* problem with lto
@ 2024-04-23 14:53 王淳洋
2024-04-24 8:48 ` Arsen Arsenović
0 siblings, 1 reply; 2+ messages in thread
From: 王淳洋 @ 2024-04-23 14:53 UTC (permalink / raw)
To: gcc-help
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Hello, I am using -flto when building nginx, but got lower benchmark
scores, about -1%~-2%, which makes me confused.
I am wondering if there are other options to be combined with -flto, to
make the best optimization.
By the way, will lto acts on the process of merging .o to generate .a .
Thanks.
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: problem with lto
2024-04-23 14:53 problem with lto 王淳洋
@ 2024-04-24 8:48 ` Arsen Arsenović
0 siblings, 0 replies; 2+ messages in thread
From: Arsen Arsenović @ 2024-04-24 8:48 UTC (permalink / raw)
To: 王淳洋 via Gcc-help; +Cc: 王淳洋
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Hi,
王淳洋 via Gcc-help <gcc-help@gcc.gnu.org> writes:
> Hello, I am using -flto when building nginx, but got lower benchmark
> scores, about -1%~-2%, which makes me confused.
That's not impossible, as benchmark results can be influenced by a
myriad of factors.
> I am wondering if there are other options to be combined with -flto, to
> make the best optimization.
The usual optimization flags. And, as usual, there's no silver bullet.
> By the way, will lto acts on the process of merging .o to generate .a
> .
No - only at time of use of the '.a'.
--
Arsen Arsenović
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