[Bug libstdc++/55233] New: libstdc++ atomic does not support hle_acquire/release

[andi-gcc at firstfloor dot org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55233



             Bug #: 55233

           Summary: libstdc++ atomic does not support hle_acquire/release

    Classification: Unclassified

           Product: gcc

           Version: 4.8.0

            Status: UNCONFIRMED

          Severity: normal

          Priority: P3

         Component: libstdc++

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

        ReportedBy: andi-...@firstfloor.org

                CC: kyuk...@gcc.gnu.org

            Target: x86_64-linux





The underlying __atomic_* C intrinsics support TSX HLE ACQUIRE/RELEASE, but

libstdc++ atomic does not define the enum values or mask the bits.



However extending the libstdc++ enum may run into a variant of PR55139