llvm/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 misaligned ARM destination.
  10         .arm
  11         .byte 0x0
  12         .globl _misaligned
  13 _misaligned:
  14         bx lr
  15
  16         @ And a properly aligned one.
  17         .globl _aligned
  18         .p2align 2
  19         .arm
  20 _aligned:
  21         bx lr
  22
  23         @ Align this Thumb function so we can predict the outcome of
  24         @ "Align(PC, 4)" during blx operation.
  25         .thumb_func _test
  26         .thumb
  27         .p2align 2
  28         .globl _test
  29 _test:
  30         blx _misaligned       @ PC=0 (mod 4)
  31         movs r0, r0
  32         blx _misaligned       @ PC=2 (mod 4)
  33         movs r0, r0
  34         blx _aligned          @ PC=0 (mod 4)
  35         movs r0, r0
  36         blx _aligned          @ PC=2 (mod 4)
  37
  38 @ CHECK: error: misaligned ARM call destination
  39 @ CHECK:   blx _misaligned
  40 @ CHECK: error: misaligned ARM call destination
  41 @ CHECK:   blx _misaligned