* cse.c: Update comments.

    * cse.c: Update comments.
        (cse_insn): When converting a conditional/computed jump into
        an unconditional jump, always make sure a BARRIER immediately
        follows the converted jump.  Do not delete unreachable code.
        (cse_basic_block): Do not delete unreachable code.
        * toplev.c (rest_of_compilation): Move call to
        delete_trivially_dead_insns after the conditional call to
        jump_optimize.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@29665 138bc75d-0d04-0410-961f-82ee72b054a4