PPC: Partial revert of rest parameter desugaring.

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

Index: src/full-codegen/ppc/full-codegen-ppc.cc
diff --git a/src/full-codegen/ppc/full-codegen-ppc.cc b/src/full-codegen/ppc/full-codegen-ppc.cc
index 89b1a7277f5e80dd98d825ca8cb7064464876d54..5600e69f3c71bf53fe99d62d5d62b589d6bb5d05 100644
--- a/src/full-codegen/ppc/full-codegen-ppc.cc
+++ b/src/full-codegen/ppc/full-codegen-ppc.cc
@@ -264,6 +264,28 @@ void FullCodeGenerator::Generate() {
     SetVar(new_target_var, r6, r3, r5);
   }
 
+  // Possibly allocate RestParameters
+  int rest_index;
+  Variable* rest_param = scope()->rest_parameter(&rest_index);
+  if (rest_param) {
+    Comment cmnt(masm_, "[ Allocate rest parameter array");
+
+    int num_parameters = info->scope()->num_parameters();
+    int offset = num_parameters * kPointerSize;
+
+    __ addi(r6, fp, Operand(StandardFrameConstants::kCallerSPOffset + offset));
+    __ LoadSmiLiteral(r5, Smi::FromInt(num_parameters));
+    __ LoadSmiLiteral(r4, Smi::FromInt(rest_index));
+    __ LoadSmiLiteral(r3, Smi::FromInt(language_mode()));
+    __ Push(r6, r5, r4, r3);
+    function_in_register_r4 = false;
+
+    RestParamAccessStub stub(isolate());
+    __ CallStub(&stub);
+
+    SetVar(rest_param, r3, r4, r5);
+  }
+
   Variable* arguments = scope()->arguments();
   if (arguments != NULL) {
     // Function uses arguments object.