; LLVM IR from holzschu/ios_system :: libarchive/libarchive/contrib (untar)

; 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"

@.str = external hidden unnamed_addr constant [2 x i8], align 1
@stderr = external global ptr, align 8
@.str.1 = external hidden unnamed_addr constant [19 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 ptr, align 8
  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 8, ptr %6) #4
  %7 = load ptr, ptr %5, align 8, !tbaa !9
  %8 = getelementptr inbounds ptr, ptr %7, i32 1
  store ptr %8, ptr %5, align 8, !tbaa !9
  br label %9

9:                                                ; preds = %31, %2
  %10 = load ptr, ptr %5, align 8, !tbaa !9
  %11 = load ptr, ptr %10, align 8, !tbaa !9
  %12 = icmp ne ptr %11, null
  br i1 %12, label %13, label %34

13:                                               ; preds = %9
  %14 = load ptr, ptr %5, align 8, !tbaa !9
  %15 = load ptr, ptr %14, align 8, !tbaa !9
  %16 = call noalias ptr @fopen(ptr noundef %15, ptr noundef @.str)
  store ptr %16, ptr %6, align 8, !tbaa !9
  %17 = load ptr, ptr %6, align 8, !tbaa !9
  %18 = icmp eq ptr %17, null
  br i1 %18, label %19, label %24

19:                                               ; preds = %13
  %20 = load ptr, ptr @stderr, align 8, !tbaa !9
  %21 = load ptr, ptr %5, align 8, !tbaa !9
  %22 = load ptr, ptr %21, align 8, !tbaa !9
  %23 = call i32 (ptr, ptr, ...) @fprintf(ptr noundef %20, ptr noundef @.str.1, ptr noundef %22) #4
  br label %30

24:                                               ; preds = %13
  %25 = load ptr, ptr %6, align 8, !tbaa !9
  %26 = load ptr, ptr %5, align 8, !tbaa !9
  %27 = load ptr, ptr %26, align 8, !tbaa !9
  call void @untar(ptr noundef %25, ptr noundef %27)
  %28 = load ptr, ptr %6, align 8, !tbaa !9
  %29 = call i32 @fclose(ptr noundef %28)
  br label %30

30:                                               ; preds = %24, %19
  br label %31

31:                                               ; preds = %30
  %32 = load ptr, ptr %5, align 8, !tbaa !9
  %33 = getelementptr inbounds ptr, ptr %32, i32 1
  store ptr %33, ptr %5, align 8, !tbaa !9
  br label %9, !llvm.loop !11

34:                                               ; preds = %9
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #4
  ret i32 0
}

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

declare noalias ptr @fopen(ptr noundef, ptr noundef) #2

; Function Attrs: nounwind
declare i32 @fprintf(ptr noundef, ptr noundef, ...) #3

; Function Attrs: nounwind uwtable
declare hidden void @untar(ptr noundef, ptr noundef) #0

declare i32 @fclose(ptr noundef) #2

; 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 = { "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 "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 }

!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}
!11 = distinct !{!11, !12}
!12 = !{!"llvm.loop.mustprogress"}


; 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"

@.str = external hidden unnamed_addr constant [2 x i8], align 1
@stderr = external local_unnamed_addr global ptr, align 8
@.str.1 = external hidden unnamed_addr constant [19 x i8], align 1

; Function Attrs: nounwind uwtable
define dso_local noundef i32 @main(i32 noundef %0, ptr nocapture noundef readonly %1) local_unnamed_addr #0 {
  %.011 = getelementptr inbounds i8, ptr %1, i64 8
  %3 = load ptr, ptr %.011, align 8, !tbaa !5
  %.not12 = icmp eq ptr %3, null
  br i1 %.not12, label %._crit_edge, label %.lr.ph

.lr.ph:                                           ; preds = %2, %14
  %4 = phi ptr [ %15, %14 ], [ %3, %2 ]
  %.013 = phi ptr [ %.0, %14 ], [ %.011, %2 ]
  %5 = tail call noalias ptr @fopen(ptr noundef nonnull %4, ptr noundef nonnull @.str)
  %6 = icmp eq ptr %5, null
  br i1 %6, label %7, label %11

7:                                                ; preds = %.lr.ph
  %8 = load ptr, ptr @stderr, align 8, !tbaa !5
  %9 = load ptr, ptr %.013, align 8, !tbaa !5
  %10 = tail call i32 (ptr, ptr, ...) @fprintf(ptr noundef %8, ptr noundef nonnull @.str.1, ptr noundef %9) #2
  br label %14

11:                                               ; preds = %.lr.ph
  %12 = load ptr, ptr %.013, align 8, !tbaa !5
  tail call void @untar(ptr noundef nonnull %5, ptr noundef %12)
  %13 = tail call i32 @fclose(ptr noundef nonnull %5)
  br label %14

14:                                               ; preds = %7, %11
  %.0 = getelementptr inbounds i8, ptr %.013, i64 8
  %15 = load ptr, ptr %.0, align 8, !tbaa !5
  %.not = icmp eq ptr %15, null
  br i1 %.not, label %._crit_edge, label %.lr.ph, !llvm.loop !9

._crit_edge:                                      ; preds = %14, %2
  ret i32 0
}

; Function Attrs: nofree nounwind
declare noalias noundef ptr @fopen(ptr nocapture noundef readonly, ptr nocapture noundef readonly) local_unnamed_addr #1

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

; Function Attrs: nounwind uwtable
declare hidden void @untar(ptr noundef, ptr noundef) local_unnamed_addr #0

; Function Attrs: nofree nounwind
declare noundef i32 @fclose(ptr nocapture noundef) local_unnamed_addr #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 = { 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"}
!9 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: EarlyCSEPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass