Make Trace and ThreadPoll have their own interpret methods.

These are both rarely encountered in scope bodies so it would be nice to remove an
explicit impl from the in the body interpreter.

Author: enebo

core/src/main/java/org/jruby/ir/instructions/ThreadPollInstr.java

@@ -2,8 +2,14 @@
 
 import org.jruby.ir.IRVisitor;
 import org.jruby.ir.Operation;
+import org.jruby.ir.interpreter.Profiler;
+import org.jruby.ir.runtime.IRRuntimeHelpers;
 import org.jruby.ir.transformations.inlining.CloneInfo;
 import org.jruby.ir.transformations.inlining.SimpleCloneInfo;
+import org.jruby.parser.StaticScope;
+import org.jruby.runtime.DynamicScope;
+import org.jruby.runtime.ThreadContext;
+import org.jruby.runtime.builtin.IRubyObject;
 
 public class ThreadPollInstr extends Instr implements FixedArityInstr {
     public final boolean onBackEdge;
@@ -29,4 +35,11 @@ public Instr clone(CloneInfo ii) {
     public void visit(IRVisitor visitor) {
         visitor.ThreadPollInstr(this);
     }
+
+    @Override
+    public Object interpret(ThreadContext context, StaticScope currScope, DynamicScope currDynScope, IRubyObject self, Object[] temp) {
+        if (IRRuntimeHelpers.inProfileMode()) Profiler.clockTick();
+        context.callThreadPoll();
+        return null;
+    }
 }

core/src/main/java/org/jruby/ir/instructions/TraceInstr.java

@@ -2,7 +2,11 @@
 
 import org.jruby.ir.Operation;
 import org.jruby.ir.transformations.inlining.CloneInfo;
+import org.jruby.parser.StaticScope;
+import org.jruby.runtime.DynamicScope;
 import org.jruby.runtime.RubyEvent;
+import org.jruby.runtime.ThreadContext;
+import org.jruby.runtime.builtin.IRubyObject;
 
 // FIXME: When presistence is revisited this should strip these out of code streams on save and add them in if
 // tracing is on for load.
@@ -49,4 +53,16 @@ public int getLinenumber() {
     public String[] toStringNonOperandArgs() {
         return new String[] {"ev: " + event, "name: " + name, "file: " + filename, "line: " + linenumber};
     }
+
+    @Override
+    public Object interpret(ThreadContext context, StaticScope currScope, DynamicScope currDynScope, IRubyObject self, Object[] temp) {
+        if (context.runtime.hasEventHooks()) {
+            // FIXME: Try and statically generate END linenumber instead of hacking it.
+            int linenumber = getLinenumber() == -1 ? context.getLine()+1 : getLinenumber();
+
+            context.trace(getEvent(), getName(), context.getFrameKlazz(), getFilename(), linenumber);
+        }
+
+        return null;
+    }
 }

core/src/main/java/org/jruby/ir/interpreter/BodyInterpreterEngine.java

@@ -194,21 +194,6 @@ public IRubyObject interpret(ThreadContext context, IRubyObject self, Interprete
                         setResult(temp, currDynScope, gfi.getResult(), result);
                         break;
                     }
-                    case TRACE: {
-                        if (context.runtime.hasEventHooks()) {
-                            TraceInstr trace = (TraceInstr) instr;
-                            // FIXME: Try and statically generate END linenumber instead of hacking it.
-                            int linenumber = trace.getLinenumber() == -1 ? context.getLine()+1 : trace.getLinenumber();
-
-                            context.trace(trace.getEvent(), trace.getName(), context.getFrameKlazz(),
-                                    trace.getFilename(), linenumber);
-                        }
-                        break;
-                    }
-                    case THREAD_POLL:
-                        if (IRRuntimeHelpers.inProfileMode()) Profiler.clockTick();
-                        context.callThreadPoll();
-                        break;
                     default:
                         if (instr.getOperation().opClass == OpClass.BRANCH_OP) {
                             ipc = instr.interpretAndGetNewIPC(context, currDynScope, currScope, self, temp, ipc);