; LLVM IR from DionysiosB/CodeForces :: CodeforcesEDU/DisjointSetsUnion2D-Bosses.ll (Z3getRSt6vectorIlSaIlEES2_l)

; 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 { i64, i64 }
%"struct.std::pair.0" = type <{ i64, i32, [4 x i8] }>

; Function Attrs: mustprogress uwtable
define dso_local { i64, i64 } @_Z3getRSt6vectorIlSaIlEES2_l(ptr noundef nonnull align 8 dereferenceable(24) %0, ptr noundef nonnull align 8 dereferenceable(24) %1, i64 noundef %2) #0 {
  %4 = alloca %"struct.std::pair", align 8
  %5 = alloca ptr, align 8
  %6 = alloca ptr, align 8
  %7 = alloca i64, align 8
  %8 = alloca %"struct.std::pair.0", align 8
  %9 = alloca i32, align 4
  %10 = alloca { i64, i32 }, align 8
  %11 = alloca %"struct.std::pair", align 8
  %12 = alloca i64, align 8
  store ptr %0, ptr %5, align 8, !tbaa !5
  store ptr %1, ptr %6, align 8, !tbaa !5
  store i64 %2, ptr %7, align 8, !tbaa !9
  %13 = load ptr, ptr %5, align 8, !tbaa !5
  %14 = load i64, ptr %7, align 8, !tbaa !9
  %15 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSt6vectorIlSaIlEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %13, i64 noundef %14) #4
  %16 = load i64, ptr %15, align 8, !tbaa !9
  %17 = load i64, ptr %7, align 8, !tbaa !9
  %18 = icmp eq i64 %16, %17
  br i1 %18, label %19, label %21

19:                                               ; preds = %3
  call void @llvm.lifetime.start.p0(i64 16, ptr %8) #4
  call void @llvm.lifetime.start.p0(i64 4, ptr %9) #4
  store i32 0, ptr %9, align 4, !tbaa !11
  %20 = call { i64, i32 } @_ZSt9make_pairIRliESt4pairINSt25__strip_reference_wrapperINSt5decayIT_E4typeEE6__typeENS2_INS3_IT0_E4typeEE6__typeEEOS4_OS9_(ptr noundef nonnull align 8 dereferenceable(8) %7, ptr noundef nonnull align 4 dereferenceable(4) %9)
  store { i64, i32 } %20, ptr %10, align 8
  call void @llvm.memcpy.p0.p0.i64(ptr align 8 %8, ptr align 8 %10, i64 12, i1 false)
  call void @_ZNSt4pairIllEC2IliTnNSt9enable_ifIXaaclsr6_PCCFPIT_T0_EE22_MoveConstructiblePairIS3_S4_EEclsr6_PCCFPIS3_S4_EE30_ImplicitlyMoveConvertiblePairIS3_S4_EEEbE4typeELb1EEEOS_IS3_S4_E(ptr noundef nonnull align 8 dereferenceable(16) %4, ptr noundef nonnull align 8 dereferenceable(12) %8)
  call void @llvm.lifetime.end.p0(i64 4, ptr %9) #4
  call void @llvm.lifetime.end.p0(i64 16, ptr %8) #4
  br label %70

21:                                               ; preds = %3
  call void @llvm.lifetime.start.p0(i64 16, ptr %11) #4
  %22 = load ptr, ptr %5, align 8, !tbaa !5
  %23 = load ptr, ptr %6, align 8, !tbaa !5
  %24 = load ptr, ptr %5, align 8, !tbaa !5
  %25 = load i64, ptr %7, align 8, !tbaa !9
  %26 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSt6vectorIlSaIlEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %24, i64 noundef %25) #4
  %27 = load i64, ptr %26, align 8, !tbaa !9
  %28 = call { i64, i64 } @_Z3getRSt6vectorIlSaIlEES2_l(ptr noundef nonnull align 8 dereferenceable(24) %22, ptr noundef nonnull align 8 dereferenceable(24) %23, i64 noundef %27)
  %29 = getelementptr inbounds { i64, i64 }, ptr %11, i32 0, i32 0
  %30 = extractvalue { i64, i64 } %28, 0
  store i64 %30, ptr %29, align 8
  %31 = getelementptr inbounds { i64, i64 }, ptr %11, i32 0, i32 1
  %32 = extractvalue { i64, i64 } %28, 1
  store i64 %32, ptr %31, align 8
  %33 = getelementptr inbounds %"struct.std::pair", ptr %11, i32 0, i32 0
  %34 = load i64, ptr %33, align 8, !tbaa !13
  %35 = load ptr, ptr %5, align 8, !tbaa !5
  %36 = load i64, ptr %7, align 8, !tbaa !9
  %37 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSt6vectorIlSaIlEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %35, i64 noundef %36) #4
  store i64 %34, ptr %37, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %12) #4
  %38 = getelementptr inbounds %"struct.std::pair", ptr %11, i32 0, i32 1
  %39 = load i64, ptr %38, align 8, !tbaa !15
  %40 = add nsw i64 %39, 1
  store i64 %40, ptr %12, align 8, !tbaa !9
  %41 = load ptr, ptr %6, align 8, !tbaa !5
  %42 = load i64, ptr %7, align 8, !tbaa !9
  %43 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSt6vectorIlSaIlEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %41, i64 noundef %42) #4
  %44 = load i64, ptr %43, align 8, !tbaa !9
  %45 = load i64, ptr %12, align 8, !tbaa !9
  %46 = icmp sgt i64 %44, %45
  br i1 %46, label %47, label %52

47:                                               ; preds = %21
  %48 = load ptr, ptr %6, align 8, !tbaa !5
  %49 = load i64, ptr %7, align 8, !tbaa !9
  %50 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSt6vectorIlSaIlEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %48, i64 noundef %49) #4
  %51 = load i64, ptr %50, align 8, !tbaa !9
  br label %54

52:                                               ; preds = %21
  %53 = load i64, ptr %12, align 8, !tbaa !9
  br label %54

54:                                               ; preds = %52, %47
  %55 = phi i64 [ %51, %47 ], [ %53, %52 ]
  %56 = load ptr, ptr %6, align 8, !tbaa !5
  %57 = load i64, ptr %7, align 8, !tbaa !9
  %58 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSt6vectorIlSaIlEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %56, i64 noundef %57) #4
  store i64 %55, ptr %58, align 8, !tbaa !9
  %59 = load ptr, ptr %5, align 8, !tbaa !5
  %60 = load i64, ptr %7, align 8, !tbaa !9
  %61 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSt6vectorIlSaIlEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %59, i64 noundef %60) #4
  %62 = load ptr, ptr %6, align 8, !tbaa !5
  %63 = load i64, ptr %7, align 8, !tbaa !9
  %64 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSt6vectorIlSaIlEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %62, i64 noundef %63) #4
  %65 = call { i64, i64 } @_ZSt9make_pairIRlS0_ESt4pairINSt25__strip_reference_wrapperINSt5decayIT_E4typeEE6__typeENS2_INS3_IT0_E4typeEE6__typeEEOS4_OS9_(ptr noundef nonnull align 8 dereferenceable(8) %61, ptr noundef nonnull align 8 dereferenceable(8) %64)
  %66 = getelementptr inbounds { i64, i64 }, ptr %4, i32 0, i32 0
  %67 = extractvalue { i64, i64 } %65, 0
  store i64 %67, ptr %66, align 8
  %68 = getelementptr inbounds { i64, i64 }, ptr %4, i32 0, i32 1
  %69 = extractvalue { i64, i64 } %65, 1
  store i64 %69, ptr %68, align 8
  call void @llvm.lifetime.end.p0(i64 8, ptr %12) #4
  call void @llvm.lifetime.end.p0(i64 16, ptr %11) #4
  br label %70

70:                                               ; preds = %54, %19
  %71 = load { i64, i64 }, ptr %4, align 8
  ret { i64, i64 } %71
}

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(8) ptr @_ZNSt6vectorIlSaIlEEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) #1 align 2

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #2

; Function Attrs: mustprogress uwtable
declare dso_local { i64, i32 } @_ZSt9make_pairIRliESt4pairINSt25__strip_reference_wrapperINSt5decayIT_E4typeEE6__typeENS2_INS3_IT0_E4typeEE6__typeEEOS4_OS9_(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef nonnull align 4 dereferenceable(4)) #0

; 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 void @_ZNSt4pairIllEC2IliTnNSt9enable_ifIXaaclsr6_PCCFPIT_T0_EE22_MoveConstructiblePairIS3_S4_EEclsr6_PCCFPIS3_S4_EE30_ImplicitlyMoveConvertiblePairIS3_S4_EEEbE4typeELb1EEEOS_IS3_S4_E(ptr noundef nonnull align 8 dereferenceable(16), ptr noundef nonnull align 8 dereferenceable(12)) unnamed_addr #1 align 2

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #2

; Function Attrs: mustprogress uwtable
declare dso_local { i64, i64 } @_ZSt9make_pairIRlS0_ESt4pairINSt25__strip_reference_wrapperINSt5decayIT_E4typeEE6__typeENS2_INS3_IT0_E4typeEE6__typeEEOS4_OS9_(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef nonnull align 8 dereferenceable(8)) #0

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 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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 = !{!"any pointer", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"long", !7, i64 0}
!11 = !{!12, !12, i64 0}
!12 = !{!"int", !7, i64 0}
!13 = !{!14, !10, i64 0}
!14 = !{!"_ZTSSt4pairIllE", !10, i64 0, !10, i64 8}
!15 = !{!14, !10, i64 8}


; 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"

%"struct.std::pair" = type { i64, i64 }
%"struct.std::pair.0" = type <{ i64, i32, [4 x i8] }>

; Function Attrs: mustprogress uwtable
define dso_local { i64, i64 } @_Z3getRSt6vectorIlSaIlEES2_l(ptr noundef nonnull align 8 dereferenceable(24) %0, ptr noundef nonnull align 8 dereferenceable(24) %1, i64 noundef %2) local_unnamed_addr #0 {
  %4 = alloca %"struct.std::pair", align 8
  %5 = alloca i64, align 8
  %6 = alloca %"struct.std::pair.0", align 8
  %7 = alloca i32, align 4
  store i64 %2, ptr %5, align 8, !tbaa !5
  %8 = tail call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSt6vectorIlSaIlEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %0, i64 noundef %2) #3
  %9 = load i64, ptr %8, align 8, !tbaa !5
  %10 = icmp eq i64 %9, %2
  br i1 %10, label %11, label %13

11:                                               ; preds = %3
  call void @llvm.lifetime.start.p0(i64 16, ptr nonnull %6) #3
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %7) #3
  store i32 0, ptr %7, align 4, !tbaa !9
  %12 = call { i64, i32 } @_ZSt9make_pairIRliESt4pairINSt25__strip_reference_wrapperINSt5decayIT_E4typeEE6__typeENS2_INS3_IT0_E4typeEE6__typeEEOS4_OS9_(ptr noundef nonnull align 8 dereferenceable(8) %5, ptr noundef nonnull align 4 dereferenceable(4) %7)
  %.fca.0.extract = extractvalue { i64, i32 } %12, 0
  %.fca.1.extract = extractvalue { i64, i32 } %12, 1
  store i64 %.fca.0.extract, ptr %6, align 8
  %.sroa.2.0..sroa_idx = getelementptr inbounds i8, ptr %6, i64 8
  store i32 %.fca.1.extract, ptr %.sroa.2.0..sroa_idx, align 8
  call void @_ZNSt4pairIllEC2IliTnNSt9enable_ifIXaaclsr6_PCCFPIT_T0_EE22_MoveConstructiblePairIS3_S4_EEclsr6_PCCFPIS3_S4_EE30_ImplicitlyMoveConvertiblePairIS3_S4_EEEbE4typeELb1EEEOS_IS3_S4_E(ptr noundef nonnull align 8 dereferenceable(16) %4, ptr noundef nonnull align 8 dereferenceable(12) %6)
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %7) #3
  call void @llvm.lifetime.end.p0(i64 16, ptr nonnull %6) #3
  %.fca.0.load.pre = load i64, ptr %4, align 8
  %.fca.1.gep.phi.trans.insert = getelementptr inbounds i8, ptr %4, i64 8
  %.fca.1.load.pre = load i64, ptr %.fca.1.gep.phi.trans.insert, align 8
  br label %35

13:                                               ; preds = %3
  %14 = tail call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSt6vectorIlSaIlEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %0, i64 noundef %2) #3
  %15 = load i64, ptr %14, align 8, !tbaa !5
  %16 = tail call { i64, i64 } @_Z3getRSt6vectorIlSaIlEES2_l(ptr noundef nonnull align 8 dereferenceable(24) %0, ptr noundef nonnull align 8 dereferenceable(24) %1, i64 noundef %15)
  %17 = extractvalue { i64, i64 } %16, 0
  %18 = extractvalue { i64, i64 } %16, 1
  %19 = tail call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSt6vectorIlSaIlEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %0, i64 noundef %2) #3
  store i64 %17, ptr %19, align 8, !tbaa !5
  %20 = add nsw i64 %18, 1
  %21 = tail call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSt6vectorIlSaIlEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %1, i64 noundef %2) #3
  %22 = load i64, ptr %21, align 8, !tbaa !5
  %23 = icmp sgt i64 %22, %20
  br i1 %23, label %24, label %27

24:                                               ; preds = %13
  %25 = tail call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSt6vectorIlSaIlEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %1, i64 noundef %2) #3
  %26 = load i64, ptr %25, align 8, !tbaa !5
  br label %27

27:                                               ; preds = %13, %24
  %28 = phi i64 [ %26, %24 ], [ %20, %13 ]
  %29 = tail call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSt6vectorIlSaIlEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %1, i64 noundef %2) #3
  store i64 %28, ptr %29, align 8, !tbaa !5
  %30 = tail call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSt6vectorIlSaIlEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %0, i64 noundef %2) #3
  %31 = tail call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSt6vectorIlSaIlEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %1, i64 noundef %2) #3
  %32 = tail call { i64, i64 } @_ZSt9make_pairIRlS0_ESt4pairINSt25__strip_reference_wrapperINSt5decayIT_E4typeEE6__typeENS2_INS3_IT0_E4typeEE6__typeEEOS4_OS9_(ptr noundef nonnull align 8 dereferenceable(8) %30, ptr noundef nonnull align 8 dereferenceable(8) %31)
  %33 = extractvalue { i64, i64 } %32, 0
  %34 = extractvalue { i64, i64 } %32, 1
  br label %35

35:                                               ; preds = %27, %11
  %.fca.1.load = phi i64 [ %34, %27 ], [ %.fca.1.load.pre, %11 ]
  %.fca.0.load = phi i64 [ %33, %27 ], [ %.fca.0.load.pre, %11 ]
  %.fca.0.insert = insertvalue { i64, i64 } poison, i64 %.fca.0.load, 0
  %.fca.1.insert = insertvalue { i64, i64 } %.fca.0.insert, i64 %.fca.1.load, 1
  ret { i64, i64 } %.fca.1.insert
}

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(8) ptr @_ZNSt6vectorIlSaIlEEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) local_unnamed_addr #1 align 2

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #2

; Function Attrs: mustprogress uwtable
declare dso_local { i64, i32 } @_ZSt9make_pairIRliESt4pairINSt25__strip_reference_wrapperINSt5decayIT_E4typeEE6__typeENS2_INS3_IT0_E4typeEE6__typeEEOS4_OS9_(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef nonnull align 4 dereferenceable(4)) local_unnamed_addr #0

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt4pairIllEC2IliTnNSt9enable_ifIXaaclsr6_PCCFPIT_T0_EE22_MoveConstructiblePairIS3_S4_EEclsr6_PCCFPIS3_S4_EE30_ImplicitlyMoveConvertiblePairIS3_S4_EEEbE4typeELb1EEEOS_IS3_S4_E(ptr noundef nonnull align 8 dereferenceable(16), ptr noundef nonnull align 8 dereferenceable(12)) unnamed_addr #1 align 2

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #2

; Function Attrs: mustprogress uwtable
declare dso_local { i64, i64 } @_ZSt9make_pairIRlS0_ESt4pairINSt25__strip_reference_wrapperINSt5decayIT_E4typeEE6__typeENS2_INS3_IT0_E4typeEE6__typeEEOS4_OS9_(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef nonnull align 8 dereferenceable(8)) local_unnamed_addr #0

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


; Effective O3 passes: BDCEPass,DSEPass,EarlyCSEPass,GVNPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,SROAPass,SimplifyCFGPass,TailCallElimPass