PPC: [stubs] Remove N-argument Hydrogen-based Array constructor stub

src/crankshaft/ppc/lithium-codegen-ppc.cc

Index: src/crankshaft/ppc/lithium-codegen-ppc.cc
diff --git a/src/crankshaft/ppc/lithium-codegen-ppc.cc b/src/crankshaft/ppc/lithium-codegen-ppc.cc
index 4bdb85fbedf5d3c51ae61a1fbf46d93c47af3368..2cd27f25165c89c7aa4aae38ae24271f279a87ee 100644
--- a/src/crankshaft/ppc/lithium-codegen-ppc.cc
+++ b/src/crankshaft/ppc/lithium-codegen-ppc.cc
@@ -3920,14 +3920,8 @@ void LCodeGen::DoCallNewArray(LCallNewArray* instr) {
   DCHECK(ToRegister(instr->result()).is(r3));
 
   __ mov(r3, Operand(instr->arity()));
-  if (instr->arity() == 1) {
-    // We only need the allocation site for the case we have a length argument.
-    // The case may bail out to the runtime, which will determine the correct
-    // elements kind with the site.
-    __ Move(r5, instr->hydrogen()->site());
-  } else {
-    __ LoadRoot(r5, Heap::kUndefinedValueRootIndex);
-  }
+  __ Move(r5, instr->hydrogen()->site());
+
   ElementsKind kind = instr->hydrogen()->elements_kind();
   AllocationSiteOverrideMode override_mode =
       (AllocationSite::GetMode(kind) == TRACK_ALLOCATION_SITE)
@@ -3959,7 +3953,7 @@ void LCodeGen::DoCallNewArray(LCallNewArray* instr) {
     CallCode(stub.GetCode(), RelocInfo::CODE_TARGET, instr);
     __ bind(&done);
   } else {
-    ArrayNArgumentsConstructorStub stub(isolate(), kind, override_mode);
+    ArrayNArgumentsConstructorStub stub(isolate());
     CallCode(stub.GetCode(), RelocInfo::CODE_TARGET, instr);
   }
 }