> On Jan 9, 2023, at 7:20 AM, Stefan Kanthak <stefan.kant...@nexgo.de> wrote:
>
> Hi,
>
> GCC (and other C compilers too) support the widening multiplication
> of i386/AMD64 processors, but DON'T support their narrowing division:
I wonder if this changed in the recent past. I have a pattern for this type of
thing in pdp11.md:
(define_expand "divmodhi4"
[(parallel
[(set (subreg:HI (match_dup 1) 0)
(div:HI (match_operand:SI 1 "register_operand" "0")
(match_operand:HI 2 "general_operand" "g")))
(set (subreg:HI (match_dup 1) 2)
(mod:HI (match_dup 1) (match_dup 2)))])
(set (match_operand:HI 0 "register_operand" "=r")
(subreg:HI (match_dup 1) 0))
(set (match_operand:HI 3 "register_operand" "=r")
(subreg:HI (match_dup 1) 2))]
"TARGET_40_PLUS"
"")
and I'm pretty sure this worked at some point in the past.
paul
