On 09/22/2014 11:44 PM, Zhenqiang Chen wrote:
> +/* Return true if val can be encoded as a 5-bit unsigned immediate. */
> +bool
> +aarch64_uimm5 (HOST_WIDE_INT val)
> +{
> + return (val & (HOST_WIDE_INT) 0x1f) == val;
> +}
This is just silly.
> +(define_constraint "Usn"
> + "A constant that can be used with a CCMN operation (once negated)."
> + (and (match_code "const_int")
> + (match_test "aarch64_uimm5 (-ival)")))
(match_test "IN_RANGE (ival, -31, 0)")
> +(define_predicate "aarch64_ccmp_immediate"
> + (and (match_code "const_int")
> + (ior (match_test "aarch64_uimm5 (INTVAL (op))")
> + (match_test "aarch64_uimm5 (-INTVAL (op))"))))
(and (match_code "const_int")
(match_test "IN_RANGE (INTVAL (op), -31, 31)"))
r~
