Add do-while and conditional and mark non asm nodes as unreachable

test/mjsunit/wasm/asm-wasm.js

 // Copyright 2015 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // Flags: --expose-wasm
 
 function IntTest() {
   "use asm";
   function sum(a, b) {
     a = a|0;
@@ skipping 620 matching lines @@
     var i = 0;
     for (i=1; i < 45 ; i = (i+1)|0) {
     }
     return i|0;
   }
 
   return {caller:caller};
 }
 
 assertEquals(45, WASM.asmCompileRun(TestForLoopWithoutBody.toString()));
+
+function TestDoWhile() {
+  "use asm"
+
+  function caller() {
+    var i = 0;
+    var ret = 21;
+    do {
+      ret = (ret + ret)|0;
+      i = (i + 1)|0;
+    } while (i < 2);
+    return ret|0;
+  }
+
+  return {caller:caller};
+}
+
+assertEquals(84, WASM.asmCompileRun(TestDoWhile.toString()));
+
+function TestConditional() {
+  "use asm"
+
+  function caller() {
+    var x = 1;
+    return ((x > 0) ? 41 : 71)|0;
+  }
+
+  return {caller:caller};
+}
+
+assertEquals(41, WASM.asmCompileRun(TestConditional.toString()));