; LLVM IR from Izaron/ACM-ICPC :: Timus Online Judge/Volume 1/1020. Rope (main)

; 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 }

@_ZSt3cin = external global %"class.std::basic_istream", align 8
@.str = external hidden unnamed_addr constant [6 x i8], align 1

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef double @_Z10len_pointsdddd(double noundef, double noundef, double noundef, double noundef) #0

; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare double @llvm.fmuladd.f64(double, double, double) #1

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() #2 {
  %1 = alloca i32, align 4
  %2 = alloca double, align 8
  %3 = alloca double, align 8
  %4 = alloca [101 x [2 x double]], align 16
  %5 = alloca double, align 8
  %6 = alloca i32, align 4
  %7 = alloca i32, align 4
  %8 = alloca i32, align 4
  store i32 0, ptr %1, align 4
  call void @llvm.lifetime.start.p0(i64 8, ptr %2) #6
  store double 3.141590e+00, ptr %2, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %3) #6
  store double 0.000000e+00, ptr %3, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 1616, ptr %4) #6
  call void @llvm.lifetime.start.p0(i64 8, ptr %5) #6
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #6
  %9 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 4 dereferenceable(4) %6)
  %10 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERd(ptr noundef nonnull align 8 dereferenceable(16) %9, ptr noundef nonnull align 8 dereferenceable(8) %5)
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #6
  store i32 0, ptr %7, align 4, !tbaa !9
  br label %11

11:                                               ; preds = %27, %0
  %12 = load i32, ptr %7, align 4, !tbaa !9
  %13 = load i32, ptr %6, align 4, !tbaa !9
  %14 = icmp slt i32 %12, %13
  br i1 %14, label %16, label %15

15:                                               ; preds = %11
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #6
  br label %30

16:                                               ; preds = %11
  %17 = load i32, ptr %7, align 4, !tbaa !9
  %18 = sext i32 %17 to i64
  %19 = getelementptr inbounds [101 x [2 x double]], ptr %4, i64 0, i64 %18
  %20 = getelementptr inbounds [2 x double], ptr %19, i64 0, i64 0
  %21 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERd(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 8 dereferenceable(8) %20)
  %22 = load i32, ptr %7, align 4, !tbaa !9
  %23 = sext i32 %22 to i64
  %24 = getelementptr inbounds [101 x [2 x double]], ptr %4, i64 0, i64 %23
  %25 = getelementptr inbounds [2 x double], ptr %24, i64 0, i64 1
  %26 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERd(ptr noundef nonnull align 8 dereferenceable(16) %21, ptr noundef nonnull align 8 dereferenceable(8) %25)
  br label %27

27:                                               ; preds = %16
  %28 = load i32, ptr %7, align 4, !tbaa !9
  %29 = add nsw i32 %28, 1
  store i32 %29, ptr %7, align 4, !tbaa !9
  br label %11, !llvm.loop !11

30:                                               ; preds = %15
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #6
  store i32 0, ptr %8, align 4, !tbaa !9
  br label %31

31:                                               ; preds = %63, %30
  %32 = load i32, ptr %8, align 4, !tbaa !9
  %33 = load i32, ptr %6, align 4, !tbaa !9
  %34 = sub nsw i32 %33, 1
  %35 = icmp slt i32 %32, %34
  br i1 %35, label %37, label %36

36:                                               ; preds = %31
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #6
  br label %66

37:                                               ; preds = %31
  %38 = load i32, ptr %8, align 4, !tbaa !9
  %39 = sext i32 %38 to i64
  %40 = getelementptr inbounds [101 x [2 x double]], ptr %4, i64 0, i64 %39
  %41 = getelementptr inbounds [2 x double], ptr %40, i64 0, i64 0
  %42 = load double, ptr %41, align 16, !tbaa !5
  %43 = load i32, ptr %8, align 4, !tbaa !9
  %44 = add nsw i32 %43, 1
  %45 = sext i32 %44 to i64
  %46 = getelementptr inbounds [101 x [2 x double]], ptr %4, i64 0, i64 %45
  %47 = getelementptr inbounds [2 x double], ptr %46, i64 0, i64 0
  %48 = load double, ptr %47, align 16, !tbaa !5
  %49 = load i32, ptr %8, align 4, !tbaa !9
  %50 = sext i32 %49 to i64
  %51 = getelementptr inbounds [101 x [2 x double]], ptr %4, i64 0, i64 %50
  %52 = getelementptr inbounds [2 x double], ptr %51, i64 0, i64 1
  %53 = load double, ptr %52, align 8, !tbaa !5
  %54 = load i32, ptr %8, align 4, !tbaa !9
  %55 = add nsw i32 %54, 1
  %56 = sext i32 %55 to i64
  %57 = getelementptr inbounds [101 x [2 x double]], ptr %4, i64 0, i64 %56
  %58 = getelementptr inbounds [2 x double], ptr %57, i64 0, i64 1
  %59 = load double, ptr %58, align 8, !tbaa !5
  %60 = call noundef double @_Z10len_pointsdddd(double noundef %42, double noundef %48, double noundef %53, double noundef %59)
  %61 = load double, ptr %3, align 8, !tbaa !5
  %62 = fadd double %61, %60
  store double %62, ptr %3, align 8, !tbaa !5
  br label %63

63:                                               ; preds = %37
  %64 = load i32, ptr %8, align 4, !tbaa !9
  %65 = add nsw i32 %64, 1
  store i32 %65, ptr %8, align 4, !tbaa !9
  br label %31, !llvm.loop !13

66:                                               ; preds = %36
  %67 = getelementptr inbounds [101 x [2 x double]], ptr %4, i64 0, i64 0
  %68 = getelementptr inbounds [2 x double], ptr %67, i64 0, i64 0
  %69 = load double, ptr %68, align 16, !tbaa !5
  %70 = load i32, ptr %6, align 4, !tbaa !9
  %71 = sub nsw i32 %70, 1
  %72 = sext i32 %71 to i64
  %73 = getelementptr inbounds [101 x [2 x double]], ptr %4, i64 0, i64 %72
  %74 = getelementptr inbounds [2 x double], ptr %73, i64 0, i64 0
  %75 = load double, ptr %74, align 16, !tbaa !5
  %76 = getelementptr inbounds [101 x [2 x double]], ptr %4, i64 0, i64 0
  %77 = getelementptr inbounds [2 x double], ptr %76, i64 0, i64 1
  %78 = load double, ptr %77, align 8, !tbaa !5
  %79 = load i32, ptr %6, align 4, !tbaa !9
  %80 = sub nsw i32 %79, 1
  %81 = sext i32 %80 to i64
  %82 = getelementptr inbounds [101 x [2 x double]], ptr %4, i64 0, i64 %81
  %83 = getelementptr inbounds [2 x double], ptr %82, i64 0, i64 1
  %84 = load double, ptr %83, align 8, !tbaa !5
  %85 = call noundef double @_Z10len_pointsdddd(double noundef %69, double noundef %75, double noundef %78, double noundef %84)
  %86 = load double, ptr %5, align 8, !tbaa !5
  %87 = call double @llvm.fmuladd.f64(double 6.283180e+00, double %86, double %85)
  %88 = load double, ptr %3, align 8, !tbaa !5
  %89 = fadd double %88, %87
  store double %89, ptr %3, align 8, !tbaa !5
  %90 = load double, ptr %3, align 8, !tbaa !5
  %91 = call i32 (ptr, ...) @printf(ptr noundef @.str, double noundef %90)
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #6
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #6
  call void @llvm.lifetime.end.p0(i64 1616, ptr %4) #6
  call void @llvm.lifetime.end.p0(i64 8, ptr %3) #6
  call void @llvm.lifetime.end.p0(i64 8, ptr %2) #6
  ret i32 0
}

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #3

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

; Function Attrs: mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERd(ptr noundef nonnull align 8 dereferenceable(16), ptr noundef nonnull align 8 dereferenceable(8)) #5 align 2

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #3

declare i32 @printf(ptr noundef, ...) #4

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 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }
attributes #2 = { 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 #3 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #4 = { "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 #5 = { 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 #6 = { 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 = !{!"double", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"int", !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 }

@_ZSt3cin = external global %"class.std::basic_istream", align 8
@.str = external hidden unnamed_addr constant [6 x i8], align 1

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef double @_Z10len_pointsdddd(double noundef, double noundef, double noundef, double noundef) local_unnamed_addr #0

; Function Attrs: mustprogress nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare double @llvm.fmuladd.f64(double, double, double) #1

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() local_unnamed_addr #2 {
  %1 = alloca [101 x [2 x double]], align 16
  %2 = alloca double, align 8
  %3 = alloca i32, align 4
  call void @llvm.lifetime.start.p0(i64 1616, ptr nonnull %1) #7
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %2) #7
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %3) #7
  %4 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 4 dereferenceable(4) %3)
  %5 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERd(ptr noundef nonnull align 8 dereferenceable(16) %4, ptr noundef nonnull align 8 dereferenceable(8) %2)
  %6 = load i32, ptr %3, align 4, !tbaa !5
  %7 = icmp sgt i32 %6, 0
  br i1 %7, label %.lr.ph, label %.preheader.._crit_edge_crit_edge

.preheader:                                       ; preds = %.lr.ph
  %8 = icmp sgt i32 %15, 1
  br i1 %8, label %.lr.ph18, label %.preheader.._crit_edge_crit_edge

.preheader.._crit_edge_crit_edge:                 ; preds = %0, %.preheader
  %9 = phi i32 [ %15, %.preheader ], [ %6, %0 ]
  %10 = add nsw i32 %9, -1
  %.pre = sext i32 %10 to i64
  br label %._crit_edge

.lr.ph:                                           ; preds = %0, %.lr.ph
  %indvars.iv = phi i64 [ %indvars.iv.next, %.lr.ph ], [ 0, %0 ]
  %11 = getelementptr inbounds [101 x [2 x double]], ptr %1, i64 0, i64 %indvars.iv
  %12 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERd(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 8 dereferenceable(8) %11)
  %13 = getelementptr inbounds i8, ptr %11, i64 8
  %14 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERd(ptr noundef nonnull align 8 dereferenceable(16) %12, ptr noundef nonnull align 8 dereferenceable(8) %13)
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %15 = load i32, ptr %3, align 4, !tbaa !5
  %16 = sext i32 %15 to i64
  %17 = icmp slt i64 %indvars.iv.next, %16
  br i1 %17, label %.lr.ph, label %.preheader, !llvm.loop !9

._crit_edge:                                      ; preds = %.lr.ph18, %.preheader.._crit_edge_crit_edge
  %.pre-phi = phi i64 [ %.pre, %.preheader.._crit_edge_crit_edge ], [ %42, %.lr.ph18 ]
  %.013.lcssa = phi double [ 0.000000e+00, %.preheader.._crit_edge_crit_edge ], [ %39, %.lr.ph18 ]
  %18 = load double, ptr %1, align 16, !tbaa !11
  %19 = getelementptr inbounds [101 x [2 x double]], ptr %1, i64 0, i64 %.pre-phi
  %20 = load double, ptr %19, align 16, !tbaa !11
  %21 = getelementptr inbounds i8, ptr %1, i64 8
  %22 = load double, ptr %21, align 8, !tbaa !11
  %23 = getelementptr inbounds i8, ptr %19, i64 8
  %24 = load double, ptr %23, align 8, !tbaa !11
  %25 = call noundef double @_Z10len_pointsdddd(double noundef %18, double noundef %20, double noundef %22, double noundef %24)
  %26 = load double, ptr %2, align 8, !tbaa !11
  %27 = call double @llvm.fmuladd.f64(double %26, double 6.283180e+00, double %25)
  %28 = fadd double %.013.lcssa, %27
  %29 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str, double noundef %28)
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %3) #7
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %2) #7
  call void @llvm.lifetime.end.p0(i64 1616, ptr nonnull %1) #7
  ret i32 0

.lr.ph18:                                         ; preds = %.preheader, %.lr.ph18
  %indvars.iv23 = phi i64 [ %indvars.iv.next24, %.lr.ph18 ], [ 0, %.preheader ]
  %.01316 = phi double [ %39, %.lr.ph18 ], [ 0.000000e+00, %.preheader ]
  %30 = getelementptr inbounds [101 x [2 x double]], ptr %1, i64 0, i64 %indvars.iv23
  %31 = load double, ptr %30, align 16, !tbaa !11
  %indvars.iv.next24 = add nuw nsw i64 %indvars.iv23, 1
  %32 = getelementptr inbounds [101 x [2 x double]], ptr %1, i64 0, i64 %indvars.iv.next24
  %33 = load double, ptr %32, align 16, !tbaa !11
  %34 = getelementptr inbounds i8, ptr %30, i64 8
  %35 = load double, ptr %34, align 8, !tbaa !11
  %36 = getelementptr inbounds i8, ptr %32, i64 8
  %37 = load double, ptr %36, align 8, !tbaa !11
  %38 = call noundef double @_Z10len_pointsdddd(double noundef %31, double noundef %33, double noundef %35, double noundef %37)
  %39 = fadd double %.01316, %38
  %40 = load i32, ptr %3, align 4, !tbaa !5
  %41 = add nsw i32 %40, -1
  %42 = sext i32 %41 to i64
  %43 = icmp slt i64 %indvars.iv.next24, %42
  br i1 %43, label %.lr.ph18, label %._crit_edge, !llvm.loop !13
}

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #3

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 #4

; Function Attrs: mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERd(ptr noundef nonnull align 8 dereferenceable(16), ptr noundef nonnull align 8 dereferenceable(8)) local_unnamed_addr #5 align 2

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #3

; Function Attrs: nofree nounwind
declare noundef i32 @printf(ptr nocapture noundef readonly, ...) local_unnamed_addr #6

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 nocallback nofree nosync nounwind speculatable willreturn memory(none) }
attributes #2 = { 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 #3 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #4 = { "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 #5 = { 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 #6 = { 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" }
attributes #7 = { 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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}
!11 = !{!12, !12, i64 0}
!12 = !{!"double", !7, i64 0}
!13 = distinct !{!13, !10}


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