re PR target/56858 (alpha looks for NOTE_INSN_EH_REGION notes that cannot exist)

re PR target/56858 (alpha looks for NOTE_INSN_EH_REGION notes that cannot exist)

	PR target/56858
	* config/alpha/alpha.c: Include tree-pass.h, context.h
	and pass_manager.h.
	(pass_data_handle_trap_shadows): New pass.
	(pass_handle_trap_shadows::gate): New pass gate function.
	(make_pass_handle_trap_shadows): New function.
	(rest_of_handle_trap_shadows): Ditto.

	(alpha_align_insns_1): Rename from alpha_align_insns.
	(pass_data_align_insns): New pass.
	(pass_align_insns::gate): New pass gate function.
	(make_pass_aling_insns): New function.
	(rest_of_align_insns): Ditto.
	(alpha_align_insns): Ditto.

	(alpha_option_override): Declare handle_trap_shadows info
	and align_insns_info.  Register handle_trap_shadows and align_insns
	passes here.
	(alpha_reorg): Do not call alpha_trap_shadows and
	alpha_align_insn from here.

	(alpha_pad_function_end): Do not skip BARRIERs.

From-SVN: r212449