From: Richard Henderson <rth@twiddle.net>
To: "Alex Bennée" <alex.bennee@linaro.org>
Cc: qemu-devel@nongnu.org, aurelien@aurel32.net
Subject: Re: [Qemu-devel] [PATCH 08/10] tcg: Save flags and computed sizemask in TCGHelperInfo
Date: Tue, 13 May 2014 06:54:59 -0700 [thread overview]
Message-ID: <53722433.3060803@twiddle.net> (raw)
In-Reply-To: <87y4y66msq.fsf@linaro.org>
On 05/13/2014 02:38 AM, Alex Bennée wrote:
>> + info = g_hash_table_lookup(s->helpers, (gpointer)func);
>> > + assert(info != NULL);
>> > + assert(info->sizemask == sizemask);
> I assume g_assert vs assert is purely cosmetic? QEMU seems inconsistent
> at best about this :-/
Yes indeed. It doesn't help that g_assert is stupid and doesn't evaluate its
argument when assertions are disabled, so that you can get unused variable
warnings.
The best sort of assert is as we do for tcg_debug_assert, where we invoke
__builtin_unreachable when not aborting, which gives the compiler optimization
info about the expression.
I'm not sure how best to clean all this up in qemu, but I'm pretty sure that
more use of glib isn't it.
r~
next prev parent reply other threads:[~2014-05-13 13:55 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-05-12 23:46 [Qemu-devel] [PATCH 00/10] tcg cleanup and optimization Richard Henderson
2014-05-12 23:46 ` [Qemu-devel] [PATCH 01/10] tcg: Optimize brcond2 and setcond2 ne/eq Richard Henderson
2014-05-12 23:46 ` [Qemu-devel] [PATCH 02/10] tcg: Invert the inclusion of helper.h Richard Henderson
2014-05-13 9:10 ` Alex Bennée
2014-05-12 23:46 ` [Qemu-devel] [PATCH 03/10] tcg: Push tcg-runtime routines into exec/helper-* Richard Henderson
2014-05-13 9:20 ` Alex Bennée
2014-05-13 13:39 ` Richard Henderson
2014-05-12 23:46 ` [Qemu-devel] [PATCH 04/10] tcg: Use helper-gen.h in tcg-op.h Richard Henderson
2014-05-13 9:34 ` Alex Bennée
2014-05-13 13:44 ` Richard Henderson
2014-05-12 23:46 ` [Qemu-devel] [PATCH 05/10] tcg: Inline tcg_gen_helperN Richard Henderson
2014-05-13 9:34 ` Alex Bennée
2014-05-12 23:47 ` [Qemu-devel] [PATCH 06/10] tcg: Move side effects out of dh_sizemask Richard Henderson
2014-05-12 23:47 ` [Qemu-devel] [PATCH 07/10] tcg: Register the helper info struct rather than the name Richard Henderson
2014-05-13 9:36 ` Alex Bennée
2014-05-12 23:47 ` [Qemu-devel] [PATCH 08/10] tcg: Save flags and computed sizemask in TCGHelperInfo Richard Henderson
2014-05-13 9:38 ` Alex Bennée
2014-05-13 13:54 ` Richard Henderson [this message]
2014-05-12 23:47 ` [Qemu-devel] [PATCH 09/10] tcg: Remove sizemask and flags arguments to tcg_gen_callN Richard Henderson
2014-05-12 23:47 ` [Qemu-devel] [PATCH 10/10] tcg: Move size effects out of dh_arg Richard Henderson
2014-05-13 9:42 ` Alex Bennée
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