Adds object pool, LoadImmediate, and LoadObject to ARM64.

runtime/vm/object_arm64_test.cc

Index: runtime/vm/object_arm64_test.cc
===================================================================
--- runtime/vm/object_arm64_test.cc	(revision 35070)
+++ runtime/vm/object_arm64_test.cc	(working copy)
@@ -6,6 +6,51 @@
 #include "vm/globals.h"
 #if defined(TARGET_ARCH_ARM64)
 
-// TODO(zra): Port these tests.
+#include "vm/assembler.h"
+#include "vm/object.h"
+#include "vm/unit_test.h"
 
+namespace dart {
+
+#define __ assembler->
+
+// Generate a simple dart code sequence.
+// This is used to test Code and Instruction object creation.
+void GenerateIncrement(Assembler* assembler) {
+  __ movz(R0, 0, 0);
+  __ Push(R0);
+  __ add(R0, R0, Operand(1));
+  __ str(R0, Address(SP));
+  __ ldr(R1, Address(SP));
+  __ add(R1, R1, Operand(1));
+  __ Pop(R0);
+  __ mov(R0, R1);
+  __ ret();
+}
+
+
+// Generate a dart code sequence that embeds a string object in it.
+// This is used to test Embedded String objects in the instructions.
+void GenerateEmbedStringInCode(Assembler* assembler, const char* str) {
+  const String& string_object =
+      String::ZoneHandle(String::New(str, Heap::kOld));
+  __ Push(PP);  // Save caller's pool pointer and load a new one here.
+  __ LoadPoolPointer(PP);
+  __ LoadObject(R0, string_object, PP);
+  __ Pop(PP);  // Restore caller's pool pointer.
+  __ ret();
+}
+
+
+// Generate a dart code sequence that embeds a smi object in it.
+// This is used to test Embedded Smi objects in the instructions.
+void GenerateEmbedSmiInCode(Assembler* assembler, intptr_t value) {
+  const Smi& smi_object = Smi::ZoneHandle(Smi::New(value));
+  const int64_t val = reinterpret_cast<int64_t>(smi_object.raw());
+  __ LoadImmediate(R0, val, kNoRegister);
+  __ ret();
+}
+
+}  // namespace dart
+
 #endif  // defined TARGET_ARCH_ARM64