From: Stefan Monnier <monnier@iro.umontreal.ca>
To: Paul Eggert <eggert@cs.ucla.edu>
Cc: Alan Mackenzie <acm@muc.de>, Eli Zaretskii <eliz@gnu.org>,
emacs-devel@gnu.org
Subject: Re: Excessive use of `eassert`
Date: Sun, 21 Jan 2024 10:54:24 -0500 [thread overview]
Message-ID: <jwvplxuznx0.fsf-monnier+emacs@gnu.org> (raw)
In-Reply-To: <811d5f03-fad4-47e1-b3fd-2f45229a5ee1@cs.ucla.edu> (Paul Eggert's message of "Sat, 20 Jan 2024 17:41:57 -0800")
> I looked into this a bit and installed the attached patches which should
> speed things slightly even with a default build.
Nice.
> The main goal was to speed up debugging builds, though.
I still get:
(gdb) x/12i init_window
0xbbabc <init_window>: push %ebx
0xbbabd <init_window+1>: sub $0x18,%esp
0xbbac0 <init_window+4>: call 0x235b0 <__x86.get_pc_thunk.bx>
0xbbac5 <init_window+9>: add $0x34652f,%ebx
0xbbacb <init_window+15>: lea 0xc(%esp),%eax
0xbbacf <init_window+19>: lea 0x383d4c(%ebx),%edx
0xbbad5 <init_window+25>: call 0xa2d57 <make_lisp_symbol>
0xbbada <init_window+30>: mov 0xc(%esp),%eax
0xbbade <init_window+34>: mov %eax,0x334230(%ebx)
0xbbae4 <init_window+40>: add $0x18,%esp
0xbbae7 <init_window+43>: pop %ebx
0xbbae8 <init_window+44>: ret
(gdb)
whereas with my patch this goes down to:
(gdb) x/4i init_window
0xb1715 <init_window>: call 0x2ff9e <__x86.get_pc_thunk.ax>
0xb171a <init_window+5>: add $0x31c8da,%eax
0xb171f <init_window+10>: movl $0x0,0xe9d0(%eax)
0xb1729 <init_window+20>: ret
(gdb)
🙁
Stefan
next prev parent reply other threads:[~2024-01-21 15:54 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-01-18 22:35 Excessive use of `eassert` Stefan Monnier
2024-01-19 7:04 ` Eli Zaretskii
2024-01-19 13:01 ` Stefan Monnier
2024-01-19 15:02 ` Eli Zaretskii
2024-01-19 15:50 ` Stefan Monnier
2024-01-19 16:23 ` Eli Zaretskii
2024-01-19 17:44 ` Stefan Monnier
2024-01-19 19:42 ` Alan Mackenzie
2024-01-19 19:56 ` Eli Zaretskii
2024-01-21 1:41 ` Paul Eggert
2024-01-21 9:57 ` Eli Zaretskii
2024-01-21 20:35 ` Paul Eggert
2024-01-21 10:59 ` Alan Mackenzie
2024-01-22 5:19 ` Paul Eggert
2024-01-22 13:07 ` Stefan Monnier
2024-01-22 14:37 ` Alan Mackenzie
2024-01-23 7:51 ` Paul Eggert
2024-01-23 11:42 ` Alan Mackenzie
2024-01-24 1:04 ` Paul Eggert
2024-01-24 15:09 ` Alan Mackenzie
2024-01-26 8:06 ` Paul Eggert
2024-01-21 15:54 ` Stefan Monnier [this message]
2024-01-22 4:12 ` Paul Eggert
2024-01-22 13:20 ` Stefan Monnier
2024-01-23 8:15 ` Paul Eggert
2024-01-23 17:11 ` Stefan Monnier
2024-01-24 7:45 ` Paul Eggert
2024-01-23 18:16 ` Eli Zaretskii
2024-01-23 19:50 ` Stefan Monnier
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