From: Richard Henderson <richard.henderson@linaro.org>
To: Aleksandar Markovic <aleksandar.m.mail@gmail.com>
Cc: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>,
QEMU Developers <qemu-devel@nongnu.org>,
Aleksandar Markovic <amarkovic@wavecomp.com>,
Howard Spoelstra <hsp.cat7@gmail.com>
Subject: Re: [Qemu-devel] [PATCH v6 15/16] tcg/ppc: Update vector support to v2.07
Date: Tue, 2 Jul 2019 16:25:57 +0200 [thread overview]
Message-ID: <97e10fdb-8271-c2e1-7094-1246064d0bb8@linaro.org> (raw)
In-Reply-To: <CAL1e-=gWBkA+tWZJ9E7JNk1X_gwnhKbRfT_CtNr+o5uy+e-oDw@mail.gmail.com>
On 7/1/19 1:41 PM, Aleksandar Markovic wrote:
> If we go back to my example, it appears to me that doubleword
> integer max/min Altivec instruction do not depend on VSX in any
> way, or, at least, I did not find anything in Altivec docs that
> mentions it (I could be wrong).
You are correct, for the case of min/max -- and indeed all of the other
arithmetic added in this patch -- we do not need VSX.
However, the load/store instructions added by this patch do require VSX.
AFAIK, there is exactly one v2.07 core design, the power8.
It has both Altivec and VSX, so it's really only a technicality
to check both v2.07 + Altivec + VSX, but I do anyway. It does
not seem worthwhile to decompose these checks further.
r~
next prev parent reply other threads:[~2019-07-02 14:28 UTC|newest]
Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-06-29 13:00 [Qemu-devel] [PATCH v6 00/16] tcg/ppc: Add vector opcodes Richard Henderson
2019-06-29 13:00 ` [Qemu-devel] [PATCH v6 01/16] tcg/ppc: Introduce Altivec registers Richard Henderson
2019-06-29 13:00 ` [Qemu-devel] [PATCH v6 02/16] tcg/ppc: Introduce macro VX4() Richard Henderson
2019-06-29 13:00 ` [Qemu-devel] [PATCH v6 03/16] tcg/ppc: Introduce macros VRT(), VRA(), VRB(), VRC() Richard Henderson
2019-06-29 13:00 ` [Qemu-devel] [PATCH v6 04/16] tcg/ppc: Enable tcg backend vector compilation Richard Henderson
2019-06-30 9:46 ` Aleksandar Markovic
2019-06-30 10:48 ` Richard Henderson
2019-06-30 11:45 ` Aleksandar Markovic
2019-06-29 13:00 ` [Qemu-devel] [PATCH v6 05/16] tcg/ppc: Add support for load/store/logic/comparison Richard Henderson
2019-06-29 13:00 ` [Qemu-devel] [PATCH v6 06/16] tcg/ppc: Add support for vector maximum/minimum Richard Henderson
2019-06-29 13:00 ` [Qemu-devel] [PATCH v6 07/16] tcg/ppc: Add support for vector add/subtract Richard Henderson
2019-06-29 13:00 ` [Qemu-devel] [PATCH v6 08/16] tcg/ppc: Add support for vector saturated add/subtract Richard Henderson
2019-06-29 13:00 ` [Qemu-devel] [PATCH v6 09/16] tcg/ppc: Prepare case for vector multiply Richard Henderson
2019-06-30 9:52 ` Aleksandar Markovic
2019-06-30 10:49 ` Richard Henderson
2019-06-30 11:35 ` Aleksandar Markovic
2019-06-29 13:00 ` [Qemu-devel] [PATCH v6 10/16] tcg/ppc: Support vector shift by immediate Richard Henderson
2019-06-29 13:00 ` [Qemu-devel] [PATCH v6 11/16] tcg/ppc: Support vector multiply Richard Henderson
2019-06-29 13:00 ` [Qemu-devel] [PATCH v6 12/16] tcg/ppc: Support vector dup2 Richard Henderson
2019-06-29 13:00 ` [Qemu-devel] [PATCH v6 13/16] tcg/ppc: Enable Altivec detection Richard Henderson
2019-06-29 13:00 ` [Qemu-devel] [PATCH v6 14/16] tcg/ppc: Update vector support to v2.06 Richard Henderson
2019-06-29 13:00 ` [Qemu-devel] [PATCH v6 15/16] tcg/ppc: Update vector support to v2.07 Richard Henderson
2019-06-30 11:50 ` Aleksandar Markovic
2019-06-30 13:37 ` Aleksandar Markovic
2019-06-30 15:12 ` Richard Henderson
2019-07-01 3:57 ` Aleksandar Markovic
2019-07-01 10:29 ` Richard Henderson
2019-07-01 11:41 ` Aleksandar Markovic
2019-07-02 14:25 ` Richard Henderson [this message]
2019-07-10 10:52 ` Aleksandar Markovic
2019-06-29 13:00 ` [Qemu-devel] [PATCH v6 16/16] tcg/ppc: Update vector support to v3.00 Richard Henderson
2019-06-29 13:37 ` [Qemu-devel] [PATCH v6 00/16] tcg/ppc: Add vector opcodes no-reply
2019-06-30 17:58 ` Mark Cave-Ayland
2019-07-01 10:30 ` Richard Henderson
2019-07-01 18:34 ` Howard Spoelstra
2019-09-03 17:02 ` Mark Cave-Ayland
2019-09-03 17:37 ` Aleksandar Markovic
2019-09-03 18:32 ` Mark Cave-Ayland
2019-09-05 11:43 ` Aleksandar Markovic
2019-09-27 12:13 ` Aleksandar Markovic
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