src/cpu/x86/vm/c1_LinearScan_x86.hpp

rev 8344 : 8076276: Add support for AVX512
Reviewed-by: kvn, roland
Contributed-by: michael.c.berg@intel.com

*** 83,94 ****
  #ifndef PRODUCT
          if (TraceLinearScanLevel >= 2) {
            tty->print_cr("killing XMMs for trig");
          }
  #endif
          int op_id = op->id();
!         for (int xmm = 0; xmm < FrameMap::nof_caller_save_xmm_regs; xmm++) {
            LIR_Opr opr = FrameMap::caller_save_xmm_reg_at(xmm);
            add_temp(reg_num(opr), op_id, noUse, T_ILLEGAL);
          }
        }
        break;
--- 83,95 ----
  #ifndef PRODUCT
          if (TraceLinearScanLevel >= 2) {
            tty->print_cr("killing XMMs for trig");
          }
  #endif
+         int num_caller_save_xmm_regs = FrameMap::get_num_caller_save_xmms();
          int op_id = op->id();
!         for (int xmm = 0; xmm < num_caller_save_xmm_regs; xmm++) {
            LIR_Opr opr = FrameMap::caller_save_xmm_reg_at(xmm);
            add_temp(reg_num(opr), op_id, noUse, T_ILLEGAL);
          }
        }
        break;
*** 98,115 ****
  
  
  // Implementation of LinearScanWalker
  
  inline bool LinearScanWalker::pd_init_regs_for_alloc(Interval* cur) {
    if (allocator()->gen()->is_vreg_flag_set(cur->reg_num(), LIRGenerator::byte_reg)) {
      assert(cur->type() != T_FLOAT && cur->type() != T_DOUBLE, "cpu regs only");
      _first_reg = pd_first_byte_reg;
      _last_reg = FrameMap::last_byte_reg();
      return true;
    } else if ((UseSSE >= 1 && cur->type() == T_FLOAT) || (UseSSE >= 2 && cur->type() == T_DOUBLE)) {
      _first_reg = pd_first_xmm_reg;
!     _last_reg = pd_last_xmm_reg;
      return true;
    }
  
    return false;
  }
--- 99,120 ----
  
  
  // Implementation of LinearScanWalker
  
  inline bool LinearScanWalker::pd_init_regs_for_alloc(Interval* cur) {
+   int last_xmm_reg = pd_last_xmm_reg;
+   if (UseAVX < 3) {
+     last_xmm_reg = pd_first_xmm_reg + (pd_nof_xmm_regs_frame_map / 2) - 1;
+   }
    if (allocator()->gen()->is_vreg_flag_set(cur->reg_num(), LIRGenerator::byte_reg)) {
      assert(cur->type() != T_FLOAT && cur->type() != T_DOUBLE, "cpu regs only");
      _first_reg = pd_first_byte_reg;
      _last_reg = FrameMap::last_byte_reg();
      return true;
    } else if ((UseSSE >= 1 && cur->type() == T_FLOAT) || (UseSSE >= 2 && cur->type() == T_DOUBLE)) {
      _first_reg = pd_first_xmm_reg;
!     _last_reg = last_xmm_reg;
      return true;
    }
  
    return false;
  }