Fix parallel recompilation wrt initial object/array map dependency.

R=ulan@chromium.org
BUG=

Review URL: https://chromiumcodereview.appspot.com/16641002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@15030 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/arm/lithium-codegen-arm.cc

@@ -93,12 +93,6 @@ void LCodeGen::FinishCode(Handle<Code> code) {
     transition_maps_.at(i)->AddDependentCode(
         DependentCode::kTransitionGroup, code);
   }
-  if (graph()->depends_on_empty_array_proto_elements()) {
-    isolate()->initial_object_prototype()->map()->AddDependentCode(
-        DependentCode::kElementsCantBeAddedGroup, code);
-    isolate()->initial_array_prototype()->map()->AddDependentCode(
-        DependentCode::kElementsCantBeAddedGroup, code);
-  }
 }
 
 

src/hydrogen.h

@@ -402,13 +402,15 @@ class HGraph: public ZoneObject {
   }
 
   void MarkDependsOnEmptyArrayProtoElements() {
+    // Add map dependency if not already added.
+    if (depends_on_empty_array_proto_elements_) return;
+    isolate()->initial_object_prototype()->map()->AddDependentCompilationInfo(
+        DependentCode::kElementsCantBeAddedGroup, info());
+    isolate()->initial_array_prototype()->map()->AddDependentCompilationInfo(
+        DependentCode::kElementsCantBeAddedGroup, info());
     depends_on_empty_array_proto_elements_ = true;
   }
 
-  bool depends_on_empty_array_proto_elements() {
-    return depends_on_empty_array_proto_elements_;
-  }
-
   void RecordUint32Instruction(HInstruction* instr) {
     if (uint32_instructions_ == NULL) {
       uint32_instructions_ = new(zone()) ZoneList<HInstruction*>(4, zone());

src/ia32/lithium-codegen-ia32.cc

@@ -115,12 +115,6 @@ void LCodeGen::FinishCode(Handle<Code> code) {
     transition_maps_.at(i)->AddDependentCode(
         DependentCode::kTransitionGroup, code);
   }
-  if (graph()->depends_on_empty_array_proto_elements()) {
-    isolate()->initial_object_prototype()->map()->AddDependentCode(
-        DependentCode::kElementsCantBeAddedGroup, code);
-    isolate()->initial_array_prototype()->map()->AddDependentCode(
-        DependentCode::kElementsCantBeAddedGroup, code);
-  }
 }
 
 

src/mips/lithium-codegen-mips.cc

@@ -93,12 +93,6 @@ void LCodeGen::FinishCode(Handle<Code> code) {
     transition_maps_.at(i)->AddDependentCode(
         DependentCode::kTransitionGroup, code);
   }
-  if (graph()->depends_on_empty_array_proto_elements()) {
-    isolate()->initial_object_prototype()->map()->AddDependentCode(
-        DependentCode::kElementsCantBeAddedGroup, code);
-    isolate()->initial_array_prototype()->map()->AddDependentCode(
-        DependentCode::kElementsCantBeAddedGroup, code);
-  }
 }
 
 

src/x64/lithium-codegen-x64.cc

@@ -98,12 +98,6 @@ void LCodeGen::FinishCode(Handle<Code> code) {
     transition_maps_.at(i)->AddDependentCode(
         DependentCode::kTransitionGroup, code);
   }
-  if (graph()->depends_on_empty_array_proto_elements()) {
-    isolate()->initial_object_prototype()->map()->AddDependentCode(
-        DependentCode::kElementsCantBeAddedGroup, code);
-    isolate()->initial_array_prototype()->map()->AddDependentCode(
-        DependentCode::kElementsCantBeAddedGroup, code);
-  }
 }
 
 

test/mjsunit/parallel-initial-prototype-change.js

@@ -0,0 +1,50 @@
+// Copyright 2013 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
+//       with the distribution.
+//     * Neither the name of Google Inc. nor the names of its
+//       contributors may be used to endorse or promote products derived
+//       from this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+// Flags: --allow-natives-syntax
+// Flags: --parallel-recompilation --parallel-recompilation-delay=50
+
+function assertUnoptimized(fun) {
+  assertTrue(%GetOptimizationStatus(fun) != 1);
+}
+
+function f1(a, i) {
+  return a[i] + 0.5;
+}
+
+var arr = [0.0,,2.5];
+assertEquals(0.5, f1(arr, 0));
+assertEquals(0.5, f1(arr, 0));
+
+// Optimized code of f1 depends on initial object and array maps.
+%OptimizeFunctionOnNextCall(f1, "parallel");
+assertEquals(0.5, f1(arr, 0));
+assertUnoptimized(f1);      // Not yet optimized.
+Object.prototype[1] = 1.5;  // Invalidate current initial object map.
+assertEquals(2, f1(arr, 1));
+%CompleteOptimization(f1);  // Conclude optimization with...
+assertUnoptimized(f1);      // ... bailing out due to map dependency.