https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68829
Thomas Koenig <tkoenig at gcc dot gnu.org> changed:
What |Removed |Added
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CC| |tkoenig at gcc dot gnu.org
--- Comment #3 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
> > But it's also that you are asking for it with -Ofast. Maybe the frontend
> > should have a switch to specifiy a size limit?
>
> Good idea, any volunteer?
It seems that -fmax-stack-var-size=N does not override -Ofast. Maybe
it should.
ig25@linux-fd1f:/tmp> cat a.f90
real, dimension(10**6) :: a
call random_number(a)
write (*,*) a
end
ig25@linux-fd1f:/tmp> gfortran -fdump-tree-original -Ofast
-fmax-stack-var-size=10000 a.f90
ig25@linux-fd1f:/tmp> head a.f90.003t.original
MAIN__ ()
{
static real(kind=4) a[1000000];
{
struct array1_real(kind=4) parm.0;
parm.0.dtype = 281;
parm.0.dim[0].lbound = 1;
parm.0.dim[0].ubound = 1000000;
ig25@linux-fd1f:/tmp>
