Macro test_impl

macro_rules! test_impl {
    ($fun:ident ($($v:ident : $ty:ty),*) -> $r:ty [$call:ident, _]) => { ... };
    ($fun:ident +($($v:ident : $ty:ty),*) -> $r:ty [$call:ident, $instr:ident]) => { ... };
    ($fun:ident +($($v:ident : $ty:ty),*) -> $r:ty [$call:ident, $tf:literal $instr:ident]) => { ... };
    ($fun:ident ($($v:ident : $ty:ty),*) -> $r:ty [$call:ident, $tf:literal $instr:ident]) => { ... };
    ($fun:ident ($($v:ident : $ty:ty),*) -> $r:ty [$call:ident, $instr:ident]) => { ... };
}

Available on s390x only.