test/MC/ARM/aligned-blx.s

   1 @ RUN: llvm-mc -triple thumbv7-apple-ios -filetype=obj %s -o %t
   2 @ RUN: llvm-objdump -macho -d %t | FileCheck %s
   3
   4         @ Size: 2 bytes
   5         .thumb_func _f1
   6         .thumb
   7         .globl _f1
   8 _f1:
   9         bx lr
  10
  11         @ A properly aligned ARM function
  12         .globl _aligned
  13         .p2align 2
  14         .arm
  15 _aligned:
  16         bx lr
  17
  18         @ Align this Thumb function so we can predict the outcome of
  19         @ "Align(PC, 4)" during blx operation.
  20         .thumb_func _test
  21         .thumb
  22         .p2align 2
  23         .globl _test
  24 _test:
  25         blx _elsewhere
  26         blx _aligned    @ PC=0 (mod 4)
  27         blx _aligned    @ PC=0 (mod 4)
  28         movs r0, r0
  29         blx _aligned    @ PC=2 (mod 4)
  30         blx _f1
  31
  32 @ CHECK: blx _elsewhere
  33 @ CHECK: ff f7 fa ef blx _aligned
  34 @ CHECK: ff f7 f8 ef blx _aligned
  35 @ CHECK: ff f7 f6 ef blx _aligned
  36 @ CHECK: ff f7 f2 ef blx _f1