test/CodeGen/ARM/Windows/vla.ll

   1 ; RUN: llc -mtriple=thumbv7-windows-itanium -mcpu=cortex-a9 -o - %s \
   2 ; RUN:  | FileCheck %s -check-prefix CHECK-SMALL-CODE
   3 ; RUN: llc -mtriple=thumbv7-windows-itanium -mcpu=cortex-a9 -code-model=large -o - %s \
   4 ; RUN:  | FileCheck %s -check-prefix CHECK-LARGE-CODE
   5 ; RUN: llc -mtriple=thumbv7-windows-msvc -mcpu=cortex-a9 -o - %s \
   6 ; RUN:  | FileCheck %s -check-prefix CHECK-SMALL-CODE
   7
   8 define arm_aapcs_vfpcc i8 @function(i32 %sz, i32 %idx) {
   9 entry:
  10   %vla = alloca i8, i32 %sz, align 1
  11   %arrayidx = getelementptr inbounds i8, i8* %vla, i32 %idx
  12   %0 = load volatile i8, i8* %arrayidx, align 1
  13   ret i8 %0
  14 }
  15
  16 ; CHECK-SMALL-CODE:   adds [[R4:r[0-9]+]], #7
  17 ; CHECK-SMALL-CODE:   bic [[R4]], [[R4]], #4
  18 ; CHECK-SMALL-CODE:   lsrs r4, [[R4]], #2
  19 ; CHECK-SMALL-CODE:   bl __chkstk
  20 ; CHECK-SMALL-CODE:   sub.w sp, sp, r4
  21
  22 ; CHECK-LARGE-CODE:   adds  [[R4:r[0-9]+]], #7
  23 ; CHECK-LARGE-CODE:   bic   [[R4]], [[R4]], #4
  24 ; CHECK-LARGE-CODE:   lsrs  r4, [[R4]], #2
  25 ; CHECK-LARGE-CODE:   movw  [[IP:r[0-9]+]], :lower16:__chkstk
  26 ; CHECK-LARGE-CODE:   movt  [[IP]], :upper16:__chkstk
  27 ; CHECK-LARGE-CODE:   blx   [[IP]]
  28 ; CHECK-LARGE-CODE:   sub.w sp, sp, r4