[Bug middle-end/51443] New: [trans-mem] internal compiler error in expand_block_tm of trans-mem.c

[patrick.marlier at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51443

             Bug #: 51443
           Summary: [trans-mem] internal compiler error in expand_block_tm
                    of trans-mem.c
    Classification: Unclassified
           Product: gcc
           Version: 4.7.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: middle-end
        AssignedTo: unassig...@gcc.gnu.org
        ReportedBy: patrick.marl...@gmail.com
                CC: al...@gcc.gnu.org, r...@gcc.gnu.org,
                    torv...@gcc.gnu.org


Created attachment 26011
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=26011
testcase with -gnu-tm -O1

I report this bug which is very close to some previous one (PR46269/PR47606).
In this testcase, it fails to detect the block as irrevocable due to the asm
and thus failed in expand_block_tm. Actually the way to mark a block
irrevocable in a transaction_callable is a bit obscure to me.

Thanks.

Patrick Marlier.