Hi Alex,
On Fri, Jun 07, 2019 at 07:42:26AM +0300, Alex Hill via gcc-help wrote:
> I wrote a pattern in machine description file *.md to avoid branches:
> (define_insn "smin<GPR:mode>3"
> [
> (set
> (match_operand:GPR 0 "register_operand" "=r")
> (if_then_else:GPR
> (lt:GPR
> (match_operand:GPR 1 "register_operand" " r")
> (match_operand:GPR 2 "register_operand" " r"))
> (match_dup 1)
> (match_dup 2)))
> ]
> ""
> "min\t%0,%1,%2"
> [(set_attr "type" "move")
> (set_attr "mode" "<MODE>")])
You could just do
(define_insn "smin<mode>3"
[(set (match_operand:GPR 0 "register_operand" "=r")
(smin:GPR (match_operand:GPR 1 "register_operand" "r")
(match_operand:GPR 2 "register_operand" "r")))]
""
"min\t%0,%1,%2"
[(set_attr "type" "move")
(set_attr "mode" "<MODE>")])
Does that work better?
Segher
