natClass.cc (isInstance): Use __builtin_expect.

2000-05-05  Bryce McKinlay  <bryce@albatross.co.nz>

	* java/lang/natClass.cc (isInstance): Use __builtin_expect.
	(_Jv_IsAssignableFrom): Ditto.
	(_Jv_IsInstanceOf): Ditto.
	(_Jv_CheckCast): Ditto.
	(_Jv_CheckArrayStore): Ditto.
	* java/lang/Class.h (_Jv_InitClass): Ditto.
	* java/lang/natObject.cc (_Jv_MonitorEnter): __builtin_expect `false',
	not `0'.
	(notify): Ditto.
	(notifyAll): Ditto.
	(wait): Ditto.
	(_Jv_MonitorExit): Ditto.
	* boehm.cc (_Jv_MarkObj): Ditto.
	(_Jv_MarkObj): Ditto.
	(_Jv_MarkArray): Ditto.
	* prims.cc (_Jv_AllocObject): Ditto.
	(_Jv_NewObjectArray): Ditto.
	(_Jv_NewPrimArray): Ditto.
	(_Jv_Malloc): Ditto.
	(_Jv_Realloc): Ditto.
	(_Jv_MallocUnchecked): Ditto.
	(_Jv_divI): Ditto.
	(_Jv_remI): Ditto.
	(_Jv_divJ): Ditto.
	(_Jv_remJ): Ditto.

From-SVN: r33698

libjava/ChangeLog

+2000-05-05  Bryce McKinlay  <bryce@albatross.co.nz>
+
+	* java/lang/natClass.cc (isInstance): Use __builtin_expect.
+	(_Jv_IsAssignableFrom): Ditto.
+	(_Jv_IsInstanceOf): Ditto.
+	(_Jv_CheckCast): Ditto.
+	(_Jv_CheckArrayStore): Ditto.
+	* java/lang/Class.h (_Jv_InitClass): Ditto.	
+	* java/lang/natObject.cc (_Jv_MonitorEnter): __builtin_expect `false',
+	not `0'.
+	(notify): Ditto.
+	(notifyAll): Ditto.
+	(wait): Ditto.
+	(_Jv_MonitorExit): Ditto.
+	* boehm.cc (_Jv_MarkObj): Ditto.
+	(_Jv_MarkObj): Ditto.
+	(_Jv_MarkArray): Ditto.
+	* prims.cc (_Jv_AllocObject): Ditto.
+	(_Jv_NewObjectArray): Ditto.
+	(_Jv_NewPrimArray): Ditto.
+	(_Jv_Malloc): Ditto.
+	(_Jv_Realloc): Ditto.
+	(_Jv_MallocUnchecked): Ditto.
+	(_Jv_divI): Ditto.
+	(_Jv_remI): Ditto.
+	(_Jv_divJ): Ditto.
+	(_Jv_remJ): Ditto.
+
 2000-05-04  Tom Tromey  <tromey@cygnus.com>
 
 	* java/util/Locale.java (Locale): Don't explicitly check for

libjava/java/lang/Class.h

@@ -203,7 +203,7 @@ private:
   inline friend void 
   _Jv_InitClass (jclass klass)
   {
-    if (klass->state != JV_STATE_DONE)
+    if (__builtin_expect (klass->state != JV_STATE_DONE, false))
       klass->initializeClass ();
   }
 

libjava/java/lang/natClass.cc

@@ -622,7 +622,7 @@ java::lang::Class::isAssignableFrom (jclass klass)
 inline jboolean
 java::lang::Class::isInstance (jobject obj)
 {
-  if (! obj || isPrimitive ())
+  if (__builtin_expect (! obj || isPrimitive (), false))
     return false;
   _Jv_InitClass (this);
   return _Jv_IsAssignableFrom (this, JV_CLASS (obj));
@@ -923,7 +923,7 @@ _Jv_IsAssignableFrom (jclass target, jclass source)
     {
       _Jv_IDispatchTable *cl_idt = source->idt;
       _Jv_IDispatchTable *if_idt = target->idt;
-      if (if_idt == NULL)
+      if (__builtin_expect ((if_idt == NULL), false))
 	return false; // No class implementing TARGET has been loaded.    
       jshort cl_iindex = cl_idt->cls.iindex;
       if (cl_iindex <= if_idt->iface.ioffsets[0])
@@ -941,13 +941,16 @@ _Jv_IsAssignableFrom (jclass target, jclass source)
 jboolean
 _Jv_IsInstanceOf(jobject obj, jclass cl)
 {
-  return (obj ? _Jv_IsAssignableFrom (cl, JV_CLASS (obj)) : false);
+  if (__builtin_expect (!obj, false))
+    return false;
+  return (_Jv_IsAssignableFrom (cl, JV_CLASS (obj)));
 }
 
 void *
 _Jv_CheckCast (jclass c, jobject obj)
 {
-  if (obj != NULL && ! _Jv_IsAssignableFrom(c, JV_CLASS (obj)))
+  if (__builtin_expect 
+       (obj != NULL && ! _Jv_IsAssignableFrom(c, JV_CLASS (obj)), false))
     JvThrow (new java::lang::ClassCastException);
   return obj;
 }
@@ -960,7 +963,8 @@ _Jv_CheckArrayStore (jobject arr, jobject obj)
       JvAssert (arr != NULL);
       jclass elt_class = (JV_CLASS (arr))->getComponentType();
       jclass obj_class = JV_CLASS (obj);
-      if (! _Jv_IsAssignableFrom (elt_class, obj_class))
+      if (__builtin_expect 
+          (! _Jv_IsAssignableFrom (elt_class, obj_class), false))
 	JvThrow (new java::lang::ArrayStoreException);
     }
 }

libjava/java/lang/natObject.cc

@@ -172,10 +172,10 @@ java::lang::Object::sync_init (void)
 void
 java::lang::Object::notify (void)
 {
-  if (__builtin_expect (INIT_NEEDED (this), 0))
+  if (__builtin_expect (INIT_NEEDED (this), false))
     sync_init ();
   _Jv_SyncInfo *si = (_Jv_SyncInfo *) sync_info;
-  if (__builtin_expect (_Jv_CondNotify (&si->condition, &si->mutex), 0))
+  if (__builtin_expect (_Jv_CondNotify (&si->condition, &si->mutex), false))
     JvThrow (new IllegalMonitorStateException(JvNewStringLatin1 
                                               ("current thread not owner")));
 }
@@ -183,10 +183,10 @@ java::lang::Object::notify (void)
 void
 java::lang::Object::notifyAll (void)
 {
-  if (__builtin_expect (INIT_NEEDED (this), 0))
+  if (__builtin_expect (INIT_NEEDED (this), false))
     sync_init ();
   _Jv_SyncInfo *si = (_Jv_SyncInfo *) sync_info;
-  if (__builtin_expect (_Jv_CondNotifyAll (&si->condition, &si->mutex), 0))
+  if (__builtin_expect (_Jv_CondNotifyAll (&si->condition, &si->mutex), false))
     JvThrow (new IllegalMonitorStateException(JvNewStringLatin1 
                                               ("current thread not owner")));
 }
@@ -194,9 +194,9 @@ java::lang::Object::notifyAll (void)
 void
 java::lang::Object::wait (jlong timeout, jint nanos)
 {
-  if (__builtin_expect (INIT_NEEDED (this), 0))
+  if (__builtin_expect (INIT_NEEDED (this), false))
     sync_init ();
-  if (__builtin_expect (timeout < 0 || nanos < 0 || nanos > 999999, 0))
+  if (__builtin_expect (timeout < 0 || nanos < 0 || nanos > 999999, false))
     JvThrow (new IllegalArgumentException);
   _Jv_SyncInfo *si = (_Jv_SyncInfo *) sync_info;
   switch (_Jv_CondWait (&si->condition, &si->mutex, timeout, nanos))
@@ -226,10 +226,10 @@ jint
 _Jv_MonitorEnter (jobject obj)
 {
 #ifndef HANDLE_SEGV
-  if (__builtin_expect (! obj, 0))
+  if (__builtin_expect (! obj, false))
     JvThrow (new java::lang::NullPointerException);
 #endif
-  if (__builtin_expect (INIT_NEEDED (obj), 0))
+  if (__builtin_expect (INIT_NEEDED (obj), false))
     obj->sync_init ();
   _Jv_SyncInfo *si = (_Jv_SyncInfo *) obj->sync_info;
   return _Jv_MutexLock (&si->mutex);
@@ -241,7 +241,7 @@ _Jv_MonitorExit (jobject obj)
   JvAssert (obj);
   JvAssert (! INIT_NEEDED (obj));
   _Jv_SyncInfo *si = (_Jv_SyncInfo *) obj->sync_info;
-  if (__builtin_expect (_Jv_MutexUnlock (&si->mutex), 0))
+  if (__builtin_expect (_Jv_MutexUnlock (&si->mutex), false))
     JvThrow (new java::lang::IllegalMonitorStateException);
   return 0;
 }

libjava/prims.cc

@@ -328,7 +328,7 @@ _Jv_AllocObject (jclass c, jint size)
   _Jv_InitClass (c);
 
   jobject obj = (jobject) _Jv_AllocObj (size);
-  if (__builtin_expect (! obj, 0))
+  if (__builtin_expect (! obj, false))
     JvThrow (no_memory);
   *((_Jv_VTable **) obj) = c->vtable;
 
@@ -345,7 +345,7 @@ _Jv_AllocObject (jclass c, jint size)
 #ifdef ENABLE_JVMPI
   // Service JVMPI request.
 
-  if (__builtin_expect (_Jv_JVMPI_Notify_OBJECT_ALLOC != 0, 0))
+  if (__builtin_expect (_Jv_JVMPI_Notify_OBJECT_ALLOC != 0, false))
     {
       JVMPI_Event event;
 
@@ -372,7 +372,7 @@ _Jv_AllocObject (jclass c, jint size)
 jobjectArray
 _Jv_NewObjectArray (jsize count, jclass elementClass, jobject init)
 {
-  if (__builtin_expect (count < 0, 0))
+  if (__builtin_expect (count < 0, false))
     JvThrow (new java::lang::NegativeArraySizeException);
 
   JvAssert (! elementClass->isPrimitive ());
@@ -383,7 +383,7 @@ _Jv_NewObjectArray (jsize count, jclass elementClass, jobject init)
 
   // Check for overflow.
   if (__builtin_expect ((size_t) count > 
-			(SIZE_T_MAX - size) / sizeof (jobject), 0))
+			(SIZE_T_MAX - size) / sizeof (jobject), false))
     JvThrow (no_memory);
 
   size += count * sizeof (jobject);
@@ -392,7 +392,7 @@ _Jv_NewObjectArray (jsize count, jclass elementClass, jobject init)
   jclass clas = _Jv_FindArrayClass (elementClass, 0);
 
   obj = (jobjectArray) _Jv_AllocArray (size);
-  if (__builtin_expect (! obj, 0))
+  if (__builtin_expect (! obj, false))
     JvThrow (no_memory);
   obj->length = count;
   jobject* ptr = elements(obj);
@@ -416,7 +416,7 @@ jobject
 _Jv_NewPrimArray (jclass eltype, jint count)
 {
   int elsize = eltype->size();
-  if (__builtin_expect (count < 0, 0))
+  if (__builtin_expect (count < 0, false))
     JvThrow (new java::lang::NegativeArraySizeException ());
 
   JvAssert (eltype->isPrimitive ());
@@ -425,11 +425,11 @@ _Jv_NewPrimArray (jclass eltype, jint count)
 
   // Check for overflow.
   if (__builtin_expect ((size_t) count > 
-			(SIZE_T_MAX - size) / elsize, 0))
+			(SIZE_T_MAX - size) / elsize, false))
     JvThrow (no_memory);
 
   __JArray *arr = (__JArray*) _Jv_AllocObj (size + elsize * count);
-  if (__builtin_expect (! arr, 0))
+  if (__builtin_expect (! arr, false))
     JvThrow (no_memory);
   arr->length = count;
   // Note that we assume we are given zeroed memory by the allocator.
@@ -932,10 +932,10 @@ _Jv_SetMaximumHeapSize (const char *arg)
 void *
 _Jv_Malloc (jsize size)
 {
-  if (__builtin_expect (size == 0, 0))
+  if (__builtin_expect (size == 0, false))
     size = 1;
   void *ptr = malloc ((size_t) size);
-  if (__builtin_expect (ptr == NULL, 0))
+  if (__builtin_expect (ptr == NULL, false))
     JvThrow (no_memory);
   return ptr;
 }
@@ -943,10 +943,10 @@ _Jv_Malloc (jsize size)
 void *
 _Jv_Realloc (void *ptr, jsize size)
 {
-  if (__builtin_expect (size == 0, 0))
+  if (__builtin_expect (size == 0, false))
     size = 1;
   ptr = realloc (ptr, (size_t) size);
-  if (__builtin_expect (ptr == NULL, 0))
+  if (__builtin_expect (ptr == NULL, false))
     JvThrow (no_memory);
   return ptr;
 }
@@ -954,7 +954,7 @@ _Jv_Realloc (void *ptr, jsize size)
 void *
 _Jv_MallocUnchecked (jsize size)
 {
-  if (__builtin_expect (size == 0, 0))
+  if (__builtin_expect (size == 0, false))
     size = 1;
   return malloc ((size_t) size);
 }
@@ -975,7 +975,7 @@ _Jv_Free (void* ptr)
 jint
 _Jv_divI (jint dividend, jint divisor)
 {
-  if (__builtin_expect (divisor == 0, 0))
+  if (__builtin_expect (divisor == 0, false))
     _Jv_Throw (arithexception);
   
   if (dividend == (jint) 0x80000000L && divisor == -1)
@@ -987,7 +987,7 @@ _Jv_divI (jint dividend, jint divisor)
 jint
 _Jv_remI (jint dividend, jint divisor)
 {
-  if (__builtin_expect (divisor == 0, 0))
+  if (__builtin_expect (divisor == 0, false))
     _Jv_Throw (arithexception);
   
   if (dividend == (jint) 0x80000000L && divisor == -1)
@@ -999,7 +999,7 @@ _Jv_remI (jint dividend, jint divisor)
 jlong
 _Jv_divJ (jlong dividend, jlong divisor)
 {
-  if (__builtin_expect (divisor == 0, 0))
+  if (__builtin_expect (divisor == 0, false))
     _Jv_Throw (arithexception);
   
   if (dividend == (jlong) 0x8000000000000000LL && divisor == -1)
@@ -1011,7 +1011,7 @@ _Jv_divJ (jlong dividend, jlong divisor)
 jlong
 _Jv_remJ (jlong dividend, jlong divisor)
 {
-  if (__builtin_expect (divisor == 0, 0))
+  if (__builtin_expect (divisor == 0, false))
     _Jv_Throw (arithexception);
   
   if (dividend == (jlong) 0x8000000000000000LL && divisor == -1)