; LLVM IR from Hunterdii/GeeksforGeeks-POTD :: August 2024 GFG SOLUTION/August-23.ll (Z12leftViewUtilRSt6vectorIiSaIiEEP4NodeiRi)

; 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.Node = type { i32, ptr, ptr }

; Function Attrs: mustprogress uwtable
define dso_local void @_Z12leftViewUtilRSt6vectorIiSaIiEEP4NodeiRi(ptr noundef nonnull align 8 dereferenceable(24) %0, ptr noundef %1, i32 noundef %2, ptr noundef nonnull align 4 dereferenceable(4) %3) #0 {
  %5 = alloca ptr, align 8
  %6 = alloca ptr, align 8
  %7 = alloca i32, align 4
  %8 = alloca ptr, align 8
  store ptr %0, ptr %5, align 8, !tbaa !5
  store ptr %1, ptr %6, align 8, !tbaa !5
  store i32 %2, ptr %7, align 4, !tbaa !9
  store ptr %3, ptr %8, align 8, !tbaa !5
  %9 = load ptr, ptr %6, align 8, !tbaa !5
  %10 = icmp eq ptr %9, null
  br i1 %10, label %11, label %12

11:                                               ; preds = %4
  br label %38

12:                                               ; preds = %4
  %13 = load ptr, ptr %8, align 8, !tbaa !5
  %14 = load i32, ptr %13, align 4, !tbaa !9
  %15 = load i32, ptr %7, align 4, !tbaa !9
  %16 = icmp slt i32 %14, %15
  br i1 %16, label %17, label %23

17:                                               ; preds = %12
  %18 = load ptr, ptr %5, align 8, !tbaa !5
  %19 = load ptr, ptr %6, align 8, !tbaa !5
  %20 = getelementptr inbounds %struct.Node, ptr %19, i32 0, i32 0
  call void @_ZNSt6vectorIiSaIiEE9push_backERKi(ptr noundef nonnull align 8 dereferenceable(24) %18, ptr noundef nonnull align 4 dereferenceable(4) %20)
  %21 = load i32, ptr %7, align 4, !tbaa !9
  %22 = load ptr, ptr %8, align 8, !tbaa !5
  store i32 %21, ptr %22, align 4, !tbaa !9
  br label %23

23:                                               ; preds = %17, %12
  %24 = load ptr, ptr %5, align 8, !tbaa !5
  %25 = load ptr, ptr %6, align 8, !tbaa !5
  %26 = getelementptr inbounds %struct.Node, ptr %25, i32 0, i32 1
  %27 = load ptr, ptr %26, align 8, !tbaa !11
  %28 = load i32, ptr %7, align 4, !tbaa !9
  %29 = add nsw i32 %28, 1
  %30 = load ptr, ptr %8, align 8, !tbaa !5
  call void @_Z12leftViewUtilRSt6vectorIiSaIiEEP4NodeiRi(ptr noundef nonnull align 8 dereferenceable(24) %24, ptr noundef %27, i32 noundef %29, ptr noundef nonnull align 4 dereferenceable(4) %30)
  %31 = load ptr, ptr %5, align 8, !tbaa !5
  %32 = load ptr, ptr %6, align 8, !tbaa !5
  %33 = getelementptr inbounds %struct.Node, ptr %32, i32 0, i32 2
  %34 = load ptr, ptr %33, align 8, !tbaa !13
  %35 = load i32, ptr %7, align 4, !tbaa !9
  %36 = add nsw i32 %35, 1
  %37 = load ptr, ptr %8, align 8, !tbaa !5
  call void @_Z12leftViewUtilRSt6vectorIiSaIiEEP4NodeiRi(ptr noundef nonnull align 8 dereferenceable(24) %31, ptr noundef %34, i32 noundef %36, ptr noundef nonnull align 4 dereferenceable(4) %37)
  br label %38

38:                                               ; preds = %23, %11
  ret void
}

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt6vectorIiSaIiEE9push_backERKi(ptr noundef nonnull align 8 dereferenceable(24), ptr noundef nonnull align 4 dereferenceable(4)) #0 align 2

attributes #0 = { 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" }

!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, !10, i64 0}
!10 = !{!"int", !7, i64 0}
!11 = !{!12, !6, i64 8}
!12 = !{!"_ZTS4Node", !10, i64 0, !6, i64 8, !6, i64 16}
!13 = !{!12, !6, i64 16}


; 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 uwtable
define dso_local void @_Z12leftViewUtilRSt6vectorIiSaIiEEP4NodeiRi(ptr noundef nonnull align 8 dereferenceable(24) %0, ptr noundef %1, i32 noundef %2, ptr nocapture noundef nonnull align 4 dereferenceable(4) %3) local_unnamed_addr #0 {
  %5 = icmp eq ptr %1, null
  br i1 %5, label %tailrecurse._crit_edge, label %.lr.ph

.lr.ph:                                           ; preds = %4, %tailrecurse
  %.tr1619 = phi i32 [ %11, %tailrecurse ], [ %2, %4 ]
  %.tr1518 = phi ptr [ %13, %tailrecurse ], [ %1, %4 ]
  %6 = load i32, ptr %3, align 4, !tbaa !5
  %7 = icmp slt i32 %6, %.tr1619
  br i1 %7, label %8, label %tailrecurse

8:                                                ; preds = %.lr.ph
  tail call void @_ZNSt6vectorIiSaIiEE9push_backERKi(ptr noundef nonnull align 8 dereferenceable(24) %0, ptr noundef nonnull align 4 dereferenceable(4) %.tr1518)
  store i32 %.tr1619, ptr %3, align 4, !tbaa !5
  br label %tailrecurse

tailrecurse:                                      ; preds = %8, %.lr.ph
  %9 = getelementptr inbounds i8, ptr %.tr1518, i64 8
  %10 = load ptr, ptr %9, align 8, !tbaa !9
  %11 = add nsw i32 %.tr1619, 1
  tail call void @_Z12leftViewUtilRSt6vectorIiSaIiEEP4NodeiRi(ptr noundef nonnull align 8 dereferenceable(24) %0, ptr noundef %10, i32 noundef %11, ptr noundef nonnull align 4 dereferenceable(4) %3)
  %12 = getelementptr inbounds i8, ptr %.tr1518, i64 16
  %13 = load ptr, ptr %12, align 8, !tbaa !12
  %14 = icmp eq ptr %13, null
  br i1 %14, label %tailrecurse._crit_edge, label %.lr.ph

tailrecurse._crit_edge:                           ; preds = %tailrecurse, %4
  ret void
}

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt6vectorIiSaIiEE9push_backERKi(ptr noundef nonnull align 8 dereferenceable(24), ptr noundef nonnull align 4 dereferenceable(4)) local_unnamed_addr #0 align 2

attributes #0 = { 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" }

!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++ TBAA"}
!9 = !{!10, !11, i64 8}
!10 = !{!"_ZTS4Node", !6, i64 0, !11, i64 8, !11, i64 16}
!11 = !{!"any pointer", !7, i64 0}
!12 = !{!10, !11, i64 16}


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