On Thu, Jun 17, 2021 at 03:21:05PM +0200, Richard Biener wrote: > but the difficulty is in the (const_int ..) operand to (vec_merge ..). > I've tried sth like > > (define_mode_attr addsub_cst [(V4DF "(const_int 5)") (V2DF "(const_int > 1)") > (V4SF "(const_int 5)") (V8SF "(const_int > 85)")])
Have you tried making addsub_cst just "5" "1" or "85" and use (const_int <addsub_cst>)? If even that doesn't work, make it (match_operand ... "const_int_operand" "n") and check the value in the insn condition using INTVAL (operands[xxx]) == <addsub_cst> ? > (define_insn "vec_addsub<mode>" > [(set (match_operand:VF_128_256 0 "register_operand" "=x") > (vec_merge:VF_128_256 > (minus:VF_128_256 > (match_operand:VF_128_256 1 "register_operand" "x") > (match_operand:VF_128_256 2 "nonimmediate_operand" "xm")) > (plus:VF_128_256 (match_dup 1) (match_dup 2)) > ADDSUB_CST))] > "" > "%vaddsub<ssemodesuffix>\t{%2, %1, %0|%0, %1, %2}" > > but genpreds doesn't like whatever syntax I try to use at this place > <addsub_cst> (<addsub_cst>), ... > > Is this somehow possible and is there an existing example I can look at? > > Thanks, > Richard. Jakub