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Re: [Qemu-devel] [PATCH v1 20/33] s390x/tcg: Implement VECTOR PACK
From: |
Richard Henderson |
Subject: |
Re: [Qemu-devel] [PATCH v1 20/33] s390x/tcg: Implement VECTOR PACK |
Date: |
Wed, 27 Feb 2019 15:11:56 -0800 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.4.0 |
On 2/26/19 3:39 AM, David Hildenbrand wrote:
> We cannot use gvex expansion as the element size of source and
> destination differs. So expand manually. Luckily, VECTOR PACK does not
> care about saturation or setting the CC, so it can be implemented
> without a helper. We have to watch out for overlapping source and
> destination registers and use a temporary register in this case.
>
> Signed-off-by: David Hildenbrand <address@hidden>
> ---
> target/s390x/insn-data.def | 2 ++
> target/s390x/translate_vx.inc.c | 41 +++++++++++++++++++++++++++++++++
> 2 files changed, 43 insertions(+)
Reviewed-by: Richard Henderson <address@hidden>
r~
- Re: [Qemu-devel] [PATCH v1 12/33] s390x/tcg: Implement VECTOR LOAD GR FROM VR ELEMENT, (continued)
- [Qemu-devel] [PATCH v1 14/33] s390x/tcg: Implement VECTOR LOAD MULTIPLE, David Hildenbrand, 2019/02/26
- [Qemu-devel] [PATCH v1 13/33] s390x/tcg: Implement VECTOR LOAD LOGICAL ELEMENT AND ZERO, David Hildenbrand, 2019/02/26
- [Qemu-devel] [PATCH v1 16/33] s390x/tcg: Implement VECTOR LOAD VR ELEMENT FROM GR, David Hildenbrand, 2019/02/26
- [Qemu-devel] [PATCH v1 20/33] s390x/tcg: Implement VECTOR PACK, David Hildenbrand, 2019/02/26
- Re: [Qemu-devel] [PATCH v1 20/33] s390x/tcg: Implement VECTOR PACK,
Richard Henderson <=
- [Qemu-devel] [PATCH v1 18/33] s390x/tcg: Implement VECTOR LOAD WITH LENGTH, David Hildenbrand, 2019/02/26
- [Qemu-devel] [PATCH v1 17/33] s390x/tcg: Implement VECTOR LOAD VR FROM GRS DISJOINT, David Hildenbrand, 2019/02/26
- [Qemu-devel] [PATCH v1 19/33] s390x/tcg: Implement VECTOR MERGE (HIGH|LOW), David Hildenbrand, 2019/02/26
- [Qemu-devel] [PATCH v1 15/33] s390x/tcg: Implement VECTOR LOAD TO BLOCK BOUNDARY, David Hildenbrand, 2019/02/26