test/CodeGen/Thumb2/segmented-stacks.ll

   1 ; RUN: llc < %s -mtriple=thumb-linux-androideabi -march=thumb -mcpu=arm1156t2-s -mattr=+thumb2 -verify-machineinstrs | FileCheck %s -check-prefix=Thumb-android
   2 ; RUN: llc < %s -mtriple=thumb-linux-androideabi -march=thumb -mcpu=arm1156t2-s -mattr=+thumb2 -filetype=obj
   3
   4
   5 ; Just to prevent the alloca from being optimized away
   6 declare void @dummy_use(i32*, i32)
   7
   8 define void @test_basic() #0 {
   9         %mem = alloca i32, i32 10
  10         call void @dummy_use (i32* %mem, i32 10)
  11         ret void
  12
  13 ; Thumb-android:      test_basic:
  14
  15 ; Thumb-android:      push    {r4, r5}
  16 ; Thumb-android-NEXT: mrc     p15, #0, r4, c13, c0, #3
  17 ; Thumb-android-NEXT: mov     r5, sp
  18 ; Thumb-android-NEXT: ldr     r4, [r4, #252]
  19 ; Thumb-android-NEXT: cmp     r4, r5
  20 ; Thumb-android-NEXT: blo     .LBB0_2
  21
  22 ; Thumb-android:      mov     r4, #48
  23 ; Thumb-android-NEXT: mov     r5, #0
  24 ; Thumb-android-NEXT: push    {lr}
  25 ; Thumb-android-NEXT: bl      __morestack
  26 ; Thumb-android-NEXT: ldr     lr, [sp], #4
  27 ; Thumb-android-NEXT: pop     {r4, r5}
  28 ; Thumb-android-NEXT: bx      lr
  29
  30 ; Thumb-android:      pop     {r4, r5}
  31
  32 }
  33
  34 attributes #0 = { "split-stack" }