src/cpu/x86/vm/c1_LinearScan_x86.cpp

*** 784,845 ****
  
        op2->set_fpu_stack_size(sim()->stack_size());
        break;
      }
  
-     case lir_log10: {
-       // log and log10 need one temporary fpu stack slot, so
-       // there is one temporary registers stored in temp of the
-       // operation. the stack allocator must guarantee that the stack
-       // slots are really free, otherwise there might be a stack
-       // overflow.
-       assert(right->is_illegal(), "must be");
-       assert(left->is_fpu_register(), "must be");
-       assert(res->is_fpu_register(), "must be");
-       assert(op2->tmp1_opr()->is_fpu_register(), "must be");
- 
-       insert_free_if_dead(op2->tmp1_opr());
-       insert_free_if_dead(res, left);
-       insert_exchange(left);
-       do_rename(left, res);
- 
-       new_left = to_fpu_stack_top(res);
-       new_res = new_left;
- 
-       op2->set_fpu_stack_size(sim()->stack_size());
-       assert(sim()->stack_size() <= 7, "at least one stack slot must be free");
-       break;
-     }
- 
- 
-     case lir_tan: {
-       // sin, cos and exp need two temporary fpu stack slots, so there are two temporary
-       // registers (stored in right and temp of the operation).
-       // the stack allocator must guarantee that the stack slots are really free,
-       // otherwise there might be a stack overflow.
-       assert(left->is_fpu_register(), "must be");
-       assert(res->is_fpu_register(), "must be");
-       // assert(left->is_last_use(), "old value gets destroyed");
-       assert(right->is_fpu_register(), "right is used as the first temporary register");
-       assert(op2->tmp1_opr()->is_fpu_register(), "temp is used as the second temporary register");
-       assert(fpu_num(left) != fpu_num(right) && fpu_num(right) != fpu_num(op2->tmp1_opr()) && fpu_num(op2->tmp1_opr()) != fpu_num(res), "need distinct temp registers");
- 
-       insert_free_if_dead(right);
-       insert_free_if_dead(op2->tmp1_opr());
- 
-       insert_free_if_dead(res, left);
-       insert_exchange(left);
-       do_rename(left, res);
- 
-       new_left = to_fpu_stack_top(res);
-       new_res = new_left;
- 
-       op2->set_fpu_stack_size(sim()->stack_size());
-       assert(sim()->stack_size() <= 6, "at least two stack slots must be free");
-       break;
-     }
- 
      default: {
        assert(false, "missed a fpu-operation");
      }
    }
  
--- 784,793 ----