# HG changeset patch
# User Jaroslav Tulach <jaroslav.tulach@apidesign.org>
# Date 1427980044 -7200
# Node ID 33ef5fe79475c2de7d98201e704555e7ed010848
# Parent  ff2a253900ed154e7403db87b8770c0f728e064d
Attempting to use for+switch flow and compare it to current nested-for one. jbox2d seems to preform similarly well.

diff -r ff2a253900ed -r 33ef5fe79475 rt/vm/src/main/java/org/apidesign/vm4brwsr/ByteCodeToJavaScript.java
--- a/rt/vm/src/main/java/org/apidesign/vm4brwsr/ByteCodeToJavaScript.java	Wed Mar 11 18:41:12 2015 +0100
+++ b/rt/vm/src/main/java/org/apidesign/vm4brwsr/ByteCodeToJavaScript.java	Thu Apr 02 15:07:24 2015 +0200
@@ -466,10 +466,9 @@
         } else {
             didBranches = true;
             lastStackFrame = -1;
-            append("\n  var gt = 0;\n");
+            out.append("\n  var gt = 0;\n  for(;;) switch(gt) {\n");
         }
         
-        int openBraces = 0;
         int topMostLabel = 0;
         for (int i = 0; i < byteCodes.length; i++) {
             int prev = i;
@@ -484,22 +483,10 @@
             }
             if (lastStackFrame != stackMapIterator.getFrameIndex()) {
                 smapper.flush(this);
-                if (i != 0) {
-                    append("    }\n");
-                }
-                if (openBraces > 64) {
-                    for (int c = 0; c < 64; c++) {
-                        append("break;}\n");
-                    }
-                    openBraces = 1;
-                    topMostLabel = i;
-                }
-                
                 lastStackFrame = stackMapIterator.getFrameIndex();
                 lmapper.syncWithFrameLocals(stackMapIterator.getFrameLocals());
                 smapper.syncWithFrameStack(stackMapIterator.getFrameStack());
-                append("    X_" + i).append(": for (;;) { IF: if (gt <= " + i + ") {\n");
-                openBraces++;
+                out.append("    case " + i).append(": ");                
                 changeInCatch = true;
             } else {
                 debug("    /* " + i + " */ ");
@@ -1513,9 +1500,6 @@
         if (didBranches) {
             append("\n    }\n");
         }
-        while (openBraces-- > 0) {
-            append('}');
-        }
         if (defineProp) {
             append("\n}});");
         } else {
@@ -2276,15 +2260,7 @@
     }
 
     private static void goTo(Appendable out, int current, int to, int canBack) throws IOException {
-        if (to < current) {
-            if (canBack < to) {
-                out.append("{ gt = 0; continue X_" + to + "; }");
-            } else {
-                out.append("{ gt = " + to + "; continue X_0; }");
-            }
-        } else {
-            out.append("{ gt = " + to + "; break IF; }");
-        }
+        out.append("{ gt = " + to + "; continue; }");
     }
 
     private static void emitIf(