[Bug target/55690] New: On some targets thread_fence is not a compiler barrier when memmodel != MEMMODEL_SEQ_CST

[tomash.brechko at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55690



             Bug #: 55690

           Summary: On some targets thread_fence is not a compiler barrier

                    when memmodel != MEMMODEL_SEQ_CST

    Classification: Unclassified

           Product: gcc

           Version: 4.7.3

            Status: UNCONFIRMED

          Severity: normal

          Priority: P3

         Component: target

        AssignedTo: unassig...@gcc.gnu.org

        ReportedBy: tomash.brec...@gmail.com





At least for i386 and ia64 a call to expand_asm_memory_barrier() is needed when

memmodel != MEMMODEL_RELAXED.