* [Bug tree-optimization/102798] [9/10/11/12 Regression] wrong code with -O3 -fno-tree-pta -mavx512f by r9-2475
2021-10-16 12:43 [Bug target/102798] New: [9/10/11/12 Regression] wrong code with -O3 -fno-tree-pta -mavx512f zsojka at seznam dot cz
@ 2021-10-16 15:54 ` hjl.tools at gmail dot com
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From: hjl.tools at gmail dot com @ 2021-10-16 15:54 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102798
H.J. Lu <hjl.tools at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Ever confirmed|0 |1
Summary|[9/10/11/12 Regression] |[9/10/11/12 Regression]
|wrong code with -O3 |wrong code with -O3
|-fno-tree-pta -mavx512f |-fno-tree-pta -mavx512f by
| |r9-2475
Status|UNCONFIRMED |NEW
CC| |rguenth at gcc dot gnu.org
Last reconfirmed| |2021-10-16
Component|target |tree-optimization
^ permalink raw reply [flat|nested] 26+ messages in thread
* [Bug tree-optimization/102798] [9/10/11/12 Regression] wrong code with -O3 -fno-tree-pta -mavx512f by r9-2475
2021-10-16 12:43 [Bug target/102798] New: [9/10/11/12 Regression] wrong code with -O3 -fno-tree-pta -mavx512f zsojka at seznam dot cz
2021-10-16 15:54 ` [Bug tree-optimization/102798] [9/10/11/12 Regression] wrong code with -O3 -fno-tree-pta -mavx512f by r9-2475 hjl.tools at gmail dot com
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From: hjl.tools at gmail dot com @ 2021-10-16 16:31 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102798
--- Comment #1 from H.J. Lu <hjl.tools at gmail dot com> ---
Source has
__attribute__((__noipa__))
void BUF_reverse (unsigned char *out, const unsigned char *in, size_t size)
{
size_t i;
if (in)
{
out += size - 1;
for (i = 0; i < size; i++)
*out-- = *in++;
}
else
We generate
BUF_reverse:
.LFB0:
.cfi_startproc
movq %rdi, %r8
movq %rsi, %rcx
movq %rdx, %rax
testq %rdx, %rdx <<< RDX has size, not in.
je .L28
^ permalink raw reply [flat|nested] 26+ messages in thread
* [Bug tree-optimization/102798] [9/10/11/12 Regression] wrong code with -O3 -fno-tree-pta -mavx512f by r9-2475
2021-10-16 12:43 [Bug target/102798] New: [9/10/11/12 Regression] wrong code with -O3 -fno-tree-pta -mavx512f zsojka at seznam dot cz
2021-10-16 15:54 ` [Bug tree-optimization/102798] [9/10/11/12 Regression] wrong code with -O3 -fno-tree-pta -mavx512f by r9-2475 hjl.tools at gmail dot com
2021-10-16 16:31 ` hjl.tools at gmail dot com
@ 2021-10-16 18:10 ` hjl.tools at gmail dot com
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From: hjl.tools at gmail dot com @ 2021-10-16 18:10 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102798
--- Comment #2 from H.J. Lu <hjl.tools at gmail dot com> ---
192t.thread3 has
if (in_16(D) != 0B)
goto <bb 3>; [70.00%]
else
goto <bb 31>; [30.00%]
193t.dom3 removed "if (in_16(D) != 0B)".
^ permalink raw reply [flat|nested] 26+ messages in thread
* [Bug tree-optimization/102798] [9/10/11/12 Regression] wrong code with -O3 -fno-tree-pta -mavx512f by r9-2475
2021-10-16 12:43 [Bug target/102798] New: [9/10/11/12 Regression] wrong code with -O3 -fno-tree-pta -mavx512f zsojka at seznam dot cz
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From: hjl.tools at gmail dot com @ 2021-10-16 18:16 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102798
--- Comment #3 from H.J. Lu <hjl.tools at gmail dot com> ---
Visiting conditional with predicate: if (in_16(D) != 0B)
With known ranges
in_16(D): const unsigned char * [1B, +INF]
1B for lower bound is wrong.
^ permalink raw reply [flat|nested] 26+ messages in thread
* [Bug tree-optimization/102798] [9/10/11/12 Regression] wrong code with -O3 -fno-tree-pta -mavx512f by r9-2475
2021-10-16 12:43 [Bug target/102798] New: [9/10/11/12 Regression] wrong code with -O3 -fno-tree-pta -mavx512f zsojka at seznam dot cz
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From: pinskia at gcc dot gnu.org @ 2021-10-16 18:42 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102798
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |alias
--- Comment #4 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Before the vectorizer:
unsigned charD.28 * out_18(D) = outD.3197;
const unsigned charD.28 * in_16(D) = inD.3198;
size_tD.3196 size_17(D) = sizeD.3199;
After:
unsigned charD.28 * out_18(D) = outD.3197;
# PT = anything
const unsigned charD.28 * in_16(D) = inD.3198;
size_tD.3196 size_17(D) = sizeD.3199;
That seems to be causing the issue.
^ permalink raw reply [flat|nested] 26+ messages in thread
* [Bug tree-optimization/102798] [9/10/11/12 Regression] wrong code with -O3 -fno-tree-pta -mavx512f by r9-2475
2021-10-16 12:43 [Bug target/102798] New: [9/10/11/12 Regression] wrong code with -O3 -fno-tree-pta -mavx512f zsojka at seznam dot cz
` (4 preceding siblings ...)
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@ 2021-10-16 18:43 ` pinskia at gcc dot gnu.org
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From: pinskia at gcc dot gnu.org @ 2021-10-16 18:43 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102798
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|--- |9.5
^ permalink raw reply [flat|nested] 26+ messages in thread
* [Bug tree-optimization/102798] [9/10/11/12 Regression] wrong code with -O3 -fno-tree-pta by r9-2475
2021-10-16 12:43 [Bug target/102798] New: [9/10/11/12 Regression] wrong code with -O3 -fno-tree-pta -mavx512f zsojka at seznam dot cz
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From: pinskia at gcc dot gnu.org @ 2021-10-16 18:46 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102798
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|[9/10/11/12 Regression] |[9/10/11/12 Regression]
|wrong code with -O3 |wrong code with -O3
|-fno-tree-pta -mavx512f by |-fno-tree-pta by r9-2475
|r9-2475 |
--- Comment #5 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Here is a testcase which fails without -mavx512
typedef __SIZE_TYPE__ size_t;
__attribute__((__noipa__))
void BUF_reverse (unsigned char *out, const unsigned char *in, size_t size)
{
size_t i;
if (in)
{
out += size - 1;
for (i = 0; i < size; i++)
*out++ = *in++;
}
else
{
unsigned char *q;
char c;
q = out + size - 1;
for (i = 0; i < size ; i++)
{
*out++ = 1;
}
}
}
int
main (void)
{
unsigned char buf[40];
unsigned char buf1[40];
for (unsigned i = 0; i < sizeof (buf); i++)
buf[i] = i;
BUF_reverse (buf, 0, sizeof (buf));
for (unsigned i = 0; i < sizeof (buf); i++)
if (buf[i] != 1)
__builtin_abort ();
return 0;
}
^ permalink raw reply [flat|nested] 26+ messages in thread
* [Bug tree-optimization/102798] [9/10/11/12 Regression] wrong code with -O3 -fno-tree-pta by r9-2475
2021-10-16 12:43 [Bug target/102798] New: [9/10/11/12 Regression] wrong code with -O3 -fno-tree-pta -mavx512f zsojka at seznam dot cz
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From: hjl.tools at gmail dot com @ 2021-10-16 19:08 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102798
--- Comment #6 from H.J. Lu <hjl.tools at gmail dot com> ---
A pointer is known to non-null only if we know where the pointer is
pointing to. Since the null field is initialized to 0, we need to
check both null and anything. This works on the test case:
diff --git a/gcc/value-query.cc b/gcc/value-query.cc
index ab133aab114..1e8e3b96ea7 100644
--- a/gcc/value-query.cc
+++ b/gcc/value-query.cc
@@ -302,7 +302,7 @@ get_ssa_name_ptr_info_nonnull (const_tree name)
When PTA analysis is improved, pt.anything, pt.nonlocal
and pt.escaped may also has to be considered before
deciding that pointer cannot point to NULL. */
- return !pi->pt.null;
+ return !pi->pt.null && !pi->pt.anything;
}
// Update the global range for NAME into the SSA_RANGE_NAME_INFO and
^ permalink raw reply [flat|nested] 26+ messages in thread
* [Bug tree-optimization/102798] [9/10/11/12 Regression] wrong code with -O3 -fno-tree-pta by r9-2475
2021-10-16 12:43 [Bug target/102798] New: [9/10/11/12 Regression] wrong code with -O3 -fno-tree-pta -mavx512f zsojka at seznam dot cz
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From: hjl.tools at gmail dot com @ 2021-10-17 0:53 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102798
H.J. Lu <hjl.tools at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |aldyh at gcc dot gnu.org
--- Comment #7 from H.J. Lu <hjl.tools at gmail dot com> ---
Looks like a VRP bug. For:
<bb 2> [local count: 168730857]:
if (in_16(D) != 0B)
goto <bb 3>; [70.00%]
else
goto <bb 6>; [30.00%]
<bb 3> [local count: 118111600]:
_1 = size_17(D) + 18446744073709551615;
out_26 = out_18(D) + _1;
goto <bb 5>; [100.00%]
VRP reports:
in_16(D) : BACK visiting block 3 for in_16(D)
2->3 has cache, const unsigned char * VARYING, update.
FWD visiting block 3 for in_16(D) starting range : UNDEFINED
edge 2->3 :const unsigned char * [1B, +INF]
Updating range to const unsigned char * [1B, +INF]
Updating blocks :
DONE visiting blocks for in_16(D)
^ permalink raw reply [flat|nested] 26+ messages in thread
* [Bug tree-optimization/102798] [9/10/11/12 Regression] wrong code with -O3 -fno-tree-pta by r9-2475
2021-10-16 12:43 [Bug target/102798] New: [9/10/11/12 Regression] wrong code with -O3 -fno-tree-pta -mavx512f zsojka at seznam dot cz
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From: hjl.tools at gmail dot com @ 2021-10-17 2:49 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102798
--- Comment #8 from H.J. Lu <hjl.tools at gmail dot com> ---
Vectorizer has
if (DR_PTR_INFO (dr)
&& TREE_CODE (addr_base) == SSA_NAME
&& !SSA_NAME_PTR_INFO (addr_base))
vect_duplicate_ssa_name_ptr_info (addr_base, dr_info);
This fixes the crash.
diff --git a/gcc/tree-vect-data-refs.c b/gcc/tree-vect-data-refs.c
index 1e13148190c..fca5aebfbdb 100644
--- a/gcc/tree-vect-data-refs.c
+++ b/gcc/tree-vect-data-refs.c
@@ -4785,7 +4785,8 @@ vect_create_addr_base_for_vector_ref (vec_info *vinfo,
stmt_vec_info stmt_info,
if (DR_PTR_INFO (dr)
&& TREE_CODE (addr_base) == SSA_NAME
- && !SSA_NAME_PTR_INFO (addr_base))
+ && !SSA_NAME_PTR_INFO (addr_base)
+ && TREE_CODE (SSA_NAME_VAR (addr_base)) != PARM_DECL)
vect_duplicate_ssa_name_ptr_info (addr_base, dr_info);
if (dump_enabled_p ())
^ permalink raw reply [flat|nested] 26+ messages in thread
* [Bug tree-optimization/102798] [9/10/11/12 Regression] wrong code with -O3 -fno-tree-pta by r9-2475
2021-10-16 12:43 [Bug target/102798] New: [9/10/11/12 Regression] wrong code with -O3 -fno-tree-pta -mavx512f zsojka at seznam dot cz
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From: hjl.tools at gmail dot com @ 2021-10-17 13:33 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102798
--- Comment #9 from H.J. Lu <hjl.tools at gmail dot com> ---
Created attachment 51618
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=51618&action=edit
A patch
^ permalink raw reply [flat|nested] 26+ messages in thread
* [Bug tree-optimization/102798] [9/10/11/12 Regression] wrong code with -O3 -fno-tree-pta by r9-2475
2021-10-16 12:43 [Bug target/102798] New: [9/10/11/12 Regression] wrong code with -O3 -fno-tree-pta -mavx512f zsojka at seznam dot cz
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From: hjl.tools at gmail dot com @ 2021-10-17 18:29 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102798
H.J. Lu <hjl.tools at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Attachment #51618|0 |1
is obsolete| |
--- Comment #10 from H.J. Lu <hjl.tools at gmail dot com> ---
Created attachment 51619
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=51619&action=edit
An updated patch
^ permalink raw reply [flat|nested] 26+ messages in thread
* [Bug tree-optimization/102798] [9/10/11/12 Regression] wrong code with -O3 -fno-tree-pta by r9-2475
2021-10-16 12:43 [Bug target/102798] New: [9/10/11/12 Regression] wrong code with -O3 -fno-tree-pta -mavx512f zsojka at seznam dot cz
` (11 preceding siblings ...)
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From: rguenth at gcc dot gnu.org @ 2021-10-18 6:39 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102798
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
Assignee|unassigned at gcc dot gnu.org |rguenth at gcc dot gnu.org
^ permalink raw reply [flat|nested] 26+ messages in thread
* [Bug tree-optimization/102798] [9/10/11/12 Regression] wrong code with -O3 -fno-tree-pta by r9-2475
2021-10-16 12:43 [Bug target/102798] New: [9/10/11/12 Regression] wrong code with -O3 -fno-tree-pta -mavx512f zsojka at seznam dot cz
` (12 preceding siblings ...)
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@ 2021-10-18 7:03 ` rguenth at gcc dot gnu.org
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From: rguenth at gcc dot gnu.org @ 2021-10-18 7:03 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102798
--- Comment #11 from Richard Biener <rguenth at gcc dot gnu.org> ---
The issue is that the vectorizer should only duplicate pointer-info to SSA
names it created itself, not to _any_ existing ones.
^ permalink raw reply [flat|nested] 26+ messages in thread
* [Bug tree-optimization/102798] [9/10/11/12 Regression] wrong code with -O3 -fno-tree-pta by r9-2475
2021-10-16 12:43 [Bug target/102798] New: [9/10/11/12 Regression] wrong code with -O3 -fno-tree-pta -mavx512f zsojka at seznam dot cz
` (13 preceding siblings ...)
2021-10-18 7:03 ` rguenth at gcc dot gnu.org
@ 2021-10-18 8:26 ` cvs-commit at gcc dot gnu.org
2021-10-18 8:27 ` [Bug tree-optimization/102798] [9/10/11 " rguenth at gcc dot gnu.org
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From: cvs-commit at gcc dot gnu.org @ 2021-10-18 8:26 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102798
--- Comment #12 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Richard Biener <rguenth@gcc.gnu.org>:
https://gcc.gnu.org/g:a5b1b2a186d94b31a522395e9d02c9cec1b928cb
commit r12-4466-ga5b1b2a186d94b31a522395e9d02c9cec1b928cb
Author: Richard Biener <rguenther@suse.de>
Date: Mon Oct 18 09:10:43 2021 +0200
tree-optimization/102798 - avoid copying PTA info to old SSA names
The vectorizer duplicates pointer-info to created pointer bases
but it has to avoid changing points-to info on existing SSA names
because there's now flow-sensitive info in there (pt->pt_null as
set from VRP).
2021-10-18 Richard Biener <rguenther@suse.de>
PR tree-optimization/102798
* tree-vect-data-refs.c (vect_create_addr_base_for_vector_ref):
Only copy points-to info to newly generated SSA names.
* gcc.dg/pr102798.c: New testcase.
^ permalink raw reply [flat|nested] 26+ messages in thread
* [Bug tree-optimization/102798] [9/10/11 Regression] wrong code with -O3 -fno-tree-pta by r9-2475
2021-10-16 12:43 [Bug target/102798] New: [9/10/11/12 Regression] wrong code with -O3 -fno-tree-pta -mavx512f zsojka at seznam dot cz
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From: rguenth at gcc dot gnu.org @ 2021-10-18 8:27 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102798
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|[9/10/11/12 Regression] |[9/10/11 Regression] wrong
|wrong code with -O3 |code with -O3 -fno-tree-pta
|-fno-tree-pta by r9-2475 |by r9-2475
Known to fail|12.0 |
Known to work| |12.0
Priority|P3 |P2
^ permalink raw reply [flat|nested] 26+ messages in thread
* [Bug tree-optimization/102798] [9/10/11 Regression] wrong code with -O3 -fno-tree-pta by r9-2475
2021-10-16 12:43 [Bug target/102798] New: [9/10/11/12 Regression] wrong code with -O3 -fno-tree-pta -mavx512f zsojka at seznam dot cz
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@ 2021-11-08 13:32 ` cvs-commit at gcc dot gnu.org
2022-02-17 10:48 ` [Bug tree-optimization/102798] [9/10 " cvs-commit at gcc dot gnu.org
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From: cvs-commit at gcc dot gnu.org @ 2021-11-08 13:32 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102798
--- Comment #13 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The releases/gcc-11 branch has been updated by Richard Biener
<rguenth@gcc.gnu.org>:
https://gcc.gnu.org/g:1631d6d2910e03e4517079d6e6ad0ae1aeb24dfa
commit r11-9229-g1631d6d2910e03e4517079d6e6ad0ae1aeb24dfa
Author: Richard Biener <rguenther@suse.de>
Date: Mon Oct 18 09:10:43 2021 +0200
tree-optimization/102798 - avoid copying PTA info to old SSA names
The vectorizer duplicates pointer-info to created pointer bases
but it has to avoid changing points-to info on existing SSA names
because there's now flow-sensitive info in there (pt->pt_null as
set from VRP).
2021-10-18 Richard Biener <rguenther@suse.de>
PR tree-optimization/102798
* tree-vect-data-refs.c (vect_create_addr_base_for_vector_ref):
Only copy points-to info to newly generated SSA names.
* gcc.dg/pr102798.c: New testcase.
^ permalink raw reply [flat|nested] 26+ messages in thread
* [Bug tree-optimization/102798] [9/10 Regression] wrong code with -O3 -fno-tree-pta by r9-2475
2021-10-16 12:43 [Bug target/102798] New: [9/10/11/12 Regression] wrong code with -O3 -fno-tree-pta -mavx512f zsojka at seznam dot cz
` (16 preceding siblings ...)
2021-11-08 13:32 ` cvs-commit at gcc dot gnu.org
@ 2022-02-17 10:48 ` cvs-commit at gcc dot gnu.org
2022-02-17 11:57 ` [Bug tree-optimization/102798] [9 " cvs-commit at gcc dot gnu.org
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From: cvs-commit at gcc dot gnu.org @ 2022-02-17 10:48 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102798
--- Comment #14 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The releases/gcc-10 branch has been updated by Richard Biener
<rguenth@gcc.gnu.org>:
https://gcc.gnu.org/g:6a6ed1bd9d0b20d0ec0ca6d7ab1e0cefe57db687
commit r10-10463-g6a6ed1bd9d0b20d0ec0ca6d7ab1e0cefe57db687
Author: Richard Biener <rguenther@suse.de>
Date: Mon Oct 18 09:10:43 2021 +0200
tree-optimization/102798 - avoid copying PTA info to old SSA names
The vectorizer duplicates pointer-info to created pointer bases
but it has to avoid changing points-to info on existing SSA names
because there's now flow-sensitive info in there (pt->pt_null as
set from VRP).
2021-10-18 Richard Biener <rguenther@suse.de>
PR tree-optimization/102798
* tree-vect-data-refs.c (vect_create_addr_base_for_vector_ref):
Only copy points-to info to newly generated SSA names.
* gcc.dg/pr102798.c: New testcase.
(cherry picked from commit 1631d6d2910e03e4517079d6e6ad0ae1aeb24dfa)
^ permalink raw reply [flat|nested] 26+ messages in thread
* [Bug tree-optimization/102798] [9 Regression] wrong code with -O3 -fno-tree-pta by r9-2475
2021-10-16 12:43 [Bug target/102798] New: [9/10/11/12 Regression] wrong code with -O3 -fno-tree-pta -mavx512f zsojka at seznam dot cz
` (17 preceding siblings ...)
2022-02-17 10:48 ` [Bug tree-optimization/102798] [9/10 " cvs-commit at gcc dot gnu.org
@ 2022-02-17 11:57 ` cvs-commit at gcc dot gnu.org
2022-02-17 11:58 ` rguenth at gcc dot gnu.org
` (5 subsequent siblings)
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From: cvs-commit at gcc dot gnu.org @ 2022-02-17 11:57 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102798
--- Comment #15 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The releases/gcc-9 branch has been updated by Richard Biener
<rguenth@gcc.gnu.org>:
https://gcc.gnu.org/g:523f5950c70d65714bedf9d5fe164d9e6d69dd87
commit r9-9956-g523f5950c70d65714bedf9d5fe164d9e6d69dd87
Author: Richard Biener <rguenther@suse.de>
Date: Mon Oct 18 09:10:43 2021 +0200
tree-optimization/102798 - avoid copying PTA info to old SSA names
The vectorizer duplicates pointer-info to created pointer bases
but it has to avoid changing points-to info on existing SSA names
because there's now flow-sensitive info in there (pt->pt_null as
set from VRP).
2021-10-18 Richard Biener <rguenther@suse.de>
PR tree-optimization/102798
* tree-vect-data-refs.c (vect_create_addr_base_for_vector_ref):
Only copy points-to info to newly generated SSA names.
* gcc.dg/pr102798.c: New testcase.
(cherry picked from commit 1631d6d2910e03e4517079d6e6ad0ae1aeb24dfa)
^ permalink raw reply [flat|nested] 26+ messages in thread
* [Bug tree-optimization/102798] [9 Regression] wrong code with -O3 -fno-tree-pta by r9-2475
2021-10-16 12:43 [Bug target/102798] New: [9/10/11/12 Regression] wrong code with -O3 -fno-tree-pta -mavx512f zsojka at seznam dot cz
` (18 preceding siblings ...)
2022-02-17 11:57 ` [Bug tree-optimization/102798] [9 " cvs-commit at gcc dot gnu.org
@ 2022-02-17 11:58 ` rguenth at gcc dot gnu.org
2022-02-18 7:10 ` rguenth at gcc dot gnu.org
` (4 subsequent siblings)
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From: rguenth at gcc dot gnu.org @ 2022-02-17 11:58 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102798
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Resolution|--- |FIXED
Status|ASSIGNED |RESOLVED
--- Comment #16 from Richard Biener <rguenth at gcc dot gnu.org> ---
Fixed.
^ permalink raw reply [flat|nested] 26+ messages in thread
* [Bug tree-optimization/102798] [9 Regression] wrong code with -O3 -fno-tree-pta by r9-2475
2021-10-16 12:43 [Bug target/102798] New: [9/10/11/12 Regression] wrong code with -O3 -fno-tree-pta -mavx512f zsojka at seznam dot cz
` (19 preceding siblings ...)
2022-02-17 11:58 ` rguenth at gcc dot gnu.org
@ 2022-02-18 7:10 ` rguenth at gcc dot gnu.org
2022-02-18 7:11 ` rguenth at gcc dot gnu.org
` (3 subsequent siblings)
24 siblings, 0 replies; 26+ messages in thread
From: rguenth at gcc dot gnu.org @ 2022-02-18 7:10 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102798
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |seurer at gcc dot gnu.org
--- Comment #17 from Richard Biener <rguenth at gcc dot gnu.org> ---
*** Bug 104586 has been marked as a duplicate of this bug. ***
^ permalink raw reply [flat|nested] 26+ messages in thread
* [Bug tree-optimization/102798] [9 Regression] wrong code with -O3 -fno-tree-pta by r9-2475
2021-10-16 12:43 [Bug target/102798] New: [9/10/11/12 Regression] wrong code with -O3 -fno-tree-pta -mavx512f zsojka at seznam dot cz
` (20 preceding siblings ...)
2022-02-18 7:10 ` rguenth at gcc dot gnu.org
@ 2022-02-18 7:11 ` rguenth at gcc dot gnu.org
2022-02-18 7:13 ` rguenth at gcc dot gnu.org
` (2 subsequent siblings)
24 siblings, 0 replies; 26+ messages in thread
From: rguenth at gcc dot gnu.org @ 2022-02-18 7:11 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102798
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Resolution|FIXED |---
Status|RESOLVED |ASSIGNED
Depends on| |96522
--- Comment #18 from Richard Biener <rguenth at gcc dot gnu.org> ---
On the gcc-9 branch depends on PR96522.
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96522
[Bug 96522] [9 Regression] Incorrect with with -O -fno-tree-pta
^ permalink raw reply [flat|nested] 26+ messages in thread
* [Bug tree-optimization/102798] [9 Regression] wrong code with -O3 -fno-tree-pta by r9-2475
2021-10-16 12:43 [Bug target/102798] New: [9/10/11/12 Regression] wrong code with -O3 -fno-tree-pta -mavx512f zsojka at seznam dot cz
` (21 preceding siblings ...)
2022-02-18 7:11 ` rguenth at gcc dot gnu.org
@ 2022-02-18 7:13 ` rguenth at gcc dot gnu.org
2022-02-18 8:21 ` rguenth at gcc dot gnu.org
2022-02-18 8:22 ` rguenth at gcc dot gnu.org
24 siblings, 0 replies; 26+ messages in thread
From: rguenth at gcc dot gnu.org @ 2022-02-18 7:13 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102798
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Depends on| |97043
--- Comment #19 from Richard Biener <rguenth at gcc dot gnu.org> ---
And PR97043.
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97043
[Bug 97043] latent wrong-code with SLP vectorization
^ permalink raw reply [flat|nested] 26+ messages in thread
* [Bug tree-optimization/102798] [9 Regression] wrong code with -O3 -fno-tree-pta by r9-2475
2021-10-16 12:43 [Bug target/102798] New: [9/10/11/12 Regression] wrong code with -O3 -fno-tree-pta -mavx512f zsojka at seznam dot cz
` (22 preceding siblings ...)
2022-02-18 7:13 ` rguenth at gcc dot gnu.org
@ 2022-02-18 8:21 ` rguenth at gcc dot gnu.org
2022-02-18 8:22 ` rguenth at gcc dot gnu.org
24 siblings, 0 replies; 26+ messages in thread
From: rguenth at gcc dot gnu.org @ 2022-02-18 8:21 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102798
Bug 102798 depends on bug 96522, which changed state.
Bug 96522 Summary: [9 Regression] Incorrect with with -O -fno-tree-pta
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96522
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
^ permalink raw reply [flat|nested] 26+ messages in thread
* [Bug tree-optimization/102798] [9 Regression] wrong code with -O3 -fno-tree-pta by r9-2475
2021-10-16 12:43 [Bug target/102798] New: [9/10/11/12 Regression] wrong code with -O3 -fno-tree-pta -mavx512f zsojka at seznam dot cz
` (23 preceding siblings ...)
2022-02-18 8:21 ` rguenth at gcc dot gnu.org
@ 2022-02-18 8:22 ` rguenth at gcc dot gnu.org
24 siblings, 0 replies; 26+ messages in thread
From: rguenth at gcc dot gnu.org @ 2022-02-18 8:22 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102798
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Resolution|--- |FIXED
Status|ASSIGNED |RESOLVED
--- Comment #20 from Richard Biener <rguenth at gcc dot gnu.org> ---
Now really fixed.
^ permalink raw reply [flat|nested] 26+ messages in thread