--- a/src/hotspot/cpu/sparc/stubGenerator_sparc.cpp Thu Nov 23 15:51:06 2017 +0100
+++ b/src/hotspot/cpu/sparc/stubGenerator_sparc.cpp Wed Nov 22 18:58:01 2017 -0500
@@ -898,7 +898,9 @@
assert(sizeof(*ct->byte_map_base) == sizeof(jbyte), "adjust this code");
assert_different_registers(addr, count, tmp);
- Label L_loop;
+ Label L_loop, L_done;
+
+ __ cmp_and_br_short(count, 0, Assembler::equal, Assembler::pt, L_done); // zero count - nothing to do
__ sll_ptr(count, LogBytesPerHeapOop, count);
__ sub(count, BytesPerHeapOop, count);
@@ -914,6 +916,7 @@
__ subcc(count, 1, count);
__ brx(Assembler::greaterEqual, false, Assembler::pt, L_loop);
__ delayed()->add(addr, 1, addr);
+ __ BIND(L_done);
}
break;
case BarrierSet::ModRef: