Unify the stack layout for construct frames

src/ppc/frames-ppc.h

Index: src/ppc/frames-ppc.h
diff --git a/src/ppc/frames-ppc.h b/src/ppc/frames-ppc.h
index 3316086dff24e48146d20592e97debc46bce96ae..3e66b22ea41cbb50cf71651e7e9f4da30ce0e428 100644
--- a/src/ppc/frames-ppc.h
+++ b/src/ppc/frames-ppc.h
@@ -161,13 +161,12 @@ class ArgumentsAdaptorFrameConstants : public AllStatic {
 class ConstructFrameConstants : public AllStatic {
  public:
   // FP-relative.
-  static const int kImplicitReceiverOffset = -6 * kPointerSize;
-  static const int kConstructorOffset = -5 * kPointerSize;
+  static const int kImplicitReceiverOffset = -5 * kPointerSize;
   static const int kLengthOffset = -4 * kPointerSize;
   static const int kCodeOffset = StandardFrameConstants::kExpressionsOffset;
 
   static const int kFrameSize =
-      StandardFrameConstants::kFixedFrameSize + 4 * kPointerSize;
+      StandardFrameConstants::kFixedFrameSize + 3 * kPointerSize;
 };