--- before.s    2015-09-12 14:12:50.701904637 +0200
+++ after.s 2015-09-12 14:12:34.249725780 +0200
@@ -24,3 +24,3 @@
    push    {r4, lr}
-   and r4, r0, #1
+   mov r4, r0
    bl  g
@@ -29,3 +29,4 @@
 .L2:
-   cbz r4, .L1
+   tst r4, #1
+   beq .L1
    bl  f2