alloc_test.ssa

function w $foo(w %x) {
@start
        jnz %x, @cond, @end
@cond
        %B0 =l alloc4 8
        %B1 =l add %B0, 4
        storew 12, %B0
        storew 111, %B1
        %v5 =w add 1, %x
        ret %B0

@end
        ret 12
}

alloc_test_output.s

.text
foo:
        pushq %rbp
        movq %rsp, %rbp
        cmpl $0, %edi
        jnz .Lbb2
        movl $12, %eax
        leave
        ret
.Lbb2:
        subq $16, %rsp
        movq %rsp, %rax
        movl $12, (%rax)
        movl $111, 4(%rax)
        leave
        ret
/* end function foo */