Hi!
On Mon, Feb 17, 2020 at 09:54:58PM +0100, Marcus Geelnard wrote:
> On 2020-02-17 02:12, Segher Boessenkool wrote:
> >>Trying 10, 9 -> 11:
> >>Failed to match this instruction:
> >>(set (reg:SI 84)
> >> (mult:SI (sign_extend:SI (subreg:HI (reg:SI 87) 0))
> >> (sign_extend:SI (subreg
Hi Segher,
Thanks for the analysis!
On 2020-02-17 02:12, Segher Boessenkool wrote:
Hi!
On Sun, Feb 16, 2020 at 09:52:12PM +0100, Marcus Geelnard wrote:
(define_insn "smulhshi3"
[(set (match_operand:HI 0 "register_operand" "=r")
(truncate:HI
(ashiftrt:SI
(mu
Hi!
On Sun, Feb 16, 2020 at 09:52:12PM +0100, Marcus Geelnard wrote:
> (define_insn "smulhshi3"
> [(set (match_operand:HI 0 "register_operand" "=r")
> (truncate:HI
> (ashiftrt:SI
> (mult:SI
> (sign_extend:SI (match_operand:HI
On 2020-02-09 19:02, Segher Boessenkool wrote:
On Sun, Feb 09, 2020 at 12:15:03PM +0100, m wrote:
On 2020-02-07 16:44, Segher Boessenkool wrote:
(define_insn "smulhshi3"
[(set (match_operand:HI 0 "register_operand" "=r")
(truncate:HI
(ashiftrt:SI
(mult:SI
On Sun, Feb 09, 2020 at 12:15:03PM +0100, m wrote:
> On 2020-02-07 16:44, Segher Boessenkool wrote:
> >> (define_insn "smulhshi3"
> >> [(set (match_operand:HI 0 "register_operand" "=r")
> >> (truncate:HI
> >> (ashiftrt:SI
> >> (mult:SI
> >> (sign_extend:SI
On 2020-02-07 16:44, Segher Boessenkool wrote:
Hi!
On Fri, Feb 07, 2020 at 03:41:25PM +0100, m wrote:
...so I tried to write a corresponding matching pattern, like so:
(define_insn "smulhshi3"
[(set (match_operand:HI 0 "register_operand" "=r")
(truncate:HI
(ashiftrt:SI
Hi!
On Fri, Feb 07, 2020 at 03:41:25PM +0100, m wrote:
> ...so I tried to write a corresponding matching pattern, like so:
>
> (define_insn "smulhshi3"
> [(set (match_operand:HI 0 "register_operand" "=r")
> (truncate:HI
> (ashiftrt:SI
> (mult:SI
> (sign_e
Hello!
I am trying to implement the following insns for my back end: smulhssi3,
smulhshi3, smulhsqi3
According to [1], the operation should be equivalent to:
narrow op0, op1, op2;
op0 = (narrow) (((wide) op1 * (wide) op2) >> (N / 2 - 1));
...so I tried to write a corresponding matching p
