contract C {
    fn leftU(u32 x, u32 y) -> (u32) {
        return x << y;
    }

}

// ====
// compileToEwasm: also
// compileViaYul: also
// ----
// leftU(u32,u32): 255, 8  -> 0
// leftU(u32,u32): 255, 1  -> 254
// leftU(u32,u32): 255, 0  -> 255
// leftS(int8,u32): 1, 7  -> -128 # Result is -128 and output is sign-extended, not zero-padded. #
// leftS(int8,u32): 1, 6  -> 64