[Support] Use range-based for loops (NFC) (#97657)

Author: kazutakahirata

llvm/lib/Support/CommandLine.cpp

@@ -1733,9 +1733,9 @@ bool CommandLineParser::ParseCommandLineOptions(int argc,
   } else if (!ConsumeAfterOpt) {
     // Positional args have already been handled if ConsumeAfter is specified.
     unsigned ValNo = 0, NumVals = static_cast<unsigned>(PositionalVals.size());
-    for (size_t i = 0, e = PositionalOpts.size(); i != e; ++i) {
-      if (RequiresValue(PositionalOpts[i])) {
-        ProvidePositionalOption(PositionalOpts[i], PositionalVals[ValNo].first,
+    for (Option *Opt : PositionalOpts) {
+      if (RequiresValue(Opt)) {
+        ProvidePositionalOption(Opt, PositionalVals[ValNo].first,
                                 PositionalVals[ValNo].second);
         ValNo++;
         --NumPositionalRequired; // We fulfilled our duty...
@@ -1745,16 +1745,15 @@ bool CommandLineParser::ParseCommandLineOptions(int argc,
       // do not give it values that others need.  'Done' controls whether the
       // option even _WANTS_ any more.
       //
-      bool Done = PositionalOpts[i]->getNumOccurrencesFlag() == cl::Required;
+      bool Done = Opt->getNumOccurrencesFlag() == cl::Required;
       while (NumVals - ValNo > NumPositionalRequired && !Done) {
-        switch (PositionalOpts[i]->getNumOccurrencesFlag()) {
+        switch (Opt->getNumOccurrencesFlag()) {
         case cl::Optional:
           Done = true; // Optional arguments want _at most_ one value
           [[fallthrough]];
         case cl::ZeroOrMore: // Zero or more will take all they can get...
         case cl::OneOrMore:  // One or more will take all they can get...
-          ProvidePositionalOption(PositionalOpts[i],
-                                  PositionalVals[ValNo].first,
+          ProvidePositionalOption(Opt, PositionalVals[ValNo].first,
                                   PositionalVals[ValNo].second);
           ValNo++;
           break;
@@ -1767,11 +1766,10 @@ bool CommandLineParser::ParseCommandLineOptions(int argc,
   } else {
     assert(ConsumeAfterOpt && NumPositionalRequired <= PositionalVals.size());
     unsigned ValNo = 0;
-    for (size_t J = 0, E = PositionalOpts.size(); J != E; ++J)
-      if (RequiresValue(PositionalOpts[J])) {
-        ErrorParsing |= ProvidePositionalOption(PositionalOpts[J],
-                                                PositionalVals[ValNo].first,
-                                                PositionalVals[ValNo].second);
+    for (Option *Opt : PositionalOpts)
+      if (RequiresValue(Opt)) {
+        ErrorParsing |= ProvidePositionalOption(
+            Opt, PositionalVals[ValNo].first, PositionalVals[ValNo].second);
         ValNo++;
       }