* [Bug middle-end/36194] [4.1/4.2/4.3/4.4 Regression] Truncation optimization in combine can remove necessary truncations
2008-05-09 19:05 [Bug middle-end/36194] New: [4.1/4.2/4.3/4.4 Regression] Truncation optimization in combine can remove necessary truncations nemet at gcc dot gnu dot org
@ 2008-05-09 19:07 ` pinskia at gcc dot gnu dot org
2008-05-09 20:47 ` nemet at gcc dot gnu dot org
` (8 subsequent siblings)
9 siblings, 0 replies; 11+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2008-05-09 19:07 UTC (permalink / raw)
To: gcc-bugs
--
pinskia at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |pinskia at gcc dot gnu dot
| |org
Keywords| |wrong-code
Target Milestone|--- |4.1.3
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36194
^ permalink raw reply [flat|nested] 11+ messages in thread* [Bug middle-end/36194] [4.1/4.2/4.3/4.4 Regression] Truncation optimization in combine can remove necessary truncations
2008-05-09 19:05 [Bug middle-end/36194] New: [4.1/4.2/4.3/4.4 Regression] Truncation optimization in combine can remove necessary truncations nemet at gcc dot gnu dot org
2008-05-09 19:07 ` [Bug middle-end/36194] " pinskia at gcc dot gnu dot org
@ 2008-05-09 20:47 ` nemet at gcc dot gnu dot org
2008-05-13 16:39 ` [Bug middle-end/36194] [4.2/4.3/4.4 " nemet at gcc dot gnu dot org
` (7 subsequent siblings)
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From: nemet at gcc dot gnu dot org @ 2008-05-09 20:47 UTC (permalink / raw)
To: gcc-bugs
------- Comment #1 from nemet at gcc dot gnu dot org 2008-05-09 20:46 -------
Patch: http://gcc.gnu.org/ml/gcc-patches/2008-05/msg00591.html
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36194
^ permalink raw reply [flat|nested] 11+ messages in thread* [Bug middle-end/36194] [4.2/4.3/4.4 Regression] Truncation optimization in combine can remove necessary truncations
2008-05-09 19:05 [Bug middle-end/36194] New: [4.1/4.2/4.3/4.4 Regression] Truncation optimization in combine can remove necessary truncations nemet at gcc dot gnu dot org
2008-05-09 19:07 ` [Bug middle-end/36194] " pinskia at gcc dot gnu dot org
2008-05-09 20:47 ` nemet at gcc dot gnu dot org
@ 2008-05-13 16:39 ` nemet at gcc dot gnu dot org
2008-05-15 19:32 ` nemet at gcc dot gnu dot org
` (6 subsequent siblings)
9 siblings, 0 replies; 11+ messages in thread
From: nemet at gcc dot gnu dot org @ 2008-05-13 16:39 UTC (permalink / raw)
To: gcc-bugs
------- Comment #2 from nemet at gcc dot gnu dot org 2008-05-13 16:38 -------
The change causing this was not present in 4.1.
--
nemet at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|[4.1/4.2/4.3/4.4 Regression]|[4.2/4.3/4.4 Regression]
|Truncation optimization in |Truncation optimization in
|combine can remove necessary|combine can remove necessary
|truncations |truncations
Target Milestone|4.1.3 |4.2.4
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36194
^ permalink raw reply [flat|nested] 11+ messages in thread* [Bug middle-end/36194] [4.2/4.3/4.4 Regression] Truncation optimization in combine can remove necessary truncations
2008-05-09 19:05 [Bug middle-end/36194] New: [4.1/4.2/4.3/4.4 Regression] Truncation optimization in combine can remove necessary truncations nemet at gcc dot gnu dot org
` (2 preceding siblings ...)
2008-05-13 16:39 ` [Bug middle-end/36194] [4.2/4.3/4.4 " nemet at gcc dot gnu dot org
@ 2008-05-15 19:32 ` nemet at gcc dot gnu dot org
2008-05-16 19:41 ` [Bug middle-end/36194] [4.2/4.3 " rguenth at gcc dot gnu dot org
` (5 subsequent siblings)
9 siblings, 0 replies; 11+ messages in thread
From: nemet at gcc dot gnu dot org @ 2008-05-15 19:32 UTC (permalink / raw)
To: gcc-bugs
------- Comment #3 from nemet at gcc dot gnu dot org 2008-05-15 19:28 -------
Subject: Bug 36194
Author: nemet
Date: Thu May 15 19:25:53 2008
New Revision: 135392
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=135392
Log:
PR middle-end/36194
* combine.c (check_conversion): Rename to check_promoted_subreg.
Don't call record_truncated_value from here.
(record_truncated_value): Turn it into a for_each_rtx callback.
(record_truncated_values): New function.
(combine_instructions): Call note_uses with
record_truncated_values. Change name of check_conversion to
check_promoted_subreg.
testsuite/
* gcc.dg/pr36194.c: New test.
Added:
trunk/gcc/testsuite/gcc.dg/pr36194.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/combine.c
trunk/gcc/testsuite/ChangeLog
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36194
^ permalink raw reply [flat|nested] 11+ messages in thread* [Bug middle-end/36194] [4.2/4.3 Regression] Truncation optimization in combine can remove necessary truncations
2008-05-09 19:05 [Bug middle-end/36194] New: [4.1/4.2/4.3/4.4 Regression] Truncation optimization in combine can remove necessary truncations nemet at gcc dot gnu dot org
` (3 preceding siblings ...)
2008-05-15 19:32 ` nemet at gcc dot gnu dot org
@ 2008-05-16 19:41 ` rguenth at gcc dot gnu dot org
2008-05-19 20:35 ` jsm28 at gcc dot gnu dot org
` (4 subsequent siblings)
9 siblings, 0 replies; 11+ messages in thread
From: rguenth at gcc dot gnu dot org @ 2008-05-16 19:41 UTC (permalink / raw)
To: gcc-bugs
--
rguenth at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P3 |P2
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36194
^ permalink raw reply [flat|nested] 11+ messages in thread* [Bug middle-end/36194] [4.2/4.3 Regression] Truncation optimization in combine can remove necessary truncations
2008-05-09 19:05 [Bug middle-end/36194] New: [4.1/4.2/4.3/4.4 Regression] Truncation optimization in combine can remove necessary truncations nemet at gcc dot gnu dot org
` (4 preceding siblings ...)
2008-05-16 19:41 ` [Bug middle-end/36194] [4.2/4.3 " rguenth at gcc dot gnu dot org
@ 2008-05-19 20:35 ` jsm28 at gcc dot gnu dot org
2008-05-19 23:31 ` nemet at gcc dot gnu dot org
` (3 subsequent siblings)
9 siblings, 0 replies; 11+ messages in thread
From: jsm28 at gcc dot gnu dot org @ 2008-05-19 20:35 UTC (permalink / raw)
To: gcc-bugs
------- Comment #4 from jsm28 at gcc dot gnu dot org 2008-05-19 20:25 -------
4.2.4 is being released, changing milestones to 4.2.5.
--
jsm28 at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|4.2.4 |4.2.5
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36194
^ permalink raw reply [flat|nested] 11+ messages in thread* [Bug middle-end/36194] [4.2/4.3 Regression] Truncation optimization in combine can remove necessary truncations
2008-05-09 19:05 [Bug middle-end/36194] New: [4.1/4.2/4.3/4.4 Regression] Truncation optimization in combine can remove necessary truncations nemet at gcc dot gnu dot org
` (5 preceding siblings ...)
2008-05-19 20:35 ` jsm28 at gcc dot gnu dot org
@ 2008-05-19 23:31 ` nemet at gcc dot gnu dot org
2008-05-20 18:44 ` [Bug middle-end/36194] [4.2 " nemet at gcc dot gnu dot org
` (2 subsequent siblings)
9 siblings, 0 replies; 11+ messages in thread
From: nemet at gcc dot gnu dot org @ 2008-05-19 23:31 UTC (permalink / raw)
To: gcc-bugs
------- Comment #5 from nemet at gcc dot gnu dot org 2008-05-19 23:30 -------
Subject: Bug 36194
Author: nemet
Date: Mon May 19 23:29:29 2008
New Revision: 135592
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=135592
Log:
PR middle-end/36194
* combine.c (check_conversion): Rename to check_promoted_subreg.
Don't call record_truncated_value from here.
(record_truncated_value): Turn it into a for_each_rtx callback.
(record_truncated_values): New function.
(combine_instructions): Call note_uses with
record_truncated_values. Change name of check_conversion to
check_promoted_subreg.
testsuite/
* gcc.dg/pr36194.c: New test.
Added:
branches/gcc-4_3-branch/gcc/testsuite/gcc.dg/pr36194.c
Modified:
branches/gcc-4_3-branch/gcc/ChangeLog
branches/gcc-4_3-branch/gcc/combine.c
branches/gcc-4_3-branch/gcc/testsuite/ChangeLog
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36194
^ permalink raw reply [flat|nested] 11+ messages in thread* [Bug middle-end/36194] [4.2 Regression] Truncation optimization in combine can remove necessary truncations
2008-05-09 19:05 [Bug middle-end/36194] New: [4.1/4.2/4.3/4.4 Regression] Truncation optimization in combine can remove necessary truncations nemet at gcc dot gnu dot org
` (6 preceding siblings ...)
2008-05-19 23:31 ` nemet at gcc dot gnu dot org
@ 2008-05-20 18:44 ` nemet at gcc dot gnu dot org
2008-05-20 18:45 ` [Bug middle-end/36194] [Regression] " nemet at gcc dot gnu dot org
2009-04-29 15:12 ` pinskia at gcc dot gnu dot org
9 siblings, 0 replies; 11+ messages in thread
From: nemet at gcc dot gnu dot org @ 2008-05-20 18:44 UTC (permalink / raw)
To: gcc-bugs
------- Comment #6 from nemet at gcc dot gnu dot org 2008-05-20 18:43 -------
Subject: Bug 36194
Author: nemet
Date: Tue May 20 18:42:09 2008
New Revision: 135670
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=135670
Log:
PR middle-end/36194
* combine.c (check_conversion): Rename to check_promoted_subreg.
Don't call record_truncated_value from here.
(record_truncated_value): Turn it into a for_each_rtx callback.
(record_truncated_values): New function.
(combine_instructions): Call note_uses with
record_truncated_values. Change name of check_conversion to
check_promoted_subreg.
testsuite/
* gcc.dg/pr36194.c: New test.
Added:
branches/gcc-4_2-branch/gcc/testsuite/gcc.dg/pr36194.c
Modified:
branches/gcc-4_2-branch/gcc/ChangeLog
branches/gcc-4_2-branch/gcc/combine.c
branches/gcc-4_2-branch/gcc/testsuite/ChangeLog
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36194
^ permalink raw reply [flat|nested] 11+ messages in thread* [Bug middle-end/36194] [Regression] Truncation optimization in combine can remove necessary truncations
2008-05-09 19:05 [Bug middle-end/36194] New: [4.1/4.2/4.3/4.4 Regression] Truncation optimization in combine can remove necessary truncations nemet at gcc dot gnu dot org
` (7 preceding siblings ...)
2008-05-20 18:44 ` [Bug middle-end/36194] [4.2 " nemet at gcc dot gnu dot org
@ 2008-05-20 18:45 ` nemet at gcc dot gnu dot org
2009-04-29 15:12 ` pinskia at gcc dot gnu dot org
9 siblings, 0 replies; 11+ messages in thread
From: nemet at gcc dot gnu dot org @ 2008-05-20 18:45 UTC (permalink / raw)
To: gcc-bugs
------- Comment #7 from nemet at gcc dot gnu dot org 2008-05-20 18:44 -------
Fixed on all branches.
--
nemet at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution| |FIXED
Summary|[4.2 Regression] Truncation |[Regression] Truncation
|optimization in combine can |optimization in combine can
|remove necessary truncations|remove necessary truncations
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36194
^ permalink raw reply [flat|nested] 11+ messages in thread* [Bug middle-end/36194] [Regression] Truncation optimization in combine can remove necessary truncations
2008-05-09 19:05 [Bug middle-end/36194] New: [4.1/4.2/4.3/4.4 Regression] Truncation optimization in combine can remove necessary truncations nemet at gcc dot gnu dot org
` (8 preceding siblings ...)
2008-05-20 18:45 ` [Bug middle-end/36194] [Regression] " nemet at gcc dot gnu dot org
@ 2009-04-29 15:12 ` pinskia at gcc dot gnu dot org
9 siblings, 0 replies; 11+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2009-04-29 15:12 UTC (permalink / raw)
To: gcc-bugs
--
pinskia at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|4.2.5 |4.3.3
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36194
^ permalink raw reply [flat|nested] 11+ messages in thread