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* [Bug tree-optimization/114281] New: [14 Regression] Multiple 2-10% exec time regressions of 465.tonto since r14-9193-ga0b1798042d033
@ 2024-03-08 9:33 pheeck at gcc dot gnu.org
2024-03-08 10:08 ` [Bug tree-optimization/114281] " xry111 at gcc dot gnu.org
2024-03-08 10:17 ` pheeck at gcc dot gnu.org
0 siblings, 2 replies; 3+ messages in thread
From: pheeck at gcc dot gnu.org @ 2024-03-08 9:33 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114281
Bug ID: 114281
Summary: [14 Regression] Multiple 2-10% exec time regressions
of 465.tonto since r14-9193-ga0b1798042d033
Product: gcc
Version: 14.0
Status: UNCONFIRMED
Keywords: missed-optimization
Severity: normal
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: pheeck at gcc dot gnu.org
Blocks: 26163
Target Milestone: ---
Host: aarch64-gnu-linux, x86_64-linux
Target: aarch64-gnu-linux, x86_64-linux
Our LNT instance has detected that runtime of benchmark 465.tonto from the SPEC
2006 suite regressed on all of our machines (aarch64 ampere altra, intel
skylake, amd zen{2,3,4}) on most configurations by 2-10%.
One example: Zen4 -Ofast -flto -march=native (regressed by 10%)
https://lnt.opensuse.org/db_default/v4/SPEC/graph?plot.0=992.230.0
I've bisected the example configuration to r14-9193-ga0b1798042d033 (Richard
Biener: tree-optimization/114074 - CHREC multiplication and undefined
overflow).
There have been two other SPEC benchmarks regressions reported that also got
bisected to this commit -- pr114269, pr114238. I assume that all of these have
the same cause.
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=26163
[Bug 26163] [meta-bug] missed optimization in SPEC (2k17, 2k and 2k6 and 95)
^ permalink raw reply [flat|nested] 3+ messages in thread
* [Bug tree-optimization/114281] [14 Regression] Multiple 2-10% exec time regressions of 465.tonto since r14-9193-ga0b1798042d033
2024-03-08 9:33 [Bug tree-optimization/114281] New: [14 Regression] Multiple 2-10% exec time regressions of 465.tonto since r14-9193-ga0b1798042d033 pheeck at gcc dot gnu.org
@ 2024-03-08 10:08 ` xry111 at gcc dot gnu.org
2024-03-08 10:17 ` pheeck at gcc dot gnu.org
1 sibling, 0 replies; 3+ messages in thread
From: xry111 at gcc dot gnu.org @ 2024-03-08 10:08 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114281
Xi Ruoyao <xry111 at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |DUPLICATE
CC| |xry111 at gcc dot gnu.org
--- Comment #1 from Xi Ruoyao <xry111 at gcc dot gnu.org> ---
(In reply to Filip Kastl from comment #0)
> Our LNT instance has detected that runtime of benchmark 465.tonto from the
> SPEC 2006 suite regressed on all of our machines (aarch64 ampere altra,
> intel skylake, amd zen{2,3,4}) on most configurations by 2-10%.
>
> One example: Zen4 -Ofast -flto -march=native (regressed by 10%)
> https://lnt.opensuse.org/db_default/v4/SPEC/graph?plot.0=992.230.0
>
> I've bisected the example configuration to r14-9193-ga0b1798042d033 (Richard
> Biener: tree-optimization/114074 - CHREC multiplication and undefined
> overflow).
>
> There have been two other SPEC benchmarks regressions reported that also got
> bisected to this commit -- pr114269, pr114238. I assume that all of these
> have the same cause.
Please don't open more tickets unless you are assuming they do *not* have the
same cause.
*** This bug has been marked as a duplicate of bug 114269 ***
^ permalink raw reply [flat|nested] 3+ messages in thread
* [Bug tree-optimization/114281] [14 Regression] Multiple 2-10% exec time regressions of 465.tonto since r14-9193-ga0b1798042d033
2024-03-08 9:33 [Bug tree-optimization/114281] New: [14 Regression] Multiple 2-10% exec time regressions of 465.tonto since r14-9193-ga0b1798042d033 pheeck at gcc dot gnu.org
2024-03-08 10:08 ` [Bug tree-optimization/114281] " xry111 at gcc dot gnu.org
@ 2024-03-08 10:17 ` pheeck at gcc dot gnu.org
1 sibling, 0 replies; 3+ messages in thread
From: pheeck at gcc dot gnu.org @ 2024-03-08 10:17 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114281
--- Comment #2 from Filip Kastl <pheeck at gcc dot gnu.org> ---
> Please don't open more tickets unless you are assuming they do *not* have the same cause.
Alright, noted.
^ permalink raw reply [flat|nested] 3+ messages in thread
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2024-03-08 9:33 [Bug tree-optimization/114281] New: [14 Regression] Multiple 2-10% exec time regressions of 465.tonto since r14-9193-ga0b1798042d033 pheeck at gcc dot gnu.org
2024-03-08 10:08 ` [Bug tree-optimization/114281] " xry111 at gcc dot gnu.org
2024-03-08 10:17 ` pheeck at gcc dot gnu.org
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