[cross-posting to gcc-help, we may have other ideas and opinions there]
Is there a way to tell gfortran to allign all variables and
datastructures
(like arrays) at 16-byte boundaries? Not only the static ones but even
if I do an ALLOCATE(A(N,M)) I want the start of the array to be on an
adress whichs last 4 bits are "0000"?
gfortran translates ALLOCATE calls using malloc(), so if your system
malloc() returns correctly aligned memory, it should work out-of-the-
box. See http://gcc.gnu.org/bugzilla/show_bug.cgi?id=24261 for some
discussion about this.
Why am I asking this? On the Cell BE architectures the DMA-transfers
from main memory to the LS of the SPU's must be 16-byte aligned. I am
writing a library which gets called by Fortran and performs the
caclulations on the SPU's. So if I want to get the data into the Local
Stores it has to be 16-byte aligned.
