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

src/crankshaft/x64/lithium-codegen-x64.cc

 // Copyright 2013 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #if V8_TARGET_ARCH_X64
 
 #include "src/crankshaft/x64/lithium-codegen-x64.h"
 
 #include "src/base/bits.h"
 #include "src/code-factory.h"
@@ skipping 3711 matching lines @@
   }
 }
 
 
 void LCodeGen::DoCallNewArray(LCallNewArray* instr) {
   DCHECK(ToRegister(instr->context()).is(rsi));
   DCHECK(ToRegister(instr->constructor()).is(rdi));
   DCHECK(ToRegister(instr->result()).is(rax));
 
   __ Set(rax, 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(rbx, instr->hydrogen()->site());
-  } else {
-    __ LoadRoot(rbx, Heap::kUndefinedValueRootIndex);
-  }
+  __ Move(rbx, instr->hydrogen()->site());
 
   ElementsKind kind = instr->hydrogen()->elements_kind();
   AllocationSiteOverrideMode override_mode =
       (AllocationSite::GetMode(kind) == TRACK_ALLOCATION_SITE)
           ? DISABLE_ALLOCATION_SITES
           : DONT_OVERRIDE;
 
   if (instr->arity() == 0) {
     ArrayNoArgumentConstructorStub stub(isolate(), kind, override_mode);
     CallCode(stub.GetCode(), RelocInfo::CODE_TARGET, instr);
@@ skipping 13 matching lines @@
                                               override_mode);
       CallCode(stub.GetCode(), RelocInfo::CODE_TARGET, instr);
       __ jmp(&done, Label::kNear);
       __ bind(&packed_case);
     }
 
     ArraySingleArgumentConstructorStub stub(isolate(), kind, override_mode);
     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);
   }
 }
 
 
 void LCodeGen::DoCallRuntime(LCallRuntime* instr) {
   DCHECK(ToRegister(instr->context()).is(rsi));
   CallRuntime(instr->function(), instr->arity(), instr, instr->save_doubles());
 }
 
@@ skipping 1839 matching lines @@
   __ bind(deferred->exit());
   __ bind(&done);
 }
 
 #undef __
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_X64