[turbofan] Call ArgumentsAccessStub to materialize arguments.

src/full-codegen/x64/full-codegen-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/code-stubs.h"
 #include "src/codegen.h"
 #include "src/compiler.h"
@@ skipping 263 matching lines @@
     __ bind(&done);
     SetVar(new_target_var, rax, rbx, rdx);
   }
 
   // Possibly allocate an arguments object.
   Variable* arguments = scope()->arguments();
   if (arguments != NULL) {
     // Arguments object must be allocated after the context object, in
     // case the "arguments" or ".arguments" variables are in the context.
     Comment cmnt(masm_, "[ Allocate arguments object");
-    if (function_in_register) {
-      __ Push(rdi);
-    } else {
-      __ Push(Operand(rbp, JavaScriptFrameConstants::kFunctionOffset));
+    DCHECK(rdi.is(ArgumentsAccessNewDescriptor::function()));
+    if (!function_in_register) {
+      __ movp(rdi, Operand(rbp, JavaScriptFrameConstants::kFunctionOffset));
     }
     // The receiver is just before the parameters on the caller's stack.
     int num_parameters = info->scope()->num_parameters();
     int offset = num_parameters * kPointerSize;
-    __ leap(rdx,
-           Operand(rbp, StandardFrameConstants::kCallerSPOffset + offset));
-    __ Push(rdx);
-    __ Push(Smi::FromInt(num_parameters));
+    __ Move(ArgumentsAccessNewDescriptor::parameter_count(),
+            Smi::FromInt(num_parameters));
+    __ leap(ArgumentsAccessNewDescriptor::parameter_pointer(),
+            Operand(rbp, StandardFrameConstants::kCallerSPOffset + offset));
+
     // Arguments to ArgumentsAccessStub:
-    //   function, receiver address, parameter count.
-    // The stub will rewrite receiver and parameter count if the previous
-    // stack frame was an arguments adapter frame.
-
-    ArgumentsAccessStub::Type type;
-    if (is_strict(language_mode()) || !has_simple_parameters()) {
-      type = ArgumentsAccessStub::NEW_STRICT;
-    } else if (literal()->has_duplicate_parameters()) {
-      type = ArgumentsAccessStub::NEW_SLOPPY_SLOW;
-    } else {
-      type = ArgumentsAccessStub::NEW_SLOPPY_FAST;
-    }
+    //   function, parameter pointer, parameter count.
+    // The stub will rewrite parameter pointer and parameter count if the
+    // previous stack frame was an arguments adapter frame.
+    bool is_unmapped = is_strict(language_mode()) || !has_simple_parameters();
+    ArgumentsAccessStub::Type type = ArgumentsAccessStub::ComputeType(
+        is_unmapped, literal()->has_duplicate_parameters());
     ArgumentsAccessStub stub(isolate(), type);
     __ CallStub(&stub);
 
     SetVar(arguments, rax, rbx, rdx);
   }
 
   if (FLAG_trace) {
     __ CallRuntime(Runtime::kTraceEnter, 0);
   }
 
@@ skipping 4829 matching lines @@
             Assembler::target_address_at(call_target_address,
                                          unoptimized_code));
   return OSR_AFTER_STACK_CHECK;
 }
 
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_X64