Re: [Qemu-devel] [PATCH v3 38/39] tcg/arm: Use LDRD to load tlb mask+table

[Richard Henderson]

On 5/10/19 2:08 PM, Alistair Francis wrote:
>> +        if (use_armv6_instructions && TARGET_LONG_BITS == 64) {
>> +            tcg_out_ldrd_8(s, COND_AL, TCG_REG_R2, TCG_REG_R1, cmp_off);
...
> 
> This is complex and I'm probably misunderstanding something but isn't
> it possible for TCG_REG_R3 to not be set if use_armv6_instructions is
> true and TARGET_LONG_BITS is 64?

No, the LDRD instruction loads data into both R2 and R2+1 = R3.


r~