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diff src/share/vm/memory/oopFactory.cpp @ 3961:a92cdbac8b9e

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7081933: Use zeroing elimination optimization for large array Summary: Don't zero new typeArray during runtime call if the allocation is followed by arraycopy into it. Reviewed-by: twisti
author kvn
date Mon, 26 Sep 2011 10:24:05 -0700
parents c7f3d0b4570f
children 49036505ab5f
line wrap: on
line diff
--- a/src/share/vm/memory/oopFactory.cpp	Sun Sep 25 16:03:29 2011 -0700
+++ b/src/share/vm/memory/oopFactory.cpp	Mon Sep 26 10:24:05 2011 -0700
@@ -77,7 +77,14 @@
 typeArrayOop oopFactory::new_typeArray(BasicType type, int length, TRAPS) {
   klassOop type_asKlassOop = Universe::typeArrayKlassObj(type);
   typeArrayKlass* type_asArrayKlass = typeArrayKlass::cast(type_asKlassOop);
-  typeArrayOop result = type_asArrayKlass->allocate(length, THREAD);
+  typeArrayOop result = type_asArrayKlass->allocate_common(length, true, THREAD);
+  return result;
+}
+
+typeArrayOop oopFactory::new_typeArray_nozero(BasicType type, int length, TRAPS) {
+  klassOop type_asKlassOop = Universe::typeArrayKlassObj(type);
+  typeArrayKlass* type_asArrayKlass = typeArrayKlass::cast(type_asKlassOop);
+  typeArrayOop result = type_asArrayKlass->allocate_common(length, false, THREAD);
   return result;
 }