* stupid.c: Die die die.
* Makefile.in (OBJS): Remove stupid.o.
(stupid.o): Likewise.
* except.c (emit_eh_context): Don't emit USEs for stupid.
* explow.c (probe_stack_range): Likewise.
* flags.h (obey_regdecls): Remove.
* flow.c (find_basic_blocks): Don't run try_merge_blocks
when not optimizing.
(life_analysis): Limit data collection when not optimizing.
(mark_regs_live_at_end): Always mark the return value registers.
(mark_used_regs): Remove dummy RETURN case.
(print_rtl_with_bb): Don't consult obey_regdecls.
* function.c (use_variable, use_variable_after): Remove.
(assign_parms): Consult optimize not obey_regdecls.
(expand_function_start): Don't emit USEs for stupid.
(expand_function_end): Likewise.
* global.c (build_insn_chain): Export.
* integrate.c (expand_inline_function): Kill return-value USE
handling code.
* jump.c (jump_optimize_1): Do simple jump optimizations and
dead code elimination.
(calculate_can_reach_end): Remove check_deleted argument.
(delete_insn): Patch out insns even when not optimizing.
* local-alloc.c (block_alloc): Don't do tying when not optimizing.
* rtl.h (use_variable, use_variable_after): Remove declarations.
(build_insn_chain): Declare.
* stmt.c (expand_value_return): Don't emit USEs for stupid.
(expand_end_bindings): Likewise.
(expand_decl): Likewise. Consult optimize not obey_regdecls.
* toplev.c (obey_regdecls): Remove.
(rest_of_compilation): Don't set it. Kill stupid in favour of
flow1, local-alloc, and reload.
(main): Don't set obey_regdecls.
* config/nextstep.c (handle_pragma): Likewise.
* alpha/alpha.md (allocate_stack): Don't emit USEs for stupid.
* arm/arm.h (CONDITIONAL_REGISTER_USAGE): Don't fix reg 0 for stupid.