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

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

Index: src/crankshaft/mips/lithium-codegen-mips.cc
diff --git a/src/crankshaft/mips/lithium-codegen-mips.cc b/src/crankshaft/mips/lithium-codegen-mips.cc
index 9a194772c6eef4ac1854cc9469b0b015cead86d1..9ff56bc3e3a39f05acfcf42ac5ab26c1befdc8d2 100644
--- a/src/crankshaft/mips/lithium-codegen-mips.cc
+++ b/src/crankshaft/mips/lithium-codegen-mips.cc
@@ -3640,14 +3640,8 @@ void LCodeGen::DoCallNewArray(LCallNewArray* instr) {
   DCHECK(ToRegister(instr->result()).is(v0));
 
   __ li(a0, 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.
-    __ li(a2, instr->hydrogen()->site());
-  } else {
-    __ LoadRoot(a2, Heap::kUndefinedValueRootIndex);
-  }
+  __ li(a2, instr->hydrogen()->site());
+
   ElementsKind kind = instr->hydrogen()->elements_kind();
   AllocationSiteOverrideMode override_mode =
       (AllocationSite::GetMode(kind) == TRACK_ALLOCATION_SITE)
@@ -3679,7 +3673,7 @@ 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);
   }
 }