8294359: Interpreter(AArch64) intrinsify Thread.currentThread()

Reviewed-by: aph, shade

Author: Hao Sun

src/hotspot/cpu/aarch64/templateInterpreterGenerator_aarch64.cpp

@@ -1681,6 +1681,17 @@ address TemplateInterpreterGenerator::generate_normal_entry(bool synchronized) {
   return entry_point;
 }
 
+// Method entry for java.lang.Thread.currentThread
+address TemplateInterpreterGenerator::generate_currentThread() {
+  address entry_point = __ pc();
+
+  __ ldr(r0, Address(rthread, JavaThread::vthread_offset()));
+  __ resolve_oop_handle(r0, rscratch1, rscratch2);
+  __ ret(lr);
+
+  return entry_point;
+}
+
 //-----------------------------------------------------------------------------
 // Exceptions
 

src/hotspot/share/interpreter/abstractInterpreter.cpp

@@ -133,7 +133,7 @@ AbstractInterpreter::MethodKind AbstractInterpreter::method_kind(const methodHan
       case vmIntrinsics::_floatToRawIntBits: return java_lang_Float_floatToRawIntBits;
       case vmIntrinsics::_longBitsToDouble:  return java_lang_Double_longBitsToDouble;
       case vmIntrinsics::_doubleToRawLongBits: return java_lang_Double_doubleToRawLongBits;
-#ifdef AMD64
+#if defined(AMD64) || defined(AARCH64)
       case vmIntrinsics::_currentThread:     return java_lang_Thread_currentThread;
 #endif
 #endif // ZERO

src/hotspot/share/interpreter/templateInterpreterGenerator.cpp

@@ -201,7 +201,7 @@ void TemplateInterpreterGenerator::generate_all() {
   method_entry(java_lang_math_fmaF )
   method_entry(java_lang_math_fmaD )
   method_entry(java_lang_ref_reference_get)
-#ifdef AMD64
+#if defined(AMD64) || defined(AARCH64)
   method_entry(java_lang_Thread_currentThread)
 #endif
   AbstractInterpreter::initialize_method_handle_entries();
@@ -433,7 +433,7 @@ address TemplateInterpreterGenerator::generate_method_entry(
                                            : // fall thru
   case Interpreter::java_util_zip_CRC32C_updateDirectByteBuffer
                                            : entry_point = generate_CRC32C_updateBytes_entry(kind); break;
-#ifdef AMD64
+#if defined(AMD64) || defined(AARCH64)
   case Interpreter::java_lang_Thread_currentThread
                                            : entry_point = generate_currentThread(); break;
 #endif

src/hotspot/share/interpreter/templateInterpreterGenerator.hpp

@@ -94,7 +94,7 @@ class TemplateInterpreterGenerator: public AbstractInterpreterGenerator {
   address generate_CRC32_update_entry();
   address generate_CRC32_updateBytes_entry(AbstractInterpreter::MethodKind kind);
   address generate_CRC32C_updateBytes_entry(AbstractInterpreter::MethodKind kind);
-#ifdef AMD64
+#if defined(AMD64) || defined(AARCH64)
   address generate_currentThread();
 #endif
 #ifdef IA32