PPC: [turbofan] Call ArgumentsAccessStub to materialize arguments.

src/full-codegen/ppc/full-codegen-ppc.cc

 // Copyright 2014 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_PPC
 
 #include "src/code-factory.h"
 #include "src/code-stubs.h"
 #include "src/codegen.h"
 #include "src/compiler.h"
@@ skipping 276 matching lines @@
     __ LoadRoot(r3, Heap::kUndefinedValueRootIndex);
     __ bind(&done);
 
     SetVar(new_target_var, r3, r5, r6);
   }
 
   Variable* arguments = scope()->arguments();
   if (arguments != NULL) {
     // Function uses arguments object.
     Comment cmnt(masm_, "[ Allocate arguments object");
+    DCHECK(r4.is(ArgumentsAccessNewDescriptor::function()));
     if (!function_in_register_r4) {
       // Load this again, if it's used by the local context below.
-      __ LoadP(r6, MemOperand(fp, JavaScriptFrameConstants::kFunctionOffset));
-    } else {
-      __ mr(r6, r4);
+      __ LoadP(r4, MemOperand(fp, JavaScriptFrameConstants::kFunctionOffset));
     }
     // Receiver is just before the parameters on the caller's stack.
     int num_parameters = info->scope()->num_parameters();
     int offset = num_parameters * kPointerSize;
-    __ addi(r5, fp, Operand(StandardFrameConstants::kCallerSPOffset + offset));
-    __ LoadSmiLiteral(r4, Smi::FromInt(num_parameters));
-    __ Push(r6, r5, r4);
+    __ LoadSmiLiteral(ArgumentsAccessNewDescriptor::parameter_count(),
+                      Smi::FromInt(num_parameters));
+    __ addi(ArgumentsAccessNewDescriptor::parameter_pointer(), fp,
+            Operand(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, r3, r4, r5);
   }
 
   if (FLAG_trace) {
     __ CallRuntime(Runtime::kTraceEnter, 0);
   }
 
@@ skipping 4891 matching lines @@
     return ON_STACK_REPLACEMENT;
   }
 
   DCHECK(interrupt_address ==
          isolate->builtins()->OsrAfterStackCheck()->entry());
   return OSR_AFTER_STACK_CHECK;
 }
 }  // namespace internal
 }  // namespace v8
 #endif  // V8_TARGET_ARCH_PPC