Dear Alessandro,
Alessandro Fanfarillo wrote:
so far a "sync memory" statement is translated into a local
"__sync_synchronize ()".
The attached draft patch delegates the action for sync memory (when
-fcoarray=lib is used) to the external function
_gfortran_caf_sync_memory() implemented in the OpenCoarrays library.
Looks good to me. However, you should add a test case with 'dg-options
"-fdump-tree-original -fcoarray=lib"' to check that this works; cf.
gcc/testsuite/gfortran.dg/coarray*.f90 for examples.
And you have to provide a stub implementation in
libgfortran/caf/{libcaf.h,single.c}.
Tobias
PS: I wonder whether it makes sense to remove the __sync_synchronize for
-fcoarray=single and replace it by the equivalent to "|asm volatile (""
: : : "memory")". It almost certainly does.
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