Fix handling of recompiling code for optimized and inlined functions

test/mjsunit/debug-break-inline.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
+//       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: --expose-debug-as debug --allow-natives-syntax
+
+// This test tests that deoptimization due to debug breaks works for
+// inlined functions where the full-code is generated before the
+// debugger is attached.
+//
+//See http://code.google.com/p/chromium/issues/detail?id=105375
+
+// Get the Debug object exposed from the debug context global object.
+Debug = debug.Debug;
+
+var count = 0;
+var break_count = 0;
+
+// Debug event listener which steps until the global variable done is true.

[Yang, 2011/11/30 08:56:52]

I don't see a global variable named "done".  Outdated comment?

+function listener(event, exec_state, event_data, data) {
+  if (event == Debug.DebugEvent.Break) {
+    break_count++;
+    if (break_count == 1) {
+      Debug.setBreakPoint(g, 3);
+
+      for (var i = 0; i < exec_state.frameCount(); i++) {
+        var frame = exec_state.frame(i);
+        // When function f is optimized (1 means YES, see runtime.cc) we
+        // expect an optimized frame for f and g.
+        if (%GetOptimizationStatus(f) == 1) {
+          if (i == 1) {
+            assertTrue(frame.isOptimizedFrame());
+            assertTrue(frame.isInlinedFrame());
+            assertEquals(4 - i, frame.inlinedFrameIndex());
+          } else if (i == 2) {
+            assertTrue(frame.isOptimizedFrame());
+            assertFalse(frame.isInlinedFrame());
+          } else {
+            assertFalse(frame.isOptimizedFrame());
+            assertFalse(frame.isInlinedFrame());
+          }
+        }
+      }
+    }
+  }
+}
+
+function f() {
+  g();
+}
+
+function g() {
+  count++;
+  h();
+  var b = 1;
+}
+
+function h() {
+  debugger;
+}
+
+f();f();f();
+%OptimizeFunctionOnNextCall(f);
+f();
+
+// Add the debug event listener.
+Debug.setListener(listener);
+
+f();
+
+assertEquals(5, count);
+assertEquals(2, break_count);
+
+// Get rid of the debug event listener.
+Debug.setListener(null);