On 17/03/14 10:27, Richard Earnshaw wrote:
On 16/03/14 12:30, Renlin Li wrote:
Hi all,
Thank you for your suggestions, Richard. I have updated the patch
accordingly.
This is an optimization patch which will combine "ubfiz" and "orr"
insns with a single "bfi" when certain conditions meet.
tmp
On 16/03/14 12:30, Renlin Li wrote:
> Hi all,
>
> Thank you for your suggestions, Richard. I have updated the patch
> accordingly.
>
> This is an optimization patch which will combine "ubfiz" and "orr"
> insns with a single "bfi" when certain conditions meet.
>
> tmp = (x & m) | ( (y & n) <<
Hi all,
Thank you for your suggestions, Richard. I have updated the patch
accordingly.
This is an optimization patch which will combine "ubfiz" and "orr"
insns with a single "bfi" when certain conditions meet.
tmp = (x & m) | ( (y & n) << lsb) can be presented using
and tmp, x, m
On 02/25/2014 07:56 AM, Renlin Li wrote:
> +(define_insn_and_split "*combine_bfi3"
> + [(set (match_operand:GPI 0 "register_operand" "=r")
> +(ior:GPI (and:GPI (match_operand:GPI 1 "register_operand" "0")
> + (match_operand 2 "const_int_operand" "n"))
> +
Hi all,
This is an optimization patch which will combine "ubfiz" and "orr"
insns with a single "bfi" when certain conditions meet.
tmp = (x & m) | ( (y & n) << lsb) can be presented using
and tmp, x, m
bfi tmp, y, #lsb, #width
if ((n+1) == 2^width) && (m & n << lsb) == 0.
The origi
