llvm/test/CodeGen/Thumb/stack_guard_remat.ll

   1 ; RUN: cat %s > %t.pic.ll
   2 ; RUN: echo -e '!llvm.module.flags = !{!0}\n!0 = !{i32 7, !"PIC Level", i32 2}' >> %t.pic.ll
   3 ; RUN: llc < %t.pic.ll -mtriple=thumb-apple-darwin -relocation-model=pic -no-integrated-as | FileCheck %s -check-prefix=PIC
   4 ; RUN: llc < %s -mtriple=thumb-apple-darwin -relocation-model=static -no-integrated-as | FileCheck %s -check-prefix=NO-PIC  -check-prefix=STATIC
   5 ; RUN: llc < %s -mtriple=thumb-apple-darwin -relocation-model=dynamic-no-pic -no-integrated-as | FileCheck %s  -check-prefix=NO-PIC -check-prefix=DYNAMIC-NO-PIC
   6
   7 ;PIC:        foo2
   8 ;PIC:        add [[SAVED_GUARD:r[0-9]+]], sp, #904
   9 ;PIC-NEXT:   ldr [[SAVED_GUARD]], [[[SAVED_GUARD]], #124]
  10 ;PIC-NEXT:   ldr [[ORIGINAL_GUARD:r[0-9]+]], [[ORIGINAL_GUARD_LABEL:LCPI[0-9_]+]]
  11 ;PIC-NEXT: [[LABEL1:LPC[0-9_]+]]:
  12 ;PIC-NEXT:   add [[ORIGINAL_GUARD]], pc
  13 ;PIC-NEXT:   ldr [[ORIGINAL_GUARD]], [[[ORIGINAL_GUARD]]]
  14 ;PIC-NEXT:   ldr [[ORIGINAL_GUARD]], [[[ORIGINAL_GUARD]]]
  15 ;PIC-NEXT:   cmp [[ORIGINAL_GUARD]], [[SAVED_GUARD]]
  16
  17 ;PIC:      [[ORIGINAL_GUARD_LABEL]]:
  18 ;PIC-NEXT:   .long L___stack_chk_guard$non_lazy_ptr-([[LABEL1]]+4)
  19
  20 ;NO-PIC:   foo2
  21 ;NO-PIC:                add [[SAVED_GUARD:r[0-9]+]], sp, #904
  22 ;NO-PIC-NEXT:           ldr [[SAVED_GUARD]], [[[SAVED_GUARD]], #124]
  23 ;NO-PIC-NEXT:           ldr [[ORIGINAL_GUARD:r[0-9]+]], [[ORIGINAL_GUARD_LABEL:LCPI[0-9_]+]]
  24 ;DYNAMIC-NO-PIC:        add [[ORIGINAL_GUARD]], pc
  25 ;NO-PIC-NEXT:           ldr [[ORIGINAL_GUARD]], [[[ORIGINAL_GUARD]]]
  26 ;DYNAMIC-NO-PIC-NEXT:   ldr [[ORIGINAL_GUARD]], [[[ORIGINAL_GUARD]]]
  27 ;NO-PIC-NEXT:           cmp [[ORIGINAL_GUARD]], [[SAVED_GUARD]]
  28
  29 ;STATIC:      [[ORIGINAL_GUARD_LABEL]]:
  30 ;STATIC-NEXT:   .long ___stack_chk_guard
  31
  32 ;DYNAMIC-NO-PIC:      [[ORIGINAL_GUARD_LABEL]]:
  33 ;DYNAMIC-NO-PIC-NEXT:   .long L___stack_chk_guard$non_lazy_ptr
  34
  35 ; Function Attrs: nounwind ssp
  36 define i32 @test_stack_guard_remat() #0 {
  37   %a1 = alloca [256 x i32], align 4
  38   call void @llvm.lifetime.start.p0(i64 1024, ptr %a1)
  39   call void @foo3(ptr %a1) #3
  40   call void asm sideeffect "foo2", "~{r0},~{r1},~{r2},~{r3},~{r4},~{r5},~{r6},~{r7},~{r8},~{r9},~{r10},~{r11},~{r12},~{sp},~{lr}"()
  41   call void @llvm.lifetime.end.p0(i64 1024, ptr %a1)
  42   ret i32 0
  43 }
  44
  45 ; Function Attrs: nounwind
  46 declare void @llvm.lifetime.start.p0(i64, ptr nocapture)
  47
  48 declare void @foo3(ptr)
  49
  50 ; Function Attrs: nounwind
  51 declare void @llvm.lifetime.end.p0(i64, ptr nocapture)
  52
  53 attributes #0 = { nounwind ssp "less-precise-fpmad"="false" "frame-pointer"="all" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }