On 6/19/19 1:03 PM, Stefan Brankovic wrote:
> Optimization of altivec instructions vsl and vsr(Vector Shift Left/Rigt).
> Perform shift operation (left and right respectively) on 128 bit value of
> register vA by value specified in bits 125-127 of register vB. Lowest 3
> bits in each byte element o
Optimization of altivec instructions vsl and vsr(Vector Shift Left/Rigt).
Perform shift operation (left and right respectively) on 128 bit value of
register vA by value specified in bits 125-127 of register vB. Lowest 3
bits in each byte element of register vB must be identical or result is
undefin
On 6.6.19. 19:03, Richard Henderson wrote:
On 6/6/19 5:15 AM, Stefan Brankovic wrote:
+tcg_gen_subi_i64(tmp, sh, 64);
+tcg_gen_neg_i64(tmp, tmp);
Better as
tcg_gen_subfi_i64(tmp, 64, sh);
I was aware there must be way of doing it in a single tcg invocation,
but couldn't find r
On 6/6/19 5:15 AM, Stefan Brankovic wrote:
> +tcg_gen_subi_i64(tmp, sh, 64);
> +tcg_gen_neg_i64(tmp, tmp);
Better as
tcg_gen_subfi_i64(tmp, 64, sh);
r~
Optimization of altivec instructions vsl and vsr(Vector Shift Left/Rigt).
Perform shift operation (left and right respectively) on 128 bit value of
register vA by value specified in bits 125-127 of register vB. Lowest 3
bits in each byte element of register vB must be identical or result is
undefin
