From: Richard Henderson <rth@twiddle.net>
To: Blue Swirl <blauwirbel@gmail.com>
Cc: qemu-devel@nongnu.org
Subject: Re: [Qemu-devel] [PATCH 23/23] target-sparc: Optimize conditionals using SUBCC
Date: Sun, 07 Oct 2012 12:16:52 -0700 [thread overview]
Message-ID: <5071D524.5080005@twiddle.net> (raw)
In-Reply-To: <CAAu8pHunRpq0BTZ4HfJvYo5GoKvasBOFdyd2mYhA17w52EjNtQ@mail.gmail.com>
On 10/07/2012 11:48 AM, Blue Swirl wrote:
> This is not yet optimal, we could do the same trick as is done for x86
> for cmp/jcc case (target-i386/translate.c:889), but it's still an
> improvement so I applied it with others.
It's trickier with sparc, because of the (exceedingly rare) conditional
branch in branch delay slot case. I've yet to come up with a plan to
handle that which is better than the existing cpu_cond global variable.
(Which we now at least initialize with setcond.)
r~
next prev parent reply other threads:[~2012-10-07 19:16 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-10-05 23:54 [Qemu-devel] [PATCH 00/23] target-sparc comparison improvements Richard Henderson
2012-10-05 23:54 ` [Qemu-devel] [PATCH 01/23] target-sparc: Tidy cpu_dump_state Richard Henderson
2012-10-05 23:54 ` [Qemu-devel] [PATCH 02/23] target-sparc: Make CPU_LOG_INT useful by default Richard Henderson
2012-10-05 23:54 ` [Qemu-devel] [PATCH 03/23] target-sparc: Tidy do_branch interfaces Richard Henderson
2012-10-05 23:54 ` [Qemu-devel] [PATCH 04/23] target-sparc: Tidy flush_cond interface Richard Henderson
2012-10-05 23:54 ` [Qemu-devel] [PATCH 05/23] target-sparc: Tidy gen_trap_ifnofpu interface Richard Henderson
2012-10-05 23:54 ` [Qemu-devel] [PATCH 06/23] target-sparc: Tidy save_state interface Richard Henderson
2012-10-05 23:54 ` [Qemu-devel] [PATCH 07/23] target-sparc: Tidy gen_mov_pc_npc interface Richard Henderson
2012-10-05 23:54 ` [Qemu-devel] [PATCH 08/23] target-sparc: Tidy save_npc interface Richard Henderson
2012-10-05 23:54 ` [Qemu-devel] [PATCH 09/23] target-sparc: Tidy gen_generic_branch interface Richard Henderson
2012-10-05 23:54 ` [Qemu-devel] [PATCH 10/23] target-sparc: Introduce DisasCompare and functions to generate it Richard Henderson
2012-10-05 23:54 ` [Qemu-devel] [PATCH 11/23] target-sparc: Use DisasCompare in Tcc Richard Henderson
2012-10-05 23:54 ` [Qemu-devel] [PATCH 12/23] target-sparc: Use DisasCompare and movcond in FMOVR, FMOVCC Richard Henderson
2012-10-05 23:55 ` [Qemu-devel] [PATCH 13/23] target-sparc: Use DisasCompare and movcond in MOVCC Richard Henderson
2012-10-05 23:55 ` [Qemu-devel] [PATCH 14/23] target-sparc: Use DisasCompare and movcond in MOVR Richard Henderson
2012-10-05 23:55 ` [Qemu-devel] [PATCH 15/23] target-sparc: Use movcond in gen_generic_branch Richard Henderson
2012-10-05 23:55 ` [Qemu-devel] [PATCH 16/23] target-sparc: Move sdivx and udivx out of line Richard Henderson
2012-10-05 23:55 ` [Qemu-devel] [PATCH 17/23] target-sparc: Tidy Tcc Richard Henderson
2012-10-05 23:55 ` [Qemu-devel] [PATCH 18/23] target-sparc: Move taddcctv and tsubcctv out of line Richard Henderson
2012-10-05 23:55 ` [Qemu-devel] [PATCH 19/23] target-sparc: Use movcond in mulscc Richard Henderson
2012-10-05 23:55 ` [Qemu-devel] [PATCH 20/23] target-sparc: Use movcond for FMOV*R Richard Henderson
2012-10-05 23:55 ` [Qemu-devel] [PATCH 21/23] target-sparc: Cleanup "global" temporary allocation Richard Henderson
2012-10-05 23:55 ` [Qemu-devel] [PATCH 22/23] target-sparc: Fall through from not-taken trap Richard Henderson
2012-10-05 23:55 ` [Qemu-devel] [PATCH 23/23] target-sparc: Optimize conditionals using SUBCC Richard Henderson
2012-10-07 18:48 ` Blue Swirl
2012-10-07 19:16 ` Richard Henderson [this message]
2012-10-07 22:40 ` Aurelien Jarno
2012-10-07 18:44 ` [Qemu-devel] [PATCH 00/23] target-sparc comparison improvements Blue Swirl
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