* flow.c (find_basic_blocks): Calc upper bound for extra nops in

        max_uids_for_flow.
        (find_basic_blocks_1): Add a nop to the end of a basic block when
        a trailing call insn does not have abnormal control flow.
        * gcse.c (pre_transpout): New variable.
        (alloc_pre_mem, free_pre_mem, dump_pre_data): Bookkeeping for it.
        (compute_pre_transpout): Calculate it.
        (compute_pre_ppinout): Use it to eliminate impossible placements
        due to abnormal control flow through calls.
        (compute_pre_data): Call compute_pre_transpout.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@22907 138bc75d-0d04-0410-961f-82ee72b054a4