test regalloc

; We can add more ISAs once they have defined encodings.
target riscv32

; regex: RX=%x\d+

function %add(i32, i32) {
ebb0(v1: i32, v2: i32):
    v3 = iadd v1, v2
; check: [R#0c,%x5]
; sameln: iadd
    return
}

; Function with a dead argument.
function %dead_arg(i32, i32) -> i32{
ebb0(v1: i32, v2: i32):
; not: regmove
; check: return v1
    return v1
}

; Return a value from a different register.
function %move1(i32, i32) -> i32 {
ebb0(v1: i32, v2: i32):
; not: regmove
; check: regmove v2, %x11 -> %x10
; nextln: return v2
        return v2
}

; Swap two registers.
function %swap(i32, i32) -> i32, i32 {
ebb0(v1: i32, v2: i32):
; not: regmove
; check: regmove v2, %x11 -> $(tmp=$RX)
; nextln: regmove v1, %x10 -> %x11
; nextln: regmove v2, $tmp -> %x10
; nextln: return v2, v1
        return v2, v1
}

; Return an EBB argument.
function %retebb(i32, i32) -> i32 {
ebb0(v1: i32, v2: i32):
    brnz v1, ebb1(v1)
    jump ebb1(v2)

ebb1(v10: i32):
    return v10
}

; Pass an EBB argument as a function argument.
function %callebb(i32, i32) -> i32 {
    fn0 = %foo(i32) -> i32

ebb0(v1: i32, v2: i32):
    brnz v1, ebb1(v1)
    jump ebb1(v2)

ebb1(v10: i32):
    v11 = call fn0(v10)
    return v11
}

; Pass an EBB argument as a jump argument.
function %jumpebb(i32, i32) -> i32 {
    fn0 = %foo(i32) -> i32

ebb0(v1: i32, v2: i32):
    brnz v1, ebb1(v1, v2)
    jump ebb1(v2, v1)

ebb1(v10: i32, v11: i32):
    jump ebb2(v10, v11)

ebb2(v20: i32, v21: i32):
    return v21
}