gas/testsuite/gas/arm/arm-it-auto.s

   1         .syntax unified
   2         .arch armv7
   3         .thumb
   4 main:
   5
   6 @These branches are to see the labels in the generated file
   7         bl .L888
   8         bl .L111
   9         bl .L777
  10
  11 @No IT block here:
  12         bne .L4
  13
  14 @The following groups should be an IT block each.
  15 @it ne
  16         addne.n   pc, r0
  17
  18 @it ne
  19         tbbne [r0, r1]
  20
  21 @it eq
  22         tbheq [r1, r0]
  23
  24 @The following group should be left as is:
  25         itet    eq
  26 .L111:  moveq   r0, #2
  27         movne   r0, #3
  28         moveq   r0, #4
  29
  30 @Same, reverted condition:
  31         itet    ne
  32         movne   r0, #2
  33         moveq   r0, #3
  34         movne   r0, #4
  35
  36
  37 @Two groups shall be generated, due to the label:
  38     movne   r0, #1
  39 @ second group, the label should be at the IT insn
  40 .L777:  moveq   r0, #2
  41         ldrne   pc, [r1]
  42
  43 @it ne
  44         blne .L4
  45
  46 @it lt
  47         bllt .L9
  48
  49 @itett ne
  50 .L888:  movne   r0, #45
  51         moveq   r0, #5
  52         movne   r0, #6
  53         addne.n pc, r0
  54
  55 @iteet eq
  56         moveq   r0, #7
  57         movne   r0, #8
  58         movne   r0, #3
  59         moveq   r0, #4
  60
  61 @itete eq
  62         moveq   r0, #5
  63         movne   r0, #6
  64         moveq   r0, #7
  65         movne   r0, #8
  66
  67 @ite eq - this group finishes due to the mov.n pc, rn
  68         moveq   r0, #5
  69         movne   r0, #6
  70         mov.n   pc, r0
  71
  72 @itete eq
  73         moveq   r0, #7
  74         movne   r0, #8
  75         moveq   r0, #5
  76         movne   r0, #6
  77
  78 @this shall not generate an IT block
  79         add.n   pc, r0
  80
  81 @ite eq - testing condition change (eq -> gt)
  82         moveq   r0, #7
  83         movne   r0, #8
  84
  85 @ite gt (group shall finish due to another condition change)
  86         movgt   r0, #9
  87         movle   r0, #10
  88
  89 @it eq
  90         moveq   r0, #11
  91
  92 @it le
  93         movle   r0, #12
  94
  95 @it ne
  96         movne   r0, #13
  97
  98         bl      f
  99 .L4:
 100         pop     {r4, pc}
 101 .L9:
 102         bl      f
 103
 104 @Only the movlt shall be enclosed in the IT block
 105 movlt r0, #0
 106 muls r0, r0, r1
 107
 108 @Same here:
 109 movlt r0, #0
 110 muls r0, r0, r1