test run
target aarch64
target aarch64 has_lse
target x86_64
target s390x 
target riscv64 has_a

; We can't test that these instructions are right regarding atomicity, but we can
; test if they perform their operation correctly

function %atomic_cas_i64(i64, i64, i64) -> i64 {
    ss0 = explicit_slot 8

block0(v0: i64, v1: i64, v2: i64):
    stack_store.i64 v0, ss0

    v3 = stack_addr.i64 ss0
    v4 = atomic_cas.i64 v3, v1, v2

    v5 = stack_load.i64 ss0
    return v5
}
; run: %atomic_cas_i64(0, 0, 2) == 2
; run: %atomic_cas_i64(1, 0, 2) == 1
; run: %atomic_cas_i64(0, 1, 2) == 0
; run: %atomic_cas_i64(0, 0, 0xC0FFEEEE_DECAFFFF) == 0xC0FFEEEE_DECAFFFF

function %atomic_cas_i32(i32, i32, i32) -> i32 {
    ss0 = explicit_slot 4

block0(v0: i32, v1: i32, v2: i32):
    stack_store.i32 v0, ss0

    v3 = stack_addr.i64 ss0
    v4 = atomic_cas.i32 v3, v1, v2

    v5 = stack_load.i32 ss0
    return v5
}
; run: %atomic_cas_i32(0, 0, 2) == 2
; run: %atomic_cas_i32(1, 0, 2) == 1
; run: %atomic_cas_i32(0, 1, 2) == 0
; run: %atomic_cas_i32(0, 0, 0xC0FFEEEE) == 0xC0FFEEEE