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* [Bug middle-end/36201] New: NVR in the front-end causes missed optimization later on (<retval> thought to alias arguments)
@ 2008-05-10 19:36 pinskia at gcc dot gnu dot org
2008-05-13 8:44 ` [Bug middle-end/36201] " rguenth at gcc dot gnu dot org
` (12 more replies)
0 siblings, 13 replies; 14+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2008-05-10 19:36 UTC (permalink / raw)
To: gcc-bugs
Testcase:
#define SIZE 1024
While looking into why manually SRA'd testcase worked better. I found this
interesting problem.
Take:
struct a
{
long long b;
a();
};
a f(a &g, a &h)
{
int i;
a res = g;
for (i = 0; i < SIZE; i++)
res.b += h.b;
return res;
}
at -O2 we change res here to <retval> so we have <retval> in the inner loop.
If we supply -fno-elide-constructors which disables NVR in C++ front-end, we
get good code of doing loop based Copy Prop (SCEV copy prop) as we able to pull
out res.b. The issue is that we say h can alias <retval> but we don't say the
same thing for res though.
--
Summary: NVR in the front-end causes missed optimization later on
(<retval> thought to alias arguments)
Product: gcc
Version: 4.4.0
Status: UNCONFIRMED
Keywords: missed-optimization, alias
Severity: enhancement
Priority: P3
Component: middle-end
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: pinskia at gcc dot gnu dot org
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36201
^ permalink raw reply [flat|nested] 14+ messages in thread
* [Bug middle-end/36201] NVR in the front-end causes missed optimization later on (<retval> thought to alias arguments)
2008-05-10 19:36 [Bug middle-end/36201] New: NVR in the front-end causes missed optimization later on (<retval> thought to alias arguments) pinskia at gcc dot gnu dot org
@ 2008-05-13 8:44 ` rguenth at gcc dot gnu dot org
2008-05-13 9:15 ` rguenth at gcc dot gnu dot org
` (11 subsequent siblings)
12 siblings, 0 replies; 14+ messages in thread
From: rguenth at gcc dot gnu dot org @ 2008-05-13 8:44 UTC (permalink / raw)
To: gcc-bugs
------- Comment #1 from rguenth at gcc dot gnu dot org 2008-05-13 08:43 -------
Confirmed on 32bit targets.
SMT.6, UID D.1708, struct a, is addressable, is global, score: 320004, direct
reads: 0, direct writes: 0, indirect reads: 2, indirect writes: 0, call
clobbered (is global var, is incoming pointer), may aliases: { <retval> }
<retval>, UID D.1678, struct a, is addressable, score: 1280052, direct reads:
2, direct writes: 2, indirect reads: 2, indirect writes: 0, call clobbered (is
global var, is incoming pointer)
It's easy to hack flow-insensitive aliasing to say that RESULT_DECL isn't
really
addressable (which is the difference here I believe) - but it is harder to
argue that this doesn't ever go wrong ;)
With that we get
a f(a&, a&) (struct a & g, struct a & h)
{
long long int pretmp.12;
<bb 2>:
pretmp.12 = h->b;
<retval>.b = (pretmp.12 + g->b) + pretmp.12 * 1023;
return <retval>;
}
Now onto why the following is safe...
Index: tree-ssa-alias.c
===================================================================
--- tree-ssa-alias.c (revision 135255)
+++ tree-ssa-alias.c (working copy)
@@ -3338,6 +3338,10 @@ debug_may_aliases_for (tree var)
bool
may_be_aliased (tree var)
{
+ /* Nothing can alias the result decl. */
+ if (TREE_CODE (var) == RESULT_DECL)
+ return false;
+
/* Obviously. */
if (TREE_ADDRESSABLE (var))
return true;
--
rguenth at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Ever Confirmed|0 |1
GCC target triplet| |i?86-*-*
Last reconfirmed|0000-00-00 00:00:00 |2008-05-13 08:43:57
date| |
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36201
^ permalink raw reply [flat|nested] 14+ messages in thread
* [Bug middle-end/36201] NVR in the front-end causes missed optimization later on (<retval> thought to alias arguments)
2008-05-10 19:36 [Bug middle-end/36201] New: NVR in the front-end causes missed optimization later on (<retval> thought to alias arguments) pinskia at gcc dot gnu dot org
2008-05-13 8:44 ` [Bug middle-end/36201] " rguenth at gcc dot gnu dot org
@ 2008-05-13 9:15 ` rguenth at gcc dot gnu dot org
2008-05-13 11:42 ` rguenth at gcc dot gnu dot org
` (10 subsequent siblings)
12 siblings, 0 replies; 14+ messages in thread
From: rguenth at gcc dot gnu dot org @ 2008-05-13 9:15 UTC (permalink / raw)
To: gcc-bugs
------- Comment #2 from rguenth at gcc dot gnu dot org 2008-05-13 09:14 -------
Nevertheless, mine.
--
rguenth at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
AssignedTo|unassigned at gcc dot gnu |rguenth at gcc dot gnu dot
|dot org |org
Status|NEW |ASSIGNED
Last reconfirmed|2008-05-13 08:43:57 |2008-05-13 09:14:21
date| |
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36201
^ permalink raw reply [flat|nested] 14+ messages in thread
* [Bug middle-end/36201] NVR in the front-end causes missed optimization later on (<retval> thought to alias arguments)
2008-05-10 19:36 [Bug middle-end/36201] New: NVR in the front-end causes missed optimization later on (<retval> thought to alias arguments) pinskia at gcc dot gnu dot org
2008-05-13 8:44 ` [Bug middle-end/36201] " rguenth at gcc dot gnu dot org
2008-05-13 9:15 ` rguenth at gcc dot gnu dot org
@ 2008-05-13 11:42 ` rguenth at gcc dot gnu dot org
2008-05-13 13:16 ` rguenth at gcc dot gnu dot org
` (9 subsequent siblings)
12 siblings, 0 replies; 14+ messages in thread
From: rguenth at gcc dot gnu dot org @ 2008-05-13 11:42 UTC (permalink / raw)
To: gcc-bugs
------- Comment #3 from rguenth at gcc dot gnu dot org 2008-05-13 11:41 -------
The patch isn't really correct, but the problem is that the fact that <result>
is marked addressable is causing flow-insensitive analysis to say that the
incoming pointers can alias it.
Also incoming pointers don't get useful constraints for PTA - they should get
&NONLOCAL (err, ok - we had that once ;)). Or we can simply prune the
points-to set after the fact.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36201
^ permalink raw reply [flat|nested] 14+ messages in thread
* [Bug middle-end/36201] NVR in the front-end causes missed optimization later on (<retval> thought to alias arguments)
2008-05-10 19:36 [Bug middle-end/36201] New: NVR in the front-end causes missed optimization later on (<retval> thought to alias arguments) pinskia at gcc dot gnu dot org
` (2 preceding siblings ...)
2008-05-13 11:42 ` rguenth at gcc dot gnu dot org
@ 2008-05-13 13:16 ` rguenth at gcc dot gnu dot org
2008-12-31 21:12 ` [Bug middle-end/36201] [4.4 Regression] " pinskia at gcc dot gnu dot org
` (8 subsequent siblings)
12 siblings, 0 replies; 14+ messages in thread
From: rguenth at gcc dot gnu dot org @ 2008-05-13 13:16 UTC (permalink / raw)
To: gcc-bugs
------- Comment #4 from rguenth at gcc dot gnu dot org 2008-05-13 13:16 -------
Created an attachment (id=15634)
--> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=15634&action=view)
patch fixing the problem
Regresses gcc.dg/tree-ssa/loadpre1[45].c, see PR36230.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36201
^ permalink raw reply [flat|nested] 14+ messages in thread
* [Bug middle-end/36201] [4.4 Regression] NVR in the front-end causes missed optimization later on (<retval> thought to alias arguments)
2008-05-10 19:36 [Bug middle-end/36201] New: NVR in the front-end causes missed optimization later on (<retval> thought to alias arguments) pinskia at gcc dot gnu dot org
` (3 preceding siblings ...)
2008-05-13 13:16 ` rguenth at gcc dot gnu dot org
@ 2008-12-31 21:12 ` pinskia at gcc dot gnu dot org
2009-01-05 11:19 ` rguenth at gcc dot gnu dot org
` (7 subsequent siblings)
12 siblings, 0 replies; 14+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2008-12-31 21:12 UTC (permalink / raw)
To: gcc-bugs
------- Comment #5 from pinskia at gcc dot gnu dot org 2008-12-31 21:11 -------
Actually this testcase is regression because of the removal of SFTs. in
4.1-4.3, the loop did not exist.
In fact I filed this bug right after SFTs were removed.
The reason why it is considered addressable is because of:
/* Return true if T is a GIMPLE variable whose address is not needed. */
bool
is_gimple_non_addressable (tree t)
{
if (TREE_CODE (t) == SSA_NAME)
t = SSA_NAME_VAR (t);
return (is_gimple_variable (t) && ! needs_to_live_in_memory (t));
}
needs_to_live_in_memory is true because of
return (TREE_ADDRESSABLE (t)
|| is_global_var (t)
|| (TREE_CODE (t) == RESULT_DECL
&& aggregate_value_p (t, current_function_decl)));
And aggregate_value_p is true because of:
if (TREE_CODE (exp) == CALL_EXPR && fndecl && DECL_RESULT (fndecl)
&& DECL_BY_REFERENCE (DECL_RESULT (fndecl)))
return 1;
DECL_BY_REFERENCE is true because this is a nonPOD.
--
pinskia at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Severity|enhancement |normal
Known to fail| |4.4.0
Known to work| |4.3.0 4.1.2
Summary|NVR in the front-end causes |[4.4 Regression] NVR in the
|missed optimization later on|front-end causes missed
|(<retval> thought to alias |optimization later on
|arguments) |(<retval> thought to alias
| |arguments)
Target Milestone|--- |4.4.0
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36201
^ permalink raw reply [flat|nested] 14+ messages in thread
* [Bug middle-end/36201] [4.4 Regression] NVR in the front-end causes missed optimization later on (<retval> thought to alias arguments)
2008-05-10 19:36 [Bug middle-end/36201] New: NVR in the front-end causes missed optimization later on (<retval> thought to alias arguments) pinskia at gcc dot gnu dot org
` (4 preceding siblings ...)
2008-12-31 21:12 ` [Bug middle-end/36201] [4.4 Regression] " pinskia at gcc dot gnu dot org
@ 2009-01-05 11:19 ` rguenth at gcc dot gnu dot org
2009-04-03 10:28 ` [Bug middle-end/36201] [4.4/4.5 " rguenth at gcc dot gnu dot org
` (6 subsequent siblings)
12 siblings, 0 replies; 14+ messages in thread
From: rguenth at gcc dot gnu dot org @ 2009-01-05 11:19 UTC (permalink / raw)
To: gcc-bugs
------- Comment #6 from rguenth at gcc dot gnu dot org 2009-01-05 11:19 -------
Fixed on the alias-improvements branch:
a f(a&, a&) (struct a & g, struct a & h)
{
long long int pretmp.24;
<bb 2>:
# .MEM_12 = VDEF <.MEM_11(D)>
<retval> = *g;
# VUSE <.MEM_12>
pretmp.24 = h->b;
# .MEM_7 = VDEF <.MEM_12>
<retval>.b = [plus_expr] (pretmp.24 + <retval>.b) + pretmp.24 * 1023;
# VUSE <.MEM_7>
return <retval>;
}
--
rguenth at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
BugsThisDependsOn| |37696
Priority|P3 |P2
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36201
^ permalink raw reply [flat|nested] 14+ messages in thread
* [Bug middle-end/36201] [4.4/4.5 Regression] NVR in the front-end causes missed optimization later on (<retval> thought to alias arguments)
2008-05-10 19:36 [Bug middle-end/36201] New: NVR in the front-end causes missed optimization later on (<retval> thought to alias arguments) pinskia at gcc dot gnu dot org
` (5 preceding siblings ...)
2009-01-05 11:19 ` rguenth at gcc dot gnu dot org
@ 2009-04-03 10:28 ` rguenth at gcc dot gnu dot org
2009-04-03 10:33 ` [Bug middle-end/36201] [4.4 " rguenth at gcc dot gnu dot org
` (5 subsequent siblings)
12 siblings, 0 replies; 14+ messages in thread
From: rguenth at gcc dot gnu dot org @ 2009-04-03 10:28 UTC (permalink / raw)
To: gcc-bugs
------- Comment #7 from rguenth at gcc dot gnu dot org 2009-04-03 10:26 -------
Subject: Bug 36201
Author: rguenth
Date: Fri Apr 3 10:24:28 2009
New Revision: 145494
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=145494
Log:
2009-04-03 Richard Guenther <rguenther@suse.de>
PR middle-end/13146
PR tree-optimization/23940
PR tree-optimization/33237
PR middle-end/33974
PR middle-end/34093
PR tree-optimization/36201
PR tree-optimization/36230
PR tree-optimization/38049
PR tree-optimization/38207
PR tree-optimization/38230
PR tree-optimization/38301
PR tree-optimization/38585
PR middle-end/38895
PR tree-optimization/38985
PR tree-optimization/39299
* tree-ssa-structalias.h: Remove.
* tree-ssa-operands.h (NULL_USE_OPERAND_P): Make of type use_operand_p.
(NULL_DEF_OPERAND_P): Make of type def_operand_p.
(struct vuse_element_d): Remove.
(struct vuse_vec_d): Likewise.
(VUSE_VECT_NUM_ELEM, VUSE_VECT_ELEMENT_NC, VUSE_ELEMENT_PTR_NC,
VUSE_ELEMENT_VAR_NC, VUSE_VECT_ELEMENT, VUSE_ELEMENT_PTR,
SET_VUSE_VECT_ELEMENT, SET_VUSE_ELEMENT_VAR, SET_VUSE_ELEMENT_PTR,
VUSE_ELEMENT_VAR): Likewise.
(struct voptype_d): Likewise.
(NUM_VOP_FREE_BUCKETS): Likewise.
(struct ssa_operands): Remove vop_free_buckets and mpt_table fields.
(struct stmt_operands_d): Remove.
(VUSE_OP_PTR, VUSE_OP, SET_VUSE_OP, VUSE_NUM, VUSE_VECT,
VDEF_RESULT_PTR, VDEF_RESULT, VDEF_OP_PTR, VDEF_OP, SET_VDEF_OP,
VDEF_NUM, VDEF_VECT): Likewise.
(copy_virtual_operands): Remove.
(operand_build_cmp): Likewise.
(create_ssa_artificial_load_stmt): Likewise.
(enum ssa_op_iter_type): Remove ssa_op_iter_vdef.
(struct ssa_operand_iterator_d): Remove vuses, vdefs, mayusesm
vuse_index and mayuse_index members. Pack and move done and iter_type
members to the front.
(SSA_OP_VMAYUSE): Remove.
(SSA_OP_VIRTUAL_USES): Adjust.
(FOR_EACH_SSA_VDEF_OPERAND): Remove.
(unlink_stmt_vdef): Declare.
(add_to_addressable_set): Remove.
* tree-vrp.c (stmt_interesting_for_vrp): Adjust.
(vrp_visit_stmt): Likewise.
* doc/tree-ssa.texi (Alias analysis): Update.
* doc/invoke.texi (max-aliased-vops): Remove docs.
(avg-aliased-vops): Likewise.
* tree-into-ssa.c (syms_to_rename): Remove.
(need_to_update_vops_p): Likewise.
(need_to_initialize_update_ssa_p): Rename to ...
(update_ssa_initialized_fn): ... this. Track function we are
initialized for.
(symbol_marked_for_renaming): Simplify.
(add_new_name_mapping): Do not set need_to_update_vops_p.
(dump_currdefs): Use SYMS_TO_RENAME.
(rewrite_update_stmt): Always walk all uses/defs.
(dump_update_ssa): Adjust.
(init_update_ssa): Take function argument. Track what we are
initialized for.
(delete_update_ssa): Reset SYMS_TO_RENAME and
update_ssa_initialized_fn.
(create_new_def_for): Initialize for cfun, assert we are initialized
for cfun.
(mark_sym_for_renaming): Simplify.
(mark_set_for_renaming): Do not initialize update-ssa.
(need_ssa_update_p): Simplify. Take function argument.
(name_mappings_registered_p): Assert we ask for the correct function.
(name_registered_for_update_p): Likewise.
(ssa_names_to_replace): Likewise.
(release_ssa_name_after_update_ssa): Likewise.
(update_ssa): Likewise. Use SYMS_TO_RENAME.
(dump_decl_set): Do not print a newline.
(debug_decl_set): Do it here.
(dump_update_ssa): And here.
* tree-ssa-loop-im.c (move_computations): Adjust.
(movement_possibility): Likewise.
(determine_max_movement): Likewise.
(gather_mem_refs_stmt): Likewise.
* tree-dump.c (dequeue_and_dump): Do not handle SYMBOL_MEMORY_TAG
or NAME_MEMORY_TAG.
* tree-complex.c (update_all_vops): Remove.
(expand_complex_move): Adjust.
* tree-ssa-loop-niter.c (chain_of_csts_start): Use NULL_TREE.
Simplify test for memory referencing statement. Exclude
non-invariant ADDR_EXPRs.
* tree-pretty-print.c (dump_generic_node): Do not handle memory tags.
* tree-loop-distribution.c (generate_memset_zero): Adjust.
(rdg_flag_uses): Likewise.
* tree-tailcall.c (suitable_for_tail_opt_p): Remove memory-tag
related code.
(tree_optimize_tail_calls_1): Also split the
edge from the entry block if we have degenerate PHI nodes in
the first basic block.
* tree.c (init_ttree): Remove memory-tag related code.
(tree_code_size): Likewise.
(tree_node_structure): Likewise.
(build7_stat): Re-write to be build6_stat.
* tree.h (MTAG_P, TREE_MEMORY_TAG_CHECK, TMR_TAG): Remove.
(SSA_VAR_P): Adjust.
(struct tree_memory_tag): Remove.
(struct tree_memory_partition_tag): Likewise.
(union tree_node): Adjust.
(build7): Re-write to be build6.
* tree-pass.h (pass_reset_cc_flags): Remove.
(TODO_update_address_taken): New flag.
(pass_simple_dse): Remove.
* ipa-cp.c (ipcp_update_callgraph): Update SSA form.
* params.h (MAX_ALIASED_VOPS): Remove.
(AVG_ALIASED_VOPS): Likewise.
* omp-low.c (expand_omp_taskreg): Update SSA form.
* tree-ssa-dse.c (dse_optimize_stmt): Properly query if the rhs
aliases the lhs in a copy stmt.
* tree-ssa-dse.c (struct address_walk_data): Remove.
(memory_ssa_name_same): Likewise.
(memory_address_same): Likewise.
(get_kill_of_stmt_lhs): Likewise.
(dse_possible_dead_store_p): Simplify, use the oracle. Handle
unused stores. Look through PHI nodes into post-dominated regions.
(dse_optimize_stmt): Simplify. Properly remove stores.
(tree_ssa_dse): Compute dominators.
(execute_simple_dse): Remove.
(pass_simple_dse): Likewise.
* ipa-reference.c (scan_stmt_for_static_refs): Open-code
gimple_loaded_syms and gimple_stored_syms computation.
* toplev.c (dump_memory_report): Dump alias and pta stats.
* tree-ssa-sccvn.c (vn_reference_compute_hash): Simplify.
(vn_reference_eq): Likewise.
(vuses_to_vec, copy_vuses_from_stmt, vdefs_to_vec,
copy_vdefs_from_stmt, shared_lookup_vops, shared_vuses_from_stmt,
valueize_vuses): Remove.
(get_def_ref_stmt_vuses): Simplify. Rename to ...
(get_def_ref_stmt_vuse): ... this.
(vn_reference_lookup_2): New function.
(vn_reference_lookup_pieces): Use walk_non_aliased_vuses for
walking equivalent vuses. Simplify.
(vn_reference_lookup): Likewise.
(vn_reference_insert): Likewise.
(vn_reference_insert_pieces): Likewise.
(visit_reference_op_call): Simplify.
(visit_reference_op_load): Likewise.
(visit_reference_op_store): Likewise.
(init_scc_vn): Remove shared_lookup_vuses initialization.
(free_scc_vn): Remove shared_lookup_vuses freeing.
(sort_vuses, sort_vuses_heap): Remove.
(get_ref_from_reference_ops): Export.
* tree-ssa-sccvn.h (struct vn_reference_s): Replace vuses
vector with single vuse pointer.
(vn_reference_lookup_pieces, vn_reference_lookup,
vn_reference_insert, vn_reference_insert_pieces): Adjust prototypes.
(shared_vuses_from_stmt): Remove.
(get_ref_from_reference_ops): Declare.
* tree-ssa-loop-manip.c (slpeel_can_duplicate_loop_p): Adjust.
* tree-ssa-copyrename.c (copy_rename_partition_coalesce): Remove
memory-tag related code.
* tree-ssa-ccp.c (get_symbol_constant_value): Remove memory-tag code.
(likely_value): Add comment, skip static-chain of call statements.
(surely_varying_stmt_p): Adjust.
(gimplify_and_update_call_from_tree): Likewise.
(execute_fold_all_builtins): Do not rebuild alias info.
(gimplify_and_update_call_from_tree): Properly update VOPs.
* tree-ssa-loop-ivopts.c (get_ref_tag): Remove.
(copy_ref_info): Remove memory-tag related code.
* tree-call-cdce.c (tree_call_cdce): Rename the VOP.
* ipa-pure-const.c (check_decl): Remove memory-tag related code.
(check_stmt): Open-code gimple_loaded_syms and gimple_stored_syms
computation.
* tree-ssa-dom.c (gimple_p): Remove typedef.
(eliminate_redundant_computations): Adjust.
(record_equivalences_from_stmt): Likewise.
(avail_expr_hash): Likewise.
(avail_expr_eq): Likewise.
* tree-ssa-propagate.c (update_call_from_tree): Properly
update VOPs.
(stmt_makes_single_load): Likewise.
(stmt_makes_single_store): Likewise.
* tree-ssa-alias.c: Rewrite completely.
(debug_memory_partitions, dump_mem_ref_stats, debug_mem_ref_stats,
debug_mem_sym_stats, dump_mem_sym_stats_for_var,
debug_all_mem_sym_stats, debug_mp_info, update_mem_sym_stats_from_stmt,
delete_mem_ref_stats, create_tag_raw, dump_points_to_info,
dump_may_aliases_for, debug_may_aliases_for, new_type_alias):
Remove public functions.
(pass_reset_cc_flags): Remove.
(pass_build_alias): Move ...
* tree-ssa-structalias.c (pass_build_alias): ... here.
* tree-ssa-alias.c (may_be_aliased): Move ...
* tree-flow-inline.h (may_be_aliased): ... here.
tree-ssa-alias.c (struct count_ptr_d, count_ptr_derefs,
count_uses_and_derefs): Move ...
* gimple.c: ... here.
* gimple.h (count_uses_and_derefs): Declare.
* tree-ssa-alias.c (dump_alias_stats, ptr_deref_may_alias_global_p,
ptr_deref_may_alias_decl_p, ptr_derefs_may_alias_p,
same_type_for_tbaa, nonaliasing_component_refs_p,
decl_refs_may_alias_p,
indirect_ref_may_alias_decl_p, indirect_refs_may_alias_p,
ref_maybe_used_by_call_p, ref_maybe_used_by_stmt_p,
call_may_clobber_ref_p, stmt_may_clobber_ref_p, maybe_skip_until,
get_continuation_for_phi, walk_non_aliased_vuses, walk_aliased_vdefs):
New functions.
* tree-dfa.c (refs_may_alias_p): Move ...
* tree-ssa-alias.c (refs_may_alias_p): ... here. Extend.
* tree-ssa-alias.h: New file.
* tree-ssa-sink.c (is_hidden_global_store): Adjust.
(statement_sink_location): Likewise.
* opts.c (decode_options): Do not adjust max-aliased-vops or
avg-aliased-vops values.
* timevar.def (TV_TREE_MAY_ALIAS): Remove.
(TV_CALL_CLOBBER): Likewise.
(TV_FLOW_SENSITIVE): Likewise.
(TV_FLOW_INSENSITIVE): Likewise.
(TV_MEMORY_PARTITIONING): Likewise.
(TV_ALIAS_STMT_WALK): New timevar.
* tree-ssa-loop-ivcanon.c (empty_loop_p): Adjust.
* tree-ssa-address.c (create_mem_ref_raw): Use build6.
(get_address_description): Remove memory-tag related code.
* tree-ssa-ifcombine.c (bb_no_side_effects_p): Adjust.
* treestruct.def (TS_MEMORY_TAG, TS_MEMORY_PARTITION_TAG): Remove.
* tree-eh.c (cleanup_empty_eh): Do not leave stale SSA_NAMEs
and immediate uses in statements. Document.
* gimple-pretty-print.c (dump_gimple_mem_ops): Adjust.
(dump_symbols): Remove.
(dump_gimple_mem_ops): Do not dump loaded or stored syms.
* alias.c (get_deref_alias_set): New function split out from ...
(get_alias_set): ... here.
* alias.h (get_deref_alias_set): Declare.
* tree-vect-data-refs.c (vect_create_data_ref_ptr): Remove unused
type parameter. Remove restrict pointer handling. Create a
ref-all pointer in case type-based alias sets do not conflict.
(vect_analyze_data_refs): Remove SMT related code.
* tree-vect-stmts.c (vectorizable_store): Re-instantiate TBAA assert.
(vectorizable_load): Likewise.
* tree-data-ref.h (struct dr_alias): Remove symbol_tag field.
(DR_SYMBOL_TAG, DR_VOPS): Remove.
* tree-data-ref.c (dr_may_alias_p): Use the alias-oracle.
Ignore vops and SMTs.
(dr_analyze_alias): Likewise..
(free_data_ref): Likewise.
(create_data_ref): Likewise.
(analyze_all_data_dependences): Likewise.
(get_references_in_stmt): Adjust.
* tree-flow-inline.h (gimple_aliases_computed_p,
gimple_addressable_vars, gimple_call_clobbered_vars,
gimple_call_used_vars, gimple_global_var, may_aliases,
memory_partition,
factoring_name_p, mark_call_clobbered, clear_call_clobbered,
compare_ssa_operands_equal, symbol_mem_tag, set_symbol_mem_tag,
gimple_mem_ref_stats): Remove.
(gimple_vop): New function.
(op_iter_next_use): Remove vuses and mayuses cases.
(op_iter_next_def): Remove vdefs case.
(op_iter_next_tree): Remove vuses, mayuses and vdefs cases.
(clear_and_done_ssa_iter): Do not set removed fields.
(op_iter_init): Likewise. Skip vuse and/or vdef if requested.
Assert we are not iterating over vuses or vdefs if not also
iterating over uses or defs.
(op_iter_init_use): Likewise.
(op_iter_init_def): Likewise.
(op_iter_next_vdef): Remove.
(op_iter_next_mustdef): Likewise.
(op_iter_init_vdef): Likewise.
(compare_ssa_operands_equal): Likewise.
(link_use_stmts_after): Handle vuse operand.
(is_call_used): Use is_call_clobbered.
(is_call_clobbered): Global variables are always call clobbered,
query the call-clobbers bitmap.
(mark_call_clobbered): Ignore global variables.
(clear_call_clobbered): Likewise.
* tree-ssa-coalesce.c (create_outofssa_var_map): Adjust
virtual operands sanity check.
* tree.def (NAME_MEMORY_TAG, SYMBOL_MEMORY_TAG, MEMORY_PARTITION_TAG):
Remove.
(TARGET_MEM_REF): Remove TMR_TAG operand.
* tree-dfa.c (add_referenced_var): Initialize call-clobber state.
Remove call-clobber related code.
(remove_referenced_var): Likewise. Do not clear mpt or symbol_mem_tag.
(dump_variable): Do not dump SMTs, memory stats, may-aliases or
partitions or escape reason.
(get_single_def_stmt, get_single_def_stmt_from_phi,
get_single_def_stmt_with_phi): Remove.
(dump_referenced_vars): Tidy.
(get_ref_base_and_extent): Allow bare decls.
(collect_dfa_stats): Adjust.
* graphite.c (rename_variables_in_stmt): Adjust.
(graphite_copy_stmts_from_block): Likewise.
(translate_clast): Likewise.
* tree-ssa-pre.c (struct bb_bitmap_sets): Add expr_dies bitmap.
(EXPR_DIES): New.
(translate_vuse_through_block): Use the oracle.
(phi_translate_1): Adjust.
(value_dies_in_block_x): Use the oracle. Cache the outcome
in EXPR_DIES.
(valid_in_sets): Check if the VUSE for
a REFERENCE is available.
(eliminate): Do not remove stmts during elimination,
instead queue and remove them afterwards.
(do_pre): Do not rebuild alias info.
(pass_pre): Run TODO_rebuild_alias before PRE.
* tree-ssa-live.c (remove_unused_locals): Remove memory-tag code.
* tree-sra.c (sra_walk_function): Use gimple_references_memory_p.
(mark_all_v_defs_stmt): Remove.
(mark_all_v_defs_seq): Adjust.
(sra_replace): Likewise.
(scalarize_use): Likewise.
(scalarize_copy): Likewise.
(scalarize_init): Likewise.
(scalarize_ldst): Likewise.
(todoflags): Remove.
(tree_sra): Do not rebuild alias info.
(tree_sra_early): Adjust.
(pass_sra): Run TODO_update_address_taken before SRA.
* tree-predcom.c (set_alias_info): Remove.
(prepare_initializers_chain): Do not call it.
(mark_virtual_ops_for_renaming): Adjust.
(mark_virtual_ops_for_renaming_list): Remove.
(initialize_root_vars): Adjust.
(initialize_root_vars_lm): Likewise.
(prepare_initializers_chain): Likewise.
* tree-ssa-copy.c (may_propagate_copy): Remove memory-tag related code.
(may_propagate_copy_into_stmt): Likewise.
(merge_alias_info): Do nothing for now.
(propagate_tree_value_into_stmt): Adjust.
(stmt_may_generate_copy): Likewise.
* tree-ssa-forwprop.c (tidy_after_forward_propagate_addr): Do
not mark symbols for renaming.
(forward_propagate_addr_expr): Match up push/pop_stmt_changes
with the same statement, make sure to update the new pointed-to one.
* tree-ssa-dce.c (eliminate_unnecessary_stmts): Do not copy
call statements, do not mark symbols for renaming.
(mark_operand_necessary): Dump something.
(ref_may_be_aliased): New function.
(mark_aliased_reaching_defs_necessary_1): New helper function.
(mark_aliased_reaching_defs_necessary): Likewise.
(mark_all_reaching_defs_necessary_1): Likewise.
(mark_all_reaching_defs_necessary): Likewise.
(propagate_necessity): Do not process virtual PHIs. For
non-aliased loads mark all reaching definitions as necessary.
For aliased loads and stores mark the immediate dominating
aliased clobbers as necessary.
(visited): New global static.
(perform_tree_ssa_dce): Free visited bitmap after propagating
necessity.
(remove_dead_phis): Perform simple dead virtual PHI removal.
(remove_dead_stmt): Properly unlink virtual operands when
removing stores.
(eliminate_unnecessary_stmts): Schedule PHI removal after
stmt removal.
* tree-ssa-ter.c (is_replaceable_p): Adjust.
(process_replaceable): Likewise.
(find_replaceable_in_bb): Likewise.
* tree-ssa.c (verify_ssa_name): Verify all VOPs are
based on the single gimple vop.
(verify_flow_insensitive_alias_info): Remove.
(verify_flow_sensitive_alias_info): Likewise.
(verify_call_clobbering): Likewise.
(verify_memory_partitions): Likewise.
(verify_alias_info): Likewise.
(verify_ssa): Adjust..
(execute_update_addresses_taken): Export. Update SSA
manually. Optimize only when optimizing. Use a local bitmap.
(pass_update_address_taken): Remove TODO_update_ssa, add
TODO_dump_func.
(pass_update_address_taken): Just use TODO_update_address_taken.
(init_tree_ssa): Do not initialize addressable_vars.
(verify_ssa): Verify new VUSE / VDEF properties.
Verify that all stmts definitions have the stmt as SSA_NAME_DEF_STMT.
Do not call verify_alias_info.
(delete_tree_ssa): Clear the VUSE, VDEF operands.
Do not free the loaded and stored syms bitmaps. Reset the escaped
and callused solutions. Do not free addressable_vars.
Remove memory-tag related code.
(warn_uninitialized_var): Aliases are always available.
* tree-ssa-loop-prefetch.c (gather_memory_references): Adjust.
* lambda-code.c (can_put_in_inner_loop): Adjust.
(can_put_after_inner_loop): Likewise.
(perfect_nestify): Likewise.
* tree-vect-stmts.c (vect_stmt_relevant_p): Adjust.
(vect_gen_widened_results_half): Remove CALL_EXPR handling.
(vectorizable_conversion): Do not mark symbols for renaming.
* tree-inline.c (remap_gimple_stmt): Clear VUSE/VDEF.
(expand_call_inline): Unlink the calls virtual operands before
replacing it.
(tree_function_versioning): Do not call update_ssa if we are not
updating clones. Simplify.
* tree-ssa-phiprop.c (phivn_valid_p): Adjust.
(propagate_with_phi): Likewise..
* tree-outof-ssa.c (create_temp): Remove memory tag and call
clobber code. Assert we are not aliased or global.
* tree-flow.h: Include tree-ssa-alias.h
(enum escape_type): Remove.
(struct mem_sym_stats_d): Likewise.
(struct mem_ref_stats_d): Likewise.
(struct gimple_df): Add vop member. Remove global_var,
call_clobbered_vars, call_used_vars, addressable_vars,
aliases_compted_p and mem_ref_stats members. Add syms_to_rename,
escaped and callused members.
(struct ptr_info_def): Remove all members, add points-to solution
member pt.
(struct var_ann_d): Remove in_vuse_list, in_vdef_list,
call_clobbered, escape_mask, mpt and symbol_mem_tag members.
* Makefile.in (TREE_FLOW_H): Add tree-ssa-alias.h.
(tree-ssa-structalias.o): Remove tree-ssa-structalias.h.
(tree-ssa-alias.o): Likewise.
(toplev.o): Add tree-ssa-alias.h
(GTFILES): Remove tree-ssa-structalias.h, add tree-ssa-alias.h.
* gimple.c (gimple_set_bb): Fix off-by-one error.
(is_gimple_reg): Do not handle memory tags.
(gimple_copy): Also copy virtual operands.
Delay updating the statement. Do not reset loaded and stored syms.
(gimple_set_stored_syms): Remove.
(gimple_set_loaded_syms): Likewise.
(gimple_call_copy_skip_args): Copy the virtual operands
and mark the new statement modified.
* tree-ssa-structalias.c (may_alias_p): Remove.
(set_uids_in_ptset): Take the alias set to prune with as
parameter. Fold in the alias test of may_alias_p.
(compute_points_to_sets): Compute whether a ptr is dereferenced
in a local sbitmap.
(process_constraint): Deal with &ANYTHING on the lhs, reject all
other ADDRESSOF constraints on the lhs.
(get_constraint_for_component_ref): Assert that we don't get
ADDRESSOF constraints from the base of the reference.
Properly generate UNKNOWN_OFFSET for DEREF if needed.
(struct variable_info): Remove collapsed_to member.
(get_varinfo_fc): Remove.
(new_var_info): Do not set collapsed_to.
(dump_constraint): Do not follow cycles.
(dump_constraint_graph): Likewise.
(build_pred_graph): Likewise.
(build_succ_graph): Likewise.
(rewrite_constraints): Likewise.
(do_simple_structure_copy): Remove.
(do_rhs_deref_structure_copy): Remove.
(do_lhs_deref_structure_copy): Remove.
(collapse_rest_of_var): Remove.
(do_structure_copy): Re-implement.
(pta_stats): New global variable.
(dump_pta_stats): New function.
(struct constraint_expr): Make offset signed.
(UNKNOWN_OFFSET): Define special value.
(dump_constraint): Dump UNKNOWN_OFFSET as UNKNOWN.
(solution_set_expand): New helper function split out from ...
(do_sd_constraint): ... here.
(solution_set_add): Handle UNKNOWN_OFFSET. Handle negative offsets.
(do_ds_constraint): Likewise.
(do_sd_constraint): Likewise. Do not special-case ESCAPED = *ESCAPED
and CALLUSED = *CALLUSED.
(set_union_with_increment): Make inc argument signed.
(type_safe): Remove.
(get_constraint_for_ptr_offset): Handle unknown and negative
constant offsets.
(first_vi_for_offset): Handle offsets before start. Bail
out early for offsets beyond the variable extent.
(first_or_preceding_vi_for_offset): New function.
(init_base_vars): Add ESCAPED = ESCAPED + UNKNOWN_OFFSET constraint.
Together with ESCAPED = *ESCAPED this properly computes reachability.
(find_what_var_points_to): New function.
(find_what_p_points_to): Implement in terms of find_what_var_points_to.
(pt_solution_reset, pt_solution_empty_p, pt_solution_includes_global,
pt_solution_includes_1, pt_solution_includes, pt_solutions_intersect_1,
pt_solutions_intersect): New functions.
(compute_call_used_vars): Remove.
(compute_may_aliases): New main entry into PTA computation.
* gimple.h (gimple_p): New typedef.
(struct gimple_statement_base): Remove references_memory_p.
(struct gimple_statement_with_memory_ops_base): Remove
vdef_ops, vuse_ops, stores and loads members. Add vdef and vuse
members.
(gimple_vuse_ops, gimple_set_vuse_ops, gimple_vdef_ops,
gimple_set_vdef_ops, gimple_loaded_syms, gimple_stored_syms,
gimple_set_references_memory): Remove.
(gimple_vuse_op, gimple_vdef_op, gimple_vuse, gimple_vdef,
gimple_vuse_ptr, gimple_vdef_ptri, gimple_set_vuse, gimple_set_vdef):
New functions.
* tree-cfg.c (move_block_to_fn): Fix off-by-one error.
(verify_expr): Allow RESULT_DECL.
(gimple_duplicate_bb): Do not copy virtual operands.
(gimple_duplicate_sese_region): Adjust.
(gimple_duplicate_sese_tail): Likewise.
(mark_virtual_ops_in_region): Remove.
(move_sese_region_to_fn): Do not call it.
* passes.c (init_optimization_passes): Remove pass_reset_cc_flags
and pass_simple_dse.
(execute_function_todo): Handle TODO_update_address_taken,
call execute_update_addresses_taken for TODO_rebuild_alias.
(execute_todo): Adjust.
(execute_one_pass): Init dump files early.
* ipa-struct-reorg.c (finalize_var_creation): Do not mark vars
call-clobbered.
(create_general_new_stmt): Clear vops.
* tree-ssa-reassoc.c (get_rank): Adjust.
* tree-vect-slp.c (vect_create_mask_and_perm): Do not mark
symbols for renaming.
* params.def (PARAM_MAX_ALIASED_VOPS): Remove.
(PARAM_AVG_ALIASED_VOPS): Likewise.
* tree-ssanames.c (init_ssanames): Allocate SYMS_TO_RENAME.
(duplicate_ssa_name_ptr_info): No need to copy the shared bitmaps.
* tree-ssa-operands.c: Simplify for new virtual operand
representation.
(operand_build_cmp, copy_virtual_operands,
create_ssa_artificial_load_stmt, add_to_addressable_set,
gimple_add_to_addresses_taken): Remove public functions.
(unlink_stmt_vdef): New function.
* gcc.dg/pr19633-1.c: Adjust.
* gcc.dg/torture/pta-callused-1.c: Likewise.
* gcc.dg/torture/pr39074-2.c: Likewise.
* gcc.dg/torture/pr39074.c: Likewise.
* gcc.dg/torture/pta-ptrarith-3.c: New testcase.
* gcc.dg/torture/pr30375.c: Adjust.
* gcc.dg/torture/pr33563.c: Likewise.
* gcc.dg/torture/pr33870.c: Likewise.
* gcc.dg/torture/pr33560.c: Likewise.
* gcc.dg/torture/pta-structcopy-1.c: New testcase.
* gcc.dg/torture/ssa-pta-fn-1.c: Likewise.
* gcc.dg/tree-ssa/alias-15.c: Remove.
* gcc.dg/tree-ssa/ssa-dce-4.c: New testcase.
* gcc.dg/tree-ssa/pr26421.c: Adjust.
* gcc.dg/tree-ssa/ssa-fre-10.c: XFAIL.
* gcc.dg/tree-ssa/ssa-dce-5.c: New testcase.
* gcc.dg/tree-ssa/pr23382.c: Adjust.
* gcc.dg/tree-ssa/ssa-fre-20.c: New testcase.
* gcc.dg/tree-ssa/alias-16.c: Adjust.
* gcc.dg/tree-ssa/ssa-fre-13.c: Likewise.
* gcc.dg/tree-ssa/ssa-fre-14.c: Likewise.
* gcc.dg/tree-ssa/alias-18.c: Likewise.
* gcc.dg/tree-ssa/ssa-fre-15.c: Likewise.
* gcc.dg/tree-ssa/ssa-lim-3.c: Likewise.
* gcc.dg/tree-ssa/alias-19.c: Likewise.
* gcc.dg/tree-ssa/pta-ptrarith-1.c: New testcase.
* gcc.dg/tree-ssa/pr13146.c: Likewise.
* gcc.dg/tree-ssa/ssa-pre-23.c: Likewise.
* gcc.dg/tree-ssa/pta-ptrarith-2.c: Likewise.
* gcc.dg/tree-ssa/ssa-fre-18.c: Likewise.
* gcc.dg/tree-ssa/ssa-pre-24.c: New XFAILed testcase.
* gcc.dg/tree-ssa/ssa-fre-19.c: New testcase.
* gcc.dg/tree-ssa/alias-20.c: Likewise.
* gcc.dg/tree-ssa/ssa-dse-12.c: Likewise.
* gcc.dg/tree-ssa/pr38895.c: Likewise.
* gcc.dg/uninit-B.c: XFAIL.
* gcc.dg/vect/no-vfa-vect-43.c: Adjust.
* gcc.dg/uninit-pr19430.c: XFAIL.
* g++.dg/tree-ssa/pr13146.C: New testcase.
* g++.dg/opt/pr36187.C: Adjust.
* g++.dg/torture/20090329-1.C: New testcase.
Added:
trunk/gcc/testsuite/g++.dg/torture/20090329-1.C
- copied unchanged from r145492,
branches/alias-improvements/gcc/testsuite/g++.dg/torture/20090329-1.C
trunk/gcc/testsuite/g++.dg/tree-ssa/pr13146.C
- copied unchanged from r145492,
branches/alias-improvements/gcc/testsuite/g++.dg/tree-ssa/pr13146.C
trunk/gcc/testsuite/gcc.dg/torture/pta-ptrarith-3.c
- copied unchanged from r145492,
branches/alias-improvements/gcc/testsuite/gcc.dg/torture/pta-ptrarith-3.c
trunk/gcc/testsuite/gcc.dg/torture/pta-structcopy-1.c
- copied unchanged from r145492,
branches/alias-improvements/gcc/testsuite/gcc.dg/torture/pta-structcopy-1.c
trunk/gcc/testsuite/gcc.dg/torture/ssa-pta-fn-1.c
- copied unchanged from r145492,
branches/alias-improvements/gcc/testsuite/gcc.dg/torture/ssa-pta-fn-1.c
trunk/gcc/testsuite/gcc.dg/tree-ssa/alias-20.c
- copied unchanged from r145492,
branches/alias-improvements/gcc/testsuite/gcc.dg/tree-ssa/alias-20.c
trunk/gcc/testsuite/gcc.dg/tree-ssa/pr13146.c
- copied unchanged from r145492,
branches/alias-improvements/gcc/testsuite/gcc.dg/tree-ssa/pr13146.c
trunk/gcc/testsuite/gcc.dg/tree-ssa/pr38895.c
- copied unchanged from r145492,
branches/alias-improvements/gcc/testsuite/gcc.dg/tree-ssa/pr38895.c
trunk/gcc/testsuite/gcc.dg/tree-ssa/pta-ptrarith-1.c
- copied unchanged from r145492,
branches/alias-improvements/gcc/testsuite/gcc.dg/tree-ssa/pta-ptrarith-1.c
trunk/gcc/testsuite/gcc.dg/tree-ssa/pta-ptrarith-2.c
- copied unchanged from r145492,
branches/alias-improvements/gcc/testsuite/gcc.dg/tree-ssa/pta-ptrarith-2.c
trunk/gcc/testsuite/gcc.dg/tree-ssa/ssa-dce-4.c
- copied unchanged from r145492,
branches/alias-improvements/gcc/testsuite/gcc.dg/tree-ssa/ssa-dce-4.c
trunk/gcc/testsuite/gcc.dg/tree-ssa/ssa-dce-5.c
- copied unchanged from r145492,
branches/alias-improvements/gcc/testsuite/gcc.dg/tree-ssa/ssa-dce-5.c
trunk/gcc/testsuite/gcc.dg/tree-ssa/ssa-dse-12.c
- copied unchanged from r145492,
branches/alias-improvements/gcc/testsuite/gcc.dg/tree-ssa/ssa-dse-12.c
trunk/gcc/testsuite/gcc.dg/tree-ssa/ssa-fre-18.c
- copied unchanged from r145492,
branches/alias-improvements/gcc/testsuite/gcc.dg/tree-ssa/ssa-fre-18.c
trunk/gcc/testsuite/gcc.dg/tree-ssa/ssa-fre-19.c
- copied unchanged from r145492,
branches/alias-improvements/gcc/testsuite/gcc.dg/tree-ssa/ssa-fre-19.c
trunk/gcc/testsuite/gcc.dg/tree-ssa/ssa-fre-20.c
- copied unchanged from r145492,
branches/alias-improvements/gcc/testsuite/gcc.dg/tree-ssa/ssa-fre-20.c
trunk/gcc/testsuite/gcc.dg/tree-ssa/ssa-pre-23.c
- copied unchanged from r145492,
branches/alias-improvements/gcc/testsuite/gcc.dg/tree-ssa/ssa-pre-23.c
trunk/gcc/testsuite/gcc.dg/tree-ssa/ssa-pre-24.c
- copied unchanged from r145492,
branches/alias-improvements/gcc/testsuite/gcc.dg/tree-ssa/ssa-pre-24.c
trunk/gcc/tree-ssa-alias.h
- copied unchanged from r145492,
branches/alias-improvements/gcc/tree-ssa-alias.h
Removed:
trunk/gcc/testsuite/gcc.dg/tree-ssa/alias-15.c
trunk/gcc/tree-ssa-structalias.h
Modified:
trunk/gcc/ChangeLog
trunk/gcc/Makefile.in
trunk/gcc/alias.c
trunk/gcc/alias.h
trunk/gcc/doc/invoke.texi
trunk/gcc/doc/tree-ssa.texi
trunk/gcc/gimple-pretty-print.c
trunk/gcc/gimple.c
trunk/gcc/gimple.h
trunk/gcc/graphite.c
trunk/gcc/ipa-cp.c
trunk/gcc/ipa-pure-const.c
trunk/gcc/ipa-reference.c
trunk/gcc/ipa-struct-reorg.c
trunk/gcc/lambda-code.c
trunk/gcc/omp-low.c
trunk/gcc/opts.c
trunk/gcc/params.def
trunk/gcc/params.h
trunk/gcc/passes.c
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/g++.dg/opt/pr36187.C
trunk/gcc/testsuite/gcc.dg/pr19633-1.c
trunk/gcc/testsuite/gcc.dg/torture/pr30375.c
trunk/gcc/testsuite/gcc.dg/torture/pr33560.c
trunk/gcc/testsuite/gcc.dg/torture/pr33563.c
trunk/gcc/testsuite/gcc.dg/torture/pr33870.c
trunk/gcc/testsuite/gcc.dg/torture/pr39074-2.c
trunk/gcc/testsuite/gcc.dg/torture/pr39074.c
trunk/gcc/testsuite/gcc.dg/torture/pta-callused-1.c
trunk/gcc/testsuite/gcc.dg/tree-ssa/alias-16.c
trunk/gcc/testsuite/gcc.dg/tree-ssa/alias-18.c
trunk/gcc/testsuite/gcc.dg/tree-ssa/alias-19.c
trunk/gcc/testsuite/gcc.dg/tree-ssa/pr23382.c
trunk/gcc/testsuite/gcc.dg/tree-ssa/pr26421.c
trunk/gcc/testsuite/gcc.dg/tree-ssa/ssa-fre-10.c
trunk/gcc/testsuite/gcc.dg/tree-ssa/ssa-fre-13.c
trunk/gcc/testsuite/gcc.dg/tree-ssa/ssa-fre-14.c
trunk/gcc/testsuite/gcc.dg/tree-ssa/ssa-fre-15.c
trunk/gcc/testsuite/gcc.dg/tree-ssa/ssa-lim-3.c
trunk/gcc/testsuite/gcc.dg/uninit-B.c
trunk/gcc/testsuite/gcc.dg/uninit-pr19430.c
trunk/gcc/testsuite/gcc.dg/vect/no-vfa-vect-43.c
trunk/gcc/timevar.def
trunk/gcc/toplev.c
trunk/gcc/tree-call-cdce.c
trunk/gcc/tree-cfg.c
trunk/gcc/tree-complex.c
trunk/gcc/tree-data-ref.c
trunk/gcc/tree-data-ref.h
trunk/gcc/tree-dfa.c
trunk/gcc/tree-dump.c
trunk/gcc/tree-eh.c
trunk/gcc/tree-flow-inline.h
trunk/gcc/tree-flow.h
trunk/gcc/tree-inline.c
trunk/gcc/tree-into-ssa.c
trunk/gcc/tree-loop-distribution.c
trunk/gcc/tree-outof-ssa.c
trunk/gcc/tree-pass.h
trunk/gcc/tree-predcom.c
trunk/gcc/tree-pretty-print.c
trunk/gcc/tree-sra.c
trunk/gcc/tree-ssa-address.c
trunk/gcc/tree-ssa-alias.c
trunk/gcc/tree-ssa-ccp.c
trunk/gcc/tree-ssa-coalesce.c
trunk/gcc/tree-ssa-copy.c
trunk/gcc/tree-ssa-copyrename.c
trunk/gcc/tree-ssa-dce.c
trunk/gcc/tree-ssa-dom.c
trunk/gcc/tree-ssa-dse.c
trunk/gcc/tree-ssa-forwprop.c
trunk/gcc/tree-ssa-ifcombine.c
trunk/gcc/tree-ssa-live.c
trunk/gcc/tree-ssa-loop-im.c
trunk/gcc/tree-ssa-loop-ivcanon.c
trunk/gcc/tree-ssa-loop-ivopts.c
trunk/gcc/tree-ssa-loop-niter.c
trunk/gcc/tree-ssa-loop-prefetch.c
trunk/gcc/tree-ssa-operands.c
trunk/gcc/tree-ssa-operands.h
trunk/gcc/tree-ssa-phiprop.c
trunk/gcc/tree-ssa-pre.c
trunk/gcc/tree-ssa-propagate.c
trunk/gcc/tree-ssa-reassoc.c
trunk/gcc/tree-ssa-sccvn.c
trunk/gcc/tree-ssa-sccvn.h
trunk/gcc/tree-ssa-sink.c
trunk/gcc/tree-ssa-structalias.c
trunk/gcc/tree-ssa-ter.c
trunk/gcc/tree-ssa.c
trunk/gcc/tree-ssanames.c
trunk/gcc/tree-tailcall.c
trunk/gcc/tree-vect-data-refs.c
trunk/gcc/tree-vect-loop-manip.c
trunk/gcc/tree-vect-slp.c
trunk/gcc/tree-vect-stmts.c
trunk/gcc/tree-vectorizer.h
trunk/gcc/tree-vrp.c
trunk/gcc/tree.c
trunk/gcc/tree.def
trunk/gcc/tree.h
trunk/gcc/treestruct.def
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36201
^ permalink raw reply [flat|nested] 14+ messages in thread
* [Bug middle-end/36201] [4.4 Regression] NVR in the front-end causes missed optimization later on (<retval> thought to alias arguments)
2008-05-10 19:36 [Bug middle-end/36201] New: NVR in the front-end causes missed optimization later on (<retval> thought to alias arguments) pinskia at gcc dot gnu dot org
` (6 preceding siblings ...)
2009-04-03 10:28 ` [Bug middle-end/36201] [4.4/4.5 " rguenth at gcc dot gnu dot org
@ 2009-04-03 10:33 ` rguenth at gcc dot gnu dot org
2009-04-21 16:01 ` jakub at gcc dot gnu dot org
` (4 subsequent siblings)
12 siblings, 0 replies; 14+ messages in thread
From: rguenth at gcc dot gnu dot org @ 2009-04-03 10:33 UTC (permalink / raw)
To: gcc-bugs
------- Comment #8 from rguenth at gcc dot gnu dot org 2009-04-03 10:32 -------
Fixed for 4.5.0.
--
rguenth at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
AssignedTo|rguenth at gcc dot gnu dot |unassigned at gcc dot gnu
|org |dot org
Status|ASSIGNED |NEW
Known to work|4.3.0 4.1.2 |4.3.0 4.1.2 4.5.0
Summary|[4.4/4.5 Regression] NVR in |[4.4 Regression] NVR in the
|the front-end causes missed |front-end causes missed
|optimization later on |optimization later on
|(<retval> thought to alias |(<retval> thought to alias
|arguments) |arguments)
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36201
^ permalink raw reply [flat|nested] 14+ messages in thread
* [Bug middle-end/36201] [4.4 Regression] NVR in the front-end causes missed optimization later on (<retval> thought to alias arguments)
2008-05-10 19:36 [Bug middle-end/36201] New: NVR in the front-end causes missed optimization later on (<retval> thought to alias arguments) pinskia at gcc dot gnu dot org
` (7 preceding siblings ...)
2009-04-03 10:33 ` [Bug middle-end/36201] [4.4 " rguenth at gcc dot gnu dot org
@ 2009-04-21 16:01 ` jakub at gcc dot gnu dot org
2009-07-22 10:35 ` jakub at gcc dot gnu dot org
` (3 subsequent siblings)
12 siblings, 0 replies; 14+ messages in thread
From: jakub at gcc dot gnu dot org @ 2009-04-21 16:01 UTC (permalink / raw)
To: gcc-bugs
--
jakub at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|4.4.0 |4.4.1
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36201
^ permalink raw reply [flat|nested] 14+ messages in thread
* [Bug middle-end/36201] [4.4 Regression] NVR in the front-end causes missed optimization later on (<retval> thought to alias arguments)
2008-05-10 19:36 [Bug middle-end/36201] New: NVR in the front-end causes missed optimization later on (<retval> thought to alias arguments) pinskia at gcc dot gnu dot org
` (8 preceding siblings ...)
2009-04-21 16:01 ` jakub at gcc dot gnu dot org
@ 2009-07-22 10:35 ` jakub at gcc dot gnu dot org
2009-10-15 12:53 ` jakub at gcc dot gnu dot org
` (2 subsequent siblings)
12 siblings, 0 replies; 14+ messages in thread
From: jakub at gcc dot gnu dot org @ 2009-07-22 10:35 UTC (permalink / raw)
To: gcc-bugs
--
jakub at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|4.4.1 |4.4.2
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36201
^ permalink raw reply [flat|nested] 14+ messages in thread
* [Bug middle-end/36201] [4.4 Regression] NVR in the front-end causes missed optimization later on (<retval> thought to alias arguments)
2008-05-10 19:36 [Bug middle-end/36201] New: NVR in the front-end causes missed optimization later on (<retval> thought to alias arguments) pinskia at gcc dot gnu dot org
` (9 preceding siblings ...)
2009-07-22 10:35 ` jakub at gcc dot gnu dot org
@ 2009-10-15 12:53 ` jakub at gcc dot gnu dot org
2010-01-21 13:19 ` jakub at gcc dot gnu dot org
2010-04-30 8:58 ` jakub at gcc dot gnu dot org
12 siblings, 0 replies; 14+ messages in thread
From: jakub at gcc dot gnu dot org @ 2009-10-15 12:53 UTC (permalink / raw)
To: gcc-bugs
--
jakub at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|4.4.2 |4.4.3
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36201
^ permalink raw reply [flat|nested] 14+ messages in thread
* [Bug middle-end/36201] [4.4 Regression] NVR in the front-end causes missed optimization later on (<retval> thought to alias arguments)
2008-05-10 19:36 [Bug middle-end/36201] New: NVR in the front-end causes missed optimization later on (<retval> thought to alias arguments) pinskia at gcc dot gnu dot org
` (10 preceding siblings ...)
2009-10-15 12:53 ` jakub at gcc dot gnu dot org
@ 2010-01-21 13:19 ` jakub at gcc dot gnu dot org
2010-04-30 8:58 ` jakub at gcc dot gnu dot org
12 siblings, 0 replies; 14+ messages in thread
From: jakub at gcc dot gnu dot org @ 2010-01-21 13:19 UTC (permalink / raw)
To: gcc-bugs
--
jakub at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|4.4.3 |4.4.4
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36201
^ permalink raw reply [flat|nested] 14+ messages in thread
* [Bug middle-end/36201] [4.4 Regression] NVR in the front-end causes missed optimization later on (<retval> thought to alias arguments)
2008-05-10 19:36 [Bug middle-end/36201] New: NVR in the front-end causes missed optimization later on (<retval> thought to alias arguments) pinskia at gcc dot gnu dot org
` (11 preceding siblings ...)
2010-01-21 13:19 ` jakub at gcc dot gnu dot org
@ 2010-04-30 8:58 ` jakub at gcc dot gnu dot org
12 siblings, 0 replies; 14+ messages in thread
From: jakub at gcc dot gnu dot org @ 2010-04-30 8:58 UTC (permalink / raw)
To: gcc-bugs
--
jakub at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|4.4.4 |4.4.5
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36201
^ permalink raw reply [flat|nested] 14+ messages in thread
end of thread, other threads:[~2010-04-30 8:53 UTC | newest]
Thread overview: 14+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2008-05-10 19:36 [Bug middle-end/36201] New: NVR in the front-end causes missed optimization later on (<retval> thought to alias arguments) pinskia at gcc dot gnu dot org
2008-05-13 8:44 ` [Bug middle-end/36201] " rguenth at gcc dot gnu dot org
2008-05-13 9:15 ` rguenth at gcc dot gnu dot org
2008-05-13 11:42 ` rguenth at gcc dot gnu dot org
2008-05-13 13:16 ` rguenth at gcc dot gnu dot org
2008-12-31 21:12 ` [Bug middle-end/36201] [4.4 Regression] " pinskia at gcc dot gnu dot org
2009-01-05 11:19 ` rguenth at gcc dot gnu dot org
2009-04-03 10:28 ` [Bug middle-end/36201] [4.4/4.5 " rguenth at gcc dot gnu dot org
2009-04-03 10:33 ` [Bug middle-end/36201] [4.4 " rguenth at gcc dot gnu dot org
2009-04-21 16:01 ` jakub at gcc dot gnu dot org
2009-07-22 10:35 ` jakub at gcc dot gnu dot org
2009-10-15 12:53 ` jakub at gcc dot gnu dot org
2010-01-21 13:19 ` jakub at gcc dot gnu dot org
2010-04-30 8:58 ` jakub at gcc dot gnu dot org
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