; LLVM IR from h-ssiqueira/Sort_Algorithms :: src/insertion (AVLTreeSort)

; 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.AVLT = type { i32, i16, ptr, ptr }

; Function Attrs: nounwind uwtable
define dso_local signext i16 @height(ptr noundef %0) #0 {
  %2 = alloca i16, align 2
  %3 = alloca ptr, align 8
  %4 = alloca i16, align 2
  %5 = alloca i16, align 2
  %6 = alloca i32, align 4
  store ptr %0, ptr %3, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 2, ptr %4) #3
  call void @llvm.lifetime.start.p0(i64 2, ptr %5) #3
  %7 = load ptr, ptr %3, align 8, !tbaa !5
  %8 = call zeroext i1 @isEmpty(ptr noundef %7)
  br i1 %8, label %9, label %10

9:                                                ; preds = %1
  store i16 0, ptr %2, align 2
  store i32 1, ptr %6, align 4
  br label %35

10:                                               ; preds = %1
  %11 = load ptr, ptr %3, align 8, !tbaa !5
  %12 = getelementptr inbounds %struct.AVLT, ptr %11, i32 0, i32 3
  %13 = load ptr, ptr %12, align 8, !tbaa !9
  %14 = call signext i16 @height(ptr noundef %13)
  store i16 %14, ptr %4, align 2, !tbaa !13
  %15 = load ptr, ptr %3, align 8, !tbaa !5
  %16 = getelementptr inbounds %struct.AVLT, ptr %15, i32 0, i32 2
  %17 = load ptr, ptr %16, align 8, !tbaa !14
  %18 = call signext i16 @height(ptr noundef %17)
  store i16 %18, ptr %5, align 2, !tbaa !13
  %19 = load i16, ptr %5, align 2, !tbaa !13
  %20 = sext i16 %19 to i32
  %21 = load i16, ptr %4, align 2, !tbaa !13
  %22 = sext i16 %21 to i32
  %23 = icmp sgt i32 %20, %22
  br i1 %23, label %24, label %28

24:                                               ; preds = %10
  %25 = load i16, ptr %5, align 2, !tbaa !13
  %26 = sext i16 %25 to i32
  %27 = add nsw i32 %26, 1
  br label %32

28:                                               ; preds = %10
  %29 = load i16, ptr %4, align 2, !tbaa !13
  %30 = sext i16 %29 to i32
  %31 = add nsw i32 %30, 1
  br label %32

32:                                               ; preds = %28, %24
  %33 = phi i32 [ %27, %24 ], [ %31, %28 ]
  %34 = trunc i32 %33 to i16
  store i16 %34, ptr %2, align 2
  store i32 1, ptr %6, align 4
  br label %35

35:                                               ; preds = %32, %9
  call void @llvm.lifetime.end.p0(i64 2, ptr %5) #3
  call void @llvm.lifetime.end.p0(i64 2, ptr %4) #3
  %36 = load i16, ptr %2, align 2
  ret i16 %36
}

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

; Function Attrs: inlinehint nounwind uwtable
declare zeroext i1 @isEmpty(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 = { inlinehint 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 #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 = !{!"any pointer", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = !{!10, !6, i64 16}
!10 = !{!"AVLT", !11, i64 0, !12, i64 4, !6, i64 8, !6, i64 16}
!11 = !{!"int", !7, i64 0}
!12 = !{!"short", !7, i64 0}
!13 = !{!12, !12, i64 0}
!14 = !{!10, !6, i64 8}


; 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: nounwind uwtable
define dso_local signext i16 @height(ptr noundef %0) local_unnamed_addr #0 {
  %2 = tail call zeroext i1 @isEmpty(ptr noundef %0)
  br i1 %2, label %common.ret7, label %3

common.ret7:                                      ; preds = %1, %3
  %common.ret7.op = phi i16 [ %10, %3 ], [ 0, %1 ]
  ret i16 %common.ret7.op

3:                                                ; preds = %1
  %4 = getelementptr inbounds i8, ptr %0, i64 16
  %5 = load ptr, ptr %4, align 8, !tbaa !5
  %6 = tail call signext i16 @height(ptr noundef %5)
  %7 = getelementptr inbounds i8, ptr %0, i64 8
  %8 = load ptr, ptr %7, align 8, !tbaa !12
  %9 = tail call signext i16 @height(ptr noundef %8)
  %.v.v = tail call i16 @llvm.smax.i16(i16 %9, i16 %6)
  %10 = add i16 %.v.v, 1
  br label %common.ret7
}

; Function Attrs: inlinehint nounwind uwtable
declare zeroext i1 @isEmpty(ptr noundef) local_unnamed_addr #1

; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare i16 @llvm.smax.i16(i16, i16) #2

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 = { inlinehint 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 #2 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }

!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, !11, i64 16}
!6 = !{!"AVLT", !7, i64 0, !10, i64 4, !11, i64 8, !11, i64 16}
!7 = !{!"int", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!"short", !8, i64 0}
!11 = !{!"any pointer", !8, i64 0}
!12 = !{!6, !11, i64 8}


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