; LLVM IR from ksw2000/Data-Structure-in-C :: Tree (AVL-Tree)

; 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.person = type { [32 x i8], i32 }

; Function Attrs: nounwind uwtable
define dso_local i32 @personCmpFunc(ptr noundef %0, ptr noundef %1) #0 {
  %3 = alloca i32, 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
  %6 = load ptr, ptr %4, align 8, !tbaa !5
  %7 = getelementptr inbounds %struct.person, ptr %6, i32 0, i32 1
  %8 = load i32, ptr %7, align 4, !tbaa !9
  %9 = load ptr, ptr %5, align 8, !tbaa !5
  %10 = getelementptr inbounds %struct.person, ptr %9, i32 0, i32 1
  %11 = load i32, ptr %10, align 4, !tbaa !9
  %12 = icmp slt i32 %8, %11
  br i1 %12, label %13, label %14

13:                                               ; preds = %2
  store i32 -1, ptr %3, align 4
  br label %34

14:                                               ; preds = %2
  %15 = load ptr, ptr %4, align 8, !tbaa !5
  %16 = getelementptr inbounds %struct.person, ptr %15, i32 0, i32 1
  %17 = load i32, ptr %16, align 4, !tbaa !9
  %18 = load ptr, ptr %5, align 8, !tbaa !5
  %19 = getelementptr inbounds %struct.person, ptr %18, i32 0, i32 1
  %20 = load i32, ptr %19, align 4, !tbaa !9
  %21 = icmp sgt i32 %17, %20
  br i1 %21, label %22, label %23

22:                                               ; preds = %14
  store i32 1, ptr %3, align 4
  br label %34

23:                                               ; preds = %14
  %24 = load ptr, ptr %4, align 8, !tbaa !5
  %25 = getelementptr inbounds %struct.person, ptr %24, i32 0, i32 0
  %26 = getelementptr inbounds [32 x i8], ptr %25, i64 0, i64 0
  %27 = load ptr, ptr %5, align 8, !tbaa !5
  %28 = getelementptr inbounds %struct.person, ptr %27, i32 0, i32 0
  %29 = getelementptr inbounds [32 x i8], ptr %28, i64 0, i64 0
  %30 = call i32 @strcmp(ptr noundef %26, ptr noundef %29) #2
  %31 = icmp ne i32 %30, 0
  br i1 %31, label %33, label %32

32:                                               ; preds = %23
  store i32 0, ptr %3, align 4
  br label %34

33:                                               ; preds = %23
  store i32 1, ptr %3, align 4
  br label %34

34:                                               ; preds = %33, %32, %22, %13
  %35 = load i32, ptr %3, align 4
  ret i32 %35
}

; Function Attrs: nounwind willreturn memory(read)
declare i32 @strcmp(ptr noundef, ptr noundef) #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 = { 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 = { 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, !11, i64 32}
!10 = !{!"person", !7, i64 0, !11, i64 32}
!11 = !{!"int", !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"

; Function Attrs: mustprogress nofree nounwind willreturn memory(argmem: read) uwtable
define dso_local range(i32 -1, 2) i32 @personCmpFunc(ptr nocapture noundef readonly %0, ptr nocapture noundef readonly %1) local_unnamed_addr #0 {
  %3 = getelementptr inbounds i8, ptr %0, i64 32
  %4 = load i32, ptr %3, align 4, !tbaa !5
  %5 = getelementptr inbounds i8, ptr %1, i64 32
  %6 = load i32, ptr %5, align 4, !tbaa !5
  %7 = icmp slt i32 %4, %6
  br i1 %7, label %12, label %8

8:                                                ; preds = %2
  %9 = icmp sgt i32 %4, %6
  br i1 %9, label %12, label %10

10:                                               ; preds = %8
  %11 = tail call i32 @strcmp(ptr noundef nonnull dereferenceable(1) %0, ptr noundef nonnull dereferenceable(1) %1) #2
  %.not = icmp ne i32 %11, 0
  %. = zext i1 %.not to i32
  br label %12

12:                                               ; preds = %10, %8, %2
  %.0 = phi i32 [ -1, %2 ], [ 1, %8 ], [ %., %10 ]
  ret i32 %.0
}

; Function Attrs: mustprogress nofree nounwind willreturn memory(argmem: read)
declare i32 @strcmp(ptr nocapture noundef, ptr nocapture noundef) local_unnamed_addr #1

attributes #0 = { mustprogress nofree nounwind willreturn memory(argmem: read) 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 = { 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 = { 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, !9, i64 32}
!6 = !{!"person", !7, i64 0, !9, i64 32}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = !{!"int", !7, i64 0}


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