[es6] [interpreter] Add tail calls support to Ignition.

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 738 matching lines @@
   __ bind(&loop_header);
   __ Push(Operand(rbx, 0));
   __ subp(rbx, Immediate(kPointerSize));
   __ bind(&loop_check);
   __ cmpp(rbx, rcx);
   __ j(greater, &loop_header, Label::kNear);
 }
 
 
 // static
-void Builtins::Generate_InterpreterPushArgsAndCall(MacroAssembler* masm) {
+void Builtins::Generate_InterpreterPushArgsAndCallImpl(
+    MacroAssembler* masm, TailCallMode tail_call_mode) {
   // ----------- S t a t e -------------
   //  -- rax : the number of arguments (not including the receiver)
   //  -- rbx : the address of the first argument to be pushed. Subsequent
   //           arguments should be consecutive above this, in the same order as
   //           they are to be pushed onto the stack.
   //  -- rdi : the target to call (can be any Object).
   // -----------------------------------
 
   // Pop return address to allow tail-call after pushing arguments.
   __ PopReturnAddressTo(kScratchRegister);
 
   Generate_InterpreterPushArgs(masm, true);
 
   // Call the target.
   __ PushReturnAddressFrom(kScratchRegister);  // Re-push return address.
-  __ Jump(masm->isolate()->builtins()->Call(), RelocInfo::CODE_TARGET);
+  __ Jump(masm->isolate()->builtins()->Call(ConvertReceiverMode::kAny,
+                                            tail_call_mode),
+          RelocInfo::CODE_TARGET);
 }
 
 
 // static
 void Builtins::Generate_InterpreterPushArgsAndConstruct(MacroAssembler* masm) {
   // ----------- S t a t e -------------
   //  -- rax : the number of arguments (not including the receiver)
   //  -- rdx : the new target (either the same as the constructor or
   //           the JSFunction on which new was invoked initially)
   //  -- rdi : the constructor to call (can be any Object)
@@ skipping 1397 matching lines @@
                         Register scratch3) {
   DCHECK(!AreAliased(args_reg, scratch1, scratch2, scratch3));
   Comment cmnt(masm, "[ PrepareForTailCall");
 
   // Prepare for tail call only if the debugger is not active.
   Label done;
   ExternalReference debug_is_active =
       ExternalReference::debug_is_active_address(masm->isolate());
   __ Move(kScratchRegister, debug_is_active);
   __ cmpb(Operand(kScratchRegister, 0), Immediate(0));
-  __ j(not_equal, &done, Label::kNear);
+  __ j(not_equal, &done);
+
+  // Drop possible interpreter handler/stub frame.
+  {
+    Label no_interpreter_frame;
+    __ Cmp(Operand(rbp, StandardFrameConstants::kMarkerOffset),
+           Smi::FromInt(StackFrame::STUB));
+    __ j(not_equal, &no_interpreter_frame, Label::kNear);
+    __ movp(rbp, Operand(rbp, StandardFrameConstants::kCallerFPOffset));
+    __ bind(&no_interpreter_frame);
+  }
 
   // Check if next frame is an arguments adaptor frame.
   Label no_arguments_adaptor, formal_parameter_count_loaded;
   __ movp(scratch2, Operand(rbp, StandardFrameConstants::kCallerFPOffset));
   __ Cmp(Operand(scratch2, StandardFrameConstants::kContextOffset),
          Smi::FromInt(StackFrame::ARGUMENTS_ADAPTOR));
   __ j(not_equal, &no_arguments_adaptor, Label::kNear);
 
   // Drop arguments adaptor frame and load arguments count.
   __ movp(rbp, scratch2);
@@ skipping 646 matching lines @@
   __ ret(0);
 }
 
 
 #undef __
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_X64