Merge 6800:7180 from the bleeding edge branch to the experimental/gc branch.

src/arm/deoptimizer-arm.cc

Index: src/arm/deoptimizer-arm.cc
===================================================================
--- src/arm/deoptimizer-arm.cc	(revision 7180)
+++ src/arm/deoptimizer-arm.cc	(working copy)
@@ -46,6 +46,7 @@
 
 
 void Deoptimizer::DeoptimizeFunction(JSFunction* function) {
+  HandleScope scope;
   AssertNoAllocation no_allocation;
 
   if (!function->IsOptimized()) return;
@@ -69,8 +70,6 @@
     int deoptimization_index = safepoint_entry.deoptimization_index();
     int gap_code_size = safepoint_entry.gap_code_size();
     // Check that we did not shoot past next safepoint.
-    // TODO(srdjan): How do we guarantee that safepoint code does not
-    // overlap other safepoint patching code?
     CHECK(pc_offset >= last_pc_offset);
 #ifdef DEBUG
     // Destroy the code which is not supposed to be run again.
@@ -117,6 +116,11 @@
     PrintF("[forced deoptimization: ");
     function->PrintName();
     PrintF(" / %x]\n", reinterpret_cast<uint32_t>(function));
+#ifdef DEBUG
+    if (FLAG_print_code) {
+      code->PrintLn();
+    }
+#endif
   }
 }
 
@@ -431,14 +435,16 @@
            fp_value, output_offset, value);
   }
 
-  // The context can be gotten from the function so long as we don't
-  // optimize functions that need local contexts.
+  // For the bottommost output frame the context can be gotten from the input
+  // frame. For all subsequent output frames it can be gotten from the function
+  // so long as we don't inline functions that need local contexts.
   output_offset -= kPointerSize;
   input_offset -= kPointerSize;
-  value = reinterpret_cast<intptr_t>(function->context());
-  // The context for the bottommost output frame should also agree with the
-  // input frame.
-  ASSERT(!is_bottommost || input_->GetFrameSlot(input_offset) == value);
+  if (is_bottommost) {
+    value = input_->GetFrameSlot(input_offset);
+  } else {
+    value = reinterpret_cast<intptr_t>(function->context());
+  }
   output_frame->SetFrameSlot(output_offset, value);
   if (is_topmost) {
     output_frame->SetRegister(cp.code(), value);