Re: GCSE memory usage

[Gabriel Dos_Reis <Gabriel dot Dos_Reis at sophia dot inria dot fr>]

Marc Espie <espie@quatramaran.ens.fr> writes:

| In article <8591.940819795@upchuck> you write:
| >I disagree, unless you can find some way that doesn't severely impact normal
| >code.  If we can't find an implementation that does both reasonably, then we
| >should drop in some heuristics to simply not perform such expensive
| >optimizations on absurd code.  Really.  15kbbs, 264k regs.  That's absurd.
| 
| This is not absurb code at all. This is the code you get if you try to
| migrate old Fortran-like computations to advanced expression-templates
| libraries.
| 
| Do state that you don't want to support such code, but don't label it as
| `absurb'. Such code is going to get more and more common, as modern C++
| libraries spread... unless of course, enough buggy compilers go belly up
| on them.
| 
| Right now, expression templates are about the only way to get `expert'
| optimizations on high-level C++ code that make it feasible to reach a better
| level of optimization than Fortran 90 code.

Not to mention that part of libstdc++-v3 uses intensive
expression-template like code.   Not just because GCC is unable to
provide reasonable support for such programs they should be labelled
'absurd'. 

-- Gaby