; LLVM IR from AngoraFuzzer/Angora :: llvm_mode/dfsan_rt/sanitizer_common/sanitizer_common.ll/ZN11 (sanitizer12RunFreeHooksEPKv)

; Unoptimized IR (clang -disable-llvm-passes):
target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"

%"struct.__sanitizer::MallocFreeHook" = type { ptr, ptr }

@_ZN11__sanitizerL7MFHooksE = external hidden global [5 x %"struct.__sanitizer::MallocFreeHook"], align 16

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: mustprogress uwtable
define dso_local void @_ZN11__sanitizer12RunFreeHooksEPKv(ptr noundef %0) #1 {
  %2 = alloca ptr, align 8
  %3 = alloca i32, align 4
  %4 = alloca i32, align 4
  %5 = alloca ptr, align 8
  store ptr %0, ptr %2, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #2
  store i32 0, ptr %3, align 4, !tbaa !9
  br label %6

6:                                                ; preds = %25, %1
  %7 = load i32, ptr %3, align 4, !tbaa !9
  %8 = icmp slt i32 %7, 5
  br i1 %8, label %10, label %9

9:                                                ; preds = %6
  store i32 2, ptr %4, align 4
  br label %28

10:                                               ; preds = %6
  call void @llvm.lifetime.start.p0(i64 8, ptr %5) #2
  %11 = load i32, ptr %3, align 4, !tbaa !9
  %12 = sext i32 %11 to i64
  %13 = getelementptr inbounds [5 x %"struct.__sanitizer::MallocFreeHook"], ptr @_ZN11__sanitizerL7MFHooksE, i64 0, i64 %12
  %14 = getelementptr inbounds %"struct.__sanitizer::MallocFreeHook", ptr %13, i32 0, i32 1
  %15 = load ptr, ptr %14, align 8, !tbaa !11
  store ptr %15, ptr %5, align 8, !tbaa !5
  %16 = load ptr, ptr %5, align 8, !tbaa !5
  %17 = icmp ne ptr %16, null
  br i1 %17, label %19, label %18

18:                                               ; preds = %10
  store i32 1, ptr %4, align 4
  br label %22

19:                                               ; preds = %10
  %20 = load ptr, ptr %5, align 8, !tbaa !5
  %21 = load ptr, ptr %2, align 8, !tbaa !5
  call void %20(ptr noundef %21)
  store i32 0, ptr %4, align 4
  br label %22

22:                                               ; preds = %19, %18
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #2
  %23 = load i32, ptr %4, align 4
  switch i32 %23, label %28 [
    i32 0, label %24
  ]

24:                                               ; preds = %22
  br label %25

25:                                               ; preds = %24
  %26 = load i32, ptr %3, align 4, !tbaa !9
  %27 = add nsw i32 %26, 1
  store i32 %27, ptr %3, align 4, !tbaa !9
  br label %6, !llvm.loop !13

28:                                               ; preds = %22, %9
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #2
  %29 = load i32, ptr %4, align 4
  switch i32 %29, label %31 [
    i32 2, label %30
    i32 1, label %30
  ]

30:                                               ; preds = %28, %28
  ret void

31:                                               ; preds = %28
  unreachable
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { mustprogress uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #2 = { nounwind }

!llvm.module.flags = !{!0, !1, !2, !3}
!llvm.ident = !{!4}

!0 = !{i32 1, !"wchar_size", i32 4}
!1 = !{i32 8, !"PIC Level", i32 2}
!2 = !{i32 7, !"PIE Level", i32 2}
!3 = !{i32 7, !"uwtable", i32 2}
!4 = !{!"clang version 19.1.0 (git@github.com:llvm/llvm-project.git a4bf6cd7cfb1a1421ba92bca9d017b49936c55e4)"}
!5 = !{!6, !6, i64 0}
!6 = !{!"any pointer", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"int", !7, i64 0}
!11 = !{!12, !6, i64 8}
!12 = !{!"_ZTSN11__sanitizer14MallocFreeHookE", !6, i64 0, !6, i64 8}
!13 = distinct !{!13, !14}
!14 = !{!"llvm.loop.mustprogress"}


; Optimized IR (opt -passes='default<O3>'):
target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"

%"struct.__sanitizer::MallocFreeHook" = type { ptr, ptr }

@_ZN11__sanitizerL7MFHooksE = external hidden local_unnamed_addr global [5 x %"struct.__sanitizer::MallocFreeHook"], align 16

; Function Attrs: mustprogress uwtable
define dso_local void @_ZN11__sanitizer12RunFreeHooksEPKv(ptr noundef %0) local_unnamed_addr #0 {
  %2 = load ptr, ptr getelementptr inbounds (i8, ptr @_ZN11__sanitizerL7MFHooksE, i64 8), align 8, !tbaa !5
  %.not.not = icmp eq ptr %2, null
  br i1 %.not.not, label %.critedge, label %3

3:                                                ; preds = %1
  tail call void %2(ptr noundef %0)
  %4 = load ptr, ptr getelementptr inbounds (i8, ptr @_ZN11__sanitizerL7MFHooksE, i64 24), align 8, !tbaa !5
  %.not.not.1 = icmp eq ptr %4, null
  br i1 %.not.not.1, label %.critedge, label %5

5:                                                ; preds = %3
  tail call void %4(ptr noundef %0)
  %6 = load ptr, ptr getelementptr inbounds (i8, ptr @_ZN11__sanitizerL7MFHooksE, i64 40), align 8, !tbaa !5
  %.not.not.2 = icmp eq ptr %6, null
  br i1 %.not.not.2, label %.critedge, label %7

7:                                                ; preds = %5
  tail call void %6(ptr noundef %0)
  %8 = load ptr, ptr getelementptr inbounds (i8, ptr @_ZN11__sanitizerL7MFHooksE, i64 56), align 8, !tbaa !5
  %.not.not.3 = icmp eq ptr %8, null
  br i1 %.not.not.3, label %.critedge, label %9

9:                                                ; preds = %7
  tail call void %8(ptr noundef %0)
  %10 = load ptr, ptr getelementptr inbounds (i8, ptr @_ZN11__sanitizerL7MFHooksE, i64 72), align 8, !tbaa !5
  %.not.not.4 = icmp eq ptr %10, null
  br i1 %.not.not.4, label %.critedge, label %11

11:                                               ; preds = %9
  tail call void %10(ptr noundef %0)
  br label %.critedge

.critedge:                                        ; preds = %11, %9, %7, %5, %3, %1
  ret void
}

attributes #0 = { mustprogress uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }

!llvm.module.flags = !{!0, !1, !2, !3}
!llvm.ident = !{!4}

!0 = !{i32 1, !"wchar_size", i32 4}
!1 = !{i32 8, !"PIC Level", i32 2}
!2 = !{i32 7, !"PIE Level", i32 2}
!3 = !{i32 7, !"uwtable", i32 2}
!4 = !{!"clang version 19.1.0 (git@github.com:llvm/llvm-project.git a4bf6cd7cfb1a1421ba92bca9d017b49936c55e4)"}
!5 = !{!6, !7, i64 8}
!6 = !{!"_ZTSN11__sanitizer14MallocFreeHookE", !7, i64 0, !7, i64 8}
!7 = !{!"any pointer", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C++ TBAA"}


; Effective O3 passes: GVNPass,GlobalOptPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,LoopRotatePass,SROAPass,SimplifyCFGPass,TailCallElimPass