41 
  42   if (UseAVX < 3) {
  43     int delta = XMMRegisterImpl::max_slots_per_register * XMMRegisterImpl::number_of_registers;
  44     int bottom = ConcreteRegisterImpl::max_fpr;
  45     int top = bottom + delta;
  46     int middle = bottom + (delta / 2);
  47     int xmm_slots = XMMRegisterImpl::max_slots_per_register;
  48     int lower = xmm_slots / 2;
  49     // mark bad every register that we cannot get to if AVX less than 3, we have all slots in the array
  50     // Note: vm2opto is allocated to ConcreteRegisterImpl::number_of_registers
  51     for (int i = bottom; i < middle; i += xmm_slots) {
  52       for (OptoReg::Name j = OptoReg::Name(i + lower); j<OptoReg::Name(i + xmm_slots); j = OptoReg::add(j, 1)) {
  53         OptoReg::invalidate(j);
  54       }
  55     }
  56     // mark the upper zmm bank bad and all the mask registers bad in this case
  57     for (OptoReg::Name i = OptoReg::Name(middle); i<OptoReg::Name(_last_Mach_Reg - 1); i = OptoReg::add(i, 1)) {
  58       OptoReg::invalidate(i);
  59     }
  60   }


  61 }

  41 
  42   if (UseAVX < 3) {
  43     int delta = XMMRegisterImpl::max_slots_per_register * XMMRegisterImpl::number_of_registers;
  44     int bottom = ConcreteRegisterImpl::max_fpr;
  45     int top = bottom + delta;
  46     int middle = bottom + (delta / 2);
  47     int xmm_slots = XMMRegisterImpl::max_slots_per_register;
  48     int lower = xmm_slots / 2;
  49     // mark bad every register that we cannot get to if AVX less than 3, we have all slots in the array
  50     // Note: vm2opto is allocated to ConcreteRegisterImpl::number_of_registers
  51     for (int i = bottom; i < middle; i += xmm_slots) {
  52       for (OptoReg::Name j = OptoReg::Name(i + lower); j<OptoReg::Name(i + xmm_slots); j = OptoReg::add(j, 1)) {
  53         OptoReg::invalidate(j);
  54       }
  55     }
  56     // mark the upper zmm bank bad and all the mask registers bad in this case
  57     for (OptoReg::Name i = OptoReg::Name(middle); i<OptoReg::Name(_last_Mach_Reg - 1); i = OptoReg::add(i, 1)) {
  58       OptoReg::invalidate(i);
  59     }
  60   }
  61 
  62   SuperWordLoopUnrollAnalysis = true;
  63 }