test/MC/ARM/misaligned-blx.s

   1 @ RUN: not llvm-mc -triple thumbv7-apple-ios -filetype=obj %s -o /dev/null 2>&1 | FileCheck %s
   2         @ Size: 2 bytes
   3         .thumb_func _f1
   4         .thumb
   5         .globl _f1
   6 _f1:
   7         bx lr
   8
   9         @ A misalgined ARM destination.
  10         .arm
  11         .globl _misaligned
  12 _misaligned:
  13         bx lr
  14
  15         @ And a properly aligned one.
  16         .globl _aligned
  17         .p2align 2
  18         .arm
  19 _aligned:
  20         bx lr
  21
  22         @ Align this Thumb function so we can predict the outcome of
  23         @ "Align(PC, 4)" during blx operation.
  24         .thumb_func _test
  25         .thumb
  26         .p2align 2
  27         .globl _test
  28 _test:
  29         blx _misaligned       @ PC=0 (mod 4)
  30         movs r0, r0
  31         blx _misaligned       @ PC=2 (mod 4)
  32         movs r0, r0
  33         blx _aligned          @ PC=0 (mod 4)
  34         movs r0, r0
  35         blx _aligned          @ PC=2 (mod 4)
  36
  37 @ CHECK: error: misaligned ARM call destination
  38 @ CHECK:   blx _misaligned
  39 @ CHECK: error: misaligned ARM call destination
  40 @ CHECK:   blx _misaligned