[llvm] Use *Set::insert_range (NFC) (#138237)

Author: kazutakahirata

llvm/lib/CodeGen/LexicalScopes.cpp

@@ -287,8 +287,7 @@ void LexicalScopes::getMachineBasicBlocks(
     return;
 
   if (Scope == CurrentFnLexicalScope) {
-    for (const auto &MBB : *MF)
-      MBBs.insert(&MBB);
+    MBBs.insert_range(llvm::make_pointer_range(*MF));
     return;
   }
 

llvm/lib/Target/RISCV/RISCVVLOptimizer.cpp

@@ -1330,8 +1330,8 @@ RISCVVLOptimizer::checkUsers(const MachineInstr &MI) const {
         UserMI.getOperand(0).getSubReg() == RISCV::NoSubRegister &&
         UserMI.getOperand(1).getSubReg() == RISCV::NoSubRegister) {
       LLVM_DEBUG(dbgs() << "    Peeking through uses of COPY\n");
-      for (auto &CopyUse : MRI->use_operands(UserMI.getOperand(0).getReg()))
-        Worklist.insert(&CopyUse);
+      Worklist.insert_range(llvm::make_pointer_range(
+          MRI->use_operands(UserMI.getOperand(0).getReg())));
       continue;
     }
 
@@ -1340,8 +1340,8 @@ RISCVVLOptimizer::checkUsers(const MachineInstr &MI) const {
       if (!PHISeen.insert(&UserMI).second)
         continue;
       LLVM_DEBUG(dbgs() << "    Peeking through uses of PHI\n");
-      for (auto &PhiUse : MRI->use_operands(UserMI.getOperand(0).getReg()))
-        Worklist.insert(&PhiUse);
+      Worklist.insert_range(llvm::make_pointer_range(
+          MRI->use_operands(UserMI.getOperand(0).getReg())));
       continue;
     }
 

llvm/lib/Transforms/IPO/AttributorAttributes.cpp

@@ -626,8 +626,7 @@ static void followUsesInContext(AAType &AA, Attributor &A,
     if (const Instruction *UserI = dyn_cast<Instruction>(U->getUser())) {
       bool Found = Explorer.findInContextOf(UserI, EIt, EEnd);
       if (Found && AA.followUseInMBEC(A, U, UserI, State))
-        for (const Use &Us : UserI->uses())
-          Uses.insert(&Us);
+        Uses.insert_range(llvm::make_pointer_range(UserI->uses()));
     }
   }
 }

llvm/lib/Transforms/Utils/SimplifyCFG.cpp

@@ -7557,8 +7557,7 @@ bool SimplifyCFGOpt::simplifyDuplicateSwitchArms(SwitchInst *SI,
     if (Seen.insert(BB).second) {
       // Keep track of which PHIs we need as keys in PhiPredIVs below.
       for (BasicBlock *Succ : BI->successors())
-        for (PHINode &Phi : Succ->phis())
-          Phis.insert(&Phi);
+        Phis.insert_range(llvm::make_pointer_range(Succ->phis()));
       // Add the successor only if not previously visited.
       Cases.emplace_back(SwitchSuccWrapper{BB, &PhiPredIVs});
     }

llvm/tools/llvm-reduce/deltas/ReduceOperandsSkip.cpp

@@ -150,8 +150,7 @@ opportunities(Function &F,
       // Regardless whether referenced, add the function arguments as
       // replacement possibility with the goal of reducing the number of (used)
       // function arguments, possibly created by the operands-to-args.
-      for (Argument &Arg : F.args())
-        ReferencedVals.insert(&Arg);
+      ReferencedVals.insert_range(llvm::make_pointer_range(F.args()));
 
       // After all candidates have been added, it doesn't need to be a set
       // anymore.