* emit-rtl.c (gen_const_mem): New.
        * rtl.h (gen_const_mem): Declare.
        * expr.c (do_tablejump): Use it.
        * varasm.c (force_const_mem): Likewise.
        * config/darwin.c (machopic_indirect_data_reference): Likewise.
        (machopic_legitimize_pic_address): Likewise.
        * config/arm/arm.c (legitimize_pic_address): Likewise.
        * config/i386/i386.c (legitimize_pic_address): Likewise.
        (legitimize_tls_address): Likewise.
        * config/ia64/ia64.c (ia64_expand_tls_address): Likewise.
        * config/ia64/ia64.md (load_fptr): Likewise.
        * config/m32r/m32r.c (m32r_legitimize_pic_address): Likewise.
        * config/pa/pa.c (legitimize_pic_address): Likewise.
        * config/rs6000/rs6000.c (rs6000_legitimize_tls_address): Likewise.
        (rs6000_emit_move): Likewise.
        * config/s390/s390.c (legitimize_pic_address): Likewise.
        (legitimize_tls_address): Likewise.
        * config/s390/s390.md (casesi): Likewise.
        * config/sh/sh.c (sh_reorg): Likewise.
        * config/sparc/sparc.c (legitimize_pic_address): Likewise.
        * config/v850/v850.md (casesi): Likewise.

        * config/darwin.c (machopic_indirect_call_target): Set MEM_NOTRAP_P.
        * config/sh/sh.c (prepare_move_operands): Remove incorrect
        use of MEM_READONLY_P.

From-SVN: r86207