; LLVM IR from Mohammed-Shoaib/Coding-Problems :: Gulf Programming Contest/2015/dance (dance)

; 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"

%"struct.std::pair" = type { i32, i32 }

; Function Attrs: mustprogress uwtable
declare dso_local noundef zeroext i1 @_Z8in_rangeSt4pairIiiES0_i(i64, i64, i32 noundef) #0

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: mustprogress uwtable
define dso_local noundef double @_Z5danceiRSt6vectorIiSaIiEES2_RS_ISt4pairIiiESaIS4_EES7_(i32 noundef %0, ptr noundef nonnull align 8 dereferenceable(24) %1, ptr noundef nonnull align 8 dereferenceable(24) %2, ptr noundef nonnull align 8 dereferenceable(24) %3, ptr noundef nonnull align 8 dereferenceable(24) %4) #0 {
  %6 = alloca i32, align 4
  %7 = alloca ptr, align 8
  %8 = alloca ptr, align 8
  %9 = alloca ptr, align 8
  %10 = alloca ptr, align 8
  %11 = alloca double, align 8
  %12 = alloca i32, align 4
  %13 = alloca i32, align 4
  %14 = alloca i32, align 4
  %15 = alloca %"struct.std::pair", align 4
  %16 = alloca %"struct.std::pair", align 4
  store i32 %0, ptr %6, align 4, !tbaa !5
  store ptr %1, ptr %7, align 8, !tbaa !9
  store ptr %2, ptr %8, align 8, !tbaa !9
  store ptr %3, ptr %9, align 8, !tbaa !9
  store ptr %4, ptr %10, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %11) #4
  store double 0.000000e+00, ptr %11, align 8, !tbaa !11
  call void @llvm.lifetime.start.p0(i64 4, ptr %12) #4
  store i32 0, ptr %12, align 4, !tbaa !5
  br label %17

17:                                               ; preds = %66, %5
  %18 = load i32, ptr %12, align 4, !tbaa !5
  %19 = sext i32 %18 to i64
  %20 = load ptr, ptr %9, align 8, !tbaa !9
  %21 = call noundef i64 @_ZNKSt6vectorISt4pairIiiESaIS1_EE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) %20) #4
  %22 = icmp ult i64 %19, %21
  br i1 %22, label %24, label %23

23:                                               ; preds = %17
  store i32 2, ptr %13, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %12) #4
  br label %69

24:                                               ; preds = %17
  call void @llvm.lifetime.start.p0(i64 4, ptr %14) #4
  store i32 0, ptr %14, align 4, !tbaa !5
  br label %25

25:                                               ; preds = %61, %24
  %26 = load i32, ptr %14, align 4, !tbaa !5
  %27 = sext i32 %26 to i64
  %28 = load ptr, ptr %10, align 8, !tbaa !9
  %29 = call noundef i64 @_ZNKSt6vectorISt4pairIiiESaIS1_EE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) %28) #4
  %30 = icmp ult i64 %27, %29
  br i1 %30, label %32, label %31

31:                                               ; preds = %25
  store i32 5, ptr %13, align 4
  br label %64

32:                                               ; preds = %25
  %33 = load ptr, ptr %9, align 8, !tbaa !9
  %34 = load i32, ptr %12, align 4, !tbaa !5
  %35 = sext i32 %34 to i64
  %36 = call noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt6vectorISt4pairIiiESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %33, i64 noundef %35) #4
  call void @llvm.memcpy.p0.p0.i64(ptr align 4 %15, ptr align 4 %36, i64 8, i1 false)
  %37 = load ptr, ptr %10, align 8, !tbaa !9
  %38 = load i32, ptr %14, align 4, !tbaa !5
  %39 = sext i32 %38 to i64
  %40 = call noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt6vectorISt4pairIiiESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %37, i64 noundef %39) #4
  call void @llvm.memcpy.p0.p0.i64(ptr align 4 %16, ptr align 4 %40, i64 8, i1 false)
  %41 = load ptr, ptr %8, align 8, !tbaa !9
  %42 = load i32, ptr %14, align 4, !tbaa !5
  %43 = sext i32 %42 to i64
  %44 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %41, i64 noundef %43) #4
  %45 = load i32, ptr %44, align 4, !tbaa !5
  %46 = load i64, ptr %15, align 4
  %47 = load i64, ptr %16, align 4
  %48 = call noundef zeroext i1 @_Z8in_rangeSt4pairIiiES0_i(i64 %46, i64 %47, i32 noundef %45)
  br i1 %48, label %49, label %60

49:                                               ; preds = %32
  %50 = load i32, ptr %6, align 4, !tbaa !5
  %51 = load ptr, ptr %7, align 8, !tbaa !9
  %52 = load i32, ptr %12, align 4, !tbaa !5
  %53 = sext i32 %52 to i64
  %54 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %51, i64 noundef %53) #4
  %55 = load i32, ptr %54, align 4, !tbaa !5
  %56 = mul nsw i32 %50, %55
  %57 = sitofp i32 %56 to double
  %58 = load double, ptr %11, align 8, !tbaa !11
  %59 = fadd double %58, %57
  store double %59, ptr %11, align 8, !tbaa !11
  store i32 5, ptr %13, align 4
  br label %64

60:                                               ; preds = %32
  br label %61

61:                                               ; preds = %60
  %62 = load i32, ptr %14, align 4, !tbaa !5
  %63 = add nsw i32 %62, 1
  store i32 %63, ptr %14, align 4, !tbaa !5
  br label %25, !llvm.loop !13

64:                                               ; preds = %49, %31
  call void @llvm.lifetime.end.p0(i64 4, ptr %14) #4
  br label %65

65:                                               ; preds = %64
  br label %66

66:                                               ; preds = %65
  %67 = load i32, ptr %12, align 4, !tbaa !5
  %68 = add nsw i32 %67, 1
  store i32 %68, ptr %12, align 4, !tbaa !5
  br label %17, !llvm.loop !15

69:                                               ; preds = %23
  %70 = load double, ptr %11, align 8, !tbaa !11
  store i32 1, ptr %13, align 4
  call void @llvm.lifetime.end.p0(i64 8, ptr %11) #4
  ret double %70
}

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i64 @_ZNKSt6vectorISt4pairIiiESaIS1_EE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24)) #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt6vectorISt4pairIiiESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) #2 align 2

; Function Attrs: nocallback nofree nounwind willreturn memory(argmem: readwrite)
declare void @llvm.memcpy.p0.p0.i64(ptr noalias nocapture writeonly, ptr noalias nocapture readonly, i64, i1 immarg) #3

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) #2 align 2

attributes #0 = { 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 #1 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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 = { nocallback nofree nounwind willreturn memory(argmem: readwrite) }
attributes #4 = { 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 = !{!10, !10, i64 0}
!10 = !{!"any pointer", !7, i64 0}
!11 = !{!12, !12, i64 0}
!12 = !{!"double", !7, i64 0}
!13 = distinct !{!13, !14}
!14 = !{!"llvm.loop.mustprogress"}
!15 = distinct !{!15, !14}


; 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 uwtable
declare dso_local noundef zeroext i1 @_Z8in_rangeSt4pairIiiES0_i(i64, i64, i32 noundef) local_unnamed_addr #0

; Function Attrs: mustprogress uwtable
define dso_local noundef double @_Z5danceiRSt6vectorIiSaIiEES2_RS_ISt4pairIiiESaIS4_EES7_(i32 noundef %0, ptr noundef nonnull align 8 dereferenceable(24) %1, ptr noundef nonnull align 8 dereferenceable(24) %2, ptr noundef nonnull align 8 dereferenceable(24) %3, ptr noundef nonnull align 8 dereferenceable(24) %4) local_unnamed_addr #0 {
  %6 = tail call noundef i64 @_ZNKSt6vectorISt4pairIiiESaIS1_EE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) %3) #2
  %.not = icmp eq i64 %6, 0
  br i1 %.not, label %._crit_edge, label %.preheader

.preheader:                                       ; preds = %5, %.loopexit
  %indvars.iv26 = phi i64 [ %indvars.iv.next27, %.loopexit ], [ 0, %5 ]
  %.023 = phi double [ %.1, %.loopexit ], [ 0.000000e+00, %5 ]
  %7 = tail call noundef i64 @_ZNKSt6vectorISt4pairIiiESaIS1_EE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) %4) #2
  %.not24 = icmp eq i64 %7, 0
  br i1 %.not24, label %.loopexit, label %.lr.ph

._crit_edge:                                      ; preds = %.loopexit, %5
  %.0.lcssa = phi double [ 0.000000e+00, %5 ], [ %.1, %.loopexit ]
  ret double %.0.lcssa

8:                                                ; preds = %.lr.ph
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %9 = tail call noundef i64 @_ZNKSt6vectorISt4pairIiiESaIS1_EE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) %4) #2
  %10 = icmp ugt i64 %9, %indvars.iv.next
  br i1 %10, label %.lr.ph, label %.loopexit, !llvm.loop !5

.lr.ph:                                           ; preds = %.preheader, %8
  %indvars.iv = phi i64 [ %indvars.iv.next, %8 ], [ 0, %.preheader ]
  %11 = tail call noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt6vectorISt4pairIiiESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %3, i64 noundef %indvars.iv26) #2
  %.sroa.01.0.copyload = load i64, ptr %11, align 4
  %12 = tail call noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt6vectorISt4pairIiiESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %4, i64 noundef %indvars.iv) #2
  %.sroa.0.0.copyload = load i64, ptr %12, align 4
  %13 = tail call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %2, i64 noundef %indvars.iv) #2
  %14 = load i32, ptr %13, align 4, !tbaa !7
  %15 = tail call noundef zeroext i1 @_Z8in_rangeSt4pairIiiES0_i(i64 %.sroa.01.0.copyload, i64 %.sroa.0.0.copyload, i32 noundef %14)
  br i1 %15, label %16, label %8

16:                                               ; preds = %.lr.ph
  %17 = tail call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %1, i64 noundef %indvars.iv26) #2
  %18 = load i32, ptr %17, align 4, !tbaa !7
  %19 = mul nsw i32 %18, %0
  %20 = sitofp i32 %19 to double
  %21 = fadd double %.023, %20
  br label %.loopexit

.loopexit:                                        ; preds = %8, %.preheader, %16
  %.1 = phi double [ %21, %16 ], [ %.023, %.preheader ], [ %.023, %8 ]
  %indvars.iv.next27 = add nuw nsw i64 %indvars.iv26, 1
  %22 = tail call noundef i64 @_ZNKSt6vectorISt4pairIiiESaIS1_EE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) %3) #2
  %23 = icmp ugt i64 %22, %indvars.iv.next27
  br i1 %23, label %.preheader, label %._crit_edge, !llvm.loop !11
}

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i64 @_ZNKSt6vectorISt4pairIiiESaIS1_EE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24)) local_unnamed_addr #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt6vectorISt4pairIiiESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) local_unnamed_addr #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) local_unnamed_addr #1 align 2

attributes #0 = { 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 #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 = distinct !{!5, !6}
!6 = !{!"llvm.loop.mustprogress"}
!7 = !{!8, !8, i64 0}
!8 = !{!"int", !9, i64 0}
!9 = !{!"omnipotent char", !10, i64 0}
!10 = !{!"Simple C++ TBAA"}
!11 = distinct !{!11, !6}


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