; LLVM IR from bqi343/cp-notebook :: Contests/Other Solutions/VT HSPC/2017 (Weight)

; 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.std::basic_istream" = type { ptr, i64, %"class.std::basic_ios" }
%"class.std::basic_ios" = type { %"class.std::ios_base", ptr, i8, i8, ptr, ptr, ptr, ptr }
%"class.std::ios_base" = type { ptr, i64, i64, i32, i32, i32, ptr, %"struct.std::ios_base::_Words", [8 x %"struct.std::ios_base::_Words"], i32, ptr, %"class.std::locale" }
%"struct.std::ios_base::_Words" = type { ptr, i64 }
%"class.std::locale" = type { ptr }
%"class.std::basic_ostream" = type { ptr, %"class.std::basic_ios" }

@l = external dso_local global i32, align 4
@w = external dso_local global i32, align 4
@num = external dso_local global [40 x i32], align 16
@_ZSt3cin = external global %"class.std::basic_istream", align 8
@_ZSt4cout = external global %"class.std::basic_ostream", align 8
@.str = external hidden unnamed_addr constant [11 x i8], align 1

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() #0 {
  %1 = alloca i32, align 4
  %2 = alloca i32, align 4
  %3 = alloca i32, align 4
  store i32 0, ptr %1, align 4
  %4 = call noundef zeroext i1 @_ZNSt8ios_base15sync_with_stdioEb(i1 noundef zeroext false)
  %5 = load ptr, ptr @_ZSt3cin, align 8, !tbaa !5
  %6 = getelementptr i8, ptr %5, i64 -24
  %7 = load i64, ptr %6, align 8
  %8 = getelementptr inbounds i8, ptr @_ZSt3cin, i64 %7
  %9 = call noundef ptr @_ZNSt9basic_iosIcSt11char_traitsIcEE3tieEPSo(ptr noundef nonnull align 8 dereferenceable(264) %8, ptr noundef null)
  %10 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 4 dereferenceable(4) @l)
  %11 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) %10, ptr noundef nonnull align 4 dereferenceable(4) @w)
  %12 = load i32, ptr @w, align 4, !tbaa !8
  %13 = load i32, ptr @l, align 4, !tbaa !8
  %14 = icmp slt i32 %12, %13
  br i1 %14, label %20, label %15

15:                                               ; preds = %0
  %16 = load i32, ptr @w, align 4, !tbaa !8
  %17 = load i32, ptr @l, align 4, !tbaa !8
  %18 = mul nsw i32 26, %17
  %19 = icmp sgt i32 %16, %18
  br i1 %19, label %20, label %22

20:                                               ; preds = %15, %0
  %21 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, ptr noundef @.str)
  store i32 0, ptr %1, align 4
  br label %57

22:                                               ; preds = %15
  call void @llvm.lifetime.start.p0(i64 4, ptr %2) #5
  store i32 0, ptr %2, align 4, !tbaa !8
  br label %23

23:                                               ; preds = %36, %22
  %24 = load i32, ptr %2, align 4, !tbaa !8
  %25 = load i32, ptr @w, align 4, !tbaa !8
  %26 = icmp slt i32 %24, %25
  br i1 %26, label %28, label %27

27:                                               ; preds = %23
  call void @llvm.lifetime.end.p0(i64 4, ptr %2) #5
  br label %39

28:                                               ; preds = %23
  %29 = load i32, ptr %2, align 4, !tbaa !8
  %30 = load i32, ptr @l, align 4, !tbaa !8
  %31 = srem i32 %29, %30
  %32 = sext i32 %31 to i64
  %33 = getelementptr inbounds [40 x i32], ptr @num, i64 0, i64 %32
  %34 = load i32, ptr %33, align 4, !tbaa !8
  %35 = add nsw i32 %34, 1
  store i32 %35, ptr %33, align 4, !tbaa !8
  br label %36

36:                                               ; preds = %28
  %37 = load i32, ptr %2, align 4, !tbaa !8
  %38 = add nsw i32 %37, 1
  store i32 %38, ptr %2, align 4, !tbaa !8
  br label %23, !llvm.loop !11

39:                                               ; preds = %27
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #5
  store i32 0, ptr %3, align 4, !tbaa !8
  br label %40

40:                                               ; preds = %54, %39
  %41 = load i32, ptr %3, align 4, !tbaa !8
  %42 = load i32, ptr @l, align 4, !tbaa !8
  %43 = icmp slt i32 %41, %42
  br i1 %43, label %45, label %44

44:                                               ; preds = %40
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #5
  br label %57

45:                                               ; preds = %40
  %46 = load i32, ptr %3, align 4, !tbaa !8
  %47 = sext i32 %46 to i64
  %48 = getelementptr inbounds [40 x i32], ptr @num, i64 0, i64 %47
  %49 = load i32, ptr %48, align 4, !tbaa !8
  %50 = sub nsw i32 %49, 1
  %51 = add nsw i32 %50, 97
  %52 = trunc i32 %51 to i8
  %53 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_c(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, i8 noundef signext %52)
  br label %54

54:                                               ; preds = %45
  %55 = load i32, ptr %3, align 4, !tbaa !8
  %56 = add nsw i32 %55, 1
  store i32 %56, ptr %3, align 4, !tbaa !8
  br label %40, !llvm.loop !13

57:                                               ; preds = %44, %20
  %58 = load i32, ptr %1, align 4
  ret i32 %58
}

declare noundef zeroext i1 @_ZNSt8ios_base15sync_with_stdioEb(i1 noundef zeroext) #1

; Function Attrs: mustprogress nounwind uwtable
declare noundef ptr @_ZNSt9basic_iosIcSt11char_traitsIcEE3tieEPSo(ptr noundef nonnull align 8 dereferenceable(264), ptr noundef) #2 align 2

declare noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16), ptr noundef nonnull align 4 dereferenceable(4)) #1

; Function Attrs: inlinehint mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef) #3

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #4

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #4

; Function Attrs: inlinehint mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_c(ptr noundef nonnull align 8 dereferenceable(8), i8 noundef signext) #3

attributes #0 = { mustprogress norecurse 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" }
attributes #2 = { 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 #3 = { inlinehint 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 #4 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #5 = { 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 = !{!"vtable pointer", !7, i64 0}
!7 = !{!"Simple C++ TBAA"}
!8 = !{!9, !9, i64 0}
!9 = !{!"int", !10, i64 0}
!10 = !{!"omnipotent char", !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"

%"class.std::basic_istream" = type { ptr, i64, %"class.std::basic_ios" }
%"class.std::basic_ios" = type { %"class.std::ios_base", ptr, i8, i8, ptr, ptr, ptr, ptr }
%"class.std::ios_base" = type { ptr, i64, i64, i32, i32, i32, ptr, %"struct.std::ios_base::_Words", [8 x %"struct.std::ios_base::_Words"], i32, ptr, %"class.std::locale" }
%"struct.std::ios_base::_Words" = type { ptr, i64 }
%"class.std::locale" = type { ptr }
%"class.std::basic_ostream" = type { ptr, %"class.std::basic_ios" }

@l = external dso_local global i32, align 4
@w = external dso_local global i32, align 4
@num = external dso_local local_unnamed_addr global [40 x i32], align 16
@_ZSt3cin = external global %"class.std::basic_istream", align 8
@_ZSt4cout = external global %"class.std::basic_ostream", align 8
@.str = external hidden unnamed_addr constant [11 x i8], align 1

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() local_unnamed_addr #0 {
  %1 = tail call noundef zeroext i1 @_ZNSt8ios_base15sync_with_stdioEb(i1 noundef zeroext false)
  %2 = load ptr, ptr @_ZSt3cin, align 8, !tbaa !5
  %3 = getelementptr i8, ptr %2, i64 -24
  %4 = load i64, ptr %3, align 8
  %5 = getelementptr inbounds i8, ptr @_ZSt3cin, i64 %4
  %6 = tail call noundef ptr @_ZNSt9basic_iosIcSt11char_traitsIcEE3tieEPSo(ptr noundef nonnull align 8 dereferenceable(264) %5, ptr noundef null)
  %7 = tail call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 4 dereferenceable(4) @l)
  %8 = tail call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) %7, ptr noundef nonnull align 4 dereferenceable(4) @w)
  %9 = load i32, ptr @w, align 4, !tbaa !8
  %10 = load i32, ptr @l, align 4, !tbaa !8
  %11 = icmp slt i32 %9, %10
  %12 = mul nsw i32 %10, 26
  %13 = icmp sgt i32 %9, %12
  %or.cond = select i1 %11, i1 true, i1 %13
  br i1 %or.cond, label %16, label %.preheader12

.preheader12:                                     ; preds = %0
  %14 = icmp sgt i32 %9, 0
  br i1 %14, label %.lr.ph.preheader, label %.preheader

.lr.ph.preheader:                                 ; preds = %.preheader12
  %xtraiter = and i32 %9, 1
  %15 = icmp eq i32 %9, 1
  br i1 %15, label %.preheader.loopexit.unr-lcssa, label %.lr.ph.preheader.new

.lr.ph.preheader.new:                             ; preds = %.lr.ph.preheader
  %unroll_iter = and i32 %9, 2147483646
  br label %.lr.ph

16:                                               ; preds = %0
  %17 = tail call noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, ptr noundef nonnull @.str)
  br label %.loopexit

.preheader.loopexit.unr-lcssa:                    ; preds = %.lr.ph, %.lr.ph.preheader
  %.0713.unr = phi i32 [ 0, %.lr.ph.preheader ], [ %35, %.lr.ph ]
  %lcmp.mod.not = icmp eq i32 %xtraiter, 0
  br i1 %lcmp.mod.not, label %.preheader, label %.lr.ph.epil

.lr.ph.epil:                                      ; preds = %.preheader.loopexit.unr-lcssa
  %18 = srem i32 %.0713.unr, %10
  %19 = zext nneg i32 %18 to i64
  %20 = getelementptr inbounds [40 x i32], ptr @num, i64 0, i64 %19
  %21 = load i32, ptr %20, align 4, !tbaa !8
  %22 = add nsw i32 %21, 1
  store i32 %22, ptr %20, align 4, !tbaa !8
  br label %.preheader

.preheader:                                       ; preds = %.lr.ph.epil, %.preheader.loopexit.unr-lcssa, %.preheader12
  %23 = icmp sgt i32 %10, 0
  br i1 %23, label %.lr.ph15, label %.loopexit

.lr.ph:                                           ; preds = %.lr.ph, %.lr.ph.preheader.new
  %.0713 = phi i32 [ 0, %.lr.ph.preheader.new ], [ %35, %.lr.ph ]
  %niter = phi i32 [ 0, %.lr.ph.preheader.new ], [ %niter.next.1, %.lr.ph ]
  %24 = srem i32 %.0713, %10
  %25 = zext nneg i32 %24 to i64
  %26 = getelementptr inbounds [40 x i32], ptr @num, i64 0, i64 %25
  %27 = load i32, ptr %26, align 4, !tbaa !8
  %28 = add nsw i32 %27, 1
  store i32 %28, ptr %26, align 4, !tbaa !8
  %29 = or disjoint i32 %.0713, 1
  %30 = srem i32 %29, %10
  %31 = zext nneg i32 %30 to i64
  %32 = getelementptr inbounds [40 x i32], ptr @num, i64 0, i64 %31
  %33 = load i32, ptr %32, align 4, !tbaa !8
  %34 = add nsw i32 %33, 1
  store i32 %34, ptr %32, align 4, !tbaa !8
  %35 = add nuw nsw i32 %.0713, 2
  %niter.next.1 = add i32 %niter, 2
  %niter.ncmp.1 = icmp eq i32 %niter.next.1, %unroll_iter
  br i1 %niter.ncmp.1, label %.preheader.loopexit.unr-lcssa, label %.lr.ph, !llvm.loop !11

.lr.ph15:                                         ; preds = %.preheader, %.lr.ph15
  %indvars.iv = phi i64 [ %indvars.iv.next, %.lr.ph15 ], [ 0, %.preheader ]
  %36 = getelementptr inbounds [40 x i32], ptr @num, i64 0, i64 %indvars.iv
  %37 = load i32, ptr %36, align 4, !tbaa !8
  %38 = trunc i32 %37 to i8
  %39 = add i8 %38, 96
  %40 = tail call noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_c(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, i8 noundef signext %39)
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %41 = load i32, ptr @l, align 4, !tbaa !8
  %42 = sext i32 %41 to i64
  %43 = icmp slt i64 %indvars.iv.next, %42
  br i1 %43, label %.lr.ph15, label %.loopexit, !llvm.loop !13

.loopexit:                                        ; preds = %.lr.ph15, %.preheader, %16
  ret i32 0
}

declare noundef zeroext i1 @_ZNSt8ios_base15sync_with_stdioEb(i1 noundef zeroext) local_unnamed_addr #1

; Function Attrs: mustprogress nounwind uwtable
declare noundef ptr @_ZNSt9basic_iosIcSt11char_traitsIcEE3tieEPSo(ptr noundef nonnull align 8 dereferenceable(264), ptr noundef) local_unnamed_addr #2 align 2

declare noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16), ptr noundef nonnull align 4 dereferenceable(4)) local_unnamed_addr #1

; Function Attrs: inlinehint mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef) local_unnamed_addr #3

; Function Attrs: inlinehint mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_c(ptr noundef nonnull align 8 dereferenceable(8), i8 noundef signext) local_unnamed_addr #3

attributes #0 = { mustprogress norecurse 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" }
attributes #2 = { 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 #3 = { inlinehint 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 = !{!"vtable pointer", !7, i64 0}
!7 = !{!"Simple C++ TBAA"}
!8 = !{!9, !9, i64 0}
!9 = !{!"int", !10, i64 0}
!10 = !{!"omnipotent char", !7, i64 0}
!11 = distinct !{!11, !12}
!12 = !{!"llvm.loop.mustprogress"}
!13 = distinct !{!13, !12}


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