; LLVM IR from specinfo-ua/UAPKI :: library/uapkic/src (entropy)

; 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.ByteArray_st = type { ptr, i64 }

@.str = external hidden unnamed_addr constant [17 x i8], align 1

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

declare void @stacktrace_add(ptr noundef, i64 noundef, i32 noundef) #1

declare i32 @jent_entropy_init() #1

declare void @stacktrace_create(ptr noundef, i64 noundef, i32 noundef, ptr noundef) #1

declare ptr @jent_entropy_collector_alloc(i32 noundef, i32 noundef) #1

declare i32 @jent_read_entropy(ptr noundef, ptr noundef, i64 noundef) #1

declare void @jent_entropy_collector_free(ptr noundef) #1

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

; Function Attrs: nounwind uwtable
define dso_local i32 @entropy_jitter(ptr noundef %0) #2 {
  %2 = alloca ptr, align 8
  %3 = alloca i32, align 4
  %4 = alloca ptr, align 8
  store ptr %0, ptr %2, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #3
  store i32 0, ptr %3, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %4) #3
  store ptr null, ptr %4, align 8, !tbaa !5
  %5 = call i32 @jent_entropy_init()
  %6 = icmp ne i32 %5, 0
  br i1 %6, label %7, label %12

7:                                                ; preds = %1
  br label %8

8:                                                ; preds = %7
  store i32 9, ptr %3, align 4, !tbaa !9
  %9 = load i32, ptr %3, align 4, !tbaa !9
  call void @stacktrace_create(ptr noundef @.str, i64 noundef 191, i32 noundef %9, ptr noundef null)
  br label %36

10:                                               ; No predecessors!
  br label %11

11:                                               ; preds = %10
  br label %12

12:                                               ; preds = %11, %1
  br label %13

13:                                               ; preds = %12
  %14 = call ptr @jent_entropy_collector_alloc(i32 noundef 1, i32 noundef 0)
  store ptr %14, ptr %4, align 8, !tbaa !5
  %15 = icmp eq ptr null, %14
  br i1 %15, label %16, label %18

16:                                               ; preds = %13
  store i32 2, ptr %3, align 4, !tbaa !9
  %17 = load i32, ptr %3, align 4, !tbaa !9
  call void @stacktrace_add(ptr noundef @.str, i64 noundef 193, i32 noundef %17)
  br label %36

18:                                               ; preds = %13
  br label %19

19:                                               ; preds = %18
  br label %20

20:                                               ; preds = %19
  %21 = load ptr, ptr %4, align 8, !tbaa !5
  %22 = load ptr, ptr %2, align 8, !tbaa !5
  %23 = getelementptr inbounds %struct.ByteArray_st, ptr %22, i32 0, i32 0
  %24 = load ptr, ptr %23, align 8, !tbaa !11
  %25 = load ptr, ptr %2, align 8, !tbaa !5
  %26 = getelementptr inbounds %struct.ByteArray_st, ptr %25, i32 0, i32 1
  %27 = load i64, ptr %26, align 8, !tbaa !14
  %28 = call i32 @jent_read_entropy(ptr noundef %21, ptr noundef %24, i64 noundef %27)
  %29 = icmp ne i32 %28, 0
  br i1 %29, label %30, label %35

30:                                               ; preds = %20
  br label %31

31:                                               ; preds = %30
  store i32 9, ptr %3, align 4, !tbaa !9
  %32 = load i32, ptr %3, align 4, !tbaa !9
  call void @stacktrace_create(ptr noundef @.str, i64 noundef 195, i32 noundef %32, ptr noundef null)
  br label %36

33:                                               ; No predecessors!
  br label %34

34:                                               ; preds = %33
  br label %35

35:                                               ; preds = %34, %20
  br label %36

36:                                               ; preds = %35, %31, %16, %8
  %37 = load ptr, ptr %4, align 8, !tbaa !5
  call void @jent_entropy_collector_free(ptr noundef %37)
  %38 = load i32, ptr %3, align 4, !tbaa !9
  call void @llvm.lifetime.end.p0(i64 8, ptr %4) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #3
  ret i32 %38
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { "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 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 #3 = { 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/C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"int", !7, i64 0}
!11 = !{!12, !6, i64 0}
!12 = !{!"ByteArray_st", !6, i64 0, !13, i64 8}
!13 = !{!"long", !7, i64 0}
!14 = !{!12, !13, i64 8}


; 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"

@.str = external hidden unnamed_addr constant [17 x i8], align 1

declare void @stacktrace_add(ptr noundef, i64 noundef, i32 noundef) local_unnamed_addr #0

declare i32 @jent_entropy_init() local_unnamed_addr #0

declare void @stacktrace_create(ptr noundef, i64 noundef, i32 noundef, ptr noundef) local_unnamed_addr #0

declare ptr @jent_entropy_collector_alloc(i32 noundef, i32 noundef) local_unnamed_addr #0

declare i32 @jent_read_entropy(ptr noundef, ptr noundef, i64 noundef) local_unnamed_addr #0

declare void @jent_entropy_collector_free(ptr noundef) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
define dso_local range(i32 0, 10) i32 @entropy_jitter(ptr nocapture noundef readonly %0) local_unnamed_addr #1 {
  %2 = tail call i32 @jent_entropy_init() #2
  %.not = icmp eq i32 %2, 0
  br i1 %.not, label %4, label %3

3:                                                ; preds = %1
  tail call void @stacktrace_create(ptr noundef nonnull @.str, i64 noundef 191, i32 noundef 9, ptr noundef null) #2
  br label %14

4:                                                ; preds = %1
  %5 = tail call ptr @jent_entropy_collector_alloc(i32 noundef 1, i32 noundef 0) #2
  %6 = icmp eq ptr %5, null
  br i1 %6, label %7, label %8

7:                                                ; preds = %4
  tail call void @stacktrace_add(ptr noundef nonnull @.str, i64 noundef 193, i32 noundef 2) #2
  br label %14

8:                                                ; preds = %4
  %9 = load ptr, ptr %0, align 8, !tbaa !5
  %10 = getelementptr inbounds i8, ptr %0, i64 8
  %11 = load i64, ptr %10, align 8, !tbaa !11
  %12 = tail call i32 @jent_read_entropy(ptr noundef nonnull %5, ptr noundef %9, i64 noundef %11) #2
  %.not9 = icmp eq i32 %12, 0
  br i1 %.not9, label %14, label %13

13:                                               ; preds = %8
  tail call void @stacktrace_create(ptr noundef nonnull @.str, i64 noundef 195, i32 noundef 9, ptr noundef null) #2
  br label %14

14:                                               ; preds = %8, %13, %7, %3
  %.07 = phi i32 [ 9, %3 ], [ 2, %7 ], [ 9, %13 ], [ 0, %8 ]
  %.0 = phi ptr [ null, %3 ], [ null, %7 ], [ %5, %13 ], [ %5, %8 ]
  tail call void @jent_entropy_collector_free(ptr noundef %.0) #2
  ret i32 %.07
}

attributes #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 #1 = { nounwind 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, !7, i64 0}
!6 = !{!"ByteArray_st", !7, i64 0, !10, i64 8}
!7 = !{!"any pointer", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!"long", !8, i64 0}
!11 = !{!6, !10, i64 8}


; Effective O3 passes: EarlyCSEPass,GlobalOptPass,IPSCCPPass,InferFunctionAttrsPass,InstCombinePass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass