[tools] Use *Set::insert_range (NFC) (llvm#133384)

We can use *Set::insert_range to replace "for" loop-based insertions.
In some cases, we can further fold insert_range into the set
declaration.

Author: kazutakahirata

llvm/tools/bugpoint/CrashDebugger.cpp

@@ -968,10 +968,7 @@ class ReduceCrashingNamedMDOps : public ListReducer<const MDNode *> {
 bool ReduceCrashingNamedMDOps::TestNamedMDOps(
     std::vector<const MDNode *> &NamedMDOps) {
   // Convert list to set for fast lookup...
-  SmallPtrSet<const MDNode *, 32> OldMDNodeOps;
-  for (unsigned i = 0, e = NamedMDOps.size(); i != e; ++i) {
-    OldMDNodeOps.insert(NamedMDOps[i]);
-  }
+  SmallPtrSet<const MDNode *, 32> OldMDNodeOps(llvm::from_range, NamedMDOps);
 
   outs() << "Checking for crash with only " << OldMDNodeOps.size();
   if (OldMDNodeOps.size() == 1)

llvm/tools/llvm-lto/llvm-lto.cpp

@@ -1090,9 +1090,7 @@ int main(int argc, char **argv) {
   CodeGen.setTargetOptions(Options);
   CodeGen.setShouldRestoreGlobalsLinkage(RestoreGlobalsLinkage);
 
-  StringSet<MallocAllocator> DSOSymbolsSet;
-  for (unsigned i = 0; i < DSOSymbols.size(); ++i)
-    DSOSymbolsSet.insert(DSOSymbols[i]);
+  StringSet<MallocAllocator> DSOSymbolsSet(llvm::from_range, DSOSymbols);
 
   std::vector<std::string> KeptDSOSyms;
 

llvm/tools/llvm-objdump/llvm-objdump.cpp

@@ -2073,8 +2073,7 @@ disassembleObject(ObjectFile &Obj, const ObjectFile &DbgObj,
       if (Start < SectionAddr || StopAddress <= Start)
         continue;
 
-      for (size_t i = 0; i < SymbolsHere.size(); ++i)
-        FoundDisasmSymbolSet.insert(SymNamesHere[i]);
+      FoundDisasmSymbolSet.insert_range(SymNamesHere);
 
       // The end is the section end, the beginning of the next symbol, or
       // --stop-address.