* Makefile.in (cfglayout.o): Depend on TARGET_H.
        * cfglayout.c: Include target.h.
        (cfg_layout_can_duplicate_bb_p): Check targetm.cannot_copy_insn_p.
        * target-def.h (TARGET_CANNOT_COPY_INSN_P): New.
        * target.h (struct gcc_target): Add cannot_copy_insn_p.

        * config/alpha/alpha.c (alpha_cannot_copy_insn_p): New.
        (TARGET_CANNOT_COPY_INSN_P): New.
        (override_options): Revert 2003-02-08 hack.

From-SVN: r62955