unroll.c (unroll_loop, [...]): Replace abort with gcc_assert and gcc_unreachable.

unroll.c (unroll_loop, [...]): Replace abort with gcc_assert and gcc_unreachable.

	* unroll.c (unroll_loop, calculate_giv_inc, initial_reg_note_copy,
	final_reg_note_copy, copy_loop_body, fold_rtx_mult_add,
	final_giv_value, loop_iterations): Replace abort with gcc_assert and
	gcc_unreachable.
	* value-prof.c (rtl_find_values_to_profile,
	rtl_register_value_prof_hooks, tree_find_values_to_profile,
	tree_value_profile_transformations, tree_register_value_prof_hooks):
	Likewise.
	* varasm.c (named_section_flags, named_section, make_decl_rtl,
	asm_emit_uninitialised, assemble_external, assemble_integer,
	decode_addr_const, const_hash_1, compare_constant, copy_constant,
	force_const_mem, output_constant_pool_2, output_constant_pool_1,
	output_constant, output_constructor, supports_one_only,
	make_decl_one_only, decl_tls_model, default_no_named_section,
	default_elf_select_section_1, default_unique_section_1): Likewise.
	* varray.c (varray_copy): Likewise.
	* var-tracking.c (stack_adjust_offset_pre_post, variable_htab_free,
	variable_union, dataflow_set_different_2, count_uses,
	variable_was_changed, set_frame_base_location, set_variable_part,
	emit_note_insn_var_location, vt_emit_notes,
	vt_add_function_parameters): Likewise.
	* vec.c (vec_gc_o_reserve): Likewise.
	* vmsdbgout.c (addr_const_to_string): Likewise.

From-SVN: r87286