gcc/
	* defaults.h (HAVE_epilogue, gen_epilogue): Delete.
	* target-insns.def (epilogue, prologue, sibcall_prologue): New
	targetm instruction patterns.
	* alias.c (init_alias_analysis): Use them instead of HAVE_*/gen_*
	interface.
	* calls.c (expand_call): Likewise.
	* cfgrtl.c (cfg_layout_finalize): Likewise.
	* df-scan.c (df_get_entry_block_def_set): Likewise.
	(df_get_exit_block_use_set): Likewise.
	* dwarf2cfi.c (pass_dwarf2_frame::gate): Likewise.
	* final.c (final_start_function): Likewise.
	* function.c (thread_prologue_and_epilogue_insns): Likewise.
	(reposition_prologue_and_epilogue_notes): Likewise.
	* reorg.c (find_end_label): Likewise.
	* toplev.c (process_options): Likewise.

From-SVN: r225208