[Bug fortran/69815] Don't always use BLOCKS for front-end optimization variables

[dominiq at lps dot ens.fr]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69815

Dominique d'Humieres <dominiq at lps dot ens.fr> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |WAITING
   Last reconfirmed|                            |2016-02-16
     Ever confirmed|0                           |1

--- Comment #1 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> Currently, when the front-end optimization passes creates a temporary
> variable, this is put into a BLOCK.

What was the rationale for this choice?

> This has led to some ICEs, most of which were resolved by simply not
> doing the optimization in question.

Is there any open PR blocked by this one? If yes, could you please mark them as
blocked?

> However, it would be better to put the variable into the
> main namespace if this is possible for such cases, if possible.

Agreed.