PR tree-optimization/20933
* tree-ssa-alias.c (compute_flow_insensitive_aliasing): Move
logic to reject aliases between read-only and writable
variables ...
(may_alias_p): ... here.
(get_tmt_for): Do not associate read-only tags to pointers
whose pointed-to type is not read-only.
* tree-ssa.c (verify_ssa): Check that memory stores have at
least one V_MAY_DEF or V_MUST_DEF.
testsuite/ChangeLog
PR tree-optimization/20933
* gcc.dg/tree-ssa/pr20933.c: New test.
From-SVN: r97988
Merge from tree-cleanup-branch: VRP, store CCP, store
copy-prop, incremental SSA updating of FUD chains and
newly exposed symbols.
* Makefile.in (tree-ssa-copy.o): Depend on tree-ssa-propagate.h.
(OBJS-common): Add tree-vrp.o.
(tree-vrp.o): New rule.
* basic-block.h (nearest_common_dominator_for_set): Declare.
* common.opt (ftree-store-ccp): New flag.
(ftree-copy-prop): New flag.
(ftree-vrp): New flag.
(ftree-store-copy-prop): New flag.
* dominance.c (nearest_common_dominator_for_set): New.
* domwalk.c (walk_dominator_tree): Only traverse
statements in blocks marked in walk_data->interesting_blocks.
* domwalk.h (struct dom_walk_data): Add field interesting_blocks.
* fold-const.c (fold): Handle ASSERT_EXPR.
* opts.c (decode_options): Set flag_tree_copy_prop at -O1.
Set flag_tree_store_ccp, flag_tree_store_copy_prop and
flag_tree_vrp at -O2.
* timevar.def (TV_TREE_VRP): Define.
(TV_TREE_COPY_PROP): Define.
(TV_TREE_STORE_COPY_PROP): Define.
(TV_TREE_SSA_INCREMENTAL): Define.
(TV_TREE_STORE_CCP): Define.
* tree-cfg.c (tree_can_merge_blocks_p): Remove reference
to kill_redundant_phi_nodes from comment.
(verify_expr): Handle ASSERT_EXPR.
* tree-dfa.c (mark_new_vars_to_rename): Remove second
argument. Update all users.
(mark_call_clobbered_vars_to_rename): Remove. Update all
users.
* tree-flow-inline.h (unmodifiable_var_p): New.
* tree-flow.h (enum value_range_type): Declare.
(struct value_range_def): Declare.
(value_range): Declare.
(remove_all_phi_nodes_for): Remove. Update all users.
(find_phi_node_for): Declare.
(add_type_alias): Declare.
(count_uses_and_derefs): Declare.
(kill_redundant_phi_nodes): Remove.
(rewrite_into_ssa): Remove.
(rewrite_def_def_chains): Remove.
(update_ssa, register_new_name_mapping, create_new_def_for,
need_ssa_update_p, name_registered_for_update_p,
release_ssa_name_after_update_ssa, dump_repl_tbl,
debug_repl_tbl, dump_names_replaced_by,
debug_names_replaced_by, mark_sym_for_renaming,
mark_set_for_renaming, get_current_def, set_current_def,
get_value_range, dump_value_range, debug_value_range,
dump_all_value_ranges, debug_all_value_ranges,
expr_computes_nonzero, loop_depth_of_name,
unmodifiable_var_p): Declare.
* tree-gimple.c (is_gimple_formal_tmp_rhs): Handle
ASSERT_EXPR.
* tree-into-ssa.c (block_defs_stack): Update comment.
(old_ssa_names, new_ssa_names, old_virtual_ssa_names,
syms_to_rename, names_to_release, repl_tbl,
need_to_initialize_update_ssa_p, need_to_update_vops_p,
need_to_replace_names_p): New locals.
(NAME_SETS_GROWTH_FACTOR): Define.
(struct repl_map_d): Declare.
(struct mark_def_sites_global_data): Add field
interesting_blocks.
(enum rewrite_mode): Declare.
(REGISTER_DEFS_IN_THIS_STMT): Define.
(compute_global_livein): Use last_basic_block instead of
n_basic_blocks.
(set_def_block): Remove last argument. Update all callers.
(prepare_use_operand_for_rename): Remove. Update all callers.
(prepare_def_operand_for_rename): Remove. Update all callers.
(symbol_marked_for_renaming): New.
(is_old_name): New.
(is_new_name): New.
(repl_map_hash): New.
(repl_map_eq): New.
(repl_map_free): New.
(names_replaced_by): New.
(add_to_repl_tbl): New.
(add_new_name_mapping): New.
(mark_def_sites): Assume that all the operands in the
statement are in normal form.
(find_idf): Assert that the block in the stack is valid.
(get_default_def_for): New.
(insert_phi_nodes_for): Add new argument 'update_p'.
Add documentation.
If update_p is true, add a new mapping between the LHS of
each new PHI and the name that it replaces.
(insert_phi_nodes_1): Only call find_idf if needed.
(get_reaching_def): Call get_default_def_for.
(rewrite_operand): Remove.
(rewrite_stmt): Do nothing if REGISTER_DEFS_IN_THIS_STMT
and REWRITE_THIS_STMT are false.
Assume that all the operands in the statement are in
normal form.
(rewrite_add_phi_arguments): Don't use PHI_REWRITTEN.
(rewrite_virtual_phi_arguments): Remove.
(invalidate_name_tags): Remove.
(register_new_update_single, register_new_update_set,
rewrite_update_init_block, replace_use,
rewrite_update_fini_block, rewrite_update_stmt,
rewrite_update_phi_arguments): New.
rewrite_blocks): Remove argument 'fix_virtual_phis'.
Add arguments 'entry', 'what' and 'blocks'.
Initialize the dominator walker according to 'what' and
'blocks'.
Start the dominator walk at 'entry'.
(mark_def_site_blocks): Add argument 'interesting_blocks'.
Use it to configure the dominator walker.
(rewrite_into_ssa): Remove argument 'all'.
Make internal.
(rewrite_all_into_ssa): Remove.
(rewrite_def_def_chains): Remove.
(mark_def_interesting, mark_use_interesting,
prepare_phi_args_for_update, prepare_block_for_update,
prepare_def_site_for, prepare_def_sites,
dump_names_replaced_by, debug_names_replaced_by,
dump_repl_tbl, debug_repl_tbl, init_update_ssa,
delete_update_ssa, create_new_def_for,
register_new_name_mapping, mark_sym_for_renaming,
mark_set_for_renaming, need_ssa_update_p,
name_registered_for_update_p, ssa_names_to_replace,
release_ssa_name_after_update_ssa,
insert_updated_phi_nodes_for, update_ssa): New.
* tree-loop-linear.c (linear_transform_loops): Call
update_ssa instead of rewrite_into_ssa.
* tree-optimize.c (vars_to_rename): Remove.
Update all users.
(init_tree_optimization_passes): Replace
pass_redundant_phi with pass_copy_prop.
Add pass_vrp.
Replace pass_ccp with pass_store_ccp.
Add pass_store_copy_prop after pass_store_ccp.
(execute_todo): If the TODO_ flags don't include updating
the SSA form, assert that it does not need to be updated.
Call update_ssa instead of rewrite_into_ssa and
rewrite_def_def_chains.
If TODO_verify_loops is set, call verify_loop_closed_ssa.
(tree_rest_of_compilation):
* tree-pass.h (TODO_dump_func, TODO_ggc_collect,
TODO_verify_ssa, TODO_verify_flow, TODO_verify_stmts,
TODO_cleanup_cfg): Renumber.
(TODO_verify_loops, TODO_update_ssa,
TODO_update_ssa_no_phi, TODO_update_ssa_full_phi,
TODO_update_ssa_only_virtuals): Define.
(pass_copy_prop, pass_store_ccp, pass_store_copy_prop, pass_vrp):
Declare.
* tree-phinodes.c (make_phi_node): Update documentation.
(remove_all_phi_nodes_for): Remove.
(find_phi_node_for): New.
* tree-pretty-print.c (dump_generic_node): Handle ASSERT_EXPR.
* tree-scalar-evolution.c (follow_ssa_edge_in_rhs): Likewise.
(interpret_rhs_modify_expr): Likewise.
* tree-sra.c (decide_instantiations): Mark all symbols in
SRA_CANDIDATES for renaming.
(mark_all_v_defs_1): Rename from mark_all_v_defs.
(mark_all_v_defs): New function. Update all users to call it
with the whole list of scalarized statements, not just the
first one.
* tree-ssa-alias.c (count_ptr_derefs): Make extern.
(compute_flow_insensitive_aliasing): If the tag is
unmodifiable and the variable isn't or vice-versa, don't
make them alias of each other.
(setup_pointers_and_addressables): If the type tag for
VAR is about to change, mark the old one for renaming.
(add_type_alias): New.
* tree-ssa-ccp.c: Document SSA-CCP and STORE-CCP.
(ccp_lattice_t): Rename from latticevalue.
(value): Remove. Update all users.
(const_val): New local variable.
(do_store_ccp): New local variable.
(dump_lattice_value): Handle UNINITIALIZED.
(debug_lattice_value): New.
(get_default_value): Re-write.
(set_lattice_value): Re-write.
(def_to_varying): Remove. Update all users.
(likely_value): Return VARYING for statements that make
stores when STORE_CCP is false.
Return VARYING for any statement other than MODIFY_EXPR,
COND_EXPR and SWITCH_EXPR.
(ccp_initialize): Re-write.
(replace_uses_in, replace_vuse_in, substitute_and_fold):
Move to tree-ssa-propagate.c.
(ccp_lattice_meet): Handle memory stores when
DO_STORE_CCP is true.
(ccp_visit_phi_node): Likewise.
(ccp_fold): Likewise.
(evaluate_stmt): Likewise.
(visit_assignment): Likewise.
(ccp_visit_stmt): Likewise.
(execute_ssa_ccp): Add argument 'store_ccp'. Copy it
into DO_STORE_CCP.
(do_ssa_ccp): New.
(pass_ccp): Use it.
(do_ssa_store_ccp): New.
(gate_store_ccp): New.
(pass_store_ccp): Declare.
* tree-ssa-copy.c: Include tree-ssa-propagate.h.
(may_propagate_copy): Reformat.
Don't abort if ORIG is a virtual and DEST isn't.
If NEW does not have alias information but DEST does,
copy it.
(copy_of, cached_last_copy_of, do_store_copy_prop, enum
copy_prop_kind, which_copy_prop): Declare.
(stmt_may_generate_copy, get_copy_of_val,
get_last_copy_of, set_copy_of_val, dump_copy_of,
copy_prop_visit_assignment, copy_prop_visit_cond_stmt,
copy_prop_visit_stmt, copy_prop_visit_phi_node,
init_copy_prop, fini_copy_prop, execute_copy_prop,
gate_copy_prop, do_copy_prop, gate_store_copy_prop,
store_copy_prop): New.
(pass_copy_prop, pass_store_copy_prop): Declare.
* tree-ssa-dom.c (struct opt_stats_d): Add fields
'num_const_prop' and 'num_copy_prop'.
(cprop_operand): Update them.
(dump_dominator_optimization_stats): Dump them.
(tree_ssa_dominator_optimize): Call update_ssa instead of
rewrite_into_ssa.
(loop_depth_of_name): Declare extern.
(simplify_cond_and_lookup_avail_expr): Guard against NULL
values for LOW or HIGH.
(cprop_into_successor_phis): Only propagate if NEW != ORIG.
(record_equivalences_from_stmt): Call expr_computes_nonzero.
(cprop_operand): Only propagate if VAL != OP.
* tree-ssa-dse.c (dse_optimize_stmt): Mark symbols in removed
statement for renaming.
* tree-ssa-loop-im.c (move_computations): Call update_ssa.
* tree-ssa-loop-ivopts.c (rewrite_address_base): Call
add_type_alias if necessary.
Call mark_new_vars_to_rename.
(tree_ssa_iv_optimize): If new symbols need to be renamed,
mark every statement updated, call update_ssa and
rewrite_into_loop_closed_ssa.
* tree-ssa-loop-manip.c (add_exit_phis): Do not remove DEF_BB
from LIVEIN if VAR is a virtual.
* tree-ssa-loop.c (tree_loop_optimizer_init): Call update_ssa.
* tree-ssa-operands.c (get_expr_operands): Handle ASSERT_EXPR.
(get_call_expr_operands): Reformat statement.
(add_stmt_operand): Don't create V_MAY_DEFs for read-only
symbols.
* tree-ssa-propagate.c (ssa_prop_init): Initialize
SSA_NAME_VALUE for every name.
(first_vdef, stmt_makes_single_load, stmt_makes_single_store,
get_value_loaded_by): New.
(replace_uses_in, replace_vuses_in, replace_phi_args_in,
substitute_and_fold): Move from tree-ssa-ccp.c.
* tree-ssa-propagate.h (struct prop_value_d, prop_value_t,
first_vdef, stmt_makes_single_load, stmt_makes_single_store,
get_value_loaded_by, replace_uses_in, substitute_and_fold):
Declare.
* tree-ssa.c (verify_use): Fix error message.
(propagate_into_addr, replace_immediate_uses, get_eq_name,
check_phi_redundancy, kill_redundant_phi_nodes,
pass_redundant_phi): Remove. Update all users.
* tree-vect-transform.c (vect_create_data_ref_ptr): Call
add_type_alias, if necessary.
* tree-vectorizer.h (struct _stmt_vect_info): Update
documentation for field 'memtag'.
* tree-vrp.c: New file.
* tree.def (ASSERT_EXPR): Define.
* tree.h (ASSERT_EXPR_VAR): Define.
(ASSERT_EXPR_COND): Define.
(SSA_NAME_VALUE_RANGE): Define.
(struct tree_ssa_name): Add field 'value_range'.
(PHI_REWRITTEN): Remove.
(struct tree_phi_node): Remove field 'rewritten'.
* doc/invoke.texi (-fdump-tree-storeccp, -ftree-copy-prop,
-ftree-store-copy-prop): Document.
* doc/tree-ssa.texi: Remove broken link to McCAT's compiler.
Document usage of update_ssa.
testsuite/ChangeLog
* g++.dg/tree-ssa/pr18178.C: New test.
* gcc.c-torture/execute/20030216-1.x: Ignore at -O1.
* gcc.c-torture/execute/20041019-1.c: New test.
* gcc.dg/tree-ssa/20041008-1.c: New test.
* gcc.dg/tree-ssa/ssa-ccp-12.c: New test.
* gcc.dg/tree-ssa/20030731-2.c: Update to use -fdump-tree-store_ccp.
* gcc.dg/tree-ssa/20030917-1.c: Likewise.
* gcc.dg/tree-ssa/20030917-3.c: Likewise.
* gcc.dg/tree-ssa/20040721-1.c: Likewise.
* gcc.dg/tree-ssa/ssa-ccp-1.c: Likewise.
* gcc.dg/tree-ssa/ssa-ccp-2.c: Likewise.
* gcc.dg/tree-ssa/ssa-ccp-3.c: Likewise.
* gcc.dg/tree-ssa/ssa-ccp-7.c: Likewise.
* gcc.dg/tree-ssa/ssa-ccp-9.c: Likewise.
From-SVN: r97884
2005-04-05 Andrew MacLeod <amacleod@redhat.com>
* lambda-code.c (lambda_loopnest_to_gcc_loopnest): Use update_stmt.
Use immediate use iterator.
(stmt_is_bumper_for_loop): Use immediate use iterator.
* predict.c (strip_builtin_expect): Use update_stmt.
* tree-cfg.c (update_modified_stmts): New. Call update_stmt_if_modified
on all elements of a STATEMENT_LIST.
(bsi_insert_before, bsi_insert_after): Call update_modified_stmts.
(bsi_remove): Remove imm_use links and mark the stmt as modified.
(bsi_replace): Mark stmt as modified and the update it.
* tree-complex.c (update_complex_assignment): Call mark_stmt_modified.
(expand_complex_libcal): Call update_stmt.
(expand_complex_comparison): Call mark_stmt_modified.
(expand_complex_operations_1): Call update_stmt_if_modified.
(expand_vector_operations_1): Call mark_stmt_modified.
* tree-dfa.c (compute_immediate_uses, free_df_for_stmt, free_df,
compute_immediate_uses_for_phi, compute_immediate_uses_for_stmt,
add_immediate_use, redirect_immediate_use,
redirect_immediate_uses, dump_immediate_uses, debug_immediate_uses,
dump_immediate_uses_for, debug_immediate_uses_for): Delete.
(mark_new_vars_to_rename): Call update_stmt.
* tree-dump.c (dump_option_value_in): Add "stmtaddr".
* tree-flow-inline.h (modify_stmt): Rename to mark_stmt_modified.
Ignore PHI nodes.
(unmodify_stmt): Delete.
(update_stmt): New. Force an update of a stmt.
(update_stmt_if_modified): update a stmt if it is out of date.
(get_stmt_operands): Verify stmt is NOT modified.
(stmt_modified_p): Update comment.
(delink_imm_use): Remove a use node from its immuse list.
(link_imm_use_to_list): Link a use node to a specific list.
(link_imm_use): Link a node to the correct list.
(set_ssa_use_from_ptr): Set a use node to a specific value, and insert
it in the correct list, if appropriate.
(link_imm_use_stmt): Link a use node, and set the stmt pointer.
(relink_imm_use): Link a use node in place of another node in a list.
(relink_imm_use_stmt): LInk a node in place of another node, and set
the stmt pointer.
(end_safe_imm_use_traverse): New. Terminate a safe immuse iterator.
(end_safe_imm_use_p): New. Check for the end of a safe immuse iterator.
(first_safe_imm_use): New. Initialize a safe immuse iterator.
(next_safe_imm_use): New. Proceed to next safe immuse iterator value.
(end_readonly_imm_use_p): New. Check for end of a fast immuse iterator.
(first_readonly_imm_use): New. Initialize a fast immuse iterator.
(next_readonly_imm_use): New. Get the next fast immuse iterator value.
(has_zero_uses): New. Return true if there are no uses of a var.
(has_single_use): New. Return true if there is only a single use of a
variable.
(single_imm_use): New. Return the simgle immediate use.
(num_imm_uses): New. Return the number of immediate uses.
(get_v_must_def_ops): Use is now a pointer.
(use_operand_p, get_v_may_def_op_ptr, get_vuse_op_ptr,
get_v_must_def_kill_ptr, get_phi_arg_def_ptr): Return the address of
the use node.
(get_immediate_uses, num_immediate_uses, immediate_use): Delete.
(delink_stmt_imm_use): Delink all immuses from a stmt.
(phi_arg_index_from_use): New. Return a phi arg index for a use.
* tree-flow.h (struct dataflow_d): Delete.
(immediate_use_iterator_d): New. Immediate use iterator struct.
(FOR_EACH_IMM_USE_FAST): New. Macro for read only immuse iteration.
(FOR_EACH_IMM_USE_SAFE): New. Macro for write-safe immuse iteration.
(BREAK_FROM_SAFE_IMM_USE): New. Macro for earlyu exit from write-safe
iteration.
(struct stmt_ann_d): Remove dataflow_t from struct.
* tree-if-conv.c (tree_if_conversion). Don't call free_df.
(if_convertible_phi_p): Use FAST immuse iterator.
(if_convertible_loop_p): Don't call compute_immediate_uses.
(replace_phi_with_cond_modify_expr): Call update_stmt.
* tree-into-ssa.c (mark_def_sites, ssa_mark_def_sites): Call
update_stmt_if_modified.
(rewrite_all_into_ssa): Initialize ssa operands.
* tree-loop-linear.c (linear_transform_loops): Don't call free_df or
compute_immediate_uses.
* tree-optimize.c (execute_todo): Call verify_ssa whenever the
ssa_property is available.
(execute_one_pass): Change parameters passed to execute_todo.
* tree-outof-ssa.c (rewrite_trees): Don't call modify_stmt.
(remove_ssa_form): Call fini_ssa_operands.
(insert_backedge_copies): Delete call to modify_stmt.
* tree-phinodes.c (make_phi_node): Initialize use nodes.
(release_phi_node): Delink any use nodes before releasing.
(resize_phi_node): Relink any use nodes.
(remove_phi_arg_num): Delink the use node.
(remove_phi_node): Release the ssa_name AFTER releasing the phi node.
(remove_all_phi_nodes_for): Release phi node first.
* tree-pretty-print.c (dump_generic_node): Print stmt address.
* tree-sra.c (mark_all_v_defs): Call update_stmt_if_modified.
(scalarize_use, scalarize_copy): Call update_stmt.
* tree-ssa-alias.c (compute_may_aliases): Update all modified stmts.
(compute_points_to_and_addr_escape): Call mark_stmt_modified.
* tree-ssa-cpp.c (need_imm_uses_for): Delete.
(ccp_initialize): Remove call to compute_immediate_uses.
(substitute_and_fold, execute_fold_all_builtins): Call update_stmt.
* tree-ssa-dom.c (tree_ssa_dominator_optimize): Update all modified
stmts.
(simplify_cond_and_lookup_avail_expr): Call mark_stmt_modified.
(simplify_switch_and_lookup_avail_expr): Call mark_stmt_modified.
(eliminate_redundant_computations): Call mark_stmt_modified.
(cprop_operand): Call mark_stmt_modified.
(optimize_stmt): Call update_stmt_if_modified and mark_stmt_modified.
* tree-ssa-dse.c (fix_phi_uses, fix_stmt_v_may_defs): Delete.
(dse_optimize_stmt): Use new immuse interface.
(tree_ssa_dse): Remove calls to compute_immediate_uses and free_df.
* tree-ssa-forwprop.c (need_imm_uses_for): Delete.
(substitute_single_use_vars): Use new immuse interface.
(tree_ssa_forward_propagate_single_use_vars): Remove calls to free_df
and compute_immediate_uses.
* tree-ssa-loop-im.c (single_reachable_address): Use new immuse
interface.
(rewrite_mem_refs): Call update_stmt.
(determine_lsm): Remove call to compute_imm_uses and free_df.
* tree-ssa-loop-ivcanon.c (create_canonical_iv): Call update_stmt.
(try_unroll_loop_completely): Call update_stmt.
* tree-ssa-loop-ivopts.c (rewrite_address_base): Call update_stmt.
(rewrite_use_compare): Call update_stmt.
(compute_phi_arg_on_exit): Insert each stmt before trying to process.
(rewrite_use) : Call update_stmt.
* tree-ssa-loop-manip.c (verify_loop_closed_ssa): Add arg to call.
* tree-ssa-loop-unswitch.c (tree_unswitch_single_loop): Call
update_stmt.
* tree-ssa-operands.c (NULL_USE_OPERAND_P): Remove declaration.
(allocate_use_optype, allocate_vuse_optype): Adjust allocation size.
(free_uses, free_vuses, free_v_may_defs, free_v_must_defs): Delink
use nodes.
(initialize_vuse_operand): New. Initialize a vuse operand.
(initialize_v_may_def_operand): New. Initialize a maydef operand.
(initialize_v_must_def_operand): New. Initialize a mustdef operand.
(finalize_ssa_defs): Use stmt parameter.
(correct_use_link): Ensure a use node is in the correct list, and has
the correct stmt pointer.
(finalize_ssa_uses, finalize_ssa_v_may_defs, finalize_ssa_vuses,
finalize_ssa_v_must_defs): Also initialize use nodes.
(finalize_ssa_stmt_operands): Pass extra stmt operands.
(build_ssa_operands): Seperate parsing from final operand construction.
(parse_ssa_operands): New. Parse entry point for operand building.
(swap_tree_operands): New. Swap 2 tree operands.
(update_stmt_operands): Ranamed from get_stmt_operands. Always builds
operands.
(get_expr_operands): Call swap_tree_operands when needed.
(copy_virtual_operands): Use initialize routines for virtual use ops.
(create_ssa_artficial_load_stmt): Add extra stmt parameter.
(verify_abort): New. Issue imm_use error.
(verify_imm_links): New Verify imm_use links for a var.
(dump_immediate_uses_for): New. Dump imm_uses for a var to file.
(dump_immediate_uses): New. Dump imm_uses for all vars to file.
(debug_immediate_uses): New. Dump imm_uses for all vars to stderr.
(debug_immediate_uses_for): New. Dump imm_uses for a var to stderr.
* tree-ssa-operands.h (struct use_operand_ptr): Delete.
(NULL_USE_OPERAND_P) Define.
(use_optype_d, v_def_use_operand_type, vuse_optype_d): Add immediate
use node.
(struct vuse_operand_type): New struct.
(SET_USE): Call set_ssa_use_from_ptr.
(USE_STMT): Define.
(PHI_ARG_INDEX_FROM_USE): Define.
* tree-ssa-phiopt.c (replace_phi_edge_with_variable): Set the phi
argument via SET_USE, not PHI_ARG_DEF_TREE.
* tree-ssa-pre.c (eliminate): Call update_stmt.
* tree-ssa-propagate.c (cfg_blocks_get): Use imm_use iterators. Don't
call free_df.
* tree-ssa-sink.c (all_immediate_uses_same_place): Use imm_use iterator.
(nearest_common_dominator_of_uses): Use imm_use iterator.
(statement_sink_location): Use imm_use iterator and interface.
(execute_sink_code): Don't call compute_immediate_uses or free-df.
* tree-ssa-threadupdate.c (create_edge_and_update_destination_phis): Use
PHI_ARG_DEF, not PHI_ARG_DEF_TREE.
* tree-ssa.c (verify_use, verify_phi_args): Verify some imm_use info.
(verify_ssa): Ensure no stmt is marked modify after optimization pass
if new parameter is true.
(init_tree_ssa): Don't initialize operand cache here.
(delete_tree_ssa): Don't destroy operand cache here.
(propagate_into_addr): Pass in a use pointer, return true if anything
was changed.
(replace_immediate_uses): Use imm_use iterator, call update_stmt.
(check_phi_redundancy): Use imm_use iterator.
(kill_redundant_phi_nodes): Don't call compute_immediate_uses or
free_df.
* tree-ssanames.c (make_ssa_name): Initialize imm_use node.
(release_ssa_name): Delink node and all elements in its imm_use list.
* tree-tailcall.c (adjust_return_value): Call update_stmt.
* tree-vect-analyze.c (vect_stmt_relevant_p): Use imm_use iterator.
* tree-vectorizer.c (need_imm_uses_for): Delete.
(vectorize_loops): Dont call compute_immediate_uses or free_df.
* tree.h (struct ssa_imm_use_d): Define.
(SSA_NAME_IMM_USE_NODE): Define.
(struct tree_ssa_name): Add imm_use node.
(PHI_DF): Delete.
(PHI_ARG_IMM_USE_NODE): Define.
(struct phi_arg_d): Add imm_use node.
(struct tree_phi_node): Remove struct dataflow_d element.
(TDF_STMTADDR): Define.
From-SVN: r97648
* tree-ssa.c (execute_early_warn_uninitialized): Pass context node
to talk_tree as 'data' parameter, rather than EXPR_LOCUS.
(warn_uninit): Get EXPR_LOCUS from context now instead.
This fixes a USE_MAPPED_LOCATION testsuite failure.
* tree-ssa.c (warn_uninitialized_var): Remove useless local.
From-SVN: r97644
2005-03-30 Daniel Berlin <dberlin@dberlin.org>
* tree-ssa-alias.c (compute_flow_insensitive_aliasing): Make sure
subvars get marked properly in tags for grouping.
(add_pointed_to_var): Mark only actual pointed to
variables/subvars in addresses needed.
(create_overlap_variables_for): Clear call clobbered on original
variable.
* tree-ssa-operands.c (get_asm_expr_operands): Don't let regular
addresable vars with subvars into list.
* tree-ssa.c (verify_ssa_name): Verify original is not used where
subvar should be.
From-SVN: r97285
PR middle-end/19874
* tree-ssa.c (tree_ssa_useless_type_conversion_1): A conversion
between different machine modes is never a "useless" conversion.
* gcc.c-torture/execute/20050119-2.c: New test case.
From-SVN: r95688
PR tree-optimization/20100
PR tree-optimization/20115
* tree-optimize.c (init_tree_optimization_passes): Remove
pass_maybe_create_global_var.
* tree-pass.h (pass_maybe_create_global_var): Remove.
* tree-ssa-alias.c (aliases_computed_p): Declare.
(struct alias_info): Add field NUM_PURE_CONST_CALLS_FOUND.
(count_calls_and_maybe_create_global_var): Remove.
(pass_maybe_create_global_var): Remove.
(init_alias_info): Do not declare aliases_computed_p.
(maybe_create_global_var): If the function contains no
call-clobbered variables and a mix of pure/const and regular
function calls, create .GLOBAL_VAR.
Mark all call-clobbered variables for renaming.
(merge_pointed_to_info): Update comment.
(add_pointed_to_var): Likewise.
(is_escape_site): Likewise.
Accept struct alias_info * instead of size_t *.
Update all users.
Update AI->NUM_CALLS_FOUND and AI->NUM_PURE_CONST_CALLS_FOUND
as necessary.
* tree-ssa-operands.c (get_call_expr_operands): If
ALIASES_COMPUTED_P is false, do not add call-clobbering
operands.
* tree-ssa.c (init_tree_ssa): Set ALIASES_COMPUTED_P to false.
(delete_tree_ssa): Likewise.
testsuite/ChangeLog
PR tree-optimization/20100
PR tree-optimization/20115
* gcc.dg/pr20115.c: New test.
* gcc.dg/pr20115-1.c: New test.
* gcc.dg/pr20100.c: New test.
* gcc.dg/tree-ssa/20040517-1.c: Expect virtual operands for
call-clobbered variables after alias1.
From-SVN: r95437
2005-02-03 Andrew Pinski <pinskia@physics.uc.edu>
PR tree-opt/19763
* gcc.c-torture/compile/pr19736.c: New test.
2005-02-03 Andrew Pinski <pinskia@physics.uc.edu>
PR tree-opt/19736
* tree-ssa.c (replace_immediate_uses): Update the immediate_uses
information for the new statement.
From-SVN: r94658
PR tree-optimization/19121
* tree-ssa-alias.c (compute_flow_sensitive_aliasing): When
adding aliases to a name tag, also add them to the pointer's
type tag.
* tree-ssa-copy.c (merge_alias_info): Do not merge flow
sensitive alias info at all. Only check that the two pointers
have compatible pointed-to sets.
* tree-ssa.c (verify_name_tags): Verify that the alias set of
a pointer's type tag is a superset of the alias set of the
pointer's name tag.
testsuite/ChangeLog:
PR tree-optimization/19121
* gcc.c-torture/compile/pr19121.c: New test.
From-SVN: r93810
2004-11-28 Andrew Pinski <pinskia@physics.uc.edu>
* timevar.def (TV_TREE_REDPHI): New timevar.
* tree-ssa.c (pass_redundant_phi): Use TV_TREE_REDPHI for the tv id.
From-SVN: r91438
* tree-ssa.c (verify_flow_sensitive_alias_info): Don't
retrieve annotations or pointer info before it's necessary.
Reorder tests for early continue of the loop. Manually CSE
SSA_NAME_VAR.
From-SVN: r91347
* tree-phinodes.c (add_phi_arg): Take "tree" instead of
"tree *" as the first argument.
* tree-flow.h: Update the prototype of add_phi_arg.
* lambda-code.c, tree-cfg.c, tree-into-ssa.c,
tree-ssa-loop-ivopts.c, tree-ssa-loop-manip.c, tree-ssa-pre.c,
tree-ssa-threadupdate.c, tree-ssa.c, tree-tailcall.c,
tree-vectorizer.c: Update all call sites of add_phi_arg.
From-SVN: r91307
* tree-phinode.c (resize_phi_node): Abort when LEN is strictly
greater than PHI_ARG_CAPACITY.
(reserve_phi_args_for_new_edge): Initialize the new PHI
argument to NULL_TREE. Increment PHI_NUM_ARGS.
(add_phi_arg): Add a PHI argument to the slot given by
E->dest_idx.
(remove_phi_arg_num): Do not write to PHI_ARG_EDGE.
* tree-flow-inline (phi_arg_from_edge): Return E->dest_idx.
* tree-ssa.c (ssa_redirect_edge): Check for a missing PHI
argument by looking at PHI_ARG_DEF.
(verify_phi_args): Check for a missing PHI argument. Remove
the check for duplicate PHI arguments.
* tree.h (PHI_ARG_EDGE): Redefine in terms of EDGE_PRED.
(phi_arg_d): Remove e.
From-SVN: r91097
2004-11-22 Daniel Berlin <dberlin@dberlin.org>
* tree-ssa.c (verify_ssa): SSA_OP_ALL_USES should be
SSA_OP_ALL_USES | SSA_OP_ALL_KILLS for verification purposes.
From-SVN: r91026
* tree-ssa.c (verify_use): Fix comment.
(verify_phi_args): Check that the number of incoming edges matches
the number of PHI arguments. Check that each PHI argument is
either an SSA_NAME or an invariant. Coalesce tests for PHIs for
dead or duplicated edges. Clear e->aux earlier and avoid separate
loop to clear e->aux and test for missed edges.
(verify_ssa): Remove first walk over statements. Move checking
of PHI args into verify_phi_args. Move checking of statements
with aliased stores and V_MAY_DEFS into the remaining loop over
the statements. Register defs by walking through the formal
SSA_NAME table.
From-SVN: r91000
* tree-ssa.c (walk_use_def_chains_1): Make the visited map a
pointer set instead of a bitmap.
(walk_use_def_chains): Create, pass and clean up that pointer_set.
* tree-ssa-alias.c (struct alias_info): Make the ssa_names_visited
field an sbitmap.
(init_alias_info): Allocate and zero it here.
(delete_alias_info): Delete it here.
(collect_points_to_info_for): Use it.
From-SVN: r90508
ChangeLog:
PR tree-optimization/18184
* c-typeck.c (comptypes): Do not treat pointers of different
modes or alias-all flags as equivalent.
* tree-ssa.c (tree_ssa_useless_type_conversion_1): Likewise.
cp/ChangeLog:
PR tree-optimization/18184
* cp-objcp-common.c (cxx_types_compatible_p): Do not treat pointers
of different modes or alias-all flags as equivalent.
* typeck.c (comptypes): Likewise.
From-SVN: r90078
2004-11-02 Andrew Pinski <pinskia@physics.uc.edu>
PR tree-opt/16808
* gcc.c-torture/compile/pr16808.c: New test.
2004-11-02 Andrew Pinski <pinskia@physics.uc.edu>
PR tree-opt/16808
* tree-ssa.c (replace_immediate_uses): If we call fold_stmt, make sure
that the vops get marked for renaming.
From-SVN: r89990
2004-10-27 Daniel Berlin <dberlin@dberlin.org>
Fix PR tree-optimization/17133
* tree-cfg.c (rewrite_to_new_ssa_names_bb): Also rewrite must
def kill operand.
* tree-flow-inline.h: V_MUST_DEF_OP became V_MUST_DEF_RESULT.
(get_v_must_def_result_ptr): Modify for new structure of
v_must_defs array.
(get_v_must_def_kill_ptr): New.
(op_iter_next_use): Add support for the kill that occurs in V_MUST_DEFs.
(op_iter_next_tree): Ditto. Also V_MAY_DEF_OP became V_MAY_DEF_RESULT.
(op_iter_next_def): V_MAY_DEF_OP became V_MAY_DEF_RESULT.
(op_iter_init): Initialize new mustu members.
(op_iter_next_mustdef): New function.
(op_iter_init_mustdef): Ditto.
* tree-flow.h (rewrite_def_def_chains): New function.
* tree-into-ssa.c (mark_def_sites): Handle mustdefkill operands.
(ssa_mark_def_sites): Ditto.
(rewrite_stmt): Ditto.
(ssa_rewrite_stmt): Ditto.
(rewrite_blocks): Factor out from rewrite_into_ssa.
(mark_def_block_sites): Ditto.
(rewrite_def_def_chains): New function, just rewrites def-def
chains without phi node insertion.
* tree-pass.h (TODO_fix_def_def_chains): New todo flag.
* tree-optimize.c (execute_todo): Handle TODO_fix_def_def_chains.
* tree-pretty-print.c (dump_vops): Print out MUST_DEF's so that
they include the rhs now.
* tree-ssa-ccp.c (visit_assignment): V_MUST_DEF_OP became
V_MUST_DEF_RESULT.
* tree-ssa-dce.c (mark_operand_necessary): Add phionly argument.
Update callers.
(mark_really_necessary_kill_operand_phis): New function.
(perform_tree_ssa_dce): Call it.
(pass_dce): Add TODO_fix_def_def_chains.
(pass_cd_dce): Ditto.
* tree-ssa-loop-im.c (determine_max_movement): Look at kills as
well.
(rewrite_mem_refs): Ditto.
* tree-ssa-loop-manip.c (find_uses_to_rename_stmt): Look at kills
as well.
* tree-ssa-operands.c (allocate_v_may_def_optype):
v_may_def_operand_type_t became v_def_use_operand_type_t.
(allocate_v_must_def_optype) Ditto.
(finalize_ssa_v_must_defs): Update for new operand type, as well
as setting the use portion as well.
(copy_virtual_operands): Copy the kill operand as well.
(create_ssa_artficial_load_stmt): V_MUST_DEF_OP became
V_MUST_DEF_RESULT.
* tree-ssa-operands.h (v_may_def_operand_type): Renamed to
v_def_use_operand_type.
(v_must_def_optype_d): Use v_def_use_operand_type.
(V_MUST_DEF_OP_*): Renamed to V_MUST_DEF_RESULT_*
(V_MUST_DEF_KILL_*): New macros.
(struct ssa_operand_iterator_d): Add num_v_mustu and v_mustu_i
members.
Rename existing must_i and num_v_must members to mustd_i and
num_v_mustd.
(SSA_OP_VMUSTDEFKILL): New flag.
(SSA_OP_VIRTUAL_KILLS): New flag.
(SSA_OP_ALL_OPERANDS): Add in SSA_OP_ALL_KILLS.
(SSA_OP_ALL_KILLS): New flag.
(FOR_EACH_SSA_MUSTDEF_OPERAND): New macro.
* tree-ssa.c (verify_ssa): Verify virtual kills as well.
* tree-vectorizer.c (vect_create_data_ref_ptr): V_MUST_DEF_OP
became V_MUST_DEF_RESULT.
(rename_variables_in_bb): Rename kill pointer as well.
* tree-dfa.c (compute_immediate_uses_for_stmt): Add kills into the
immediate uses.
From-SVN: r89695
* tree-cfg.c (bsi_for_stmt): Rename from stmt_for_bsi.
Update all callers.
* tree-ssa.c (replace_immediate_uses): Call bsi_for_stmt.
Don't call fold_stmt more than once, use bsi_replace.
From-SVN: r89234
PR tree-optimization/17656
* tree-ssa.c (replace_immediate_uses): When replacing a
constant, if the call to fold_stmt produced a different
statement, get an appropriate statement pointer by scanning
STMT's basic block.
PR tree-optimization/17656
* testsuite/gcc.c-torture/compile/pr17656.c: New test.
From-SVN: r89233
2004-10-12 Daniel Berlin <dberlin@dberlin.org>
* tree-ssa-alias.c (verify_name_tags): New function.
(verify_flow_sensitive_alias_info): Remove code that used to check name tags.
(verify_alias_info): Call verify_name_tags.
From-SVN: r88945
2004-09-21 Daniel Berlin <dberlin@dberlin.org>
* tree-ssa.c (verify_def): Use print_generic_stmt,
not debug_generic_stmt.
(verify_use): Ditto.
(verify_phi_args): Ditto.
(verify_ssa): Ditto.
From-SVN: r87835
PR tree-optimization/17273
* tree-ssa.c (replace_immediate_uses): Call fold_stmt if the
replacement is a constant.
testsuite/ChangeLog
PR tree-optimization/17273
* gcc.c-torture/compile/pr17273.c: New test.
From-SVN: r87662
