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Re: [Qemu-devel] [RISU PATCH] arm.risu: Avoid VTRN with Vd == Vm
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From: |
Richard Henderson |
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Subject: |
Re: [Qemu-devel] [RISU PATCH] arm.risu: Avoid VTRN with Vd == Vm |
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Date: |
Thu, 13 Jun 2019 14:17:37 -0700 |
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User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.7.0 |
On 6/13/19 7:37 AM, Peter Maydell wrote:
> The AArch32 VTRN instruction is specified to give an UNKNOWN
> result if Vd and Vm are the same register; avoid generating
> this in risu output, as we already do for VUZP and VZIP.
>
> Signed-off-by: Peter Maydell <address@hidden>
> ---
> Alex: this pattern error is why we don't pass your
> testcases/aarch32-all/insn_VTRN__INC.risu.bin when compared
> with a real Cortex-A7. You probably want to update that.
>
> arm.risu | 3 ++-
> 1 file changed, 2 insertions(+), 1 deletion(-)
Reviewed-by: Richard Henderson <address@hidden>
r~