; LLVM IR from amritansh22/Data-Structures-and-Algorithms-in-cpp :: Towerofhanoi_usingStack.ll (Z3tohiRSt5stackIiSt5dequeIiSaIiEEES4_S4_)

; 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"

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt5stackIiSt5dequeIiSaIiEEE3topEv(ptr noundef nonnull align 8 dereferenceable(80)) #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt5stackIiSt5dequeIiSaIiEEE3popEv(ptr noundef nonnull align 8 dereferenceable(80)) #0 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_Z12print_stacksv() #1

; Function Attrs: mustprogress uwtable
define dso_local void @_Z3tohiRSt5stackIiSt5dequeIiSaIiEEES4_S4_(i32 noundef %0, ptr noundef nonnull align 8 dereferenceable(80) %1, ptr noundef nonnull align 8 dereferenceable(80) %2, ptr noundef nonnull align 8 dereferenceable(80) %3) #1 {
  %5 = alloca i32, align 4
  %6 = alloca ptr, align 8
  %7 = alloca ptr, align 8
  %8 = alloca ptr, align 8
  store i32 %0, ptr %5, align 4, !tbaa !5
  store ptr %1, ptr %6, align 8, !tbaa !9
  store ptr %2, ptr %7, align 8, !tbaa !9
  store ptr %3, ptr %8, align 8, !tbaa !9
  %9 = load i32, ptr %5, align 4, !tbaa !5
  %10 = icmp sle i32 %9, 1
  br i1 %10, label %11, label %16

11:                                               ; preds = %4
  %12 = load ptr, ptr %8, align 8, !tbaa !9
  %13 = load ptr, ptr %6, align 8, !tbaa !9
  %14 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt5stackIiSt5dequeIiSaIiEEE3topEv(ptr noundef nonnull align 8 dereferenceable(80) %13)
  call void @_ZNSt5stackIiSt5dequeIiSaIiEEE4pushERKi(ptr noundef nonnull align 8 dereferenceable(80) %12, ptr noundef nonnull align 4 dereferenceable(4) %14)
  %15 = load ptr, ptr %6, align 8, !tbaa !9
  call void @_ZNSt5stackIiSt5dequeIiSaIiEEE3popEv(ptr noundef nonnull align 8 dereferenceable(80) %15)
  call void @_Z12print_stacksv()
  br label %31

16:                                               ; preds = %4
  %17 = load i32, ptr %5, align 4, !tbaa !5
  %18 = sub nsw i32 %17, 1
  %19 = load ptr, ptr %6, align 8, !tbaa !9
  %20 = load ptr, ptr %8, align 8, !tbaa !9
  %21 = load ptr, ptr %7, align 8, !tbaa !9
  call void @_Z3tohiRSt5stackIiSt5dequeIiSaIiEEES4_S4_(i32 noundef %18, ptr noundef nonnull align 8 dereferenceable(80) %19, ptr noundef nonnull align 8 dereferenceable(80) %20, ptr noundef nonnull align 8 dereferenceable(80) %21)
  %22 = load ptr, ptr %8, align 8, !tbaa !9
  %23 = load ptr, ptr %6, align 8, !tbaa !9
  %24 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt5stackIiSt5dequeIiSaIiEEE3topEv(ptr noundef nonnull align 8 dereferenceable(80) %23)
  call void @_ZNSt5stackIiSt5dequeIiSaIiEEE4pushERKi(ptr noundef nonnull align 8 dereferenceable(80) %22, ptr noundef nonnull align 4 dereferenceable(4) %24)
  %25 = load ptr, ptr %6, align 8, !tbaa !9
  call void @_ZNSt5stackIiSt5dequeIiSaIiEEE3popEv(ptr noundef nonnull align 8 dereferenceable(80) %25)
  call void @_Z12print_stacksv()
  %26 = load i32, ptr %5, align 4, !tbaa !5
  %27 = sub nsw i32 %26, 1
  %28 = load ptr, ptr %7, align 8, !tbaa !9
  %29 = load ptr, ptr %6, align 8, !tbaa !9
  %30 = load ptr, ptr %8, align 8, !tbaa !9
  call void @_Z3tohiRSt5stackIiSt5dequeIiSaIiEEES4_S4_(i32 noundef %27, ptr noundef nonnull align 8 dereferenceable(80) %28, ptr noundef nonnull align 8 dereferenceable(80) %29, ptr noundef nonnull align 8 dereferenceable(80) %30)
  br label %31

31:                                               ; preds = %16, %11
  ret void
}

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt5stackIiSt5dequeIiSaIiEEE4pushERKi(ptr noundef nonnull align 8 dereferenceable(80), ptr noundef nonnull align 4 dereferenceable(4)) #1 align 2

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 = { 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, !10, i64 0}
!10 = !{!"any pointer", !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 nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt5stackIiSt5dequeIiSaIiEEE3topEv(ptr noundef nonnull align 8 dereferenceable(80)) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt5stackIiSt5dequeIiSaIiEEE3popEv(ptr noundef nonnull align 8 dereferenceable(80)) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_Z12print_stacksv() local_unnamed_addr #1

; Function Attrs: mustprogress uwtable
define dso_local void @_Z3tohiRSt5stackIiSt5dequeIiSaIiEEES4_S4_(i32 noundef %0, ptr noundef nonnull align 8 dereferenceable(80) %1, ptr noundef nonnull align 8 dereferenceable(80) %2, ptr noundef nonnull align 8 dereferenceable(80) %3) local_unnamed_addr #1 {
  %5 = icmp slt i32 %0, 2
  br i1 %5, label %tailrecurse._crit_edge, label %tailrecurse

tailrecurse._crit_edge:                           ; preds = %tailrecurse, %4
  %.tr14.lcssa = phi ptr [ %1, %4 ], [ %.tr1519, %tailrecurse ]
  %6 = tail call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt5stackIiSt5dequeIiSaIiEEE3topEv(ptr noundef nonnull align 8 dereferenceable(80) %.tr14.lcssa)
  tail call void @_ZNSt5stackIiSt5dequeIiSaIiEEE4pushERKi(ptr noundef nonnull align 8 dereferenceable(80) %3, ptr noundef nonnull align 4 dereferenceable(4) %6)
  tail call void @_ZNSt5stackIiSt5dequeIiSaIiEEE3popEv(ptr noundef nonnull align 8 dereferenceable(80) %.tr14.lcssa)
  tail call void @_Z12print_stacksv()
  ret void

tailrecurse:                                      ; preds = %4, %tailrecurse
  %.tr1519 = phi ptr [ %.tr1418, %tailrecurse ], [ %2, %4 ]
  %.tr1418 = phi ptr [ %.tr1519, %tailrecurse ], [ %1, %4 ]
  %.tr17 = phi i32 [ %7, %tailrecurse ], [ %0, %4 ]
  %7 = add nsw i32 %.tr17, -1
  tail call void @_Z3tohiRSt5stackIiSt5dequeIiSaIiEEES4_S4_(i32 noundef %7, ptr noundef nonnull align 8 dereferenceable(80) %.tr1418, ptr noundef nonnull align 8 dereferenceable(80) %3, ptr noundef nonnull align 8 dereferenceable(80) %.tr1519)
  %8 = tail call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt5stackIiSt5dequeIiSaIiEEE3topEv(ptr noundef nonnull align 8 dereferenceable(80) %.tr1418)
  tail call void @_ZNSt5stackIiSt5dequeIiSaIiEEE4pushERKi(ptr noundef nonnull align 8 dereferenceable(80) %3, ptr noundef nonnull align 4 dereferenceable(4) %8)
  tail call void @_ZNSt5stackIiSt5dequeIiSaIiEEE3popEv(ptr noundef nonnull align 8 dereferenceable(80) %.tr1418)
  tail call void @_Z12print_stacksv()
  %9 = icmp ult i32 %.tr17, 3
  br i1 %9, label %tailrecurse._crit_edge, label %tailrecurse
}

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt5stackIiSt5dequeIiSaIiEEE4pushERKi(ptr noundef nonnull align 8 dereferenceable(80), ptr noundef nonnull align 4 dereferenceable(4)) local_unnamed_addr #1 align 2

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 = { 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)"}


; Effective O3 passes: CorrelatedValuePropagationPass,EarlyCSEPass,GVNPass,GlobalOptPass,IPSCCPPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,SROAPass,SimplifyCFGPass,TailCallElimPass