From: Pedro Alves <palves@redhat.com>
To: Simon Marchi <simark@simark.ca>,
Bernd Edlinger <bernd.edlinger@hotmail.de>,
"gdb-patches@sourceware.org" <gdb-patches@sourceware.org>
Subject: Re: [PATCHv2] Make "skip" work on inline frames
Date: Thu, 31 Oct 2019 18:00:00 -0000 [thread overview]
Message-ID: <d5576d83-8329-c03d-ed0f-be0d9a884f9a@redhat.com> (raw)
In-Reply-To: <f12850fb-6eee-ea5c-adb8-684ca7644c7b@simark.ca>
On 10/31/19 4:53 PM, Simon Marchi wrote:
> On 2019-10-31 12:42 p.m., Pedro Alves wrote:
>> On 10/30/19 9:56 PM, Bernd Edlinger wrote:
>>> +if { [prepare_for_testing "failed to prepare" "skip2" \
>>> + {skip2.c skip1.c } \
>>> + {debug nowarnings optimize=-O2}] } {
>>
>> Instead of -O2, could you make this use -O0 (the default),
>> and then use attribute((always_inline)) to force inlining?
>> We do that in some tests. E.g., gdb.opt/inline-locals.c.
>
> I think that's a good suggestion, but just be aware that there used to be
> some problems with always_inline, e.g.:
I don't think always_inline changes anything in the debug info special,
it just tells the compiler to inline the function even at -O0, which is
what we're after.
>
> https://sourceware.org/bugzilla/show_bug.cgi?id=13263
This one seems to be about attribute((artificial)), and the desire
to not step into such functions automatically:
"Given that I marked the function always_inline and artificial, I
was expecting not to step into its body."
> https://sourceware.org/bugzilla/show_bug.cgi?id=12429
>
This one seems like a generic inlining issue.
> I'm not sure if those are still valid. If they are, it might be more difficult
> that expected to use always_inline.
I don't think always_inline is anything special compared to inlining
because of -O2.
Thanks,
Pedro Alves
next prev parent reply other threads:[~2019-10-31 18:00 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-10-18 12:52 [PATCH] " Bernd Edlinger
2019-10-19 4:40 ` Bernd Edlinger
2019-10-20 6:48 ` [PATCHv2] " Bernd Edlinger
2019-10-26 8:06 ` [PING] " Bernd Edlinger
2019-10-27 1:52 ` Simon Marchi
2019-10-27 2:18 ` Simon Marchi
2019-10-30 21:56 ` Bernd Edlinger
2019-10-31 16:42 ` Pedro Alves
2019-10-31 16:53 ` Simon Marchi
2019-10-31 18:00 ` Pedro Alves [this message]
2019-10-31 19:19 ` [PATCHv3] " Bernd Edlinger
2019-11-24 11:22 ` [PATCHv4] " Bernd Edlinger
2019-12-01 20:46 ` [PING] " Bernd Edlinger
2019-12-02 2:34 ` Simon Marchi
2019-12-02 16:47 ` [PATCHv5] " Bernd Edlinger
2019-12-03 4:22 ` Simon Marchi
2019-12-14 13:55 ` [PING] " Bernd Edlinger
2019-12-15 0:46 ` Simon Marchi
2019-12-15 11:25 ` [PATCHv6] " Bernd Edlinger
2019-12-15 13:12 ` Simon Marchi
2019-12-15 18:18 ` Bernd Edlinger
2019-12-17 2:01 ` Simon Marchi
2019-12-17 13:00 ` Bernd Edlinger
2019-10-30 20:06 ` [PATCHv2] " Bernd Edlinger
2019-10-30 20:18 ` Simon Marchi
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