[GIsel] Add missing space between type and name in GICombinerHelperArg

[Kai]

Summary

When using AdditionalArguments in a GICombinerHelper, the generator does not put a space between the type and the name.

E.g.

let AdditionalArguments = [GICombinerHelperArg<"bool", "IsSomething">];

ends up as

boolIsSomething) const;

in the generated file. This change adds a space between the type and the name.

[aemerson]

LGTM.

llvm/utils/TableGen/GICombinerEmitter.cpp

void GICombinerEmitter::generateCodeForTree(raw_ostream &OS,
   if (!AnyFullyTested)
     OS << Indent << "return false;\n";
 }
 
 static void emitAdditionalHelperMethodArguments(raw_ostream &OS,
                                                 Record *Combiner) {
   for (Record *Arg : Combiner->getValueAsListOfDefs("AdditionalArguments"))
     OS << ",\n    " << Arg->getValueAsString("Type")
-       << Arg->getValueAsString("Name");
+       << " " << Arg->getValueAsString("Name");
 }
 
 void GICombinerEmitter::run(raw_ostream &OS) {
   Records.startTimer("Gather rules");
   gatherRules(Rules, Combiner->getValueAsListOfDefs("Rules"));
   if (StopAfterParse) {
     MatchDagCtx.print(errs());
     PrintNote(Combiner->getLoc(),