; LLVM IR from aws/s2n-tls :: stuffer (s2n_stuffer)

; 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_stuffer = type { %struct.s2n_blob, i32, i32, i32, i8 }
%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
@.str.43 = external hidden unnamed_addr constant [92 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: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #3

; Function Attrs: nocallback nofree nounwind willreturn memory(argmem: readwrite)
declare void @llvm.memcpy.p0.p0.i64(ptr noalias nocapture writeonly, ptr noalias nocapture readonly, i64, i1 immarg) #4

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #3

; Function Attrs: nounwind uwtable
declare dso_local i32 @s2n_stuffer_rewrite(ptr noundef) #5

; Function Attrs: nounwind uwtable
declare dso_local i32 @s2n_stuffer_write_bytes(ptr noundef, ptr noundef, i32 noundef) #5

; Function Attrs: nounwind uwtable
define dso_local i32 @s2n_stuffer_shift(ptr noundef %0) #5 {
  %2 = alloca i32, align 4
  %3 = alloca ptr, align 8
  %4 = alloca %struct.s2n_stuffer, align 8
  %5 = alloca i32, align 4
  %6 = alloca ptr, align 8
  %7 = alloca i32, align 4
  store ptr %0, ptr %3, align 8, !tbaa !5
  br label %8

8:                                                ; preds = %1
  %9 = load ptr, ptr %3, align 8, !tbaa !5
  %10 = icmp ne ptr %9, null
  br i1 %10, label %42, label %11

11:                                               ; preds = %8
  br label %12

12:                                               ; preds = %11
  br label %13

13:                                               ; preds = %12
  %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
  store ptr @.str.43, ptr %15, align 8, !tbaa !9
  %16 = call align 8 ptr @llvm.threadlocal.address.p0(ptr align 8 @_s2n_debug_info)
  %17 = getelementptr inbounds %struct.s2n_debug_info, ptr %16, i32 0, i32 0
  %18 = load ptr, ptr %17, align 8, !tbaa !9
  %19 = getelementptr inbounds i8, ptr %18, i64 21
  %20 = call ptr @strrchr(ptr noundef %19, i32 noundef 47) #6
  %21 = icmp ne ptr %20, null
  br i1 %21, label %22, label %29

22:                                               ; preds = %13
  %23 = call align 8 ptr @llvm.threadlocal.address.p0(ptr align 8 @_s2n_debug_info)
  %24 = getelementptr inbounds %struct.s2n_debug_info, ptr %23, i32 0, i32 0
  %25 = load ptr, ptr %24, align 8, !tbaa !9
  %26 = getelementptr inbounds i8, ptr %25, i64 21
  %27 = call ptr @strrchr(ptr noundef %26, i32 noundef 47) #6
  %28 = getelementptr inbounds i8, ptr %27, i64 1
  br label %34

29:                                               ; preds = %13
  %30 = call align 8 ptr @llvm.threadlocal.address.p0(ptr align 8 @_s2n_debug_info)
  %31 = getelementptr inbounds %struct.s2n_debug_info, ptr %30, i32 0, i32 0
  %32 = load ptr, ptr %31, align 8, !tbaa !9
  %33 = getelementptr inbounds i8, ptr %32, i64 21
  br label %34

34:                                               ; preds = %29, %22
  %35 = phi ptr [ %28, %22 ], [ %33, %29 ]
  %36 = call align 8 ptr @llvm.threadlocal.address.p0(ptr align 8 @_s2n_debug_info)
  %37 = getelementptr inbounds %struct.s2n_debug_info, ptr %36, i32 0, i32 1
  store ptr %35, ptr %37, align 8, !tbaa !11
  %38 = call align 4 ptr @llvm.threadlocal.address.p0(ptr align 4 @s2n_errno)
  store i32 402653193, ptr %38, align 4, !tbaa !12
  %39 = call i32 @s2n_calculate_stacktrace()
  br label %40

40:                                               ; preds = %34
  store i32 -1, ptr %2, align 4
  br label %87

41:                                               ; No predecessors!
  br label %42

42:                                               ; preds = %41, %8
  br label %43

43:                                               ; preds = %42
  call void @llvm.lifetime.start.p0(i64 40, ptr %4) #7
  %44 = load ptr, ptr %3, align 8, !tbaa !5
  call void @llvm.memcpy.p0.p0.i64(ptr align 8 %4, ptr align 8 %44, i64 40, i1 false), !tbaa.struct !14
  br label %45

45:                                               ; preds = %43
  %46 = call i32 @s2n_stuffer_rewrite(ptr noundef %4)
  %47 = icmp sgt i32 %46, -1
  br i1 %47, label %49, label %48

48:                                               ; preds = %45
  store i32 -1, ptr %2, align 4
  store i32 1, ptr %5, align 4
  br label %86

49:                                               ; preds = %45
  br label %50

50:                                               ; preds = %49
  br label %51

51:                                               ; preds = %50
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #7
  %52 = load ptr, ptr %3, align 8, !tbaa !5
  %53 = getelementptr inbounds %struct.s2n_stuffer, ptr %52, i32 0, i32 0
  %54 = getelementptr inbounds %struct.s2n_blob, ptr %53, i32 0, i32 0
  %55 = load ptr, ptr %54, align 8, !tbaa !16
  store ptr %55, ptr %6, align 8, !tbaa !5
  %56 = load ptr, ptr %3, align 8, !tbaa !5
  %57 = getelementptr inbounds %struct.s2n_stuffer, ptr %56, i32 0, i32 1
  %58 = load i32, ptr %57, align 8, !tbaa !19
  %59 = icmp ne i32 %58, 0
  br i1 %59, label %60, label %67

60:                                               ; preds = %51
  %61 = load ptr, ptr %3, align 8, !tbaa !5
  %62 = getelementptr inbounds %struct.s2n_stuffer, ptr %61, i32 0, i32 1
  %63 = load i32, ptr %62, align 8, !tbaa !19
  %64 = load ptr, ptr %6, align 8, !tbaa !5
  %65 = zext i32 %63 to i64
  %66 = getelementptr inbounds i8, ptr %64, i64 %65
  store ptr %66, ptr %6, align 8, !tbaa !5
  br label %67

67:                                               ; preds = %60, %51
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #7
  %68 = load ptr, ptr %3, align 8, !tbaa !5
  %69 = getelementptr inbounds %struct.s2n_stuffer, ptr %68, i32 0, i32 2
  %70 = load i32, ptr %69, align 4, !tbaa !20
  %71 = load ptr, ptr %3, align 8, !tbaa !5
  %72 = getelementptr inbounds %struct.s2n_stuffer, ptr %71, i32 0, i32 1
  %73 = load i32, ptr %72, align 8, !tbaa !19
  %74 = sub i32 %70, %73
  store i32 %74, ptr %7, align 4, !tbaa !12
  br label %75

75:                                               ; preds = %67
  %76 = load ptr, ptr %6, align 8, !tbaa !5
  %77 = load i32, ptr %7, align 4, !tbaa !12
  %78 = call i32 @s2n_stuffer_write_bytes(ptr noundef %4, ptr noundef %76, i32 noundef %77)
  %79 = icmp sgt i32 %78, -1
  br i1 %79, label %81, label %80

80:                                               ; preds = %75
  store i32 -1, ptr %2, align 4
  store i32 1, ptr %5, align 4
  br label %85

81:                                               ; preds = %75
  br label %82

82:                                               ; preds = %81
  br label %83

83:                                               ; preds = %82
  %84 = load ptr, ptr %3, align 8, !tbaa !5
  call void @llvm.memcpy.p0.p0.i64(ptr align 8 %84, ptr align 8 %4, i64 40, i1 false), !tbaa.struct !14
  store i32 0, ptr %2, align 4
  store i32 1, ptr %5, align 4
  br label %85

85:                                               ; preds = %83, %80
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #7
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #7
  br label %86

86:                                               ; preds = %85, %48
  call void @llvm.lifetime.end.p0(i64 40, ptr %4) #7
  br label %87

87:                                               ; preds = %86, %40
  %88 = load i32, ptr %2, 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 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #4 = { nocallback nofree nounwind willreturn memory(argmem: readwrite) }
attributes #5 = { 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 #6 = { nounwind willreturn memory(read) }
attributes #7 = { 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, !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 = !{i64 0, i64 8, !5, i64 8, i64 4, !12, i64 12, i64 4, !12, i64 16, i64 1, !15, i64 24, i64 4, !12, i64 28, i64 4, !12, i64 32, i64 4, !12, i64 36, i64 1, !15}
!15 = !{!7, !7, i64 0}
!16 = !{!17, !6, i64 0}
!17 = !{!"s2n_stuffer", !18, i64 0, !13, i64 24, !13, i64 28, !13, i64 32, !13, i64 36, !13, i64 36, !13, i64 36}
!18 = !{!"s2n_blob", !6, i64 0, !13, i64 8, !13, i64 12, !13, i64 16}
!19 = !{!17, !13, i64 24}
!20 = !{!17, !13, i64 28}


; 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 }
%struct.s2n_stuffer = type { %struct.s2n_blob, i32, i32, i32, i8 }
%struct.s2n_blob = type { ptr, i32, i32, i8 }

@_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.43 = external hidden unnamed_addr constant [92 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: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #3

; Function Attrs: mustprogress nocallback nofree nounwind willreturn memory(argmem: readwrite)
declare void @llvm.memcpy.p0.p0.i64(ptr noalias nocapture writeonly, ptr noalias nocapture readonly, i64, i1 immarg) #4

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #3

; Function Attrs: nounwind uwtable
declare dso_local i32 @s2n_stuffer_rewrite(ptr noundef) local_unnamed_addr #5

; Function Attrs: nounwind uwtable
declare dso_local i32 @s2n_stuffer_write_bytes(ptr noundef, ptr noundef, i32 noundef) local_unnamed_addr #5

; Function Attrs: nounwind uwtable
define dso_local range(i32 -1, 1) i32 @s2n_stuffer_shift(ptr noundef %0) local_unnamed_addr #5 {
  %2 = alloca %struct.s2n_stuffer, align 8
  %.not = icmp eq ptr %0, null
  br i1 %.not, label %3, label %11

3:                                                ; preds = %1
  %4 = tail call align 8 ptr @llvm.threadlocal.address.p0(ptr align 8 @_s2n_debug_info)
  store ptr @.str.43, ptr %4, align 8, !tbaa !5
  %5 = tail call ptr @strrchr(ptr noundef nonnull dereferenceable(1) getelementptr inbounds (i8, ptr @.str.43, i64 21), i32 noundef 47) #6
  %.not15 = icmp eq ptr %5, null
  %6 = getelementptr inbounds i8, ptr %5, i64 1
  %7 = select i1 %.not15, ptr getelementptr inbounds (i8, ptr @.str.43, 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() #7
  br label %27

11:                                               ; preds = %1
  call void @llvm.lifetime.start.p0(i64 40, ptr nonnull %2) #7
  call void @llvm.memcpy.p0.p0.i64(ptr noundef nonnull align 8 dereferenceable(40) %2, ptr noundef nonnull align 8 dereferenceable(40) %0, i64 40, i1 false), !tbaa.struct !13
  %12 = call i32 @s2n_stuffer_rewrite(ptr noundef nonnull %2)
  %13 = icmp sgt i32 %12, -1
  br i1 %13, label %14, label %26

14:                                               ; preds = %11
  %15 = load ptr, ptr %0, align 8, !tbaa !16
  %16 = getelementptr inbounds i8, ptr %0, i64 24
  %17 = load i32, ptr %16, align 8, !tbaa !19
  %18 = zext i32 %17 to i64
  %19 = getelementptr inbounds i8, ptr %15, i64 %18
  %20 = getelementptr inbounds i8, ptr %0, i64 28
  %21 = load i32, ptr %20, align 4, !tbaa !20
  %22 = sub i32 %21, %17
  %23 = call i32 @s2n_stuffer_write_bytes(ptr noundef nonnull %2, ptr noundef %19, i32 noundef %22)
  %24 = icmp sgt i32 %23, -1
  br i1 %24, label %25, label %26

25:                                               ; preds = %14
  call void @llvm.memcpy.p0.p0.i64(ptr noundef nonnull align 8 dereferenceable(40) %0, ptr noundef nonnull align 8 dereferenceable(40) %2, i64 40, i1 false), !tbaa.struct !13
  br label %26

26:                                               ; preds = %25, %14, %11
  %.1 = phi i32 [ -1, %11 ], [ 0, %25 ], [ -1, %14 ]
  call void @llvm.lifetime.end.p0(i64 40, ptr nonnull %2) #7
  br label %27

27:                                               ; preds = %26, %3
  %.2 = phi i32 [ %.1, %26 ], [ -1, %3 ]
  ret i32 %.2
}

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 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #4 = { mustprogress nocallback nofree nounwind willreturn memory(argmem: readwrite) }
attributes #5 = { 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 #6 = { nounwind willreturn memory(read) }
attributes #7 = { 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 = !{i64 0, i64 8, !14, i64 8, i64 4, !11, i64 12, i64 4, !11, i64 16, i64 1, !15, i64 24, i64 4, !11, i64 28, i64 4, !11, i64 32, i64 4, !11, i64 36, i64 1, !15}
!14 = !{!7, !7, i64 0}
!15 = !{!8, !8, i64 0}
!16 = !{!17, !7, i64 0}
!17 = !{!"s2n_stuffer", !18, i64 0, !12, i64 24, !12, i64 28, !12, i64 32, !12, i64 36, !12, i64 36, !12, i64 36}
!18 = !{!"s2n_blob", !7, i64 0, !12, i64 8, !12, i64 12, !12, i64 16}
!19 = !{!17, !12, i64 24}
!20 = !{!17, !12, i64 28}


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