* trans.c (gfc_allocate_using_lib,gfc_deallocate_with_status):
Introducing __asm__ __volatile__ ("":::"memory")
after image control statements.
* trans-stmt.c (gfc_trans_sync, gfc_trans_event_post_wait,
gfc_trans_lock_unlock, gfc_trans_critical): Ditto.
* trans-intrinsic.c (gfc_conv_intrinsic_caf_get,
conv_caf_send): Introducing __asm__ __volatile__ ("":::"memory")
after send, before get and around sendget.