C constant expressions proposals

[Mark Mitchell]

Richard Kenner wrote:
>     In fact, I consider all diagnostic outputs other than "internal
>     error", "out of memory", etc. from anything other than the front end
>     to be bugs. :-)
> 
> I assume you also mean to exclude warnings here, right?  Undefined variables
> are best detected by the middle-end, for example.

I disagree, but we've had that debate before, so it seems boring to have 
it again.  The bottom line is that optimizer people always think that 
the middle-end should do this kind of thing; people who do other things 
don't necessarily agree.

> Another example are incorrect asm statements: the front end shouldn't be
> in the business of validating them.

Perhaps.

-- 
Mark Mitchell
CodeSourcery, LLC
mark@codesourcery.com