[crankshaft] Support inlining of function calls in tail position (in ES6 sense).

src/crankshaft/x64/lithium-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.
 
 #include "src/crankshaft/x64/lithium-x64.h"
 
 #include <sstream>
 
 #if V8_TARGET_ARCH_X64
 
@@ skipping 2526 matching lines @@
     return AssignEnvironment(
         AssignPointerMap(new(zone()) LStackCheck(context)));
   }
 }
 
 
 LInstruction* LChunkBuilder::DoEnterInlined(HEnterInlined* instr) {
   HEnvironment* outer = current_block_->last_environment();
   outer->set_ast_id(instr->ReturnId());
   HConstant* undefined = graph()->GetConstantUndefined();
-  HEnvironment* inner = outer->CopyForInlining(instr->closure(),
-                                               instr->arguments_count(),
-                                               instr->function(),
-                                               undefined,
-                                               instr->inlining_kind());
+  HEnvironment* inner = outer->CopyForInlining(
+      instr->closure(), instr->arguments_count(), instr->function(), undefined,
+      instr->inlining_kind(), instr->syntactic_tail_call_mode());
   // Only replay binding of arguments object if it wasn't removed from graph.
   if (instr->arguments_var() != NULL && instr->arguments_object()->IsLinked()) {
     inner->Bind(instr->arguments_var(), instr->arguments_object());
   }
   inner->BindContext(instr->closure_context());
   inner->set_entry(instr);
   current_block_->UpdateEnvironment(inner);
   chunk_->AddInlinedFunction(instr->shared());
   return NULL;
 }
@@ skipping 52 matching lines @@
 LInstruction* LChunkBuilder::DoStoreFrameContext(HStoreFrameContext* instr) {
   LOperand* context = UseRegisterAtStart(instr->context());
   return new(zone()) LStoreFrameContext(context);
 }
 
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_X64