Re: [Qemu-devel] [PATCH v2 07/29] tcg: Support cross-class moves without instruction support

[Richard Henderson]

On 5/1/19 10:34 AM, Alex Bennée wrote:
> 
> Richard Henderson <address@hidden> writes:
> 
>> PowerPC Altivec does not support direct moves between vector registers
>> and general registers.  So when tcg_out_mov fails, we can use the
>> backing memory for the temporary to perform the move.
> 
> I couldn't see where tcg_out_mov fails in this way for ppc, it is still
> abort or pass:
> 
> static bool tcg_out_mov(TCGContext *s, TCGType type, TCGReg ret, TCGReg arg)
> {
>     tcg_debug_assert(TCG_TARGET_REG_BITS == 64 || type == TCG_TYPE_I32);
>     if (ret != arg) {
>         tcg_out32(s, OR | SAB(arg, ret, arg));
>     }
>     return true;
> }
> 
> did a patch get missed somewhere?

No, it's in another patch set that depends on this --
adding host vector support for tcg/ppc/.


r~