after.s

    .arch armv7-a
    .eabi_attribute 28, 1
    .fpu vfpv3-d16
    .eabi_attribute 20, 1
    .eabi_attribute 21, 1
    .eabi_attribute 23, 3
    .eabi_attribute 24, 1
    .eabi_attribute 25, 1
    .eabi_attribute 26, 2
    .eabi_attribute 30, 1
    .eabi_attribute 34, 1
    .eabi_attribute 18, 4
    .file   "test-777.c"
    .text
    .align  2
    .global f2
    .syntax unified
    .thumb
    .thumb_func
    .type   f2, %function
f2:
    @ args = 0, pretend = 0, frame = 0
    @ frame_needed = 0, uses_anonymous_args = 0
    @ link register save eliminated.
    push    {r4, r5}
    tst r2, #1
    beq .L2
    adds    r5, r1, #1
    ldrb    r3, [r1]    @ zero_extendqisi2
    mov r4, r3
    tst r2, #2
    beq .L3
    mov r1, r5
.L7:
    ldrh    r1, [r1]
    tst r2, #1
    itte    ne
    addne   r3, r0, #1
    strbne  r4, [r0]
    moveq   r3, r0
    strh    r1, [r3]    @ movhi
    b   .L1
.L3:
    tst r2, #1
    beq .L1
    b   .L5
.L2:
    tst r2, #2
    bne .L7
    b   .L1
.L5:
    strb    r3, [r0]
.L1:
    pop {r4, r5}
    bx  lr
    .size   f2, .-f2
    .ident  "GCC: (GNU) 6.0.0 20150902 (experimental)"
    .section    .note.GNU-stack,"",%progbits