From a2aa84873e9349e082bb684a646434f64880a617 Mon Sep 17 00:00:00 2001
From: "ricow@chromium.org"
 <ricow@chromium.org@ce2b1a6d-e550-0410-aec6-3dcde31c8c00>
Date: Thu, 3 Feb 2011 13:47:27 +0000
Subject: [PATCH] Add regression test for the deoptimizer immediately followed
 by gc bug.

In addition to the regression test I changed the gc-extension to take
a boolean flag specifying if compaction should be used (default is
false, existing tests will not change behaviour)

The regression test is disabled on arm and x64 with crankshaft
enabled. I made a bug to track this:
http://code.google.com/p/v8/issues/detail?id=1094


Review URL: http://codereview.chromium.org/6312118

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@6619 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
---
 src/extensions/gc-extension.cc           |  6 +++-
 test/mjsunit/mjsunit.status              |  4 +++
 test/mjsunit/regress/regress-deopt-gc.js | 49 ++++++++++++++++++++++++++++++++
 3 files changed, 58 insertions(+), 1 deletion(-)
 create mode 100644 test/mjsunit/regress/regress-deopt-gc.js

diff --git a/src/extensions/gc-extension.cc b/src/extensions/gc-extension.cc
index b8f081c..63daa05 100644
--- a/src/extensions/gc-extension.cc
+++ b/src/extensions/gc-extension.cc
@@ -40,8 +40,12 @@ v8::Handle<v8::FunctionTemplate> GCExtension::GetNativeFunction(
 
 
 v8::Handle<v8::Value> GCExtension::GC(const v8::Arguments& args) {
+  bool compact = false;
   // All allocation spaces other than NEW_SPACE have the same effect.
-  Heap::CollectAllGarbage(false);
+  if (args.Length() >= 1 && args[0]->IsBoolean()) {
+    compact = args[0]->BooleanValue();
+  }
+  Heap::CollectAllGarbage(compact);
   return v8::Undefined();
 }
 
diff --git a/test/mjsunit/mjsunit.status b/test/mjsunit/mjsunit.status
index 057c0fa..2448564 100644
--- a/test/mjsunit/mjsunit.status
+++ b/test/mjsunit/mjsunit.status
@@ -112,6 +112,8 @@ regress/regress-3247124: SKIP
 # Test that currently fails with crankshaft on ARM.
 compiler/simple-osr: FAIL
 
+# BUG (1094)
+regress/regress-deopt-gc: SKIP
 
 ##############################################################################
 [ $arch == x64 && $crankshaft ]
@@ -119,6 +121,8 @@ compiler/simple-osr: FAIL
 # BUG (1026) This test is currently flaky.
 compiler/simple-osr: SKIP
 
+# BUG (1094)
+regress/regress-deopt-gc: SKIP
 
 ##############################################################################
 [ $arch == mips ]
diff --git a/test/mjsunit/regress/regress-deopt-gc.js b/test/mjsunit/regress/regress-deopt-gc.js
new file mode 100644
index 0000000..7b7c29a
--- /dev/null
+++ b/test/mjsunit/regress/regress-deopt-gc.js
@@ -0,0 +1,49 @@
+// 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
+//       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 --expose-gc
+
+// This tests that we can correctly handle a GC immediately after a function
+// has been deoptimized, even when we have an activation of this function on
+// the stack.
+
+// Ensure that there is code objects before the code for the opt_me function.
+(function() { var a = 10; a++; })();
+
+function opt_me() {
+  deopt();
+}
+
+function deopt() {
+  // Make sure we don't inline this function
+  try { var a = 42; } catch(o) {};
+  %DeoptimizeFunction(opt_me);
+  gc(true);
+}
+
+
+opt_me();
-- 
2.7.4