1.1 --- a/src/cpu/sparc/vm/vm_version_sparc.cpp Thu Aug 25 20:29:30 2011 -0700
1.2 +++ b/src/cpu/sparc/vm/vm_version_sparc.cpp Fri Aug 26 08:52:22 2011 -0700
1.3 @@ -170,6 +170,16 @@
1.4 FLAG_SET_DEFAULT(UseCBCond, false);
1.5 }
1.6
1.7 + assert(BlockZeroingLowLimit > 0, "invalid value");
1.8 + if (has_block_zeroing()) {
1.9 + if (FLAG_IS_DEFAULT(UseBlockZeroing)) {
1.10 + FLAG_SET_DEFAULT(UseBlockZeroing, true);
1.11 + }
1.12 + } else if (UseBlockZeroing) {
1.13 + warning("BIS zeroing instructions are not available on this CPU");
1.14 + FLAG_SET_DEFAULT(UseBlockZeroing, false);
1.15 + }
1.16 +
1.17 #ifdef COMPILER2
1.18 // T4 and newer Sparc cpus have fast RDPC.
1.19 if (has_fast_rdpc() && FLAG_IS_DEFAULT(UseRDPCForConstantTableBase)) {
