src/hotspot/cpu/sparc/macroAssembler_sparc.cpp

*** 2784,2794 ****
     orcc(Rbox, Rscratch, G0);
     brx(Assembler::zero, false, Assembler::pt, done);
     delayed()->
     st_ptr(G0, Address(Rmark, OM_OFFSET_NO_MONITOR_VALUE_TAG(owner)));
  
!    if (os::is_MP()) { membar(StoreLoad); }
     // Check that _succ is (or remains) non-zero
     ld_ptr(Address(Rmark, OM_OFFSET_NO_MONITOR_VALUE_TAG(succ)), Rscratch);
     andcc(Rscratch, Rscratch, G0);
     brx(Assembler::notZero, false, Assembler::pt, done);
     delayed()->andcc(G0, G0, G0);
--- 2784,2794 ----
     orcc(Rbox, Rscratch, G0);
     brx(Assembler::zero, false, Assembler::pt, done);
     delayed()->
     st_ptr(G0, Address(Rmark, OM_OFFSET_NO_MONITOR_VALUE_TAG(owner)));
  
!    membar(StoreLoad);
     // Check that _succ is (or remains) non-zero
     ld_ptr(Address(Rmark, OM_OFFSET_NO_MONITOR_VALUE_TAG(succ)), Rscratch);
     andcc(Rscratch, Rscratch, G0);
     brx(Assembler::notZero, false, Assembler::pt, done);
     delayed()->andcc(G0, G0, G0);