* [Bug middle-end/33699] [4.3/4.4/4.5/4.6 regression] missing optimization on const addr area store
[not found] <bug-33699-4@http.gcc.gnu.org/bugzilla/>
@ 2011-03-04 12:13 ` rguenth at gcc dot gnu.org
2011-03-04 15:33 ` matz at gcc dot gnu.org
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From: rguenth at gcc dot gnu.org @ 2011-03-04 12:13 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33699
Richard Guenther <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target|mips*-* powerpc*-*-* |mips*-* powerpc*-*-*
| |x86_64-*-*
Last reconfirmed|2010-03-12 23:56:39 |2011-03-04 23:56:39
Known to fail| |4.6.0
--- Comment #11 from Richard Guenther <rguenth at gcc dot gnu.org> 2011-03-04 12:12:27 UTC ---
Even on x86 it's smaller to not replicate 0xDEAD and to use
offset addressing, like
0000000000000000 <f>:
0: b8 d0 fe 00 00 mov $0xfed0,%eax
5: bb ad de 00 00 mov $0xdead,%ebx
a: 89 18 mov %ebx,(%rax)
c: 89 58 08 mov %ebx,0x8(%rax)
f: 89 58 10 mov %ebx,0x10(%rax)
12: 89 58 18 mov %ebx,0x18(%rax)
15: c3 retq
instead of the generated
0: c7 04 25 d0 fe 00 00 movl $0xdead,0xfed0
7: ad de 00 00
b: c7 04 25 d8 fe 00 00 movl $0xdead,0xfed8
12: ad de 00 00
16: c7 04 25 e0 fe 00 00 movl $0xdead,0xfee0
1d: ad de 00 00
21: c7 04 25 e8 fe 00 00 movl $0xdead,0xfee8
28: ad de 00 00
2c: c3 retq
^ permalink raw reply [flat|nested] 18+ messages in thread* [Bug middle-end/33699] [4.3/4.4/4.5/4.6 regression] missing optimization on const addr area store
[not found] <bug-33699-4@http.gcc.gnu.org/bugzilla/>
2011-03-04 12:13 ` [Bug middle-end/33699] [4.3/4.4/4.5/4.6 regression] missing optimization on const addr area store rguenth at gcc dot gnu.org
@ 2011-03-04 15:33 ` matz at gcc dot gnu.org
2011-06-27 14:58 ` [Bug middle-end/33699] [4.3/4.4/4.5/4.6/4.7 " rguenth at gcc dot gnu.org
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From: matz at gcc dot gnu.org @ 2011-03-04 15:33 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33699
Michael Matz <matz at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |matz at gcc dot gnu.org
--- Comment #12 from Michael Matz <matz at gcc dot gnu.org> 2011-03-04 15:33:04 UTC ---
Smaller perhaps, but it uses two registers, where it originally used none.
For x86 that's the better tradeoff.
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[not found] <bug-33699-4@http.gcc.gnu.org/bugzilla/>
2011-03-04 12:13 ` [Bug middle-end/33699] [4.3/4.4/4.5/4.6 regression] missing optimization on const addr area store rguenth at gcc dot gnu.org
2011-03-04 15:33 ` matz at gcc dot gnu.org
@ 2011-06-27 14:58 ` rguenth at gcc dot gnu.org
2012-03-13 15:07 ` [Bug middle-end/33699] [4.5/4.6/4.7/4.8 " jakub at gcc dot gnu.org
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From: rguenth at gcc dot gnu.org @ 2011-06-27 14:58 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33699
Richard Guenther <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|4.3.6 |4.4.7
--- Comment #13 from Richard Guenther <rguenth at gcc dot gnu.org> 2011-06-27 12:14:26 UTC ---
4.3 branch is being closed, moving to 4.4.7 target.
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[not found] <bug-33699-4@http.gcc.gnu.org/bugzilla/>
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2011-06-27 14:58 ` [Bug middle-end/33699] [4.3/4.4/4.5/4.6/4.7 " rguenth at gcc dot gnu.org
@ 2012-03-13 15:07 ` jakub at gcc dot gnu.org
2012-07-02 11:49 ` rguenth at gcc dot gnu.org
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From: jakub at gcc dot gnu.org @ 2012-03-13 15:07 UTC (permalink / raw)
To: gcc-bugs
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|4.4.7 |4.5.4
--- Comment #14 from Jakub Jelinek <jakub at gcc dot gnu.org> 2012-03-13 12:47:52 UTC ---
4.4 branch is being closed, moving to 4.5.4 target.
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2012-03-13 15:07 ` [Bug middle-end/33699] [4.5/4.6/4.7/4.8 " jakub at gcc dot gnu.org
@ 2012-07-02 11:49 ` rguenth at gcc dot gnu.org
2012-12-31 10:09 ` [Bug middle-end/33699] [4.6/4.7/4.8 " pinskia at gcc dot gnu.org
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From: rguenth at gcc dot gnu.org @ 2012-07-02 11:49 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33699
Richard Guenther <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|4.5.4 |4.6.4
--- Comment #15 from Richard Guenther <rguenth at gcc dot gnu.org> 2012-07-02 11:48:47 UTC ---
The 4.5 branch is being closed, adjusting target milestone.
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[not found] <bug-33699-4@http.gcc.gnu.org/bugzilla/>
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2012-07-02 11:49 ` rguenth at gcc dot gnu.org
@ 2012-12-31 10:09 ` pinskia at gcc dot gnu.org
2013-04-12 15:18 ` [Bug middle-end/33699] [4.7/4.8/4.9 " jakub at gcc dot gnu.org
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From: pinskia at gcc dot gnu.org @ 2012-12-31 10:09 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33699
--- Comment #16 from Andrew Pinski <pinskia at gcc dot gnu.org> 2012-12-31 10:09:07 UTC ---
(In reply to comment #12)
> Smaller perhaps, but it uses two registers, where it originally used none.
> For x86 that's the better tradeoff.
Except for the obvious -Os.
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[not found] <bug-33699-4@http.gcc.gnu.org/bugzilla/>
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2012-12-31 10:09 ` [Bug middle-end/33699] [4.6/4.7/4.8 " pinskia at gcc dot gnu.org
@ 2013-04-12 15:18 ` jakub at gcc dot gnu.org
2014-06-12 13:49 ` [Bug middle-end/33699] [4.7/4.8/4.9/4.10 " rguenth at gcc dot gnu.org
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From: jakub at gcc dot gnu.org @ 2013-04-12 15:18 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33699
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|4.6.4 |4.7.4
--- Comment #17 from Jakub Jelinek <jakub at gcc dot gnu.org> 2013-04-12 15:17:00 UTC ---
GCC 4.6.4 has been released and the branch has been closed.
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2013-04-12 15:18 ` [Bug middle-end/33699] [4.7/4.8/4.9 " jakub at gcc dot gnu.org
@ 2014-06-12 13:49 ` rguenth at gcc dot gnu.org
2014-12-19 13:43 ` [Bug middle-end/33699] [4.8/4.9/5 " jakub at gcc dot gnu.org
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From: rguenth at gcc dot gnu.org @ 2014-06-12 13:49 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=33699
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|4.7.4 |4.8.4
--- Comment #18 from Richard Biener <rguenth at gcc dot gnu.org> ---
The 4.7 branch is being closed, moving target milestone to 4.8.4.
^ permalink raw reply [flat|nested] 18+ messages in thread* [Bug middle-end/33699] [4.8/4.9/5 regression] missing optimization on const addr area store
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2014-06-12 13:49 ` [Bug middle-end/33699] [4.7/4.8/4.9/4.10 " rguenth at gcc dot gnu.org
@ 2014-12-19 13:43 ` jakub at gcc dot gnu.org
2015-06-23 8:26 ` [Bug middle-end/33699] [4.8/4.9/5/6 " rguenth at gcc dot gnu.org
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From: jakub at gcc dot gnu.org @ 2014-12-19 13:43 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=33699
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|4.8.4 |4.8.5
--- Comment #19 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 4.8.4 has been released.
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[not found] <bug-33699-4@http.gcc.gnu.org/bugzilla/>
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2014-12-19 13:43 ` [Bug middle-end/33699] [4.8/4.9/5 " jakub at gcc dot gnu.org
@ 2015-06-23 8:26 ` rguenth at gcc dot gnu.org
2015-06-26 20:17 ` [Bug middle-end/33699] [4.9/5/6 " jakub at gcc dot gnu.org
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From: rguenth at gcc dot gnu.org @ 2015-06-23 8:26 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=33699
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|4.8.5 |4.9.3
--- Comment #20 from Richard Biener <rguenth at gcc dot gnu.org> ---
The gcc-4_8-branch is being closed, re-targeting regressions to 4.9.3.
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2015-06-23 8:26 ` [Bug middle-end/33699] [4.8/4.9/5/6 " rguenth at gcc dot gnu.org
@ 2015-06-26 20:17 ` jakub at gcc dot gnu.org
2015-06-26 20:38 ` jakub at gcc dot gnu.org
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From: jakub at gcc dot gnu.org @ 2015-06-26 20:17 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=33699
--- Comment #21 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 4.9.3 has been released.
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2015-06-26 20:17 ` [Bug middle-end/33699] [4.9/5/6 " jakub at gcc dot gnu.org
@ 2015-06-26 20:38 ` jakub at gcc dot gnu.org
2021-05-14 9:45 ` [Bug middle-end/33699] [9/10/11/12 " jakub at gcc dot gnu.org
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From: jakub at gcc dot gnu.org @ 2015-06-26 20:38 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=33699
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|4.9.3 |4.9.4
^ permalink raw reply [flat|nested] 18+ messages in thread* [Bug middle-end/33699] [9/10/11/12 regression] missing optimization on const addr area store
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@ 2021-05-14 9:45 ` jakub at gcc dot gnu.org
2021-06-01 8:04 ` rguenth at gcc dot gnu.org
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From: jakub at gcc dot gnu.org @ 2021-05-14 9:45 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=33699
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|8.5 |9.4
--- Comment #30 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8 branch is being closed.
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@ 2021-06-01 8:04 ` rguenth at gcc dot gnu.org
2021-07-08 17:16 ` meissner at gcc dot gnu.org
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From: rguenth at gcc dot gnu.org @ 2021-06-01 8:04 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=33699
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|9.4 |9.5
--- Comment #31 from Richard Biener <rguenth at gcc dot gnu.org> ---
GCC 9.4 is being released, retargeting bugs to GCC 9.5.
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2021-06-01 8:04 ` rguenth at gcc dot gnu.org
@ 2021-07-08 17:16 ` meissner at gcc dot gnu.org
2022-05-27 9:33 ` [Bug middle-end/33699] [10/11/12/13 " rguenth at gcc dot gnu.org
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From: meissner at gcc dot gnu.org @ 2021-07-08 17:16 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=33699
Michael Meissner <meissner at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |meissner at gcc dot gnu.org
--- Comment #32 from Michael Meissner <meissner at gcc dot gnu.org> ---
I looked at adding the following powerpc patch that was proposed in March,
2021:
https://gcc.gnu.org/pipermail/gcc-patches/2021-March/566744.html
There are two parts to the patch, that are sort of unrelated.
The first part is to add minimum and maximum section anchor offset values and
use -fsection anchors. I ran a spec 2017 benchmark on a pre-production power10
system, comparing my normal run times to run times with -fsection-anchors and
setting the minimum/maximum section anchor offsets.
Two benchmarks improved and two benchmarks regressed:
xalancbmk_r: 1.75% regression
cactuBSSN_r: 4.24% improvement
blender_r: 1.92% regression
roms_r: 1.05% improvement
I then built spec 2017 with just the part of setting const_anchor, but not the
section anchor minimum/maximum offsets. Eight benchmarks did not build due to
assertion failures in cse.c:
gcc_r
exchange2_r
cactuBSSN_r
wrf_r
blender_r
cam4_r
fotonik3d_r
roms_r
If I specify the section anchor minimum/maximum offsets, add -fsection-anchors,
and set the const_anchor, all 23 INT+FP benchmarks build, but WRF_R does not
run correctly. So without more debugging, I don't recommend setting
const_anchor. It is probably useful to set the minimum/maximum section anchor
offsets in case people use -fsection-anchors.
As an aside, if we wanted to accept using constant addresses in the PowerPC, we
would need to recognize a constant address as being legitimate. This may be
useful in some embedded environments where you have devices at certain memory
locations. But somebody would need to add the support.
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` (14 preceding siblings ...)
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@ 2022-05-27 9:33 ` rguenth at gcc dot gnu.org
2022-06-28 10:29 ` jakub at gcc dot gnu.org
2023-07-07 10:28 ` [Bug middle-end/33699] [11/12/13/14 " rguenth at gcc dot gnu.org
17 siblings, 0 replies; 18+ messages in thread
From: rguenth at gcc dot gnu.org @ 2022-05-27 9:33 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=33699
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|9.5 |10.4
--- Comment #33 from Richard Biener <rguenth at gcc dot gnu.org> ---
GCC 9 branch is being closed
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2022-05-27 9:33 ` [Bug middle-end/33699] [10/11/12/13 " rguenth at gcc dot gnu.org
@ 2022-06-28 10:29 ` jakub at gcc dot gnu.org
2023-07-07 10:28 ` [Bug middle-end/33699] [11/12/13/14 " rguenth at gcc dot gnu.org
17 siblings, 0 replies; 18+ messages in thread
From: jakub at gcc dot gnu.org @ 2022-06-28 10:29 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=33699
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|10.4 |10.5
--- Comment #34 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 10.4 is being released, retargeting bugs to GCC 10.5.
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2022-06-28 10:29 ` jakub at gcc dot gnu.org
@ 2023-07-07 10:28 ` rguenth at gcc dot gnu.org
17 siblings, 0 replies; 18+ messages in thread
From: rguenth at gcc dot gnu.org @ 2023-07-07 10:28 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=33699
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|10.5 |11.5
--- Comment #35 from Richard Biener <rguenth at gcc dot gnu.org> ---
GCC 10 branch is being closed.
^ permalink raw reply [flat|nested] 18+ messages in thread