Merger of git branch "gimple-classes-v2-option-3"

gcc/ChangeLog:
	Merger of git branch "gimple-classes-v2-option-3".

	* ChangeLog.gimple-classes: New.

	* coretypes.h (struct gcond): Add forward decl.
	(struct gdebug): Likewise.
	(struct ggoto): Likewise.
	(struct glabel): Likewise.
	(struct gswitch): Likewise.
	(struct gassign): Likewise.
	(struct gasm): Likewise.
	(struct gcall): Likewise.
	(struct gtransaction): Likewise.
	(struct greturn): Likewise.
	(struct gbind): Likewise.
	(struct gcatch): Likewise.
	(struct geh_filter): Likewise.
	(struct geh_mnt): Likewise.
	(struct geh_else): Likewise.
	(struct gresx): Likewise.
	(struct geh_dispatch): Likewise.
	(struct gphi): Likewise.
	(struct gtry): Likewise.
	(struct gomp_atomic_load): Likewise.
	(struct gomp_atomic_store): Likewise.
	(struct gomp_continue): Likewise.
	(struct gomp_critical): Likewise.
	(struct gomp_for): Likewise.
	(struct gomp_parallel): Likewise.
	(struct gomp_task): Likewise.
	(struct gomp_sections): Likewise.
	(struct gomp_single): Likewise.
	(struct gomp_target): Likewise.
	(struct gomp_teams): Likewise.

	* doc/gimple.texi (Class hierarchy of GIMPLE statements): Update
	for renaming of gimple subclasses.

	* gdbhooks.py: Update.

	* gimple-iterator.c (gsi_for_phi): New.
	(gsi_start_phis): Strengthen return type from gimple_stmt_iterator
	to gphi_iterator.
	* gimple-iterator.h (struct gphi_iterator): New subclass of
	gimple_stmt_iterator.
	(gsi_for_phi): New prototype.
	(gsi_start_phis): Strengthen return type from gimple_stmt_iterator
	to gphi_iterator.
	(gsi_next_nonvirtual_phi): Strengthen param from
	gimple_stmt_iterator * to gphi_iterator *, and local "phi" from
	gimple to gphi *.

	* gsstruct.def: Update for renamings of classes.

	* gimple.c (gimple_build_return): Strengthen return type from
	gimple to greturn *.
	(gimple_call_reset_alias_info): Strengthen param to gcall *.
	(gimple_build_call_1): Strengthen return type from gimple to
	gcall *.
	(gimple_build_call_vec): Likewise.
	(gimple_build_call): Likewise.
	(gimple_build_call_valist): Likewise.
	(gimple_build_call_internal_1): Likewise.
	(gimple_build_call_internal): Likewise.
	(gimple_build_call_internal_vec): Likewise.
	(gimple_build_call_from_tree): Likewise.
	(gimple_build_assign_stat): Strengthen return type from gimple to
	gassign *.
	(gimple_build_assign_with_ops): Likewise.
	(gimple_build_assign_with_ops): Likewise.
	(gimple_build_cond): Strengthen return type from gimple to
	gcond *.
	(gimple_build_cond_from_tree): Likewise.
	(gimple_cond_set_condition_from_tree): Require a gcond *.
	(gimple_build_label): Strengthen return type from gimple to
	glabel *.
	(gimple_build_goto): Strengthen return type from gimple to
	ggoto *.
	(gimple_build_bind): Strengthen return type from gimple to
	gbind *.
	(gimple_build_asm_1): Strengthen return type from gimple to
	gasm *.
	(gimple_build_asm_vec): Likewise.
	(gimple_build_catch): Strengthen return type from gimple to
	gcatch *.
	(gimple_build_eh_filter): Strengthen return type from gimple to
	geh_filter *.
	(gimple_build_eh_must_not_throw): Strengthen return type from
	gimple to geh_mnt *.
	(gimple_build_eh_else): Strengthen return type from gimple to
	geh_else *.
	(gimple_build_try): Update for renaming of gimple_statement_try to
	gtry.
	(gimple_build_resx): Strengthen return type from gimple to
	gresx *.
	(gimple_build_switch_nlabels): Strengthen return type from gimple
	to gswitch *.
	(gimple_build_switch): Likewise.
	(gimple_build_eh_dispatch): Strengthen return type from gimple to
	geh_dispatch *.
	(gimple_build_debug_bind_stat): Strengthen return type from gimple
	to gdebug *.
	(gimple_build_debug_source_bind_stat): Strengthen return type from
	gimple to gdebug *.
	(gimple_build_omp_critical): Strengthen return type from gimple to
	gomp_critical *.
	(gimple_build_omp_for): Strengthen return type from gimple to
	gomp_for *.
	(gimple_build_omp_parallel): Strengthen return type from gimple to
	gomp_parallel *.
	(gimple_build_omp_task): Strengthen return type from gimple to
	gomp_task *.
	(gimple_build_omp_continue): Strengthen return type from gimple to
	gomp_continue *.
	(gimple_build_omp_sections): Strengthen return type from gimple to
	gomp_sections *.
	(gimple_build_omp_single): Strengthen return type from gimple to
	gomp_single *.
	(gimple_build_omp_target): Strengthen return type from gimple to
	gomp_target *.
	(gimple_build_omp_teams): Strengthen return type from gimple to
	gomp_teams *.
	(gimple_build_omp_atomic_load): Strengthen return type from gimple
	to gomp_atomic_load *.
	(gimple_build_omp_atomic_store): Strengthen return type from gimple
	to gomp_atomic_store *.
	(gimple_build_transaction): Strengthen return type from gimple
	to gtransaction *.
	(empty_stmt_p): Replace check for GIMPLE_BIND with a dyn_cast.
	(gimple_call_fnspec): Require a const gcall *.
	(gimple_call_arg_flags): Likewise.
	(gimple_call_return_flags): Likewise.
	(gimple_set_bb): Add a checked cast.
	(gimple_copy): Within the cases, add locals of the appropriate
	subclass and use in place of "stmt" and "copy" for typesafety.
	(gimple_has_side_effects): Add a checked cast.
	(gimple_could_trap_p_1): Likewise.
	(gimple_call_copy_skip_args): Require a gcall *, and return one.
	(gimple_asm_clobbers_memory_p): Require a const gasm *.
	(infer_nonnull_range): Replace a check for GIMPLE_RETURN with a
	dyn_cast, introducing local "return_stmt" and using ti in place
	of "stmt".

	* gimple.h (gimple_vec): Eliminate this typedef.
	(struct gimple_statement_call): Rename to...
	(struct gcall): ...this.
	(struct gimple_statement_bind): Rename to...
	(struct gbind): ...this.
	(struct gimple_statement_catch): Rename to...
	(struct gcatch): ...this.
	(struct gimple_statement_eh_filter): Rename to...
	(struct geh_filter): ...this.
	(struct gimple_statement_eh_else): Rename to...
	(struct geh_else): ...this.
	(struct gimple_statement_eh_mnt): Rename to...
	(struct geh_mnt): ...this.
	(struct gimple_statement_phi): Rename to...
	(struct gphi): ...this.
	(struct gimple_statement_resx): Rename to...
	(struct gresx): ...this.
	(struct gimple_statement_eh_dispatch): Rename to...
	(struct geh_dispatch): ...this.
	(struct gimple_statement_try): Rename to...
	(struct gtry): ...this.
	(struct gimple_statement_asm): Rename to...
	(struct gasm): ...this.
	(struct gimple_statement_omp_critical): Rename to...
	(struct gomp_critical): ...this.
	(struct gimple_statement_omp_for): Rename to...
	(struct gomp_for): ...this.
	(struct gimple_statement_omp_parallel): Rename to...
	(struct gomp_parallel): ...this.
	(struct gimple_statement_omp_target): Rename to...
	(struct gomp_target): ...this.
	(struct gimple_statement_omp_task): Rename to...
	(struct gomp_task): ...this.
	(struct gimple_statement_omp_sections): Rename to...
	(struct gomp_sections): ...this.
	(struct gimple_statement_omp_continue): Rename to...
	(struct gomp_continue): ...this.
	(struct gimple_statement_omp_single): Rename to...
	(struct gomp_single): ...this.
	(struct gimple_statement_omp_teams): Rename to...
	(struct gomp_teams): ...this.
	(struct gimple_statement_omp_atomic_load): Rename to...
	(struct gomp_atomic_load): ...this.
	(struct gimple_statement_omp_atomic_store :): Rename to...
	(struct gomp_atomic_store :): ...this.
	(struct gimple_statement_transaction): Rename to...
	(struct gtransaction): ...this.
	(struct gcond): New subclass.
	(struct gdebug): New subclass.
	(struct ggoto): New subclass.
	(struct glabel): New subclass.
	(struct gswitch): New subclass.
	(struct gassign): New subclass.
	(struct greturn): New subclass.
	(is_a_helper <gimple_statement_asm *>::test): Rename to...
	(is_a_helper <gasm *>::test): ...this.
	(is_a_helper <gimple_statement_bind *>::test): Rename to...
	(is_a_helper <gbind *>::test): ...this.
	(is_a_helper <gassign *>::test): New.
	(is_a_helper <gimple_statement_call *>::test): Rename to...
	(is_a_helper <gcall *>::test): ...this.
	(is_a_helper <gimple_statement_catch *>::test): Rename to...
	(is_a_helper <gcatch *>::test): ...this.
	(is_a_helper <gimple_statement_resx *>::test): Rename to...
	(is_a_helper <gresx *>::test): ...this.
	(is_a_helper <gcond *>::test): New.
	(is_a_helper <gdebug *>::test): New.
	(is_a_helper <ggoto *>::test): New.
	(is_a_helper <glabel *>::test): New.
	(is_a_helper <gimple_statement_eh_dispatch *>::test): Rename to...
	(is_a_helper <geh_dispatch *>::test): ...this.
	(is_a_helper <gimple_statement_eh_else *>::test): Rename to...
	(is_a_helper <geh_else *>::test): ...this.
	(is_a_helper <gimple_statement_eh_filter *>::test): Rename to...
	(is_a_helper <geh_filter *>::test): ...this.
	(is_a_helper <gimple_statement_eh_mnt *>::test): Rename to...
	(is_a_helper <geh_mnt *>::test): ...this.
	(is_a_helper <gimple_statement_omp_atomic_load *>::test): Rename to...
	(is_a_helper <gomp_atomic_load *>::test): ...this.
	(is_a_helper <gimple_statement_omp_atomic_store *>::test): Rename to...
	(is_a_helper <gomp_atomic_store *>::test): ...this.
	(is_a_helper <gimple_statement_omp_continue *>::test): Rename to...
	(is_a_helper <gomp_continue *>::test): ...this.
	(is_a_helper <gimple_statement_omp_critical *>::test): Rename to...
	(is_a_helper <gomp_critical *>::test): ...this.
	(is_a_helper <gimple_statement_omp_for *>::test): Rename to...
	(is_a_helper <gomp_for *>::test): ...this.
	(is_a_helper <gimple_statement_omp_parallel *>::test): Rename to...
	(is_a_helper <gomp_parallel *>::test): ...this.
	(is_a_helper <gimple_statement_omp_target *>::test): Rename to...
	(is_a_helper <gomp_target *>::test): ...this.
	(is_a_helper <gimple_statement_omp_sections *>::test): Rename to...
	(is_a_helper <gomp_sections *>::test): ...this.
	(is_a_helper <gimple_statement_omp_single *>::test): Rename to...
	(is_a_helper <gomp_single *>::test): ...this.
	(is_a_helper <gimple_statement_omp_teams *>::test): Rename to...
	(is_a_helper <gomp_teams *>::test): ...this.
	(is_a_helper <gimple_statement_omp_task *>::test): Rename to...
	(is_a_helper <gomp_task *>::test): ...this.
	(is_a_helper <gimple_statement_phi *>::test): Rename to...
	(is_a_helper <gphi *>::test): ...this.
	(is_a_helper <gimple_statement_transaction *>::test): Rename to...
	(is_a_helper <gtransaction *>::test): ...this.
	(is_a_helper <greturn *>::test): New.
	(is_a_helper <gswitch *>::test): New.
	(is_a_helper <gimple_statement_try *>::test): Rename to...
	(is_a_helper <gtry *>::test): ...this.
	(is_a_helper <const gimple_statement_asm *>::test): Rename to...
	(is_a_helper <const gasm *>::test): ...this.
	(is_a_helper <const gimple_statement_bind *>::test): Rename to...
	(is_a_helper <const gbind *>::test): ...this.
	(is_a_helper <const gimple_statement_call *>::test): Rename to...
	(is_a_helper <const gcall *>::test): ...this.
	(is_a_helper <const gimple_statement_catch *>::test): Rename to...
	(is_a_helper <const gcatch *>::test): ...this.
	(is_a_helper <const gimple_statement_resx *>::test): Rename to...
	(is_a_helper <const gresx *>::test): ...this.
	(is_a_helper <const gimple_statement_eh_dispatch *>::test): Rename to...
	(is_a_helper <const geh_dispatch *>::test): ...this.
	(is_a_helper <const gimple_statement_eh_filter *>::test): Rename to...
	(is_a_helper <const geh_filter *>::test): ...this.
	(is_a_helper <const gimple_statement_omp_atomic_load *>::test):
	Rename to...
	(is_a_helper <const gomp_atomic_load *>::test): ...this.
	(is_a_helper <const gimple_statement_omp_atomic_store *>::test):
	Rename to...
	(is_a_helper <const gomp_atomic_store *>::test): ...this.
	(is_a_helper <const gimple_statement_omp_continue *>::test):
	Rename to...
	(is_a_helper <const gomp_continue *>::test): ...this.
	(is_a_helper <const gimple_statement_omp_critical *>::test):
	Rename to...
	(is_a_helper <const gomp_critical *>::test): ...this.
	(is_a_helper <const gimple_statement_omp_for *>::test): Rename to...
	(is_a_helper <const gomp_for *>::test): ...this.
	(is_a_helper <const gimple_statement_omp_parallel *>::test):
	Rename to...
	(is_a_helper <const gomp_parallel *>::test): ...this.
	(is_a_helper <const gimple_statement_omp_target *>::test): Rename to...
	(is_a_helper <const gomp_target *>::test): ...this.
	(is_a_helper <const gimple_statement_omp_sections *>::test):
	Rename to...
	(is_a_helper <const gomp_sections *>::test): ...this.
	(is_a_helper <const gimple_statement_omp_single *>::test): Rename to...
	(is_a_helper <const gomp_single *>::test): ...this.
	(is_a_helper <const gimple_statement_omp_teams *>::test): Rename to...
	(is_a_helper <const gomp_teams *>::test): ...this.
	(is_a_helper <const gimple_statement_omp_task *>::test): Rename to...
	(is_a_helper <const gomp_task *>::test): ...this.
	(is_a_helper <const gimple_statement_phi *>::test): Rename to...
	(is_a_helper <const gphi *>::test): ...this.
	(is_a_helper <const gimple_statement_transaction *>::test): Rename to...
	(is_a_helper <const gtransaction *>::test): ...this.
	(gimple_build_return): Strengthen return type to greturn *.
	(gimple_call_reset_alias_info): Require a gcall *.
	(gimple_build_call_vec): Return a gcall *.
	(gimple_build_call): Likewise.
	(gimple_build_call_valist): Likewise.
	(gimple_build_call_internal): Likewise.
	(gimple_build_call_internal_vec): Likewise.
	(gimple_build_call_from_tree): Likewise.
	(gimple_build_assign_stat): Return a gassign *.
	(gimple_build_assign_with_ops): Likewise.
	(gimple_build_cond): Return a gcond *.
	(gimple_build_cond_from_tree): Likewise.
	(gimple_cond_set_condition_from_tree): Require a gcond *.
	(gimple_build_label): Return a glabel *.
	(gimple_build_goto): Return a ggoto *.
	(gimple_build_bind): Return a gbind *.
	(gimple_build_asm_vec): Return a gasm *.
	(gimple_build_catch): Return a gcatch *.
	(gimple_build_eh_filter): Return a geh_filter *.
	(gimple_build_eh_must_not_throw): Return a geh_mnt *.
	(gimple_build_eh_else): Return a geh_else *.
	(gimple_build_try): Return a gtry *.
	(gimple_build_resx): Return a gresx *.
	(gimple_build_switch_nlabels): Return a gswitch *.
	(gimple_build_switch): Return a gswitch *.
	(gimple_build_eh_dispatch): Return a geh_dispatch *.
	(gimple_build_debug_bind_stat): Return a gdebug *.
	(gimple_build_debug_source_bind_stat): Return a gdebug *.
	(gimple_build_omp_critical): Return a gomp_critical *.
	(gimple_build_omp_for): Return a gomp_for *.
	(gimple_build_omp_parallel): Return a gomp_parallel *.
	(gimple_build_omp_task): Return a gomp_task *.
	(gimple_build_omp_continue): Return a gomp_continue *.
	(gimple_build_omp_sections): Return a gomp_sections *.
	(gimple_build_omp_single): Return a gomp_single *.
	(gimple_build_omp_target): Return a gomp_target *.
	(gimple_build_omp_teams): Return a gomp_teams *.
	(gimple_build_omp_atomic_load): Return a gomp_atomic_load *.
	(gimple_build_omp_atomic_store): Return a gomp_atomic_store *.
	(gimple_build_transaction): Return a gtransaction *.
	(gimple_call_arg_flags): Require a const gcall *.
	(gimple_call_return_flags): Likewise.
	(gimple_call_copy_skip_args): Require and return a gcall *.
	(gimple_asm_clobbers_memory_p): Require a const gasm *.
	(gimple_seq_first_stmt_as_a_bind): New.
	(gimple_assign_nontemporal_move_p): Require a const gassign *
	rather than a const_gimple.
	(gimple_call_internal_fn): Update for renaming to gcall.
	(gimple_call_fntype): Likewise.
	(gimple_call_set_fntype): Require a gcall * rather than a gimple.
	(gimple_call_set_fn): Likewise.
	(gimple_call_set_internal_fn): Likewise.
	(gimple_call_set_chain): Likewise.
	(gimple_call_set_tail): Likewise.
	(gimple_call_tail_p): Likewise.
	(gimple_call_set_return_slot_opt): Likewise.
	(gimple_call_return_slot_opt_p): Likewise.
	(gimple_call_set_from_thunk): Likewise.
	(gimple_call_from_thunk_p): Likewise.
	(gimple_call_set_va_arg_pack): Likewise.
	(gimple_call_va_arg_pack_p): Likewise.
	(gimple_call_set_nothrow): Likewise.
	(gimple_call_nothrow_p): Likewise.
	(gimple_call_set_alloca_for_var): Likewise.
	(gimple_call_alloca_for_var_p): Likewise.
	(gimple_call_use_set): Likewise.
	(gimple_call_clobber_set): Likewise.
	(gimple_call_return_type): Require a const gcall * rather than a
	const_gimple.
	(gimple_call_chain_ptr): Likewise.
	(gimple_call_copy_flags): Require a pair of gcall *.
	(gimple_cond_set_code): Require a gcond * rather than a gimple
	(gimple_cond_set_lhs): Likewise.
	(gimple_cond_set_rhs): Likewise.
	(gimple_cond_set_true_label): Likewise.
	(gimple_cond_set_false_label): Likewise.
	(gimple_cond_make_false): Likewise.
	(gimple_cond_make_true): Likewise.
	(gimple_cond_lhs_ptr): Require a const gcond * rather than a
	const_gimple.
	(gimple_cond_rhs_ptr): Likewise.
	(gimple_cond_true_label): Likewise.
	(gimple_cond_false_label): Likewise.
	(gimple_cond_true_p): Likewise.
	(gimple_cond_false_p): Likewise.
	(gimple_cond_set_condition): Likewise.
	(gimple_label_label): Require a const glabel *.
	(gimple_label_set_label): Require a glabel *.
	(gimple_goto_set_dest): Require a ggoto *.
	(gimple_bind_vars): Require a const gbind *.
	(gimple_bind_block): Likewise.
	(gimple_bind_set_vars): Require a gbind *.
	(gimple_bind_append_vars): Likewise.
	(gimple_bind_body_ptr): Likewise.
	(gimple_bind_body): Likewise.
	(gimple_bind_set_body): Likewise.
	(gimple_bind_add_stmt): Likewise.
	(gimple_bind_add_seq): Likewise.
	(gimple_bind_set_block): Likewise.
	(gimple_asm_ninputs): Require a const gasm *.
	(gimple_asm_noutputs): Likewise.
	(gimple_asm_nclobbers): Likewise.
	(gimple_asm_nlabels): Likewise.
	(gimple_asm_input_op): Likewise.
	(gimple_asm_input_op_ptr): Likewise.
	(gimple_asm_output_op): Likewise.
	(gimple_asm_output_op_ptr): Likewise.
	(gimple_asm_clobber_op): Likewise.
	(gimple_asm_label_op): Likewise.
	(gimple_asm_string): Likewise.
	(gimple_asm_volatile_p): Likewise.
	(gimple_asm_input_p): Likewise.
	(gimple_asm_set_input_op): Require a gasm *.
	(gimple_asm_set_output_op): Likewise.
	(gimple_asm_set_clobber_op): Likewise.
	(gimple_asm_set_label_op): Likewise.
	(gimple_asm_set_volatile): Likewise.
	(gimple_asm_set_input): Likewise.
	(gimple_catch_types): Require a const gcatch *.
	(gimple_catch_types_ptr): Require a gcatch *.
	(gimple_catch_handler_ptr): Likewise.
	(gimple_catch_handler): Likewise.
	(gimple_catch_set_types): Likewise.
	(gimple_catch_set_handler): Likewise.
	(gimple_eh_filter_types): Update for renaming of subclass to
	geh_filter.
	(gimple_eh_filter_types_ptr): Likewise.
	(gimple_eh_filter_failure_ptr): Likewise.
	(gimple_eh_filter_set_types): Require a geh_filter *.
	(gimple_eh_filter_set_failure): Likewise.
	(gimple_eh_must_not_throw_fndecl): Require a geh_mnt *.
	(gimple_eh_must_not_throw_set_fndecl): Likewise.
	(gimple_eh_else_n_body_ptr): Require a geh_else *.
	(gimple_eh_else_n_body): Likewise.
	(gimple_eh_else_e_body_ptr): Likewise.
	(gimple_eh_else_e_body): Likewise.
	(gimple_eh_else_set_n_body): Likewise.
	(gimple_eh_else_set_e_body): Likewise.
	(gimple_try_set_kind): Require a gtry *.
	(gimple_try_set_catch_is_cleanup): Likewise.
	(gimple_try_set_eval): Likewise.
	(gimple_try_set_cleanup): Likewise.
	(gimple_try_eval_ptr): Update for renaming of subclass to gtry.
	(gimple_try_cleanup_ptr): Likewise.
	(gimple_phi_capacity): Update for renaming of subclass to gphi.
	(gimple_phi_num_args): Likewise.
	(gimple_phi_result): Likewise.
	(gimple_phi_result_ptr): Likewise.
	(gimple_phi_arg): Likewise.
	(gimple_phi_set_result): Require a gphi *.
	(gimple_phi_set_arg): Likewise.
	(gimple_phi_arg_def_ptr): Likewise.
	(gimple_phi_arg_edge): Likewise.
	(gimple_phi_arg_location): Likewise.
	(gimple_phi_arg_location_from_edge): Likewise.
	(gimple_phi_arg_set_location): Likewise.
	(gimple_phi_arg_has_location): Likewise.
	(gimple_resx_region): Require a const gresx *.
	(gimple_resx_set_region): Require a gresx *.
	(gimple_eh_dispatch_region): Require a const geh_dispatch *.
	(gimple_eh_dispatch_set_region): Require a geh_dispatch *.
	(gimple_switch_num_labels): Require a const gswitch *.
	(gimple_switch_set_num_labels): Likewise.
	(gimple_switch_index): Likewise.
	(gimple_switch_index_ptr): Likewise.
	(gimple_switch_label): Likewise.
	(gimple_switch_default_label): Likewise.
	(gimple_switch_set_index): Require a gswitch *.
	(gimple_switch_set_label): Likewise.
	(gimple_switch_set_default_label): Likewise.
	(gimple_omp_critical_name): Require a const gomp_critical *.
	(gimple_omp_critical_name_ptr): Require a gomp_critical *.
	(gimple_omp_critical_set_name): Likewise.
	(gimple_omp_for_set_kind): Require a gomp_for *.
	(gimple_omp_for_set_combined_p): Likewise.
	(gimple_omp_for_set_combined_into_p): Likewise.
	(gimple_omp_for_clauses): Update for renaming of subclass to
	gomp_for.
	(gimple_omp_for_clauses_ptr): Likewise.
	(gimple_omp_for_set_clauses): Likewise.
	(gimple_omp_for_collapse): Likewise.
	(gimple_omp_for_index): Likewise.
	(gimple_omp_for_index_ptr): Likewise.
	(gimple_omp_for_set_index): Likewise.
	(gimple_omp_for_initial): Likewise.
	(gimple_omp_for_initial_ptr): Likewise.
	(gimple_omp_for_set_initial): Likewise.
	(gimple_omp_for_final): Likewise.
	(gimple_omp_for_final_ptr): Likewise.
	(gimple_omp_for_set_final): Likewise.
	(gimple_omp_for_incr): Likewise.
	(gimple_omp_for_incr_ptr): Likewise.
	(gimple_omp_for_set_incr): Likewise.
	(gimple_omp_for_pre_body): Likewise.
	(gimple_omp_for_set_pre_body): Likewise.
	(gimple_omp_parallel_clauses): Update for renaming of subclass to
	gomp_parallel.
	(gimple_omp_parallel_clauses_ptr): Require a gomp_parallel *.
	(gimple_omp_parallel_set_clauses): Likewise.
	(gimple_omp_parallel_child_fn_ptr): Likewise.
	(gimple_omp_parallel_set_child_fn): Likewise.
	(gimple_omp_parallel_data_arg_ptr): Likewise.
	(gimple_omp_parallel_set_data_arg): Likewise.
	(gimple_omp_parallel_child_fn): Require a const gomp_parallel *.
	(gimple_omp_parallel_data_arg): Likewise.
	(gimple_omp_task_clauses): Update for renaming of subclass to
	gomp_task.
	(gimple_omp_task_clauses_ptr): Likewise.
	(gimple_omp_task_set_clauses): Likewise.
	(gimple_omp_task_child_fn): Likewise.
	(gimple_omp_task_child_fn_ptr): Likewise.
	(gimple_omp_task_set_child_fn): Likewise.
	(gimple_omp_task_data_arg): Likewise.
	(gimple_omp_task_data_arg_ptr): Likewise.
	(gimple_omp_task_set_data_arg): Likewise.
	(gimple_omp_taskreg_clauses): Whitespace fixes.
	(gimple_omp_taskreg_clauses_ptr): Likewise.
	(gimple_omp_taskreg_set_clauses): Likewise.
	(gimple_omp_taskreg_child_fn): Likewise.
	(gimple_omp_taskreg_child_fn_ptr): Likewise.
	(gimple_omp_taskreg_set_child_fn): Likewise.
	(gimple_omp_taskreg_data_arg): Likewise.
	(gimple_omp_taskreg_data_arg_ptr): Likewise.
	(gimple_omp_taskreg_set_data_arg): Likewise.
	(gimple_omp_task_copy_fn): Update for renaming of subclass to
	gomp_task.
	(gimple_omp_task_copy_fn_ptr): Likewise.
	(gimple_omp_task_set_copy_fn): Likewise.
	(gimple_omp_task_arg_size): Likewise.
	(gimple_omp_task_arg_size_ptr): Likewise.
	(gimple_omp_task_set_arg_size): Likewise.
	(gimple_omp_task_arg_align): Likewise.
	(gimple_omp_task_arg_align_ptr): Likewise.
	(gimple_omp_task_set_arg_align): Likewise.
	(gimple_omp_single_clauses): Update for renaming of subclass to
	gomp_single.
	(gimple_omp_single_clauses_ptr): Likewise.
	(gimple_omp_single_set_clauses): Likewise.
	(gimple_omp_target_clauses): Update for renaming of subclass to
	gomp_target.
	(gimple_omp_target_clauses_ptr): Likewise.
	(gimple_omp_target_set_clauses): Require a gomp_target *.
	(gimple_omp_target_set_kind): Likewise.
	(gimple_omp_target_child_fn_ptr): Likewise.
	(gimple_omp_target_set_child_fn): Likewise.
	(gimple_omp_target_data_arg_ptr): Likewise.
	(gimple_omp_target_set_data_arg): Likewise.
	(gimple_omp_target_child_fn): Require a const gomp_target *.
	(gimple_omp_target_data_arg): Likewise.
	(gimple_omp_teams_clauses): Update for renaming of subclass to
	gomp_teams.
	(gimple_omp_teams_clauses_ptr): Likewise.
	(gimple_omp_teams_set_clauses): Require a gomp_teams *.
	(gimple_omp_sections_clauses): Update for renaming of subclass to
	gomp_sections.
	(gimple_omp_sections_clauses_ptr): Likewise.
	(gimple_omp_sections_set_clauses): Likewise.
	(gimple_omp_sections_control): Likewise.
	(gimple_omp_sections_control_ptr): Likewise.
	(gimple_omp_sections_set_control): Likewise.
	(gimple_omp_for_set_cond): Likewise.
	(gimple_omp_for_cond): Likewise.
	(gimple_omp_atomic_store_set_val): Require a gomp_atomic_store *.
	(gimple_omp_atomic_store_val_ptr): Likewise.
	(gimple_omp_atomic_load_set_lhs): Likewise.
	(gimple_omp_atomic_store_val): Require a const gomp_atomic_store *.
	(gimple_omp_atomic_load_lhs): Likewise.
	(gimple_omp_atomic_load_rhs): Likewise.
	(gimple_omp_atomic_load_lhs_ptr): Require a gomp_atomic_load *.
	(gimple_omp_atomic_load_set_rhs): Likewise.
	(gimple_omp_atomic_load_rhs_ptr): Likewise.
	(gimple_omp_continue_control_def): Require a const gomp_continue *.
	(gimple_omp_continue_control_use): Likewise.
	(gimple_omp_continue_control_def_ptr): Require a gomp_continue *.
	(gimple_omp_continue_set_control_def): Likewise.
	(gimple_omp_continue_control_use_ptr): Likewise.
	(gimple_omp_continue_set_control_use): Likewise.
	(gimple_transaction_body_ptr): Require a gtransaction *.
	(gimple_transaction_body): Likewise.
	(gimple_transaction_label_ptr): Likewise.
	(gimple_transaction_label): Require a const gtransaction *.
	(gimple_transaction_subcode): Likewise.
	(gimple_transaction_set_body): Require a gtransaction *.
	(gimple_transaction_set_label): Likewise.
	(gimple_transaction_set_subcode): Likewise.
	(gimple_return_retval_ptr): Require a const greturn *.
	(gimple_return_retval): Likewise.
	(gimple_return_set_retval): Require a greturn *.
	(gimple_expr_type): Introduce local "call_stmt" and use in place of
	"stmt" for typesafety.

	* asan.c: Use gimple subclasses.
	* auto-profile.c: Likewise.
	* builtins.c: Likewise.
	* builtins.h: Likewise.
	* cfgexpand.c: Likewise.
	* cfgloop.c: Likewise.
	* cfgloopmanip.c: Likewise.
	* cgraph.c: Likewise.
	* cgraph.h: Likewise.
	* cgraphbuild.c: Likewise.
	* cgraphclones.c: Likewise.
	* cgraphunit.c: Likewise.
	* expr.h: Likewise.
	* gimple-builder.c: Likewise.
	* gimple-builder.h: Likewise.
	* gimple-fold.c: Likewise.
	* gimple-low.c: Likewise.
	* gimple-pretty-print.c: Likewise.
	* gimple-ssa-isolate-paths.c: Likewise.
	* gimple-ssa-strength-reduction.c: Likewise.
	* gimple-streamer-in.c: Likewise.
	* gimple-streamer-out.c: Likewise.
	* gimple-walk.c: Likewise.
	* gimplify-me.c: Likewise.
	* gimplify.c: Likewise.
	* gimplify.h: Likewise.
	* graphite-scop-detection.c: Likewise.
	* graphite-sese-to-poly.c: Likewise.
	* internal-fn.c: Likewise.
	* internal-fn.def:: Likewise.
	* internal-fn.h: Likewise.
	* ipa-icf-gimple.c: Likewise.
	* ipa-icf-gimple.h: Likewise.
	* ipa-icf.c: Likewise.
	* ipa-inline-analysis.c: Likewise.
	* ipa-prop.c: Likewise.
	* ipa-prop.h: Likewise.
	* ipa-pure-const.c: Likewise.
	* ipa-split.c: Likewise.
	* lto-streamer-in.c: Likewise.
	* lto-streamer-out.c: Likewise.
	* omp-low.c: Likewise.
	* predict.c: Likewise.
	* sanopt.c: Likewise.
	* sese.c: Likewise.
	* ssa-iterators.h: Likewise.
	* stmt.c: Likewise.
	* trans-mem.c: Likewise.
	* tree-call-cdce.c: Likewise.
	* tree-cfg.c: Likewise.
	* tree-cfg.h: Likewise.
	* tree-cfgcleanup.c: Likewise.
	* tree-chkp.c: Likewise.
	* tree-chkp.h: Likewise.
	* tree-complex.c: Likewise.
	* tree-data-ref.c: Likewise.
	* tree-dfa.c: Likewise.
	* tree-eh.c: Likewise.
	* tree-eh.h: Likewise.
	* tree-emutls.c: Likewise.
	* tree-if-conv.c: Likewise.
	* tree-inline.c: Likewise.
	* tree-inline.h: Likewise.
	* tree-into-ssa.c: Likewise.
	* tree-into-ssa.h: Likewise.
	* tree-loop-distribution.c: Likewise.
	* tree-nrv.c: Likewise.
	* tree-object-size.c: Likewise.
	* tree-outof-ssa.c: Likewise.
	* tree-parloops.c: Likewise.
	* tree-phinodes.c: Likewise.
	* tree-phinodes.h: Likewise.
	* tree-predcom.c: Likewise.
	* tree-profile.c: Likewise.
	* tree-scalar-evolution.c: Likewise.
	* tree-scalar-evolution.h
	* tree-sra.cn_function):
	* tree-ssa-alias.c: Likewise.
	* tree-ssa-alias.h: Likewise.
	* tree-ssa-ccp.c: Likewise.
	* tree-ssa-coalesce.c: Likewise.
	* tree-ssa-copy.c: Likewise.
	* tree-ssa-copyrename.c: Likewise.
	* tree-ssa-dce.c: Likewise.
	* tree-ssa-dom.c: Likewise.
	* tree-ssa-forwprop.c: Likewise.
	* tree-ssa-ifcombine.c: Likewise.
	* tree-ssa-live.c: Likewise.
	* tree-ssa-loop-im.c: Likewise.
	* tree-ssa-loop-ivcanon.c: Likewise.
	* tree-ssa-loop-ivopts.c: Likewise.
	* tree-ssa-loop-manip.c: Likewise.
	* tree-ssa-loop-niter.c: Likewise.
	* tree-ssa-loop-prefetch.c: Likewise.
	* tree-ssa-loop-unswitch.c: Likewise.
	* tree-ssa-math-opts.c: Likewise.
	* tree-ssa-operands.c: Likewise.
	* tree-ssa-phiopt.c: Likewise.
	* tree-ssa-phiprop.c: Likewise.
	* tree-ssa-pre.c: Likewise.
	* tree-ssa-propagate.c: Likewise.
	* tree-ssa-propagate.h: Likewise.
	* tree-ssa-reassoc.c: Likewise.
	* tree-ssa-sccvn.c: Likewise.
	* tree-ssa-sccvn.h: Likewise.
	* tree-ssa-sink.c: Likewise.
	* tree-ssa-strlen.c
	* tree-ssa-structalias.c
	* tree-ssa-tail-merge.c: Likewise.
	* tree-ssa-ter.c: Likewise.
	* tree-ssa-threadedge.c: Likewise.
	* tree-ssa-threadedge.h: Likewise.
	* tree-ssa-threadupdate.c: Likewise.
	* tree-ssa-uncprop.c: Likewise.
	* tree-ssa-uninit.c: Likewise.
	* tree-ssa.c: Likewise.
	* tree-stdarg.c: Likewise.
	* tree-switch-conversion.c: Likewise.
	* tree-tailcall.c: Likewise.
	* tree-vect-data-refs.c: Likewise.
	* tree-vect-generic.c: Likewise.
	* tree-vect-loop-manip.c: Likewise.
	* tree-vect-loop.c: Likewise.
	* tree-vect-patterns.c: Likewise.
	* tree-vect-slp.c: Likewise.
	* tree-vect-stmts.c: Likewise.
	* tree-vectorizer.h: Likewise.
	* tree-vrp.c: Likewise.
	* tree.c: Likewise.
	* ubsan.c: Likewise.
	* value-prof.c: Likewise.
	* value-prof.h: Likewise.
	* vtable-verify.c: Likewise.

gcc/c-family/ChangeLog:
	Merger of git branch "gimple-classes-v2-option-3".
	* ChangeLog.gimple-classes: New.
	* c-gimplify.c (add_block_to_enclosing): Strengthen local "stack"
	from being just a vec<gimple> to a vec<gbind *>.

gcc/java/ChangeLog:
	Merger of git branch "gimple-classes-v2-option-3".
	* ChangeLog.gimple-classes: New.
	* java-gimplify.c (java_gimplify_block): Strengthen local "outer"
	from gimple to gbind *.

From-SVN: r217787

1 files changed, 83 insertions, 49 deletions

diff --git a/gcc/trans-mem.c b/gcc/trans-mem.c
index 9899e7b..d3a6f10 100644
--- a/gcc/trans-mem.c
+++ b/gcc/trans-mem.c
@@ -767,9 +767,10 @@ diagnose_tm_1 (gimple_stmt_iterator *gsi, bool *handled_ops_p,
 
     case GIMPLE_TRANSACTION:
       {
+	gtransaction *trans_stmt = as_a <gtransaction *> (stmt);
 	unsigned char inner_flags = DIAG_TM_SAFE;
 
-	if (gimple_transaction_subcode (stmt) & GTMA_IS_RELAXED)
+	if (gimple_transaction_subcode (trans_stmt) & GTMA_IS_RELAXED)
 	  {
 	    if (d->block_flags & DIAG_TM_SAFE)
 	      error_at (gimple_location (stmt),
@@ -779,7 +780,7 @@ diagnose_tm_1 (gimple_stmt_iterator *gsi, bool *handled_ops_p,
 			"relaxed transaction in %<transaction_safe%> function");
 	    inner_flags = DIAG_TM_RELAXED;
 	  }
-	else if (gimple_transaction_subcode (stmt) & GTMA_IS_OUTER)
+	else if (gimple_transaction_subcode (trans_stmt) & GTMA_IS_OUTER)
 	  {
 	    if (d->block_flags)
 	      error_at (gimple_location (stmt),
@@ -795,7 +796,7 @@ diagnose_tm_1 (gimple_stmt_iterator *gsi, bool *handled_ops_p,
 	  }
 
 	*handled_ops_p = true;
-	if (gimple_transaction_body (stmt))
+	if (gimple_transaction_body (trans_stmt))
 	  {
 	    struct walk_stmt_info wi_inner;
 	    struct diagnose_tm d_inner;
@@ -808,7 +809,7 @@ diagnose_tm_1 (gimple_stmt_iterator *gsi, bool *handled_ops_p,
 	    memset (&wi_inner, 0, sizeof (wi_inner));
 	    wi_inner.info = &d_inner;
 
-	    walk_gimple_seq (gimple_transaction_body (stmt),
+	    walk_gimple_seq (gimple_transaction_body (trans_stmt),
 			     diagnose_tm_1, diagnose_tm_1_op, &wi_inner);
 	  }
       }
@@ -930,7 +931,7 @@ typedef struct tm_log_entry
   /* Entry block for the transaction this address occurs in.  */
   basic_block entry_block;
   /* Dominating statements the store occurs in.  */
-  gimple_vec stmts;
+  vec<gimple> stmts;
   /* Initially, while we are building the log, we place a nonzero
      value here to mean that this address *will* be saved with a
      save/restore sequence.  Later, when generating the save sequence
@@ -1610,7 +1611,8 @@ examine_call_tm (unsigned *state, gimple_stmt_iterator *gsi)
 static void
 lower_transaction (gimple_stmt_iterator *gsi, struct walk_stmt_info *wi)
 {
-  gimple g, stmt = gsi_stmt (*gsi);
+  gimple g;
+  gtransaction *stmt = as_a <gtransaction *> (gsi_stmt (*gsi));
   unsigned int *outer_state = (unsigned int *) wi->info;
   unsigned int this_state = 0;
   struct walk_stmt_info this_wi;
@@ -1806,6 +1808,22 @@ make_pass_lower_tm (gcc::context *ctxt)
 
 struct tm_region
 {
+public:
+
+  /* The field "transaction_stmt" is initially a gtransaction *,
+     but eventually gets lowered to a gcall *(to BUILT_IN_TM_START).
+
+     Helper method to get it as a gtransaction *, with code-checking
+     in a checked-build.  */
+
+  gtransaction *
+  get_transaction_stmt () const
+  {
+    return as_a <gtransaction *> (transaction_stmt);
+  }
+
+public:
+
   /* Link to the next unnested transaction.  */
   struct tm_region *next;
 
@@ -1817,7 +1835,8 @@ struct tm_region
 
   /* The GIMPLE_TRANSACTION statement beginning this transaction.
      After TM_MARK, this gets replaced by a call to
-     BUILT_IN_TM_START.  */
+     BUILT_IN_TM_START.
+     Hence this will be either a gtransaction *or a gcall *.  */
   gimple transaction_stmt;
 
   /* After TM_MARK expands the GIMPLE_TRANSACTION into a call to
@@ -1860,7 +1879,8 @@ static bitmap_obstack tm_obstack;
    GIMPLE_TRANSACTION statement in a tree of tm_region elements.  */
 
 static struct tm_region *
-tm_region_init_0 (struct tm_region *outer, basic_block bb, gimple stmt)
+tm_region_init_0 (struct tm_region *outer, basic_block bb,
+		  gtransaction *stmt)
 {
   struct tm_region *region;
 
@@ -1975,8 +1995,9 @@ tm_region_init (struct tm_region *region)
       /* Check for the last statement in the block beginning a new region.  */
       g = last_stmt (bb);
       old_region = region;
-      if (g && gimple_code (g) == GIMPLE_TRANSACTION)
-	region = tm_region_init_0 (region, bb, g);
+      if (g)
+	if (gtransaction *trans_stmt = dyn_cast <gtransaction *> (g))
+	  region = tm_region_init_0 (region, bb, trans_stmt);
 
       /* Process subsequent blocks.  */
       FOR_EACH_EDGE (e, ei, bb->succs)
@@ -2085,8 +2106,9 @@ transaction_subcode_ior (struct tm_region *region, unsigned flags)
 {
   if (region && region->transaction_stmt)
     {
-      flags |= gimple_transaction_subcode (region->transaction_stmt);
-      gimple_transaction_set_subcode (region->transaction_stmt, flags);
+      gtransaction *transaction_stmt = region->get_transaction_stmt ();
+      flags |= gimple_transaction_subcode (transaction_stmt);
+      gimple_transaction_set_subcode (transaction_stmt, flags);
     }
 }
 
@@ -2096,12 +2118,12 @@ transaction_subcode_ior (struct tm_region *region, unsigned flags)
 
    LOC is the location to use for the new statement(s).  */
 
-static gimple
+static gcall *
 build_tm_load (location_t loc, tree lhs, tree rhs, gimple_stmt_iterator *gsi)
 {
   enum built_in_function code = END_BUILTINS;
   tree t, type = TREE_TYPE (rhs), decl;
-  gimple gcall;
+  gcall *gcall;
 
   if (type == float_type_node)
     code = BUILT_IN_TM_LOAD_FLOAT;
@@ -2168,12 +2190,12 @@ build_tm_load (location_t loc, tree lhs, tree rhs, gimple_stmt_iterator *gsi)
 
 /* Similarly for storing TYPE in a transactional context.  */
 
-static gimple
+static gcall *
 build_tm_store (location_t loc, tree lhs, tree rhs, gimple_stmt_iterator *gsi)
 {
   enum built_in_function code = END_BUILTINS;
   tree t, fn, type = TREE_TYPE (rhs), simple_type;
-  gimple gcall;
+  gcall *gcall;
 
   if (type == float_type_node)
     code = BUILT_IN_TM_STORE_FLOAT;
@@ -2340,7 +2362,7 @@ static bool
 expand_call_tm (struct tm_region *region,
 		gimple_stmt_iterator *gsi)
 {
-  gimple stmt = gsi_stmt (*gsi);
+  gcall *stmt = as_a <gcall *> (gsi_stmt (*gsi));
   tree lhs = gimple_call_lhs (stmt);
   tree fn_decl;
   struct cgraph_node *node;
@@ -2427,6 +2449,7 @@ expand_call_tm (struct tm_region *region,
       tree tmp = create_tmp_reg (TREE_TYPE (lhs), NULL);
       location_t loc = gimple_location (stmt);
       edge fallthru_edge = NULL;
+      gassign *assign_stmt;
 
       /* Remember if the call was going to throw.  */
       if (stmt_can_throw_internal (stmt))
@@ -2445,15 +2468,15 @@ expand_call_tm (struct tm_region *region,
 
       gimple_call_set_lhs (stmt, tmp);
       update_stmt (stmt);
-      stmt = gimple_build_assign (lhs, tmp);
-      gimple_set_location (stmt, loc);
+      assign_stmt = gimple_build_assign (lhs, tmp);
+      gimple_set_location (assign_stmt, loc);
 
       /* We cannot throw in the middle of a BB.  If the call was going
 	 to throw, place the instrumentation on the fallthru edge, so
 	 the call remains the last statement in the block.  */
       if (fallthru_edge)
 	{
-	  gimple_seq fallthru_seq = gimple_seq_alloc_with_stmt (stmt);
+	  gimple_seq fallthru_seq = gimple_seq_alloc_with_stmt (assign_stmt);
 	  gimple_stmt_iterator fallthru_gsi = gsi_start (fallthru_seq);
 	  expand_assign_tm (region, &fallthru_gsi);
 	  gsi_insert_seq_on_edge (fallthru_edge, fallthru_seq);
@@ -2461,7 +2484,7 @@ expand_call_tm (struct tm_region *region,
 	}
       else
 	{
-	  gsi_insert_after (gsi, stmt, GSI_CONTINUE_LINKING);
+	  gsi_insert_after (gsi, assign_stmt, GSI_CONTINUE_LINKING);
 	  expand_assign_tm (region, gsi);
 	}
 
@@ -2710,7 +2733,7 @@ expand_transaction (struct tm_region *region, void *data ATTRIBUTE_UNUSED)
 
   /* ??? There are plenty of bits here we're not computing.  */
   {
-    int subcode = gimple_transaction_subcode (region->transaction_stmt);
+    int subcode = gimple_transaction_subcode (region->get_transaction_stmt ());
     int flags = 0;
     if (subcode & GTMA_DOES_GO_IRREVOCABLE)
       flags |= PR_DOESGOIRREVOCABLE;
@@ -2729,7 +2752,7 @@ expand_transaction (struct tm_region *region, void *data ATTRIBUTE_UNUSED)
     if (subcode & GTMA_IS_OUTER)
       region->original_transaction_was_outer = true;
     tree t = build_int_cst (tm_state_type, flags);
-    gimple call = gimple_build_call (tm_start, 1, t);
+    gcall *call = gimple_build_call (tm_start, 1, t);
     gimple_call_set_lhs (call, tm_state);
     gimple_set_location (call, gimple_location (region->transaction_stmt));
 
@@ -2915,8 +2938,8 @@ generate_tm_state (struct tm_region *region, void *data ATTRIBUTE_UNUSED)
   // again as we process blocks.
   if (region->exit_blocks)
     {
-      unsigned int subcode
-	= gimple_transaction_subcode (region->transaction_stmt);
+      gtransaction *transaction_stmt = region->get_transaction_stmt ();
+      unsigned int subcode = gimple_transaction_subcode (transaction_stmt);
 
       if (subcode & GTMA_DOES_GO_IRREVOCABLE)
 	subcode &= (GTMA_DECLARATION_MASK | GTMA_DOES_GO_IRREVOCABLE
@@ -2924,7 +2947,7 @@ generate_tm_state (struct tm_region *region, void *data ATTRIBUTE_UNUSED)
 		    | GTMA_HAS_NO_INSTRUMENTATION);
       else
 	subcode &= GTMA_DECLARATION_MASK;
-      gimple_transaction_set_subcode (region->transaction_stmt, subcode);
+      gimple_transaction_set_subcode (transaction_stmt, subcode);
     }
 
   return NULL;
@@ -2940,11 +2963,13 @@ propagate_tm_flags_out (struct tm_region *region)
 
   if (region->outer && region->outer->transaction_stmt)
     {
-      unsigned s = gimple_transaction_subcode (region->transaction_stmt);
+      unsigned s
+	= gimple_transaction_subcode (region->get_transaction_stmt ());
       s &= (GTMA_HAVE_ABORT | GTMA_HAVE_LOAD | GTMA_HAVE_STORE
             | GTMA_MAY_ENTER_IRREVOCABLE);
-      s |= gimple_transaction_subcode (region->outer->transaction_stmt);
-      gimple_transaction_set_subcode (region->outer->transaction_stmt, s);
+      s |= gimple_transaction_subcode (region->outer->get_transaction_stmt ());
+      gimple_transaction_set_subcode (region->outer->get_transaction_stmt (),
+				      s);
     }
 
   propagate_tm_flags_out (region->next);
@@ -2979,7 +3004,8 @@ execute_tm_mark (void)
 	{
 	  if (r->transaction_stmt)
 	    {
-	      unsigned sub = gimple_transaction_subcode (r->transaction_stmt);
+	      unsigned sub
+		= gimple_transaction_subcode (r->get_transaction_stmt ());
 
 	      /* If we're sure to go irrevocable, there won't be
 		 anything to expand, since the run-time will go
@@ -3097,23 +3123,26 @@ expand_block_edges (struct tm_region *const region, basic_block bb)
   for (gsi = gsi_start_bb (bb); !gsi_end_p (gsi); gsi = next_gsi)
     {
       gimple stmt = gsi_stmt (gsi);
+      gcall *call_stmt;
 
       next_gsi = gsi;
       gsi_next (&next_gsi);
 
       // ??? Shouldn't we split for any non-pure, non-irrevocable function?
-      if (gimple_code (stmt) != GIMPLE_CALL
-	  || (gimple_call_flags (stmt) & ECF_TM_BUILTIN) == 0)
+      call_stmt = dyn_cast <gcall *> (stmt);
+      if ((!call_stmt)
+	  || (gimple_call_flags (call_stmt) & ECF_TM_BUILTIN) == 0)
 	continue;
 
-      if (DECL_FUNCTION_CODE (gimple_call_fndecl (stmt)) == BUILT_IN_TM_ABORT)
+      if (DECL_FUNCTION_CODE (gimple_call_fndecl (call_stmt))
+	  == BUILT_IN_TM_ABORT)
 	{
 	  // If we have a ``_transaction_cancel [[outer]]'', there is only
 	  // one abnormal edge: to the transaction marked OUTER.
 	  // All compiler-generated instances of BUILT_IN_TM_ABORT have a
 	  // constant argument, which we can examine here.  Users invoking
 	  // TM_ABORT directly get what they deserve.
-	  tree arg = gimple_call_arg (stmt, 0);
+	  tree arg = gimple_call_arg (call_stmt, 0);
 	  if (TREE_CODE (arg) == INTEGER_CST
 	      && (TREE_INT_CST_LOW (arg) & AR_OUTERABORT) != 0
 	      && !decl_is_tm_clone (current_function_decl))
@@ -3122,7 +3151,7 @@ expand_block_edges (struct tm_region *const region, basic_block bb)
 	      for (struct tm_region *o = region; o; o = o->outer)
 		if (o->original_transaction_was_outer)
 		  {
-		    split_bb_make_tm_edge (stmt, o->restart_block,
+		    split_bb_make_tm_edge (call_stmt, o->restart_block,
 					   gsi, &next_gsi);
 		    break;
 		  }
@@ -3135,7 +3164,8 @@ expand_block_edges (struct tm_region *const region, basic_block bb)
 
 	  // Non-outer, TM aborts have an abnormal edge to the inner-most
 	  // transaction, the one being aborted;
-	  split_bb_make_tm_edge (stmt, region->restart_block, gsi, &next_gsi);
+	  split_bb_make_tm_edge (call_stmt, region->restart_block, gsi,
+				 &next_gsi);
 	}
 
       // All TM builtins have an abnormal edge to the outer-most transaction.
@@ -3153,14 +3183,14 @@ expand_block_edges (struct tm_region *const region, basic_block bb)
       for (struct tm_region *o = region; o; o = o->outer)
 	if (!o->outer)
 	  {
-            split_bb_make_tm_edge (stmt, o->restart_block, gsi, &next_gsi);
+            split_bb_make_tm_edge (call_stmt, o->restart_block, gsi, &next_gsi);
 	    break;
 	  }
 
       // Delete any tail-call annotation that may have been added.
       // The tail-call pass may have mis-identified the commit as being
       // a candidate because we had not yet added this restart edge.
-      gimple_call_set_tail (stmt, false);
+      gimple_call_set_tail (call_stmt, false);
     }
 }
 
@@ -3764,7 +3794,7 @@ dump_tm_memopt_transform (gimple stmt)
 
 static void
 tm_memopt_transform_stmt (unsigned int offset,
-			  gimple stmt,
+			  gcall *stmt,
 			  gimple_stmt_iterator *gsi)
 {
   tree fn = gimple_call_fn (stmt);
@@ -3800,28 +3830,30 @@ tm_memopt_transform_blocks (vec<basic_block> blocks)
 
 	  if (is_tm_simple_load (stmt))
 	    {
+	      gcall *call_stmt = as_a <gcall *> (stmt);
 	      loc = tm_memopt_value_number (stmt, NO_INSERT);
 	      if (store_avail && bitmap_bit_p (store_avail, loc))
-		tm_memopt_transform_stmt (TRANSFORM_RAW, stmt, &gsi);
+		tm_memopt_transform_stmt (TRANSFORM_RAW, call_stmt, &gsi);
 	      else if (store_antic && bitmap_bit_p (store_antic, loc))
 		{
-		  tm_memopt_transform_stmt (TRANSFORM_RFW, stmt, &gsi);
+		  tm_memopt_transform_stmt (TRANSFORM_RFW, call_stmt, &gsi);
 		  bitmap_set_bit (store_avail, loc);
 		}
 	      else if (read_avail && bitmap_bit_p (read_avail, loc))
-		tm_memopt_transform_stmt (TRANSFORM_RAR, stmt, &gsi);
+		tm_memopt_transform_stmt (TRANSFORM_RAR, call_stmt, &gsi);
 	      else
 		bitmap_set_bit (read_avail, loc);
 	    }
 	  else if (is_tm_simple_store (stmt))
 	    {
+	      gcall *call_stmt = as_a <gcall *> (stmt);
 	      loc = tm_memopt_value_number (stmt, NO_INSERT);
 	      if (store_avail && bitmap_bit_p (store_avail, loc))
-		tm_memopt_transform_stmt (TRANSFORM_WAW, stmt, &gsi);
+		tm_memopt_transform_stmt (TRANSFORM_WAW, call_stmt, &gsi);
 	      else
 		{
 		  if (read_avail && bitmap_bit_p (read_avail, loc))
-		    tm_memopt_transform_stmt (TRANSFORM_WAR, stmt, &gsi);
+		    tm_memopt_transform_stmt (TRANSFORM_WAR, call_stmt, &gsi);
 		  bitmap_set_bit (store_avail, loc);
 		}
 	    }
@@ -4676,7 +4708,8 @@ ipa_tm_diagnose_transaction (struct cgraph_node *node,
   struct tm_region *r;
 
   for (r = all_tm_regions; r ; r = r->next)
-    if (gimple_transaction_subcode (r->transaction_stmt) & GTMA_IS_RELAXED)
+    if (gimple_transaction_subcode (r->get_transaction_stmt ())
+	& GTMA_IS_RELAXED)
       {
 	/* Atomic transactions can be nested inside relaxed.  */
 	if (r->inner)
@@ -4950,7 +4983,7 @@ ipa_tm_insert_irr_call (struct cgraph_node *node, struct tm_region *region,
 			basic_block bb)
 {
   gimple_stmt_iterator gsi;
-  gimple g;
+  gcall *g;
 
   transaction_subcode_ior (region, GTMA_MAY_ENTER_IRREVOCABLE);
 
@@ -4973,10 +5006,11 @@ ipa_tm_insert_irr_call (struct cgraph_node *node, struct tm_region *region,
 static bool
 ipa_tm_insert_gettmclone_call (struct cgraph_node *node,
 			       struct tm_region *region,
-			       gimple_stmt_iterator *gsi, gimple stmt)
+			       gimple_stmt_iterator *gsi, gcall *stmt)
 {
   tree gettm_fn, ret, old_fn, callfn;
-  gimple g, g2;
+  gcall *g;
+  gassign *g2;
   bool safe;
 
   old_fn = gimple_call_fn (stmt);
@@ -5072,7 +5106,7 @@ ipa_tm_transform_calls_redirect (struct cgraph_node *node,
 				 gimple_stmt_iterator *gsi,
 				 bool *need_ssa_rename_p)
 {
-  gimple stmt = gsi_stmt (*gsi);
+  gcall *stmt = as_a <gcall *> (gsi_stmt (*gsi));
   struct cgraph_node *new_node;
   struct cgraph_edge *e = node->get_edge (stmt);
   tree fndecl = gimple_call_fndecl (stmt);