[turbofan] Call ArgumentsAccessStub to materialize arguments.

src/full-codegen/mips64/full-codegen-mips64.cc

Index: src/full-codegen/mips64/full-codegen-mips64.cc
diff --git a/src/full-codegen/mips64/full-codegen-mips64.cc b/src/full-codegen/mips64/full-codegen-mips64.cc
index c8134ffd9b46d57b7a74912f30ad517e33041b97..5ff766b4b4621579c33e40daddf4628a4dd5e1f3 100644
--- a/src/full-codegen/mips64/full-codegen-mips64.cc
+++ b/src/full-codegen/mips64/full-codegen-mips64.cc
@@ -295,32 +295,26 @@ void FullCodeGenerator::Generate() {
   if (arguments != NULL) {
     // Function uses arguments object.
     Comment cmnt(masm_, "[ Allocate arguments object");
+    DCHECK(a1.is(ArgumentsAccessNewDescriptor::function()));
     if (!function_in_register_a1) {
       // Load this again, if it's used by the local context below.
-      __ ld(a3, MemOperand(fp, JavaScriptFrameConstants::kFunctionOffset));
-    } else {
-      __ mov(a3, a1);
+      __ ld(a1, 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;
-    __ Daddu(a2, fp,
-           Operand(StandardFrameConstants::kCallerSPOffset + offset));
-    __ li(a1, Operand(Smi::FromInt(num_parameters)));
-    __ Push(a3, a2, a1);
+    __ li(ArgumentsAccessNewDescriptor::parameter_count(),
+          Operand(Smi::FromInt(num_parameters)));
+    __ Daddu(ArgumentsAccessNewDescriptor::parameter_pointer(), fp,
+             Operand(StandardFrameConstants::kCallerSPOffset + offset));
 
     // Arguments to ArgumentsAccessStub:
-    //   function, receiver address, parameter count.
-    // The stub will rewrite receiever 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);