Slightly better reduction:

<?php

function test(int $x)
{
    return ($x > 0xdead && unimportant()) ||
           ($x < 0xbeef && unimportant());
}

var_dump(test(0xcccc));

We see

            #7.T2 [bool] RANGE[0..1] = IS_SMALLER #6.CV0($x) [long] RANGE[-9223372036854775808..9223372036854775807] int(48879)
            #8.T1 [bool] RANGE[0..1] = JMPZ_EX #7.T2 [bool] RANGE[0..1] BB7
BB5: follow lines=[8-9] 

and

.L17:
	mov 0x50(%r14), %rax
	cmp $0xbeef, %rax
	setl %al
	movzx %al, %eax
	lea 0x2(%rax), %eax
	mov %eax, 0x78(%r14)
	jge .L31

where 0x78 is T2. We should be either writing directly to T1 at 0x68, or copying from T2 to T1.