transactional memory support for mips target

[Cherry Vanc]

I compiled gcc for mips target with --enable-threads and compiled a
program with transactional memory constructs and -fgnu-tm, but I get
'error: unrecognized command line option '-pthread' '.

Some references on mailing lists suggest that there is tm support for
mips target (contrary to the gcc 4.7 release notes
https://gcc.gnu.org/gcc-4.7/changes.html)

Can someone confirm if there is tm support for mips target ? If so,
some pointers on how to enable it will be very helpful.

Thanks