; LLVM IR from PacktPublishing/Demystifying-Cryptography-with-OpenSSL-3 :: Chapter09 (tls-client)

; 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"

@stderr = external global ptr, align 8
@.str = external hidden unnamed_addr constant [45 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [26 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [29 x i8], align 1

; Function Attrs: nounwind uwtable
define dso_local i32 @main(i32 noundef %0, ptr noundef %1) #0 {
  %3 = alloca i32, align 4
  %4 = alloca i32, align 4
  %5 = alloca ptr, align 8
  %6 = alloca i32, align 4
  %7 = alloca ptr, align 8
  %8 = alloca ptr, align 8
  %9 = alloca ptr, align 8
  %10 = alloca i32, align 4
  store i32 0, ptr %3, align 4
  store i32 %0, ptr %4, align 4, !tbaa !5
  store ptr %1, ptr %5, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #3
  store i32 0, ptr %6, align 4, !tbaa !5
  %11 = load i32, ptr %4, align 4, !tbaa !5
  %12 = icmp ne i32 %11, 3
  br i1 %12, label %13, label %22

13:                                               ; preds = %2
  %14 = load i32, ptr %4, align 4, !tbaa !5
  %15 = icmp ne i32 %14, 4
  br i1 %15, label %16, label %22

16:                                               ; preds = %13
  %17 = load ptr, ptr @stderr, align 8, !tbaa !9
  %18 = load ptr, ptr %5, align 8, !tbaa !9
  %19 = getelementptr inbounds ptr, ptr %18, i64 0
  %20 = load ptr, ptr %19, align 8, !tbaa !9
  %21 = call i32 (ptr, ptr, ...) @fprintf(ptr noundef %17, ptr noundef @.str, ptr noundef %20) #3
  store i32 1, ptr %6, align 4, !tbaa !5
  br label %46

22:                                               ; preds = %13, %2
  %23 = load ptr, ptr %5, align 8, !tbaa !9
  %24 = getelementptr inbounds ptr, ptr %23, i64 1
  %25 = load ptr, ptr %24, align 8, !tbaa !9
  store ptr %25, ptr %7, align 8, !tbaa !9
  %26 = load ptr, ptr %5, align 8, !tbaa !9
  %27 = getelementptr inbounds ptr, ptr %26, i64 2
  %28 = load ptr, ptr %27, align 8, !tbaa !9
  store ptr %28, ptr %8, align 8, !tbaa !9
  %29 = load ptr, ptr %5, align 8, !tbaa !9
  %30 = getelementptr inbounds ptr, ptr %29, i64 3
  %31 = load ptr, ptr %30, align 8, !tbaa !9
  store ptr %31, ptr %9, align 8, !tbaa !9
  %32 = load ptr, ptr %7, align 8, !tbaa !9
  %33 = load ptr, ptr %8, align 8, !tbaa !9
  %34 = load ptr, ptr %9, align 8, !tbaa !9
  %35 = load ptr, ptr @stderr, align 8, !tbaa !9
  %36 = call i32 @run_tls_client(ptr noundef %32, ptr noundef %33, ptr noundef %34, ptr noundef %35)
  store i32 %36, ptr %10, align 4, !tbaa !5
  %37 = load i32, ptr %10, align 4, !tbaa !5
  %38 = icmp ne i32 %37, 0
  br i1 %38, label %39, label %42

39:                                               ; preds = %22
  %40 = load ptr, ptr @stderr, align 8, !tbaa !9
  %41 = call i32 (ptr, ptr, ...) @fprintf(ptr noundef %40, ptr noundef @.str.1) #3
  br label %45

42:                                               ; preds = %22
  %43 = load ptr, ptr @stderr, align 8, !tbaa !9
  %44 = call i32 (ptr, ptr, ...) @fprintf(ptr noundef %43, ptr noundef @.str.2) #3
  br label %46

45:                                               ; preds = %39
  store i32 1, ptr %6, align 4, !tbaa !5
  br label %46

46:                                               ; preds = %45, %42, %16
  %47 = load i32, ptr %6, align 4, !tbaa !5
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #3
  ret i32 %47
}

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: nounwind
declare i32 @fprintf(ptr noundef, ptr noundef, ...) #2

; Function Attrs: nounwind uwtable
declare dso_local i32 @run_tls_client(ptr noundef, ptr noundef, ptr noundef, ptr noundef) #0

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1

attributes #0 = { 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 #1 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { nounwind "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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"any pointer", !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"

@stderr = external local_unnamed_addr global ptr, align 8
@.str = external hidden unnamed_addr constant [45 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [26 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [29 x i8], align 1

; Function Attrs: nounwind uwtable
define dso_local range(i32 0, 2) i32 @main(i32 noundef %0, ptr nocapture noundef readonly %1) local_unnamed_addr #0 {
  %3 = add i32 %0, -5
  %or.cond = icmp ult i32 %3, -2
  br i1 %or.cond, label %4, label %8

4:                                                ; preds = %2
  %5 = load ptr, ptr @stderr, align 8, !tbaa !5
  %6 = load ptr, ptr %1, align 8, !tbaa !5
  %7 = tail call i32 (ptr, ptr, ...) @fprintf(ptr noundef %5, ptr noundef nonnull @.str, ptr noundef %6) #2
  br label %22

8:                                                ; preds = %2
  %9 = getelementptr inbounds i8, ptr %1, i64 8
  %10 = load ptr, ptr %9, align 8, !tbaa !5
  %11 = getelementptr inbounds i8, ptr %1, i64 16
  %12 = load ptr, ptr %11, align 8, !tbaa !5
  %13 = getelementptr inbounds i8, ptr %1, i64 24
  %14 = load ptr, ptr %13, align 8, !tbaa !5
  %15 = load ptr, ptr @stderr, align 8, !tbaa !5
  %16 = tail call i32 @run_tls_client(ptr noundef %10, ptr noundef %12, ptr noundef %14, ptr noundef %15)
  %.not = icmp eq i32 %16, 0
  %17 = load ptr, ptr @stderr, align 8, !tbaa !5
  br i1 %.not, label %20, label %18

18:                                               ; preds = %8
  %19 = tail call i32 (ptr, ptr, ...) @fprintf(ptr noundef %17, ptr noundef nonnull @.str.1) #2
  br label %22

20:                                               ; preds = %8
  %21 = tail call i32 (ptr, ptr, ...) @fprintf(ptr noundef %17, ptr noundef nonnull @.str.2) #2
  br label %22

22:                                               ; preds = %18, %20, %4
  %.0 = phi i32 [ 1, %4 ], [ 1, %18 ], [ 0, %20 ]
  ret i32 %.0
}

; Function Attrs: nofree nounwind
declare noundef i32 @fprintf(ptr nocapture noundef, ptr nocapture noundef readonly, ...) local_unnamed_addr #1

; Function Attrs: nounwind uwtable
declare dso_local i32 @run_tls_client(ptr noundef, ptr noundef, ptr noundef, ptr noundef) local_unnamed_addr #0

attributes #0 = { 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 #1 = { nofree nounwind "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 = { cold 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"}


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