; LLVM IR from Leet-Us-Code/DSA-A-Z-Practice :: Sid's Contests/Codechef contests/July Long Challenge (Chef Vs Bharat)

; 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: 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
define dso_local void @_Z18precomputeCheforasRSt6vectorIxSaIxEE(ptr noundef nonnull align 8 dereferenceable(24) %0) #1 {
  %2 = alloca ptr, align 8
  %3 = alloca i64, align 8
  %4 = alloca i64, align 8
  %5 = alloca i64, align 8
  %6 = alloca i64, align 8
  store ptr %0, ptr %2, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %3) #2
  %7 = load ptr, ptr %2, align 8, !tbaa !5
  %8 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSt6vectorIxSaIxEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %7, i64 noundef 0) #2
  store i64 0, ptr %8, align 8, !tbaa !9
  store i64 1, ptr %3, align 8, !tbaa !9
  br label %9

9:                                                ; preds = %33, %1
  %10 = load i64, ptr %3, align 8, !tbaa !9
  %11 = icmp sle i64 %10, 100001
  br i1 %11, label %12, label %36

12:                                               ; preds = %9
  call void @llvm.lifetime.start.p0(i64 8, ptr %4) #2
  %13 = load i64, ptr %3, align 8, !tbaa !9
  store i64 %13, ptr %4, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %5) #2
  %14 = load i64, ptr %4, align 8, !tbaa !9
  %15 = sdiv i64 %14, 10
  store i64 %15, ptr %5, align 8, !tbaa !9
  br label %16

16:                                               ; preds = %19, %12
  %17 = load i64, ptr %5, align 8, !tbaa !9
  %18 = icmp ne i64 %17, 0
  br i1 %18, label %19, label %28

19:                                               ; preds = %16
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #2
  %20 = load i64, ptr %5, align 8, !tbaa !9
  %21 = srem i64 %20, 10
  store i64 %21, ptr %6, align 8, !tbaa !9
  %22 = load i64, ptr %4, align 8, !tbaa !9
  %23 = mul nsw i64 %22, 10
  %24 = load i64, ptr %6, align 8, !tbaa !9
  %25 = add nsw i64 %23, %24
  store i64 %25, ptr %4, align 8, !tbaa !9
  %26 = load i64, ptr %5, align 8, !tbaa !9
  %27 = sdiv i64 %26, 10
  store i64 %27, ptr %5, align 8, !tbaa !9
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #2
  br label %16, !llvm.loop !11

28:                                               ; preds = %16
  %29 = load i64, ptr %4, align 8, !tbaa !9
  %30 = load ptr, ptr %2, align 8, !tbaa !5
  %31 = load i64, ptr %3, align 8, !tbaa !9
  %32 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSt6vectorIxSaIxEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %30, i64 noundef %31) #2
  store i64 %29, ptr %32, align 8, !tbaa !9
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #2
  call void @llvm.lifetime.end.p0(i64 8, ptr %4) #2
  br label %33

33:                                               ; preds = %28
  %34 = load i64, ptr %3, align 8, !tbaa !9
  %35 = add nsw i64 %34, 1
  store i64 %35, ptr %3, align 8, !tbaa !9
  br label %9, !llvm.loop !13

36:                                               ; preds = %9
  call void @llvm.lifetime.end.p0(i64 8, ptr %3) #2
  ret void
}

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(8) ptr @_ZNSt6vectorIxSaIxEEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) #1 align 2

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 = { 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, !10, i64 0}
!10 = !{!"long long", !7, i64 0}
!11 = distinct !{!11, !12}
!12 = !{!"llvm.loop.mustprogress"}
!13 = distinct !{!13, !12}


; 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
define dso_local void @_Z18precomputeCheforasRSt6vectorIxSaIxEE(ptr noundef nonnull align 8 dereferenceable(24) %0) local_unnamed_addr #0 {
  %2 = tail call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSt6vectorIxSaIxEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %0, i64 noundef 0) #1
  store i64 0, ptr %2, align 8, !tbaa !5
  br label %3

3:                                                ; preds = %1, %._crit_edge
  %.017 = phi i64 [ 1, %1 ], [ %10, %._crit_edge ]
  %.not14 = icmp ult i64 %.017, 10
  br i1 %.not14, label %._crit_edge, label %.lr.ph.preheader

.lr.ph.preheader:                                 ; preds = %3
  %.lhs.trunc = trunc nuw i64 %.017 to i32
  %4 = udiv i32 %.lhs.trunc, 10
  %.zext = zext nneg i32 %4 to i64
  br label %.lr.ph

.lr.ph:                                           ; preds = %.lr.ph.preheader, %.lr.ph
  %.01216 = phi i64 [ %8, %.lr.ph ], [ %.zext, %.lr.ph.preheader ]
  %.01315 = phi i64 [ %7, %.lr.ph ], [ %.017, %.lr.ph.preheader ]
  %5 = urem i64 %.01216, 10
  %6 = mul nsw i64 %.01315, 10
  %7 = add nsw i64 %5, %6
  %8 = udiv i64 %.01216, 10
  %.not = icmp ult i64 %.01216, 10
  br i1 %.not, label %._crit_edge, label %.lr.ph, !llvm.loop !9

._crit_edge:                                      ; preds = %.lr.ph, %3
  %.013.lcssa = phi i64 [ %.017, %3 ], [ %7, %.lr.ph ]
  %9 = tail call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSt6vectorIxSaIxEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %0, i64 noundef %.017) #1
  store i64 %.013.lcssa, ptr %9, align 8, !tbaa !5
  %10 = add nuw nsw i64 %.017, 1
  %exitcond.not = icmp eq i64 %10, 100002
  br i1 %exitcond.not, label %11, label %3, !llvm.loop !11

11:                                               ; preds = %._crit_edge
  ret void
}

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(8) ptr @_ZNSt6vectorIxSaIxEEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) local_unnamed_addr #0 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 = { 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 = !{!"long long", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}
!11 = distinct !{!11, !10}


; Effective O3 passes: CorrelatedValuePropagationPass,GVNPass,GlobalOptPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,ReassociatePass,SCCPPass,SROAPass,SimplifyCFGPass,TailCallElimPass