X87: [turbofan] [deoptimizer] Support inlining of ES6 tail calls.

src/x87/deoptimizer-x87.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_X87
 
 #include "src/codegen.h"
 #include "src/deoptimizer.h"
 #include "src/full-codegen/full-codegen.h"
 #include "src/register-configuration.h"
@@ skipping 309 matching lines @@
   __ push(eax);
   __ PrepareCallCFunction(1, ebx);
   __ mov(Operand(esp, 0 * kPointerSize), eax);
   {
     AllowExternalCallThatCantCauseGC scope(masm());
     __ CallCFunction(
         ExternalReference::compute_output_frames_function(isolate()), 1);
   }
   __ pop(eax);
   __ pop(edi);
+  __ mov(esp, Operand(eax, Deoptimizer::caller_frame_top_offset()));
 
-  // Replace the current frame with the output frames.
+  // Replace the current (input) frame with the output frames.
   Label outer_push_loop, inner_push_loop,
       outer_loop_header, inner_loop_header;
   // Outer loop state: eax = current FrameDescription**, edx = one past the
   // last FrameDescription**.
   __ mov(edx, Operand(eax, Deoptimizer::output_count_offset()));
   __ mov(eax, Operand(eax, Deoptimizer::output_offset()));
   __ lea(edx, Operand(eax, edx, times_4, 0));
   __ jmp(&outer_loop_header);
   __ bind(&outer_push_loop);
   // Inner loop state: ebx = current FrameDescription*, ecx = loop index.
@@ skipping 80 matching lines @@
 }
 
 
 #undef __
 
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_X87