Re: [PATCH 2/2] target/arm: Use tcg_gen_gvec_5_ptr for sve FMLA/FCMLA

[Richard Henderson]

On 2/12/20 2:50 AM, Alex Bennée wrote:
> 
> Richard Henderson <address@hidden> writes:
> 
>> Now that we can pass 7 parameters, do not encode register
>> operands within simd_data.
> 
> What defines the upper limit? Is it the ABI of the backend or just the
> efficiency of implementing the prologue for the call?

The current upper limit is from the lifetime tracking data.  Which gives us 14
arguments within the bits of the uint16_t.  Which gives us 7 uint64_t arguments
on a 32-bit host.


r~