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

src/mips64/builtins-mips64.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_MIPS64
 
 #include "src/codegen.h"
 #include "src/debug/debug.h"
 #include "src/deoptimizer.h"
 #include "src/full-codegen/full-codegen.h"
@@ skipping 1049 matching lines @@
 
   // Drop receiver + arguments and return.
   __ lw(at, FieldMemOperand(kInterpreterBytecodeArrayRegister,
                             BytecodeArray::kParameterSizeOffset));
   __ Daddu(sp, sp, at);
   __ Jump(ra);
 }
 
 
 // static
-void Builtins::Generate_InterpreterPushArgsAndCall(MacroAssembler* masm) {
+void Builtins::Generate_InterpreterPushArgsAndCallImpl(
+    MacroAssembler* masm, TailCallMode tail_call_mode) {
   // ----------- S t a t e -------------
   //  -- a0 : the number of arguments (not including the receiver)
   //  -- a2 : 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.
   //  -- a1 : the target to call (can be any Object).
   // -----------------------------------
 
   // Find the address of the last argument.
   __ Daddu(a3, a0, Operand(1));  // Add one for receiver.
   __ dsll(a3, a3, kPointerSizeLog2);
   __ Dsubu(a3, a2, Operand(a3));
 
   // Push the arguments.
   Label loop_header, loop_check;
   __ Branch(&loop_check);
   __ bind(&loop_header);
   __ ld(t0, MemOperand(a2));
   __ Daddu(a2, a2, Operand(-kPointerSize));
   __ push(t0);
   __ bind(&loop_check);
   __ Branch(&loop_header, gt, a2, Operand(a3));
 
   // Call the target.
-  __ 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 -------------
   // -- a0 : argument count (not including receiver)
   // -- a3 : new target
   // -- a1 : constructor to call
   // -- a2 : address of the first argument
@@ skipping 961 matching lines @@
   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());
   __ li(at, Operand(debug_is_active));
   __ lb(scratch1, MemOperand(at));
   __ Branch(&done, ne, scratch1, Operand(zero_reg));
 
+  // Drop possible interpreter handler/stub frame.
+  {
+    Label no_interpreter_frame;
+    __ ld(scratch3, MemOperand(fp, StandardFrameConstants::kMarkerOffset));
+    __ Branch(&no_interpreter_frame, ne, scratch3,
+              Operand(Smi::FromInt(StackFrame::STUB)));
+    __ ld(fp, MemOperand(fp, StandardFrameConstants::kCallerFPOffset));
+    __ bind(&no_interpreter_frame);
+  }
+
   // Check if next frame is an arguments adaptor frame.
   Label no_arguments_adaptor, formal_parameter_count_loaded;
   __ ld(scratch2, MemOperand(fp, StandardFrameConstants::kCallerFPOffset));
   __ ld(scratch3, MemOperand(scratch2, StandardFrameConstants::kContextOffset));
   __ Branch(&no_arguments_adaptor, ne, scratch3,
             Operand(Smi::FromInt(StackFrame::ARGUMENTS_ADAPTOR)));
 
   // Drop arguments adaptor frame and load arguments count.
   __ mov(fp, scratch2);
   __ ld(scratch1,
@@ skipping 660 matching lines @@
   }
 }
 
 
 #undef __
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_MIPS64