From: Richard Henderson <rth@twiddle.net>
To: Aurelien Jarno <aurelien@aurel32.net>
Cc: qemu-devel@nongnu.org
Subject: Re: [Qemu-devel] [PATCH 5/8] tcg: Implement concat*_i64 with deposit_i64
Date: Mon, 24 Sep 2012 08:38:42 -0700 [thread overview]
Message-ID: <50607E82.8040904@twiddle.net> (raw)
In-Reply-To: <20120922195206.GA32408@ohm.aurel32.net>
On 2012-09-22 12:52, Aurelien Jarno wrote:
> On Fri, Sep 21, 2012 at 05:18:13PM -0700, Richard Henderson wrote:
>> For tcg_gen_concat_i32_i64 we only use deposit if the host supports it.
>> For tcg_gen_concat32_i64 even if the host does not, as we get identical
>> code before and after.
>>
>> Note that this relies on the ANDI -> EXTU patch for the identity claim.
>
> I don't really get why, andi is not used in this patch.
No, but tcg_gen_deposit uses andi in its fallback implementation.
r~
next prev parent reply other threads:[~2012-09-24 15:38 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-09-22 0:18 [Qemu-devel] [PATCH 0/8] Misc tcg improvements Richard Henderson
2012-09-22 0:18 ` [Qemu-devel] [PATCH 1/8] tcg: Adjust descriptions of *cond opcodes Richard Henderson
2012-09-22 10:16 ` malc
2012-09-22 19:51 ` Aurelien Jarno
2012-09-22 0:18 ` [Qemu-devel] [PATCH 2/8] tcg: Emit ANDI as EXTU for appropriate constants Richard Henderson
2012-09-22 19:52 ` Aurelien Jarno
2012-09-22 0:18 ` [Qemu-devel] [PATCH 3/8] tcg: Optimize initial inputs for ori_i64 Richard Henderson
2012-09-22 19:52 ` Aurelien Jarno
2012-09-22 0:18 ` [Qemu-devel] [PATCH 4/8] tcg: Emit XORI as NOT for appropriate constants Richard Henderson
2012-09-22 19:52 ` Aurelien Jarno
2012-09-22 0:18 ` [Qemu-devel] [PATCH 5/8] tcg: Implement concat*_i64 with deposit_i64 Richard Henderson
2012-09-22 19:52 ` Aurelien Jarno
2012-09-24 15:38 ` Richard Henderson [this message]
2012-09-22 0:18 ` [Qemu-devel] [PATCH 6/8] tcg: Add tcg_debug_assert Richard Henderson
2012-09-22 19:52 ` Aurelien Jarno
2012-09-22 0:18 ` [Qemu-devel] [PATCH 7/8] tcg: Sanity check deposit inputs Richard Henderson
2012-09-22 19:52 ` Aurelien Jarno
2012-09-22 0:18 ` [Qemu-devel] [PATCH 8/8] tcg: Sanity check goto_tb input Richard Henderson
2012-09-22 13:06 ` Max Filippov
2012-09-22 19:52 ` Aurelien Jarno
2012-09-25 22:48 ` [Qemu-devel] [PATCH 0/8] Misc tcg improvements Aurelien Jarno
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