contract C {
    function f(int a, int b) public pure returns (int x) {
        x = a - b;
    }
    function g(int8 a, int8 b) public pure returns (int8 x) {
        x = a - b;
    }
}
// ====
// compileViaYul: also
// ----
// f(int256,int256): 5, 6 -> -1
// f(int256,int256): -2, 1 -> -3
// f(int256,int256): -2, 2 -> -4
// f(int256,int256): 2, -2 -> 4
// f(int256,int256): 2, 2 -> 0
// f(int256,int256): -5, -6 -> 1
// f(int256,int256): 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF0, -15 -> 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF
// f(int256,int256): 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF0, -16 -> FAILURE
// f(int256,int256): 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF, -1 -> FAILURE
// f(int256,int256): 15, 0x8000000000000000000000000000000000000000000000000000000000000010 -> 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF
// f(int256,int256): 16, 0x8000000000000000000000000000000000000000000000000000000000000010 -> FAILURE
// f(int256,int256): 1, 0x8000000000000000000000000000000000000000000000000000000000000000 -> FAILURE
// f(int256,int256): -1, 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF -> 0x8000000000000000000000000000000000000000000000000000000000000000
// f(int256,int256): -2, 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF -> FAILURE
// f(int256,int256): 0x8000000000000000000000000000000000000000000000000000000000000001, 1 -> 0x8000000000000000000000000000000000000000000000000000000000000000
// f(int256,int256): 0x8000000000000000000000000000000000000000000000000000000000000001, 2 -> FAILURE
// f(int256,int256): 0x8000000000000000000000000000000000000000000000000000000000000000, 1 -> FAILURE
// g(int8,int8): 5, 6 -> -1
// g(int8,int8): -2, 1 -> -3
// g(int8,int8): -2, 2 -> -4
// g(int8,int8): 2, -2 -> 4
// g(int8,int8): 2, 2 -> 0
// g(int8,int8): -5, -6 -> 1
// g(int8,int8): 126, -1 -> 127
// g(int8,int8): 1, -126 -> 127
// g(int8,int8): 127, -1 -> FAILURE
// g(int8,int8): 1, -127 -> FAILURE
// g(int8,int8): -127, 1 -> -128
// g(int8,int8): -1, 127 -> -128
// g(int8,int8): -127, 2 -> FAILURE
// g(int8,int8): -2, 127 -> FAILURE