Steve Kargl wrote:
I have no idea what you and Toon are discussing. These
options are not used in the gfortran frontend and have never
been used. Looking at the g77 manual suggests that
-fargument-noalias-global is a holdover from g77, and as such
it should be removed.
It is the Fortran programmer's responsibility to properly
address possible aliasing issues.
We are discussing how the GCC middle end can best implement the
restrictions the Fortran language puts on the programmer to prevent
aliasing (i.e., having two or more names pointing to the same memory).
One of the more important restrictions is that two dummy arguments to a
subprogram cannot point to the same memory if one is written to.
I hope this helps,
--
Toon Moene - e-mail: t...@moene.org (*NEW*) - phone: +31 346 214290
Saturnushof 14, 3738 XG Maartensdijk, The Netherlands
At home: http://moene.org/~toon/
Progress of GNU Fortran: http://gcc.gnu.org/gcc-4.4/changes.html
