[GR-26134] Stop systematically splitting String#to_sym.

PullRequest: truffleruby/1984

Author: eregon

src/main/java/org/truffleruby/core/string/StringNodes.java

@@ -172,7 +172,6 @@
 import org.truffleruby.language.control.RaiseException;
 import org.truffleruby.language.dispatch.DispatchNode;
 import org.truffleruby.language.library.RubyLibrary;
-import org.truffleruby.language.methods.Split;
 import org.truffleruby.language.objects.AllocateHelperNode;
 import org.truffleruby.language.objects.WriteObjectFieldNode;
 import org.truffleruby.language.yield.YieldNode;
@@ -2487,7 +2486,7 @@ public boolean isStringSubclass(RubyString string) {
 
     }
 
-    @CoreMethod(names = { "to_sym", "intern" }, split = Split.ALWAYS)
+    @CoreMethod(names = { "to_sym", "intern" })
     @ImportStatic({ StringCachingGuards.class, StringGuards.class, StringOperations.class })
     public abstract static class ToSymNode extends CoreMethodArrayArgumentsNode {
 

test/truffle/compiler/pe/core/string_pe.rb

@@ -72,5 +72,3 @@
 
 example "14.to_s.length", 2
 counter example "14.to_s.getbyte(0)" # Doesn't work becuase the bytes are only populated on demand and so aren't constant
-
-example "'TO_SYM'.to_sym", :TO_SYM