke->getNormalDest()->getFirstInsertionPt();
-      Instruction *UnwindInsertBefore =
-          &*Invoke->getUnwindDest()->getFirstInsertionPt();
+      BasicBlock::iterator NormalInsertBefore =
+          Invoke->getNormalDest()->getFirstInsertionPt();
+      BasicBlock::iterator UnwindInsertBefore =
+          Invoke->getUnwindDest()->getFirstInsertionPt();
 
       Instruction *NormalRematerializedValue =
           rematerializeChain(Record.ChainToBase, NormalInsertBefore,
@@ -3131,7 +3132,7 @@ bool RewriteStatepointsForGC::runOnFunction(Function &F, DominatorTree &DT,
       // most instructions without side effects or memory access.
       if (isa<ICmpInst>(Cond) && Cond->hasOneUse()) {
         MadeChange = true;
-        Cond->moveBefore(TI);
+        Cond->moveBefore(TI->getIterator());
       }
   }
 
diff --git a/llvm/lib/Transforms/Scalar/SROA.cpp b/llvm/lib/Transforms/Scalar/SROA.cpp
@@ -480,7 +480,7 @@ static void migrateDebugInfo(AllocaInst *OldAlloca, bool IsSplit,
     // noted as slightly offset (in code) from the store. In practice this
     // should have little effect on the debugging experience due to the fact
     // that all the split stores should get the same line number.
-    NewAssign->moveBefore(DbgAssign);
+    NewAssign->moveBefore(DbgAssign->getIterator());
 
     NewAssign->setDebugLoc(DbgAssign->getDebugLoc());
     LLVM_DEBUG(dbgs() << "Created new assign: " << *NewAssign << "\n");
@@ -1843,7 +1843,7 @@ static void rewriteMemOpOfSelect(SelectInst &SI, T &I,
       CondMemOp.dropUBImplyingAttrsAndMetadata();
       ++NumLoadsSpeculated;
     }
-    CondMemOp.insertBefore(NewMemOpBB->getTerminator());
+    CondMemOp.insertBefore(NewMemOpBB->getTerminator()->getIterator());
     Value *Ptr = SI.getOperand(1 + SuccIdx);
     CondMemOp.setOperand(I.getPointerOperandIndex(), Ptr);
     if (isa<LoadInst>(I)) {
diff --git a/llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp b/llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp
@@ -3303,8 +3303,8 @@ static bool isSafeForNoNTrivialUnswitching(Loop &L, LoopInfo &LI) {
   // FIXME: We should teach SplitBlock to handle this and remove this
   // restriction.
   for (auto *ExitBB : ExitBlocks) {
-    auto *I = ExitBB->getFirstNonPHI();
-    if (isa<CleanupPadInst>(I) || isa<CatchSwitchInst>(I)) {
+    auto It = ExitBB->getFirstNonPHIIt();
+    if (isa<CleanupPadInst>(It) || isa<CatchSwitchInst>(It)) {
       LLVM_DEBUG(dbgs() << "Cannot unswitch because of cleanuppad/catchswitch "
                            "in exit block\n");
       return false;
diff --git a/llvm/lib/Transforms/Utils/AssumeBundleBuilder.cpp b/llvm/lib/Transforms/Utils/AssumeBundleBuilder.cpp
@@ -474,9 +474,9 @@ struct AssumeSimplify {
     AssumeBuilderState Builder(F.getParent());
 
     /// For now it is initialized to the best value it could have
-    Instruction *InsertPt = BB->getFirstNonPHI();
+    BasicBlock::iterator InsertPt = BB->getFirstNonPHIIt();
     if (isa<LandingPadInst>(InsertPt))
-      InsertPt = InsertPt->getNextNode();
+      InsertPt = std::next(InsertPt);
     for (IntrinsicInst *I : make_range(Begin, End)) {
       CleanupToDo.insert(I);
       for (CallInst::BundleOpInfo &BOI : I->bundle_op_infos()) {
@@ -487,8 +487,8 @@ struct AssumeSimplify {
         Builder.addKnowledge(RK);
         if (auto *I = dyn_cast_or_null<Instruction>(RK.WasOn))
           if (I->getParent() == InsertPt->getParent() &&
-              (InsertPt->comesBefore(I) || InsertPt == I))
-            InsertPt = I->getNextNode();
+              (InsertPt->comesBefore(I) || &*InsertPt == I))
+            InsertPt = I->getNextNode()->getIterator();
       }
     }
 
@@ -498,7 +498,7 @@ struct AssumeSimplify {
       for (auto It = (*Begin)->getIterator(), E = InsertPt->getIterator();
            It != E; --It)
         if (!isGuaranteedToTransferExecutionToSuccessor(&*It)) {
-          InsertPt = It->getNextNode();
+          InsertPt = std::next(It);
           break;
         }
     auto *MergedAssume = Builder.build();
diff --git a/llvm/lib/Transforms/Utils/BasicBlockUtils.cpp b/llvm/lib/Transforms/Utils/BasicBlockUtils.cpp
@@ -836,7 +836,7 @@ BasicBlock *llvm::ehAwareSplitEdge(BasicBlock *BB, BasicBlock *Succ,
                                    const CriticalEdgeSplittingOptions &Options,
                                    const Twine &BBName) {
 
-  auto *PadInst = Succ->getFirstNonPHI();
+  auto PadInst = Succ->getFirstNonPHIIt();
   if (!LandingPadReplacement && !PadInst->isEHPad())
     return SplitEdge(BB, Succ, Options.DT, Options.LI, Options.MSSAU, BBName);
 
@@ -981,7 +981,7 @@ BasicBlock *llvm::ehAwareSplitEdge(BasicBlock *BB, BasicBlock *Succ,
 void llvm::createPHIsForSplitLoopExit(ArrayRef<BasicBlock *> Preds,
                                       BasicBlock *SplitBB, BasicBlock *DestBB) {
   // SplitBB shouldn't have anything non-trivial in it yet.
-  assert((SplitBB->getFirstNonPHI() == SplitBB->getTerminator() ||
+  assert((&*SplitBB->getFirstNonPHIIt() == SplitBB->getTerminator() ||
           SplitBB->isLandingPad()) &&
          "SplitBB has non-PHI nodes!");
 
@@ -1450,7 +1450,7 @@ static void SplitLandingPadPredecessorsImpl(
 
   // The new block unconditionally branches to the old block.
   BranchInst *BI1 = BranchInst::Create(OrigBB, NewBB1);
-  BI1->setDebugLoc(OrigBB->getFirstNonPHI()->getDebugLoc());
+  BI1->setDebugLoc(OrigBB->getFirstNonPHIIt()->getDebugLoc());
 
   // Move the edges from Preds to point to NewBB1 instead of OrigBB.
   for (BasicBlock *Pred : Preds) {
@@ -1491,7 +1491,7 @@ static void SplitLandingPadPredecessorsImpl(
 
     // The new block unconditionally branches to the old block.
     BranchInst *BI2 = BranchInst::Create(OrigBB, NewBB2);
-    BI2->setDebugLoc(OrigBB->getFirstNonPHI()->getDebugLoc());
+    BI2->setDebugLoc(OrigBB->getFirstNonPHIIt()->getDebugLoc());
 
     // Move the remaining edges from OrigBB to point to NewBB2.
     for (BasicBlock *NewBB2Pred : NewBB2Preds)
diff --git a/llvm/lib/Transforms/Utils/LoopUnrollAndJam.cpp b/llvm/lib/Transforms/Utils/LoopUnrollAndJam.cpp
@@ -165,7 +165,7 @@ static bool processHeaderPhiOperands(BasicBlock *Header, BasicBlock *Latch,
 // Move the phi operands of Header from Latch out of AftBlocks to InsertLoc.
 static void moveHeaderPhiOperandsToForeBlocks(BasicBlock *Header,
                                               BasicBlock *Latch,
-                                              Instruction *InsertLoc,
+                                              BasicBlock::iterator InsertLoc,
                                               BasicBlockSet &AftBlocks) {
   // We need to ensure we move the instructions in the correct order,
   // starting with the earliest required instruction and moving forward.
@@ -329,7 +329,8 @@ llvm::UnrollAndJamLoop(Loop *L, unsigned Count, unsigned TripCount,
 
   // Move any instructions from fore phi operands from AftBlocks into Fore.
   moveHeaderPhiOperandsToForeBlocks(
-      Header, LatchBlock, ForeBlocksLast[0]->getTerminator(), AftBlocks);
+      Header, LatchBlock, ForeBlocksLast[0]->getTerminator()->getIterator(),
+      AftBlocks);
 
   // The current on-the-fly SSA update requires blocks to be processed in
   // reverse postorder so that LastValueMap contains the correct value at each
diff --git a/llvm/lib/Transforms/Utils/SimplifyCFG.cpp b/llvm/lib/Transforms/Utils/SimplifyCFG.cpp
@@ -5262,8 +5262,8 @@ bool SimplifyCFGOpt::simplifyBranchOnICmpChain(BranchInst *BI,
 bool SimplifyCFGOpt::simplifyResume(ResumeInst *RI, IRBuilder<> &Builder) {
   if (isa<PHINode>(RI->getValue()))
     return simplifyCommonResume(RI);
-  else if (isa<LandingPadInst>(RI->getParent()->getFirstNonPHI()) &&
-           RI->getValue() == RI->getParent()->getFirstNonPHI())
+  else if (isa<LandingPadInst>(RI->getParent()->getFirstNonPHIIt()) &&
+           RI->getValue() == &*RI->getParent()->getFirstNonPHIIt())
     // The resume must unwind the exception that caused control to branch here.
     return simplifySingleResume(RI);
 
@@ -5297,8 +5297,8 @@ bool SimplifyCFGOpt::simplifyCommonResume(ResumeInst *RI) {
 
   // Check that there are no other instructions except for debug and lifetime
   // intrinsics between the phi's and resume instruction.
-  if (!isCleanupBlockEmpty(
-          make_range(RI->getParent()->getFirstNonPHI(), BB->getTerminator())))
+  if (!isCleanupBlockEmpty(make_range(RI->getParent()->getFirstNonPHIIt(),
+                                      BB->getTerminator()->getIterator())))
     return false;
 
   SmallSetVector<BasicBlock *, 4> TrivialUnwindBlocks;
@@ -5315,7 +5315,7 @@ bool SimplifyCFGOpt::simplifyCommonResume(ResumeInst *RI) {
     if (IncomingBB->getUniqueSuccessor() != BB)
       continue;
 
-    auto *LandingPad = dyn_cast<LandingPadInst>(IncomingBB->getFirstNonPHI());
+    auto *LandingPad = dyn_cast<LandingPadInst>(IncomingBB->getFirstNonPHIIt());
     // Not the landing pad that caused the control to branch here.
     if (IncomingValue != LandingPad)
       continue;
@@ -5364,7 +5364,7 @@ bool SimplifyCFGOpt::simplifyCommonResume(ResumeInst *RI) {
 // Simplify resume that is only used by a single (non-phi) landing pad.
 bool SimplifyCFGOpt::simplifySingleResume(ResumeInst *RI) {
   BasicBlock *BB = RI->getParent();
-  auto *LPInst = cast<LandingPadInst>(BB->getFirstNonPHI());
+  auto *LPInst = cast<LandingPadInst>(BB->getFirstNonPHIIt());
   assert(RI->getValue() == LPInst &&
          "Resume must unwind the exception that caused control to here");
 
@@ -5412,7 +5412,6 @@ static bool removeEmptyCleanup(CleanupReturnInst *RI, DomTreeUpdater *DTU) {
   // If the cleanup return we are simplifying unwinds to the caller, this will
   // set UnwindDest to nullptr.
   BasicBlock *UnwindDest = RI->getUnwindDest();
-  Instruction *DestEHPad = UnwindDest ? UnwindDest->getFirstNonPHI() : nullptr;
 
   // We're about to remove BB from the control flow.  Before we do, sink any
   // PHINodes into the unwind destination.  Doing this before changing the
@@ -5449,7 +5448,7 @@ static bool removeEmptyCleanup(CleanupReturnInst *RI, DomTreeUpdater *DTU) {
     }
 
     // Sink any remaining PHI nodes directly into UnwindDest.
-    Instruction *InsertPt = DestEHPad;
+    BasicBlock::iterator InsertPt = UnwindDest->getFirstNonPHIIt();
     for (PHINode &PN : make_early_inc_range(BB->phis())) {
       if (PN.use_empty() || !PN.isUsedOutsideOfBlock(BB))
         // If the PHI node has no uses or all of its uses are in this basic
diff --git a/llvm/lib/Transforms/Vectorize/VPlan.cpp b/llvm/lib/Transforms/Vectorize/VPlan.cpp
@@ -1024,7 +1024,7 @@ void VPlan::execute(VPTransformState *State) {
       // Move the last step to the end of the latch block. This ensures
       // consistent placement of all induction updates.
       Instruction *Inc = cast<Instruction>(Phi->getIncomingValue(1));
-      Inc->moveBefore(VectorLatchBB->getTerminator()->getPrevNode());
+      Inc->moveBefore(std::prev(VectorLatchBB->getTerminator()->getIterator()));
 
       // Use the steps for the last part as backedge value for the induction.
       if (auto *IV = dyn_cast<VPWidenIntOrFpInductionRecipe>(&R))

Original file line number	Diff line number	Diff line change
`@@ -170,7 +170,7 @@ class CoroIdInst : public AnyCoroIdInst {`
`170`	`170`	`Inst->eraseFromParent();`
`171`	`171`	`return;`
`172`	`172`	`}`
`173`		`- Inst->moveBefore(getCoroBegin()->getNextNode());`
	`173`	`+ Inst->moveBefore(std::next(getCoroBegin()->getIterator()));`
`174`	`174`	`}`
`175`	`175`
`176`	`176`	`// Info argument of coro.id is`
Original file line number	Diff line number	Diff line change
`@@ -555,7 +555,7 @@ void BasicBlock::removePredecessor(BasicBlock *Pred,`
`555`	`555`	`}`
`556`	`556`
`557`	`557`	`bool BasicBlock::canSplitPredecessors() const {`
`558`		`- const Instruction *FirstNonPHI = getFirstNonPHI();`
	`558`	`+ const_iterator FirstNonPHI = getFirstNonPHIIt();`
`559`	`559`	`if (isa<LandingPadInst>(FirstNonPHI))`
`560`	`560`	`return true;`
`561`	`561`	`// This is perhaps a little conservative because constructs like`
`@@ -687,11 +687,11 @@ void BasicBlock::replaceSuccessorsPhiUsesWith(BasicBlock *New) {`
`687`	`687`	`}`
`688`	`688`
`689`	`689`	`bool BasicBlock::isLandingPad() const {`
`690`		`- return isa<LandingPadInst>(getFirstNonPHI());`
	`690`	`+ return isa<LandingPadInst>(getFirstNonPHIIt());`
`691`	`691`	`}`
`692`	`692`
`693`	`693`	`const LandingPadInst *BasicBlock::getLandingPadInst() const {`
`694`		`- return dyn_cast<LandingPadInst>(getFirstNonPHI());`
	`694`	`+ return dyn_cast<LandingPadInst>(getFirstNonPHIIt());`
`695`	`695`	`}`
`696`	`696`
`697`	`697`	`std::optional<uint64_t> BasicBlock::getIrrLoopHeaderWeight() const {`
Original file line number	Diff line number	Diff line change
`@@ -81,7 +81,7 @@ bool HexagonOptimizeSZextends::runOnFunction(Function &F) {`
`81`	`81`	`assert (EVT::getEVT(SI->getType()) ==`
`82`	`82`	`(EVT::getEVT(Use->getType())));`
`83`	`83`	`Use->replaceAllUsesWith(SI);`
`84`		`- Instruction* First = &F.getEntryBlock().front();`
	`84`	`+ BasicBlock::iterator First = F.getEntryBlock().begin();`
`85`	`85`	`SI->insertBefore(First);`
`86`	`86`	`Use->eraseFromParent();`
`87`	`87`	`}`
Original file line number	Diff line number	Diff line change
`@@ -6176,11 +6176,11 @@ LSRInstance::LSRInstance(Loop *L, IVUsers &IU, ScalarEvolution &SE,`
`6176`	`6176`	`// CatchSwitchInst. Because the CatchSwitchInst cannot be split, there is`
`6177`	`6177`	`// no good place to stick any instructions.`
`6178`	`6178`	`if (auto *PN = dyn_cast<PHINode>(U.getUser())) {`
`6179`		`- auto *FirstNonPHI = PN->getParent()->getFirstNonPHI();`
	`6179`	`+ auto FirstNonPHI = PN->getParent()->getFirstNonPHIIt();`
`6180`	`6180`	`if (isa<FuncletPadInst>(FirstNonPHI) \|\|`
`6181`	`6181`	`isa<CatchSwitchInst>(FirstNonPHI))`
`6182`	`6182`	`for (BasicBlock *PredBB : PN->blocks())`
`6183`		`- if (isa<CatchSwitchInst>(PredBB->getFirstNonPHI()))`
	`6183`	`+ if (isa<CatchSwitchInst>(PredBB->getFirstNonPHIIt()))`
`6184`	`6184`	`return;`
`6185`	`6185`	`}`
`6186`	`6186`	`}`