; LLVM IR from edualgo/dsa-code-store :: Generic-Tree/Generic-Tree-master/TreeSource/main.ll (Z13max_data_nodeP8TreeNodeIiE)

; 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"

%class.TreeNode = type { i32, %"class.std::vector" }
%"class.std::vector" = type { %"struct.std::_Vector_base" }
%"struct.std::_Vector_base" = type { %"struct.std::_Vector_base<TreeNode<int> *, std::allocator<TreeNode<int> *>>::_Vector_impl" }
%"struct.std::_Vector_base<TreeNode<int> *, std::allocator<TreeNode<int> *>>::_Vector_impl" = type { %"struct.std::_Vector_base<TreeNode<int> *, std::allocator<TreeNode<int> *>>::_Vector_impl_data" }
%"struct.std::_Vector_base<TreeNode<int> *, std::allocator<TreeNode<int> *>>::_Vector_impl_data" = type { ptr, ptr, ptr }

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i64 @_ZNKSt6vectorIP8TreeNodeIiESaIS2_EE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24)) #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(8) ptr @_ZNSt6vectorIP8TreeNodeIiESaIS2_EEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) #1 align 2

; Function Attrs: mustprogress uwtable
define dso_local noundef i32 @_Z13max_data_nodeP8TreeNodeIiE(ptr noundef %0) #2 {
  %2 = alloca ptr, align 8
  %3 = alloca i32, align 4
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  store ptr %0, ptr %2, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #3
  %6 = load ptr, ptr %2, align 8, !tbaa !5
  %7 = getelementptr inbounds %class.TreeNode, ptr %6, i32 0, i32 0
  %8 = load i32, ptr %7, align 8, !tbaa !9
  store i32 %8, ptr %3, align 4, !tbaa !16
  call void @llvm.lifetime.start.p0(i64 4, ptr %4) #3
  store i32 0, ptr %4, align 4, !tbaa !16
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #3
  store i32 0, ptr %5, align 4, !tbaa !16
  br label %9

9:                                                ; preds = %31, %1
  %10 = load i32, ptr %5, align 4, !tbaa !16
  %11 = sext i32 %10 to i64
  %12 = load ptr, ptr %2, align 8, !tbaa !5
  %13 = getelementptr inbounds %class.TreeNode, ptr %12, i32 0, i32 1
  %14 = call noundef i64 @_ZNKSt6vectorIP8TreeNodeIiESaIS2_EE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) %13) #3
  %15 = icmp ult i64 %11, %14
  br i1 %15, label %17, label %16

16:                                               ; preds = %9
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #3
  br label %34

17:                                               ; preds = %9
  %18 = load ptr, ptr %2, align 8, !tbaa !5
  %19 = getelementptr inbounds %class.TreeNode, ptr %18, i32 0, i32 1
  %20 = load i32, ptr %5, align 4, !tbaa !16
  %21 = sext i32 %20 to i64
  %22 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSt6vectorIP8TreeNodeIiESaIS2_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %19, i64 noundef %21) #3
  %23 = load ptr, ptr %22, align 8, !tbaa !5
  %24 = call noundef i32 @_Z13max_data_nodeP8TreeNodeIiE(ptr noundef %23)
  store i32 %24, ptr %4, align 4, !tbaa !16
  %25 = load i32, ptr %4, align 4, !tbaa !16
  %26 = load i32, ptr %3, align 4, !tbaa !16
  %27 = icmp sgt i32 %25, %26
  br i1 %27, label %28, label %30

28:                                               ; preds = %17
  %29 = load i32, ptr %4, align 4, !tbaa !16
  store i32 %29, ptr %3, align 4, !tbaa !16
  br label %30

30:                                               ; preds = %28, %17
  br label %31

31:                                               ; preds = %30
  %32 = load i32, ptr %5, align 4, !tbaa !16
  %33 = add nsw i32 %32, 1
  store i32 %33, ptr %5, align 4, !tbaa !16
  br label %9, !llvm.loop !17

34:                                               ; preds = %16
  %35 = load i32, ptr %3, align 4, !tbaa !16
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #3
  ret i32 %35
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { mustprogress 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 = { mustprogress 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++ TBAA"}
!9 = !{!10, !11, i64 0}
!10 = !{!"_ZTS8TreeNodeIiE", !11, i64 0, !12, i64 8}
!11 = !{!"int", !7, i64 0}
!12 = !{!"_ZTSSt6vectorIP8TreeNodeIiESaIS2_EE", !13, i64 0}
!13 = !{!"_ZTSSt12_Vector_baseIP8TreeNodeIiESaIS2_EE", !14, i64 0}
!14 = !{!"_ZTSNSt12_Vector_baseIP8TreeNodeIiESaIS2_EE12_Vector_implE", !15, i64 0}
!15 = !{!"_ZTSNSt12_Vector_baseIP8TreeNodeIiESaIS2_EE17_Vector_impl_dataE", !6, i64 0, !6, i64 8, !6, i64 16}
!16 = !{!11, !11, i64 0}
!17 = distinct !{!17, !18}
!18 = !{!"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"

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i64 @_ZNKSt6vectorIP8TreeNodeIiESaIS2_EE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24)) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(8) ptr @_ZNSt6vectorIP8TreeNodeIiESaIS2_EEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress nounwind uwtable
define dso_local noundef i32 @_Z13max_data_nodeP8TreeNodeIiE(ptr noundef %0) local_unnamed_addr #0 {
  %2 = load i32, ptr %0, align 8, !tbaa !5
  %3 = getelementptr inbounds i8, ptr %0, i64 8
  %4 = tail call noundef i64 @_ZNKSt6vectorIP8TreeNodeIiESaIS2_EE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) %3) #2
  %.not = icmp eq i64 %4, 0
  br i1 %.not, label %._crit_edge, label %.lr.ph

._crit_edge:                                      ; preds = %.lr.ph, %1
  %.09.lcssa = phi i32 [ %2, %1 ], [ %spec.select, %.lr.ph ]
  ret i32 %.09.lcssa

.lr.ph:                                           ; preds = %1, %.lr.ph
  %indvars.iv = phi i64 [ %indvars.iv.next, %.lr.ph ], [ 0, %1 ]
  %.0912 = phi i32 [ %spec.select, %.lr.ph ], [ %2, %1 ]
  %5 = tail call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSt6vectorIP8TreeNodeIiESaIS2_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %3, i64 noundef %indvars.iv) #2
  %6 = load ptr, ptr %5, align 8, !tbaa !15
  %7 = tail call noundef i32 @_Z13max_data_nodeP8TreeNodeIiE(ptr noundef %6)
  %spec.select = tail call i32 @llvm.smax.i32(i32 %7, i32 %.0912)
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %8 = tail call noundef i64 @_ZNKSt6vectorIP8TreeNodeIiESaIS2_EE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) %3) #2
  %9 = icmp ugt i64 %8, %indvars.iv.next
  br i1 %9, label %.lr.ph, label %._crit_edge, !llvm.loop !16
}

; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare i32 @llvm.smax.i32(i32, i32) #1

attributes #0 = { mustprogress 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 speculatable willreturn memory(none) }
attributes #2 = { 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, !7, i64 0}
!6 = !{!"_ZTS8TreeNodeIiE", !7, i64 0, !10, i64 8}
!7 = !{!"int", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C++ TBAA"}
!10 = !{!"_ZTSSt6vectorIP8TreeNodeIiESaIS2_EE", !11, i64 0}
!11 = !{!"_ZTSSt12_Vector_baseIP8TreeNodeIiESaIS2_EE", !12, i64 0}
!12 = !{!"_ZTSNSt12_Vector_baseIP8TreeNodeIiESaIS2_EE12_Vector_implE", !13, i64 0}
!13 = !{!"_ZTSNSt12_Vector_baseIP8TreeNodeIiESaIS2_EE17_Vector_impl_dataE", !14, i64 0, !14, i64 8, !14, i64 16}
!14 = !{!"any pointer", !8, i64 0}
!15 = !{!14, !14, i64 0}
!16 = distinct !{!16, !17}
!17 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: EarlyCSEPass,GVNPass,GlobalOptPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LICMPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass