; LLVM IR from HarshCasper/NeoAlgo :: C/other (Tower_Of_Hanoi)

; 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"

@.str = external hidden unnamed_addr constant [10 x i8], align 1

; Function Attrs: nounwind uwtable
define dso_local void @TowerOfHanoi(i32 noundef %0, i32 noundef %1, i32 noundef %2, i32 noundef %3) #0 {
  %5 = alloca i32, align 4
  %6 = alloca i32, align 4
  %7 = alloca i32, align 4
  %8 = alloca i32, align 4
  store i32 %0, ptr %5, align 4, !tbaa !5
  store i32 %1, ptr %6, align 4, !tbaa !5
  store i32 %2, ptr %7, align 4, !tbaa !5
  store i32 %3, ptr %8, align 4, !tbaa !5
  %9 = load i32, ptr %5, align 4, !tbaa !5
  %10 = icmp ne i32 %9, 0
  br i1 %10, label %11, label %25

11:                                               ; preds = %4
  %12 = load i32, ptr %5, align 4, !tbaa !5
  %13 = sub nsw i32 %12, 1
  %14 = load i32, ptr %6, align 4, !tbaa !5
  %15 = load i32, ptr %8, align 4, !tbaa !5
  %16 = load i32, ptr %7, align 4, !tbaa !5
  call void @TowerOfHanoi(i32 noundef %13, i32 noundef %14, i32 noundef %15, i32 noundef %16)
  %17 = load i32, ptr %6, align 4, !tbaa !5
  %18 = load i32, ptr %7, align 4, !tbaa !5
  %19 = call i32 (ptr, ...) @printf(ptr noundef @.str, i32 noundef %17, i32 noundef %18)
  %20 = load i32, ptr %5, align 4, !tbaa !5
  %21 = sub nsw i32 %20, 1
  %22 = load i32, ptr %8, align 4, !tbaa !5
  %23 = load i32, ptr %7, align 4, !tbaa !5
  %24 = load i32, ptr %6, align 4, !tbaa !5
  call void @TowerOfHanoi(i32 noundef %21, i32 noundef %22, i32 noundef %23, i32 noundef %24)
  br label %25

25:                                               ; preds = %11, %4
  ret void
}

declare i32 @printf(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 = { "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/C++ TBAA"}


; 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"

@.str = external hidden unnamed_addr constant [10 x i8], align 1

; Function Attrs: nofree nounwind uwtable
define dso_local void @TowerOfHanoi(i32 noundef %0, i32 noundef %1, i32 noundef %2, i32 noundef %3) local_unnamed_addr #0 {
  %.not14 = icmp eq i32 %0, 0
  br i1 %.not14, label %tailrecurse._crit_edge, label %tailrecurse

tailrecurse:                                      ; preds = %4, %tailrecurse
  %.tr1317 = phi i32 [ %.tr1116, %tailrecurse ], [ %3, %4 ]
  %.tr1116 = phi i32 [ %.tr1317, %tailrecurse ], [ %1, %4 ]
  %.tr15 = phi i32 [ %5, %tailrecurse ], [ %0, %4 ]
  %5 = add nsw i32 %.tr15, -1
  tail call void @TowerOfHanoi(i32 noundef %5, i32 noundef %.tr1116, i32 noundef %.tr1317, i32 noundef %2)
  %6 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str, i32 noundef %.tr1116, i32 noundef %2)
  %.not = icmp eq i32 %5, 0
  br i1 %.not, label %tailrecurse._crit_edge, label %tailrecurse

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

; Function Attrs: nofree nounwind
declare noundef i32 @printf(ptr nocapture noundef readonly, ...) local_unnamed_addr #1

attributes #0 = { nofree 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 = { nofree nounwind "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: EarlyCSEPass,GlobalOptPass,IPSCCPPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass