Transforming

step0.php

<?php

/**
 * @param int $n
 * @return int
 */
function foo($n) {
	for ($i = 0; $i < 10; $i++) {
		if ($i % 2) {
			return $i;
		}
	}
	return $n;
}

step1.php

<?php

/**
 * @param int $n
 * @return int
 */
function foo( $n)
{
    $i = 0;
    compiled_label_2:
    if (!($i < 10)) {
        goto compiled_label_1;
    }
    if ($i % 2) {
        return $i;
    }
    compiled_label_0:
    $i++;
    goto compiled_label_2;
    compiled_label_1:
    return $n;
}

step2.op

function foo(l1 : long) : long
	incoming_reg(l1, rdi)
.L:
	l4 = 0
.L0:
	i6 = l4 >= 10
	if l4 < 10 then goto .L1
.L:
	goto .L2
	ends_in_dead
.L:
	goto .L3
	ends_in_dead
.L3: .L1:
	l8 = l4 % 2
	if lfalse(l8) then goto .L4
.L:
	return_long(l4)
	ends_in_dead
.L:
	goto .L5
	ends_in_dead
.L6: .L5: .L4:
	l9 = l4
	l11 = l4 + 1
	l4 = l11
	goto .L0
	ends_in_dead
.L2:
	return_long(l1)
	ends_in_dead
.L:
.L:
end

step3.asm

    push   %rbp
    mov    %rsp, %rbp
    sub    $0x10, %rsp
    mov    %r15, (%rsp)
    mov    %rdi, -0x8(%rbp)
    xor    %r15d, %r15d
    mov    $0xa, %eax
JMPLOC5:
    cmp    %rax, %r15
    jl     JMPLOC1
    jmpq   JMPLOC2
JMPLOC1:
    mov    %r15, %rax
    mov    $0x2, %rcx
    cqto   
    idiv   %rcx
    test   %rdx, %rdx
    je     JMPLOC4
    mov    %r15, %rax
    jmpq   JMPLOC3
JMPLOC4:
    mov    $0x1, %eax
    add    %rax, %r15
    jmp    JMPLOC5
JMPLOC2:
    mov    -0x8(%rbp), %rax
JMPLOC3:
    mov    (%rsp), %r15
    mov    %rbp, %rsp
    pop    %rbp
    retq