Fixed deoptimization of inlined getters.

src/arm/stub-cache-arm.cc

 // Copyright 2012 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 2933 matching lines @@
   GenerateLoadCallback(object, holder, r0, r2, r3, r1, r4, r5, callback, name,
                        &miss);
   __ bind(&miss);
   GenerateLoadMiss(masm(), Code::LOAD_IC);
 
   // Return the generated code.
   return GetCode(Code::CALLBACKS, name);
 }
 
 
+#undef __
+#define __ ACCESS_MASM(masm)
+
+
+void LoadStubCompiler::GenerateLoadViaGetter(MacroAssembler* masm,
+                                             Handle<JSFunction> getter) {
+  // ----------- S t a t e -------------
+  //  -- r0    : receiver
+  //  -- r2    : name
+  //  -- lr    : return address
+  // -----------------------------------
+  {
+    FrameScope scope(masm, StackFrame::INTERNAL);
+
+    if (!getter.is_null()) {
+      // Call the JavaScript getter with the receiver on the stack.
+      __ push(r0);
+      ParameterCount actual(0);
+      __ InvokeFunction(getter, actual, CALL_FUNCTION, NullCallWrapper(),
+                        CALL_AS_METHOD);
+    } else {
+      // If we generate a global code snippet for deoptimization only, remember
+      // the place to continue after deoptimization.
+      masm->isolate()->heap()->SetGetterStubDeoptPCOffset(masm->pc_offset());
+    }
+
+    // Restore context register.
+    __ ldr(cp, MemOperand(fp, StandardFrameConstants::kContextOffset));
+  }
+  __ Ret();
+}
+
+
+#undef __
+#define __ ACCESS_MASM(masm())
+
+
 Handle<Code> LoadStubCompiler::CompileLoadViaGetter(
     Handle<String> name,
     Handle<JSObject> receiver,
     Handle<JSObject> holder,
     Handle<JSFunction> getter) {
   // ----------- S t a t e -------------
   //  -- r0    : receiver
   //  -- r2    : name
   //  -- lr    : return address
   // -----------------------------------
   Label miss;
 
   // Check that the maps haven't changed.
   __ JumpIfSmi(r0, &miss);
   CheckPrototypes(receiver, r0, holder, r3, r4, r1, name, &miss);
 
-  {
-    FrameScope scope(masm(), StackFrame::INTERNAL);
-
-    // Call the JavaScript getter with the receiver on the stack.
-    __ push(r0);
-    ParameterCount actual(0);
-    __ InvokeFunction(getter, actual, CALL_FUNCTION, NullCallWrapper(),
-                      CALL_AS_METHOD);
-
-    // Restore context register.
-    __ ldr(cp, MemOperand(fp, StandardFrameConstants::kContextOffset));
-  }
-  __ Ret();
+  GenerateLoadViaGetter(masm(), getter);
 
   __ bind(&miss);
   GenerateLoadMiss(masm(), Code::LOAD_IC);
 
   // Return the generated code.
   return GetCode(Code::CALLBACKS, name);
 }
 
 
 Handle<Code> LoadStubCompiler::CompileLoadConstant(Handle<JSObject> object,
@@ skipping 1755 matching lines @@
     __ Jump(ic_slow, RelocInfo::CODE_TARGET);
   }
 }
 
 
 #undef __
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_ARM