Re: [PATCH] tests/tcg/ppc64le: remove INT128 requirement to run non_signalling_xscv

[Richard Henderson]

On 12/20/21 4:18 AM, Matheus K. Ferst wrote:
> I'd like to avoid mtvsrdd/mfvsrld because they were introduced in PowerISA v3.0, and 
> xscvspdpn/xscvdpspn are from v2.07.

Fair enough, I suppose.

> How about
>
> asm("mtvsrd 0, %2\n\t"
>      "mtvsrd 1, %3\n\t"
>      "xxmrghd 0, 0, 1\n\t"
>      INSN " 0, 0\n\t"
>      "mfvsrd %0, 0\n\t"
>      "xxswapd 0, 0\n\t"
>      "mfvsrd %1, 0\n\t"
>      : "=r" (th), "=r" (tl)
>      : "r" (bh), "r" (bl)
>      : "vs0", "vs1");
>
> ?

Looks good.


r~