; LLVM IR from aws/s2n-tls :: utils (s2n_mem)

; 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 }

@initialized = external hidden global i8, align 1
@_s2n_debug_info = external thread_local global %struct.s2n_debug_info, align 8
@s2n_errno = external thread_local global i32, align 4
@s2n_mem_init_cb = external hidden global ptr, align 8
@.str.27 = external hidden unnamed_addr constant [86 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_mem_init() #3 {
  %1 = alloca i32, align 4
  br label %2

2:                                                ; preds = %0
  %3 = load ptr, ptr @s2n_mem_init_cb, align 8, !tbaa !5
  %4 = call i32 %3()
  %5 = icmp sge i32 %4, 0
  br i1 %5, label %37, label %6

6:                                                ; preds = %2
  br label %7

7:                                                ; preds = %6
  br label %8

8:                                                ; preds = %7
  %9 = call align 8 ptr @llvm.threadlocal.address.p0(ptr align 8 @_s2n_debug_info)
  %10 = getelementptr inbounds %struct.s2n_debug_info, ptr %9, i32 0, i32 0
  store ptr @.str.27, ptr %10, align 8, !tbaa !9
  %11 = call align 8 ptr @llvm.threadlocal.address.p0(ptr align 8 @_s2n_debug_info)
  %12 = getelementptr inbounds %struct.s2n_debug_info, ptr %11, i32 0, i32 0
  %13 = load ptr, ptr %12, align 8, !tbaa !9
  %14 = getelementptr inbounds i8, ptr %13, i64 21
  %15 = call ptr @strrchr(ptr noundef %14, i32 noundef 47) #4
  %16 = icmp ne ptr %15, null
  br i1 %16, label %17, label %24

17:                                               ; preds = %8
  %18 = call align 8 ptr @llvm.threadlocal.address.p0(ptr align 8 @_s2n_debug_info)
  %19 = getelementptr inbounds %struct.s2n_debug_info, ptr %18, i32 0, i32 0
  %20 = load ptr, ptr %19, align 8, !tbaa !9
  %21 = getelementptr inbounds i8, ptr %20, i64 21
  %22 = call ptr @strrchr(ptr noundef %21, i32 noundef 47) #4
  %23 = getelementptr inbounds i8, ptr %22, i64 1
  br label %29

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

29:                                               ; preds = %24, %17
  %30 = phi ptr [ %23, %17 ], [ %28, %24 ]
  %31 = call align 8 ptr @llvm.threadlocal.address.p0(ptr align 8 @_s2n_debug_info)
  %32 = getelementptr inbounds %struct.s2n_debug_info, ptr %31, i32 0, i32 1
  store ptr %30, ptr %32, align 8, !tbaa !11
  %33 = call align 4 ptr @llvm.threadlocal.address.p0(ptr align 4 @s2n_errno)
  store i32 335544386, ptr %33, align 4, !tbaa !12
  %34 = call i32 @s2n_calculate_stacktrace()
  br label %35

35:                                               ; preds = %29
  store i32 -1, ptr %1, align 4
  br label %39

36:                                               ; No predecessors!
  br label %37

37:                                               ; preds = %36, %2
  br label %38

38:                                               ; preds = %37
  store i8 1, ptr @initialized, align 1, !tbaa !14
  store i32 0, ptr %1, align 4
  br label %39

39:                                               ; preds = %38, %35
  %40 = load i32, ptr %1, align 4
  ret i32 %40
}

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, !15, i64 0}
!15 = !{!"_Bool", !7, 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 }

@initialized = external hidden local_unnamed_addr global i8, align 1
@_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_mem_init_cb = external hidden local_unnamed_addr global ptr, align 8
@.str.27 = external hidden unnamed_addr constant [86 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_mem_init() local_unnamed_addr #3 {
  %1 = load ptr, ptr @s2n_mem_init_cb, align 8, !tbaa !5
  %2 = tail call i32 %1() #4
  %3 = icmp sgt i32 %2, -1
  br i1 %3, label %12, label %4

4:                                                ; preds = %0
  %5 = tail call align 8 ptr @llvm.threadlocal.address.p0(ptr align 8 @_s2n_debug_info)
  store ptr @.str.27, ptr %5, align 8, !tbaa !9
  %6 = tail call ptr @strrchr(ptr noundef nonnull dereferenceable(1) getelementptr inbounds (i8, ptr @.str.27, i64 21), i32 noundef 47) #5
  %.not = icmp eq ptr %6, null
  %7 = getelementptr inbounds i8, ptr %6, i64 1
  %8 = select i1 %.not, ptr getelementptr inbounds (i8, ptr @.str.27, i64 21), ptr %7
  %9 = getelementptr inbounds i8, ptr %5, i64 8
  store ptr %8, ptr %9, align 8, !tbaa !11
  %10 = tail call align 4 ptr @llvm.threadlocal.address.p0(ptr align 4 @s2n_errno)
  store i32 335544386, ptr %10, align 4, !tbaa !12
  %11 = tail call i32 @s2n_calculate_stacktrace() #4
  br label %13

12:                                               ; preds = %0
  store i8 1, ptr @initialized, align 1, !tbaa !14
  br label %13

13:                                               ; preds = %12, %4
  %.0 = phi i32 [ 0, %12 ], [ -1, %4 ]
  ret i32 %.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_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, !15, i64 0}
!15 = !{!"_Bool", !7, i64 0}


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