Remove the RTL inliner

[Steven Bosscher <stevenb at suse dot de>(by way of Steven Bosscher <stevenb at suse dot de>)]

This removes the RTL inliner.  There are still other cleanups to do,
like moving things out of integrate, and perhaps remove unroll.c to
clean up even more integrate.? artifacts.  And of course, the hated
really_no_inline and flag_inline_trees ugliness.

I love patches with many minuses... diffstat:
 30 files changed, 8 insertions(+), 2194 deletions(-), 230 modifications(!)

Bootstrapped and tested c,c++, and java, and in an older incarnation
also objc and f95.  OK?

	* calls.c (try_to_integrate): Remove.
	(expand_call): Do not try to expand calls inline.
	* dbxout.c (dbxout_symbol_location): Don't mention integrate.c
	in comments.
	* expmed.c (extract_fixed_bit_field): Always propagate the
	target for the shift if it is a REG.
	* expr.c (emit_move_insn_1): Don't generate inline warnings.
	(expand_expr_real_1): Don't look at inline_function_decl.
	Don't output inlined functions here.
	* expr.h (expand_inline_function): Remove prototype.
	* emit-rtl.c (copy_most_rtx): Don't copy the integrated flag.
	Copy the new return_val flag.
	* final.c (final): Don't look at RTX_INTEGRATED_P.
	* cfgrtl.c (create_basic_block_structure): Likewise.
	* haifa-sched.c (priority): Likewise.
	(restore_line_notes): Likewise.
	* function.c (inline_function_decl): Remove.
	(put_var_into_stack): Don't use it.
	(fix_lexical_addr): Likewise.
	* function.c (inline_function_decl): Remove extern declaration.
	* genattrtab.c (ATTR_PERMANENT_P): Use the return_val flag
	instead of the integrated flag.
	* integrate.c (INTEGRATE_THRESHOLD): Remove.
	(setup_initial_hard_reg_value_integration): Likewise.
	(initialize_for_inline): Likewise.
	(note_modified_parmregs): Likewise.
	(integrate_parm_decls): Likewise.
	(process_reg_param): Likewise.
	(save_parm_insns): Likewise.
	(copy_insn_list): Likewise.
	(copy_insn_notes): Likewise.
	(compare_blocks): Likewise.
	(find_block): Likewise.
	(inlining): Likewise.
	(function_cannot_inline_p): Likewise.
	(parmdecl_map): Likewise.
	(in_nonparam_insns): Likewise.
	(save_for_inline): Likewise.
	(FIXED_BASE_PLUS): Likewise.
	(expand_inline_function): Likewise.
	(copy_rtx_and_substitute): Don't look at map->integrating,
	map->inline_target, and inlining, since we are never copying
	for integrating.
	Don't abort on RTX_INTEGRATED_P.
	(old_fun): Remove.
	(output_inline_function): Remove.
	* integrate.h (struct inline_map): Remove fields integrating,
	block_map, leaf_reg_map, inline_target, and local_return_label.
	* print-rtl.c (print_rtx): Don't print the integrated flag.
	Print the return_val flag.
	* rtl.h (struct rtx_def): Replace the integrated flag with the
	return_val flag.
	(RTX_INTEGRATED_P): Remove.
	(notice_rtl_inlining_of_deferred_constant): Remove prototype.
	* stmt.c (force_label_rtx): Don't look at inline_function_decl.
	* toplev.c (rest_of_handle_inlining): Remove.
	(rest_of_compilation): Don't call it, and never jump to exit.
	Call convert_from_eh_region_ranges.
	(wrapup_global_declarations): Don't output nested inlined functions.
	* tree.h (function_cannot_inline_p): Remove prototype.
	(save_for_inline): Ditto.
	(output_inline_function): Ditto.
	* unroll.c (unroll_loop): Don't clear map->inline_target.
	* varasm.c (notice_rtl_inlining_of_deferred_constant): Remove.

	* system.h: Poison INTEGRATE_THRESHOLD.
	* config/avr/avr.h: Remove define.
	* config/ip2k/ip2k.h: Likewise.

	* unwind-sjlj.c (uw_install_context): Make a proper static inline
	function.

cp/
	* decl.c (poplevel): Don't output nested inline functions.

java/
	* decl.c (poplevel): Don't output nested inline functions.

doc/
	* rtl.texi: Remove references to the integrated flag.
	* tm.texi: Remove documentation of INTEGRATE_THRESHOLD.

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