; LLVM IR from aws/s2n-tls :: crypto (s2n_drbg)

; 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_drbg = type { i64, ptr, [16 x i8], i64 }

@_s2n_debug_info = external thread_local global %struct.s2n_debug_info, align 8
@s2n_errno = external thread_local global i32, align 4
@.str.17 = external hidden unnamed_addr constant [88 x i8], align 1
@.str.18 = external hidden unnamed_addr constant [88 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_drbg_bytes_used(ptr noundef %0, ptr noundef %1) #3 {
  %3 = alloca %struct.s2n_result, align 4
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  store ptr %0, ptr %4, align 8, !tbaa !5
  store ptr %1, ptr %5, align 8, !tbaa !5
  br label %6

6:                                                ; preds = %2
  %7 = load ptr, ptr %4, align 8, !tbaa !5
  %8 = icmp ne ptr %7, null
  br i1 %8, label %41, label %9

9:                                                ; preds = %6
  br label %10

10:                                               ; preds = %9
  br label %11

11:                                               ; preds = %10
  %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
  store ptr @.str.17, ptr %13, align 8, !tbaa !9
  %14 = call align 8 ptr @llvm.threadlocal.address.p0(ptr align 8 @_s2n_debug_info)
  %15 = getelementptr inbounds %struct.s2n_debug_info, ptr %14, i32 0, i32 0
  %16 = load ptr, ptr %15, align 8, !tbaa !9
  %17 = getelementptr inbounds i8, ptr %16, i64 21
  %18 = call ptr @strrchr(ptr noundef %17, i32 noundef 47) #4
  %19 = icmp ne ptr %18, null
  br i1 %19, label %20, label %27

20:                                               ; preds = %11
  %21 = call align 8 ptr @llvm.threadlocal.address.p0(ptr align 8 @_s2n_debug_info)
  %22 = getelementptr inbounds %struct.s2n_debug_info, ptr %21, i32 0, i32 0
  %23 = load ptr, ptr %22, align 8, !tbaa !9
  %24 = getelementptr inbounds i8, ptr %23, i64 21
  %25 = call ptr @strrchr(ptr noundef %24, i32 noundef 47) #4
  %26 = getelementptr inbounds i8, ptr %25, i64 1
  br label %32

27:                                               ; preds = %11
  %28 = call align 8 ptr @llvm.threadlocal.address.p0(ptr align 8 @_s2n_debug_info)
  %29 = getelementptr inbounds %struct.s2n_debug_info, ptr %28, i32 0, i32 0
  %30 = load ptr, ptr %29, align 8, !tbaa !9
  %31 = getelementptr inbounds i8, ptr %30, i64 21
  br label %32

32:                                               ; preds = %27, %20
  %33 = phi ptr [ %26, %20 ], [ %31, %27 ]
  %34 = call align 8 ptr @llvm.threadlocal.address.p0(ptr align 8 @_s2n_debug_info)
  %35 = getelementptr inbounds %struct.s2n_debug_info, ptr %34, i32 0, i32 1
  store ptr %33, ptr %35, align 8, !tbaa !11
  %36 = call align 4 ptr @llvm.threadlocal.address.p0(ptr align 4 @s2n_errno)
  store i32 402653193, ptr %36, align 4, !tbaa !12
  %37 = call i32 @s2n_calculate_stacktrace()
  br label %38

38:                                               ; preds = %32
  %39 = getelementptr inbounds %struct.s2n_result, ptr %3, i32 0, i32 0
  store i32 -1, ptr %39, align 4, !tbaa !14
  br label %85

40:                                               ; No predecessors!
  br label %41

41:                                               ; preds = %40, %6
  br label %42

42:                                               ; preds = %41
  br label %43

43:                                               ; preds = %42
  %44 = load ptr, ptr %5, align 8, !tbaa !5
  %45 = icmp ne ptr %44, null
  br i1 %45, label %78, label %46

46:                                               ; preds = %43
  br label %47

47:                                               ; preds = %46
  br label %48

48:                                               ; preds = %47
  %49 = call align 8 ptr @llvm.threadlocal.address.p0(ptr align 8 @_s2n_debug_info)
  %50 = getelementptr inbounds %struct.s2n_debug_info, ptr %49, i32 0, i32 0
  store ptr @.str.18, ptr %50, align 8, !tbaa !9
  %51 = call align 8 ptr @llvm.threadlocal.address.p0(ptr align 8 @_s2n_debug_info)
  %52 = getelementptr inbounds %struct.s2n_debug_info, ptr %51, i32 0, i32 0
  %53 = load ptr, ptr %52, align 8, !tbaa !9
  %54 = getelementptr inbounds i8, ptr %53, i64 21
  %55 = call ptr @strrchr(ptr noundef %54, i32 noundef 47) #4
  %56 = icmp ne ptr %55, null
  br i1 %56, label %57, label %64

57:                                               ; preds = %48
  %58 = call align 8 ptr @llvm.threadlocal.address.p0(ptr align 8 @_s2n_debug_info)
  %59 = getelementptr inbounds %struct.s2n_debug_info, ptr %58, i32 0, i32 0
  %60 = load ptr, ptr %59, align 8, !tbaa !9
  %61 = getelementptr inbounds i8, ptr %60, i64 21
  %62 = call ptr @strrchr(ptr noundef %61, i32 noundef 47) #4
  %63 = getelementptr inbounds i8, ptr %62, i64 1
  br label %69

64:                                               ; preds = %48
  %65 = call align 8 ptr @llvm.threadlocal.address.p0(ptr align 8 @_s2n_debug_info)
  %66 = getelementptr inbounds %struct.s2n_debug_info, ptr %65, i32 0, i32 0
  %67 = load ptr, ptr %66, align 8, !tbaa !9
  %68 = getelementptr inbounds i8, ptr %67, i64 21
  br label %69

69:                                               ; preds = %64, %57
  %70 = phi ptr [ %63, %57 ], [ %68, %64 ]
  %71 = call align 8 ptr @llvm.threadlocal.address.p0(ptr align 8 @_s2n_debug_info)
  %72 = getelementptr inbounds %struct.s2n_debug_info, ptr %71, i32 0, i32 1
  store ptr %70, ptr %72, align 8, !tbaa !11
  %73 = call align 4 ptr @llvm.threadlocal.address.p0(ptr align 4 @s2n_errno)
  store i32 402653193, ptr %73, align 4, !tbaa !12
  %74 = call i32 @s2n_calculate_stacktrace()
  br label %75

75:                                               ; preds = %69
  %76 = getelementptr inbounds %struct.s2n_result, ptr %3, i32 0, i32 0
  store i32 -1, ptr %76, align 4, !tbaa !14
  br label %85

77:                                               ; No predecessors!
  br label %78

78:                                               ; preds = %77, %43
  br label %79

79:                                               ; preds = %78
  %80 = load ptr, ptr %4, align 8, !tbaa !5
  %81 = getelementptr inbounds %struct.s2n_drbg, ptr %80, i32 0, i32 0
  %82 = load i64, ptr %81, align 8, !tbaa !16
  %83 = load ptr, ptr %5, align 8, !tbaa !5
  store i64 %82, ptr %83, align 8, !tbaa !19
  %84 = getelementptr inbounds %struct.s2n_result, ptr %3, i32 0, i32 0
  store i32 0, ptr %84, align 4, !tbaa !14
  br label %85

85:                                               ; preds = %79, %75, %38
  %86 = getelementptr inbounds %struct.s2n_result, ptr %3, i32 0, i32 0
  %87 = load i32, ptr %86, align 4
  ret i32 %87
}

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, !18, i64 0}
!17 = !{!"s2n_drbg", !18, i64 0, !6, i64 8, !7, i64 16, !18, i64 32}
!18 = !{!"long", !7, i64 0}
!19 = !{!18, !18, i64 0}


; 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
@.str.17 = external hidden unnamed_addr constant [88 x i8], align 1
@.str.18 = external hidden unnamed_addr constant [88 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_drbg_bytes_used(ptr noundef readonly %0, ptr noundef writeonly %1) local_unnamed_addr #3 {
  %.not = icmp eq ptr %0, null
  br i1 %.not, label %3, label %11

3:                                                ; preds = %2
  %4 = tail call align 8 ptr @llvm.threadlocal.address.p0(ptr align 8 @_s2n_debug_info)
  store ptr @.str.17, ptr %4, align 8, !tbaa !5
  %5 = tail call ptr @strrchr(ptr noundef nonnull dereferenceable(1) getelementptr inbounds (i8, ptr @.str.17, i64 21), i32 noundef 47) #4
  %.not7 = icmp eq ptr %5, null
  %6 = getelementptr inbounds i8, ptr %5, i64 1
  %7 = select i1 %.not7, ptr getelementptr inbounds (i8, ptr @.str.17, i64 21), ptr %6
  %8 = getelementptr inbounds i8, ptr %4, i64 8
  store ptr %7, ptr %8, align 8, !tbaa !10
  %9 = tail call align 4 ptr @llvm.threadlocal.address.p0(ptr align 4 @s2n_errno)
  store i32 402653193, ptr %9, align 4, !tbaa !11
  %10 = tail call i32 @s2n_calculate_stacktrace() #5
  br label %22

11:                                               ; preds = %2
  %.not8 = icmp eq ptr %1, null
  br i1 %.not8, label %12, label %20

12:                                               ; preds = %11
  %13 = tail call align 8 ptr @llvm.threadlocal.address.p0(ptr align 8 @_s2n_debug_info)
  store ptr @.str.18, ptr %13, align 8, !tbaa !5
  %14 = tail call ptr @strrchr(ptr noundef nonnull dereferenceable(1) getelementptr inbounds (i8, ptr @.str.18, i64 21), i32 noundef 47) #4
  %.not9 = icmp eq ptr %14, null
  %15 = getelementptr inbounds i8, ptr %14, i64 1
  %16 = select i1 %.not9, ptr getelementptr inbounds (i8, ptr @.str.18, i64 21), ptr %15
  %17 = getelementptr inbounds i8, ptr %13, i64 8
  store ptr %16, ptr %17, align 8, !tbaa !10
  %18 = tail call align 4 ptr @llvm.threadlocal.address.p0(ptr align 4 @s2n_errno)
  store i32 402653193, ptr %18, align 4, !tbaa !11
  %19 = tail call i32 @s2n_calculate_stacktrace() #5
  br label %22

20:                                               ; preds = %11
  %21 = load i64, ptr %0, align 8, !tbaa !13
  store i64 %21, ptr %1, align 8, !tbaa !16
  br label %22

22:                                               ; preds = %20, %12, %3
  %.sroa.0.0 = phi i32 [ 0, %20 ], [ -1, %12 ], [ -1, %3 ]
  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 willreturn memory(read) }
attributes #5 = { 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 = !{!"s2n_debug_info", !7, i64 0, !7, i64 8}
!7 = !{!"any pointer", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!6, !7, i64 8}
!11 = !{!12, !12, i64 0}
!12 = !{!"int", !8, i64 0}
!13 = !{!14, !15, i64 0}
!14 = !{!"s2n_drbg", !15, i64 0, !7, i64 8, !8, i64 16, !15, i64 32}
!15 = !{!"long", !8, i64 0}
!16 = !{!15, !15, i64 0}


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