; LLVM IR from aws/s2n-tls :: utils (s2n_random)

; 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.s2n_debug_info = type { ptr, ptr }
%struct.s2n_result = type { i32 }
%struct.s2n_blob = type { ptr, i32, i32, i8 }

@_s2n_debug_info = external thread_local global %struct.s2n_debug_info, align 8
@s2n_errno = external thread_local global i32, align 4
@s2n_rand_seed_cb = external hidden global ptr, align 8
@.str.4 = external hidden unnamed_addr constant [89 x i8], align 1
@.str.5 = external hidden unnamed_addr constant [89 x i8], align 1

; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare nonnull ptr @llvm.threadlocal.address.p0(ptr nonnull) #0

; Function Attrs: nounwind willreturn memory(read)
declare ptr @strrchr(ptr noundef, i32 noundef) #1

declare i32 @s2n_calculate_stacktrace() #2

; Function Attrs: nounwind uwtable
define dso_local i32 @s2n_get_seed_entropy(ptr noundef %0) #3 {
  %2 = alloca %struct.s2n_result, align 4
  %3 = alloca ptr, align 8
  store ptr %0, ptr %3, align 8, !tbaa !5
  br label %4

4:                                                ; preds = %1
  %5 = load ptr, ptr %3, align 8, !tbaa !5
  %6 = icmp ne ptr %5, null
  br i1 %6, label %39, label %7

7:                                                ; preds = %4
  br label %8

8:                                                ; preds = %7
  br label %9

9:                                                ; preds = %8
  %10 = call align 8 ptr @llvm.threadlocal.address.p0(ptr align 8 @_s2n_debug_info)
  %11 = getelementptr inbounds %struct.s2n_debug_info, ptr %10, i32 0, i32 0
  store ptr @.str.4, ptr %11, align 8, !tbaa !9
  %12 = call align 8 ptr @llvm.threadlocal.address.p0(ptr align 8 @_s2n_debug_info)
  %13 = getelementptr inbounds %struct.s2n_debug_info, ptr %12, i32 0, i32 0
  %14 = load ptr, ptr %13, align 8, !tbaa !9
  %15 = getelementptr inbounds i8, ptr %14, i64 21
  %16 = call ptr @strrchr(ptr noundef %15, i32 noundef 47) #4
  %17 = icmp ne ptr %16, null
  br i1 %17, label %18, label %25

18:                                               ; preds = %9
  %19 = call align 8 ptr @llvm.threadlocal.address.p0(ptr align 8 @_s2n_debug_info)
  %20 = getelementptr inbounds %struct.s2n_debug_info, ptr %19, i32 0, i32 0
  %21 = load ptr, ptr %20, align 8, !tbaa !9
  %22 = getelementptr inbounds i8, ptr %21, i64 21
  %23 = call ptr @strrchr(ptr noundef %22, i32 noundef 47) #4
  %24 = getelementptr inbounds i8, ptr %23, i64 1
  br label %30

25:                                               ; preds = %9
  %26 = call align 8 ptr @llvm.threadlocal.address.p0(ptr align 8 @_s2n_debug_info)
  %27 = getelementptr inbounds %struct.s2n_debug_info, ptr %26, i32 0, i32 0
  %28 = load ptr, ptr %27, align 8, !tbaa !9
  %29 = getelementptr inbounds i8, ptr %28, i64 21
  br label %30

30:                                               ; preds = %25, %18
  %31 = phi ptr [ %24, %18 ], [ %29, %25 ]
  %32 = call align 8 ptr @llvm.threadlocal.address.p0(ptr align 8 @_s2n_debug_info)
  %33 = getelementptr inbounds %struct.s2n_debug_info, ptr %32, i32 0, i32 1
  store ptr %31, ptr %33, align 8, !tbaa !11
  %34 = call align 4 ptr @llvm.threadlocal.address.p0(ptr align 4 @s2n_errno)
  store i32 402653193, ptr %34, align 4, !tbaa !12
  %35 = call i32 @s2n_calculate_stacktrace()
  br label %36

36:                                               ; preds = %30
  %37 = getelementptr inbounds %struct.s2n_result, ptr %2, i32 0, i32 0
  store i32 -1, ptr %37, align 4, !tbaa !14
  br label %86

38:                                               ; No predecessors!
  br label %39

39:                                               ; preds = %38, %4
  br label %40

40:                                               ; preds = %39
  br label %41

41:                                               ; preds = %40
  %42 = load ptr, ptr @s2n_rand_seed_cb, align 8, !tbaa !5
  %43 = load ptr, ptr %3, align 8, !tbaa !5
  %44 = getelementptr inbounds %struct.s2n_blob, ptr %43, i32 0, i32 0
  %45 = load ptr, ptr %44, align 8, !tbaa !16
  %46 = load ptr, ptr %3, align 8, !tbaa !5
  %47 = getelementptr inbounds %struct.s2n_blob, ptr %46, i32 0, i32 1
  %48 = load i32, ptr %47, align 8, !tbaa !18
  %49 = call i32 %42(ptr noundef %45, i32 noundef %48)
  %50 = icmp sge i32 %49, 0
  br i1 %50, label %83, label %51

51:                                               ; preds = %41
  br label %52

52:                                               ; preds = %51
  br label %53

53:                                               ; preds = %52
  %54 = call align 8 ptr @llvm.threadlocal.address.p0(ptr align 8 @_s2n_debug_info)
  %55 = getelementptr inbounds %struct.s2n_debug_info, ptr %54, i32 0, i32 0
  store ptr @.str.5, ptr %55, align 8, !tbaa !9
  %56 = call align 8 ptr @llvm.threadlocal.address.p0(ptr align 8 @_s2n_debug_info)
  %57 = getelementptr inbounds %struct.s2n_debug_info, ptr %56, i32 0, i32 0
  %58 = load ptr, ptr %57, align 8, !tbaa !9
  %59 = getelementptr inbounds i8, ptr %58, i64 21
  %60 = call ptr @strrchr(ptr noundef %59, i32 noundef 47) #4
  %61 = icmp ne ptr %60, null
  br i1 %61, label %62, label %69

62:                                               ; preds = %53
  %63 = call align 8 ptr @llvm.threadlocal.address.p0(ptr align 8 @_s2n_debug_info)
  %64 = getelementptr inbounds %struct.s2n_debug_info, ptr %63, i32 0, i32 0
  %65 = load ptr, ptr %64, align 8, !tbaa !9
  %66 = getelementptr inbounds i8, ptr %65, i64 21
  %67 = call ptr @strrchr(ptr noundef %66, i32 noundef 47) #4
  %68 = getelementptr inbounds i8, ptr %67, i64 1
  br label %74

69:                                               ; preds = %53
  %70 = call align 8 ptr @llvm.threadlocal.address.p0(ptr align 8 @_s2n_debug_info)
  %71 = getelementptr inbounds %struct.s2n_debug_info, ptr %70, i32 0, i32 0
  %72 = load ptr, ptr %71, align 8, !tbaa !9
  %73 = getelementptr inbounds i8, ptr %72, i64 21
  br label %74

74:                                               ; preds = %69, %62
  %75 = phi ptr [ %68, %62 ], [ %73, %69 ]
  %76 = call align 8 ptr @llvm.threadlocal.address.p0(ptr align 8 @_s2n_debug_info)
  %77 = getelementptr inbounds %struct.s2n_debug_info, ptr %76, i32 0, i32 1
  store ptr %75, ptr %77, align 8, !tbaa !11
  %78 = call align 4 ptr @llvm.threadlocal.address.p0(ptr align 4 @s2n_errno)
  store i32 335544386, ptr %78, align 4, !tbaa !12
  %79 = call i32 @s2n_calculate_stacktrace()
  br label %80

80:                                               ; preds = %74
  %81 = getelementptr inbounds %struct.s2n_result, ptr %2, i32 0, i32 0
  store i32 -1, ptr %81, align 4, !tbaa !14
  br label %86

82:                                               ; No predecessors!
  br label %83

83:                                               ; preds = %82, %41
  br label %84

84:                                               ; preds = %83
  %85 = getelementptr inbounds %struct.s2n_result, ptr %2, i32 0, i32 0
  store i32 0, ptr %85, align 4, !tbaa !14
  br label %86

86:                                               ; preds = %84, %80, %36
  %87 = getelementptr inbounds %struct.s2n_result, ptr %2, i32 0, i32 0
  %88 = load i32, ptr %87, align 4
  ret i32 %88
}

attributes #0 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }
attributes #1 = { nounwind willreturn memory(read) "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 = { "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 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 #4 = { nounwind willreturn memory(read) }

!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, !6, i64 0}
!10 = !{!"s2n_debug_info", !6, i64 0, !6, i64 8}
!11 = !{!10, !6, i64 8}
!12 = !{!13, !13, i64 0}
!13 = !{!"int", !7, i64 0}
!14 = !{!15, !13, i64 0}
!15 = !{!"", !13, i64 0}
!16 = !{!17, !6, i64 0}
!17 = !{!"s2n_blob", !6, i64 0, !13, i64 8, !13, i64 12, !13, i64 16}
!18 = !{!17, !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"

%struct.s2n_debug_info = type { ptr, ptr }

@_s2n_debug_info = external thread_local local_unnamed_addr global %struct.s2n_debug_info, align 8
@s2n_errno = external thread_local local_unnamed_addr global i32, align 4
@s2n_rand_seed_cb = external hidden local_unnamed_addr global ptr, align 8
@.str.4 = external hidden unnamed_addr constant [89 x i8], align 1
@.str.5 = external hidden unnamed_addr constant [89 x i8], align 1

; Function Attrs: mustprogress nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare nonnull ptr @llvm.threadlocal.address.p0(ptr nonnull) #0

; Function Attrs: mustprogress nofree nounwind willreturn memory(argmem: read)
declare ptr @strrchr(ptr noundef, i32 noundef) local_unnamed_addr #1

declare i32 @s2n_calculate_stacktrace() local_unnamed_addr #2

; Function Attrs: nounwind uwtable
define dso_local range(i32 -1, 1) i32 @s2n_get_seed_entropy(ptr noundef readonly %0) local_unnamed_addr #3 {
  %.not = icmp eq ptr %0, null
  br i1 %.not, label %.sink.split, label %2

2:                                                ; preds = %1
  %3 = load ptr, ptr @s2n_rand_seed_cb, align 8, !tbaa !5
  %4 = load ptr, ptr %0, align 8, !tbaa !9
  %5 = getelementptr inbounds i8, ptr %0, i64 8
  %6 = load i32, ptr %5, align 8, !tbaa !12
  %7 = tail call i32 %3(ptr noundef %4, i32 noundef %6) #4
  %8 = icmp sgt i32 %7, -1
  br i1 %8, label %16, label %.sink.split

.sink.split:                                      ; preds = %2, %1
  %.str.5.sink = phi ptr [ @.str.4, %1 ], [ @.str.5, %2 ]
  %.sink15 = phi ptr [ getelementptr inbounds (i8, ptr @.str.4, i64 21), %1 ], [ getelementptr inbounds (i8, ptr @.str.5, i64 21), %2 ]
  %.sink = phi i32 [ 402653193, %1 ], [ 335544386, %2 ]
  %9 = tail call align 8 ptr @llvm.threadlocal.address.p0(ptr align 8 @_s2n_debug_info)
  store ptr %.str.5.sink, ptr %9, align 8, !tbaa !13
  %10 = tail call ptr @strrchr(ptr noundef nonnull dereferenceable(1) %.sink15, i32 noundef 47) #5
  %.not6 = icmp eq ptr %10, null
  %11 = getelementptr inbounds i8, ptr %10, i64 1
  %12 = select i1 %.not6, ptr %.sink15, ptr %11
  %13 = getelementptr inbounds i8, ptr %9, i64 8
  store ptr %12, ptr %13, align 8, !tbaa !15
  %14 = tail call align 4 ptr @llvm.threadlocal.address.p0(ptr align 4 @s2n_errno)
  store i32 %.sink, ptr %14, align 4, !tbaa !16
  %15 = tail call i32 @s2n_calculate_stacktrace() #4
  br label %16

16:                                               ; preds = %.sink.split, %2
  %.sroa.0.0 = phi i32 [ 0, %2 ], [ -1, %.sink.split ]
  ret i32 %.sroa.0.0
}

attributes #0 = { mustprogress nocallback nofree nosync nounwind speculatable willreturn memory(none) }
attributes #1 = { mustprogress nofree nounwind willreturn memory(argmem: read) "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 = { "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 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 #4 = { nounwind }
attributes #5 = { nounwind willreturn memory(read) }

!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, !6, i64 0}
!10 = !{!"s2n_blob", !6, i64 0, !11, i64 8, !11, i64 12, !11, i64 16}
!11 = !{!"int", !7, i64 0}
!12 = !{!10, !11, i64 8}
!13 = !{!14, !6, i64 0}
!14 = !{!"s2n_debug_info", !6, i64 0, !6, i64 8}
!15 = !{!14, !6, i64 8}
!16 = !{!11, !11, i64 0}


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