[gnat] reuse of ASTs already constructed

[Robert Dewar]

Oliver Kellogg wrote:
> On 2009-05-04, at 07:36 +0200, Oliver Kellogg wrote:
>> Robert Dewar wrote:
>>>>>>> How about not doing the name expansion in-place but rather
>>>>>>> storing the expanded name in an extra node field?
>>> You could have a separate vector for expanded names I suppose ...
>> So be it. I will change the code to not overwrite the Name field
>> with the expanded name but rather store the expanded name in a
>> data structure separate from the Node.
>>
> 
> Luckily, this change was limited to the Exp_Dbug package body.
> FYI I am appending the diff.
> The new Q_E_Name array holds the Name_Id for the expanded name
> of a given entity. The implementation as a fixed array is
> preliminary and I would appreciate suggestions on a better
> data structure to use.

use a table .. we never use fixed length arrays in the compiler
> 
> Oliver
> 
> 
>