[Interpreter] Fix deopt when accumulator needs to be materialized.

src/x64/builtins-x64.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #if V8_TARGET_ARCH_X64
 
 #include "src/code-factory.h"
 #include "src/codegen.h"
 #include "src/deoptimizer.h"
 #include "src/full-codegen/full-codegen.h"
@@ skipping 836 matching lines @@
   __ addp(rbx, Immediate(Code::kHeaderSize - kHeapObjectTag));
   __ jmp(rbx);
 }
 
 
 static void Generate_InterpreterNotifyDeoptimizedHelper(
     MacroAssembler* masm, Deoptimizer::BailoutType type) {
   // Enter an internal frame.
   {
     FrameScope scope(masm, StackFrame::INTERNAL);
-    __ Push(kInterpreterAccumulatorRegister);  // Save accumulator register.
 
     // Pass the deoptimization type to the runtime system.
     __ Push(Smi::FromInt(static_cast<int>(type)));
-
     __ CallRuntime(Runtime::kNotifyDeoptimized);
-
-    __ Pop(kInterpreterAccumulatorRegister);  // Restore accumulator register.
     // Tear down internal frame.
   }
 
-  // Drop state (we don't use these for interpreter deopts) and push PC at top
+  // Drop state (we don't use these for interpreter deopts) and and pop the
+  // accumulator value into the accumulator register and push PC at top
   // of stack (to simulate initial call to bytecode handler in interpreter entry
   // trampoline).
   __ Pop(rbx);
   __ Drop(1);
+  __ Pop(kInterpreterAccumulatorRegister);
   __ Push(rbx);
 
   // Enter the bytecode dispatch.
   Generate_EnterBytecodeDispatch(masm);
 }
 
 
 void Builtins::Generate_InterpreterNotifyDeoptimized(MacroAssembler* masm) {
   Generate_InterpreterNotifyDeoptimizedHelper(masm, Deoptimizer::EAGER);
 }
@@ skipping 1964 matching lines @@
   __ ret(0);
 }
 
 
 #undef __
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_X64