Adds debugger patching to arm64.

runtime/vm/instructions_arm64_test.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"
 #if defined(TARGET_ARCH_ARM64)
 
 #include "vm/assembler.h"
 #include "vm/cpu.h"
 #include "vm/instructions.h"
@@ skipping 15 matching lines @@
   // in the code, points to the Ret instruction above, i.e. one instruction
   // before the end of the code buffer.
   CallPattern call(test->entry() + test->code().Size() - Instr::kInstrSize,
                    test->code());
   EXPECT_EQ(StubCode::InvokeDartCodeLabel().address(),
             call.TargetAddress());
 }
 
 
 ASSEMBLER_TEST_GENERATE(Jump, assembler) {
-  // TODO(zra): Use BranchPatchable after fixing JumpPattern to match a load
-  // from the object pool.n
-  __ BranchFixed(&StubCode::InvokeDartCodeLabel());
-  __ BranchFixed(&StubCode::AllocateArrayLabel());
+  __ BranchPatchable(&StubCode::InvokeDartCodeLabel());
+  __ BranchPatchable(&StubCode::AllocateArrayLabel());
 }
 
 
 ASSEMBLER_TEST_RUN(Jump, test) {
   const Code& code = test->code();
   const Instructions& instrs = Instructions::Handle(code.instructions());
   bool status =
       VirtualMemory::Protect(reinterpret_cast<void*>(instrs.EntryPoint()),
                              instrs.size(),
                              VirtualMemory::kReadWrite);
@@ skipping 11 matching lines @@
   jump2.SetTargetAddress(target1);
   EXPECT_EQ(StubCode::AllocateArrayLabel().address(),
             jump1.TargetAddress());
   EXPECT_EQ(StubCode::InvokeDartCodeLabel().address(),
             jump2.TargetAddress());
 }
 
 }  // namespace dart
 
 #endif  // defined TARGET_ARCH_ARM64