Hydrogen support for context allocated harmony bindings.

test/mjsunit/harmony/block-let-crankshaft.js

 // Copyright 2011 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 77 matching lines @@
 function f11() {
   let x;
   x = 1;
 }
 
 function f12() {
   function x() {};
   x = 1;
 }
 
+function f13(x) {

[fschneider, 2011/12/08 12:58:54]

Where is f13-f23 invoked and optimized? I don't see them added to the array
above.

[Steven, 2011/12/08 14:25:41]

Done.

+  (function() { x; });
+}
+
+function f14() {
+  let x;
+  (function() { x; });
+}
+
+function f15() {
+  function x() {
+  }
+  (function() { x; });
+}
+
+function f16() {
+  let x = 1;
+  (function() { x; });
+}
+
+function f17() {
+  const x = 1;
+  (function() { x; });
+}
+
+function f18(x) {
+  return x;
+  (function() { x; });
+}
+
+function f19() {
+  let x;
+  return x;
+  (function() { x; });
+}
+
+function f20() {
+  function x() {
+  }
+  return x;
+  (function() { x; });
+}
+
+function f21(x) {
+  x = 1;
+  (function() { x; });
+}
+
+function f22() {
+  let x;
+  x = 1;
+  (function() { x; });
+}
+
+function f23() {
+  function x() { }
+  x = 1;
+  (function() { x; });
+}
+
 
 // Test that temporal dead zone semantics for function and block scoped
 // let bindings are handled by the optimizing compiler.
 
 function TestFunctionLocal(s) {
   'use strict';
   var func = eval("(function baz(){" + s + "; })");
   print("Testing:");
   print(func);
   for (var i = 0; i < 5; ++i) {
     try {
       func();
       assertUnreachable();
     } catch (e) {
       assertInstanceof(e, ReferenceError);
     }
   }
   %OptimizeFunctionOnNextCall(func);
   try {
     func();
     assertUnreachable();
   } catch (e) {
     assertInstanceof(e, ReferenceError);
   }
 }
 
+function TestFunctionContext(s) {
+  'use strict';
+  var func = eval("(function baz(){ " + s + "; (function() { x; }); })");
+  print("Testing:");
+  print(func);
+  for (var i = 0; i < 5; ++i) {
+    print(i);
+    try {
+      func();
+      assertUnreachable();
+    } catch (e) {
+      assertInstanceof(e, ReferenceError);
+    }
+  }
+  print("optimize");
+  %OptimizeFunctionOnNextCall(func);
+  try {
+    print("call");
+    func();
+    assertUnreachable();
+  } catch (e) {
+    print("catch");
+    assertInstanceof(e, ReferenceError);
+  }
+}
+
 function TestAll(s) {
   TestFunctionLocal(s);
+  TestFunctionContext(s);
 }
 
 // Use before initialization in declaration statement.
 TestAll('let x = x + 1');
 TestAll('let x = x += 1');
 TestAll('let x = x++');
 TestAll('let x = ++x');
 TestAll('const x = x + 1');
 
 // Use before initialization in prior statement.
@@ skipping 29 matching lines @@
   f(42, true);
 } catch (e) {
   assertInstanceof(e, ReferenceError);
 }
 
 try {
   g(42, true);
 } catch (e) {
   assertInstanceof(e, ReferenceError);
 }