Track references to allocation stubs via static_calls_table, instead of keeping two referencers ali…

runtime/vm/intermediate_language_arm64.cc

 // Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "vm/globals.h"  // Needed here to get TARGET_ARCH_ARM64.
 #if defined(TARGET_ARCH_ARM64)
 
 #include "vm/intermediate_language.h"
 
 #include "vm/dart_entry.h"
@@ skipping 1967 matching lines @@
   ASSERT(locs()->in(kElementTypePos).reg() == R1);
   ASSERT(locs()->in(kLengthPos).reg() == R2);
   Isolate* isolate = compiler->isolate();
   const Code& stub = Code::Handle(
       isolate, isolate->stub_code()->GetAllocateArrayStub());
   const ExternalLabel label(stub.EntryPoint());
   compiler->GenerateCall(token_pos(),
                          &label,
                          RawPcDescriptors::kOther,
                          locs());
+  compiler->AddStubCallTarget(stub);
   ASSERT(locs()->out(0).reg() == R0);
 }
 
 
 LocationSummary* LoadFieldInstr::MakeLocationSummary(Isolate* isolate,
                                                      bool opt) const {
   const intptr_t kNumInputs = 1;
   const intptr_t kNumTemps =
       (IsUnboxedLoad() && opt) ? 1 :
           ((IsPotentialUnboxedLoad()) ? 1 : 0);
@@ skipping 3477 matching lines @@
 void AllocateObjectInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
   Isolate* isolate = compiler->isolate();
   StubCode* stub_code = isolate->stub_code();
   const Code& stub = Code::Handle(isolate,
                                   stub_code->GetAllocationStubForClass(cls()));
   const ExternalLabel label(stub.EntryPoint());
   compiler->GenerateCall(token_pos(),
                          &label,
                          RawPcDescriptors::kOther,
                          locs());
+  compiler->AddStubCallTarget(stub);
   __ Drop(ArgumentCount());  // Discard arguments.
 }
 
 
 void DebugStepCheckInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
   ASSERT(!compiler->is_optimizing());
   StubCode* stub_code = compiler->isolate()->stub_code();
   const ExternalLabel label(stub_code->DebugStepCheckEntryPoint());
   compiler->GenerateCall(token_pos(), &label, stub_kind_, locs());
 #if defined(DEBUG)
   __ LoadImmediate(R4, kInvalidObjectPointer, kNoPP);
   __ LoadImmediate(R5, kInvalidObjectPointer, kNoPP);
 #endif
 }
 
 }  // namespace dart
 
 #endif  // defined TARGET_ARCH_ARM64