OK.
Thanks!
> This define_insn is never used, since a sign-extend to the same mode is
> just a move, so delete it.
>
> Tested on x86_64-linux-gnu host for bpf-unknown-none target.
>
> gcc/
>
> * config/bpf/bpf.md (extendsisi2): Delete useless define_insn.
> ---
> gcc/config/bpf/bpf.md | 7 -------
> 1 file changed, 7 deletions(-)
>
> diff --git a/gcc/config/bpf/bpf.md b/gcc/config/bpf/bpf.md
> index e0a42b9f939..a64de1095ed 100644
> --- a/gcc/config/bpf/bpf.md
> +++ b/gcc/config/bpf/bpf.md
> @@ -350,13 +350,6 @@ (define_insn "extendqidi2"
> {ldxsb\t%0,%1|%0 = *(s8 *) (%1)}"
> [(set_attr "type" "alu,ldx")])
>
> -(define_insn "extendsisi2"
> - [(set (match_operand:SI 0 "register_operand" "=r")
> - (sign_extend:SI (match_operand:SI 1 "register_operand" "r")))]
> - "bpf_has_smov"
> - "{movs32\t%0,%1,32|%w0 = (s32) %w1}"
> - [(set_attr "type" "alu")])
> -
> (define_insn "extendhisi2"
> [(set (match_operand:SI 0 "register_operand" "=r")
> (sign_extend:SI (match_operand:HI 1 "register_operand" "r")))]
