; LLVM IR from tangjz/acm-icpc :: codeforces/gym/104022I.ll (Z7get_fibii)

; 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::vector" = type { %"struct.std::_Vector_base" }
%"struct.std::_Vector_base" = type { %"struct.std::_Vector_base<long long, std::allocator<long long>>::_Vector_impl" }
%"struct.std::_Vector_base<long long, std::allocator<long long>>::_Vector_impl" = type { %"struct.std::_Vector_base<long long, std::allocator<long long>>::_Vector_impl_data" }
%"struct.std::_Vector_base<long long, std::allocator<long long>>::_Vector_impl_data" = type { ptr, ptr, ptr }
%"struct.std::pair" = type { i32, i32 }
%class.anon = type { ptr }

@fib = external dso_local global %"class.std::vector", align 8

; 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
declare dso_local noundef i64 @_ZNKSt6vectorIxSaIxEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24)) #1 align 2

; 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

; Function Attrs: mustprogress uwtable
define dso_local i64 @_Z7get_fibii(i32 noundef %0, i32 noundef %1) #2 {
  %3 = alloca %"struct.std::pair", align 4
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  %6 = alloca i32, align 4
  %7 = alloca i32, align 4
  %8 = alloca i32, align 4
  %9 = alloca i32, align 4
  %10 = alloca %class.anon, align 8
  %11 = alloca i32, align 4
  %12 = alloca i32, align 4
  %13 = alloca %"struct.std::pair", align 4
  %14 = alloca i32, align 4
  %15 = alloca i32, align 4
  %16 = alloca %"struct.std::pair", align 4
  %17 = alloca %"struct.std::pair", align 4
  %18 = alloca %"struct.std::pair", align 4
  %19 = alloca %"struct.std::pair", align 4
  %20 = alloca %"struct.std::pair", align 4
  %21 = alloca %"struct.std::pair", align 4
  store i32 %0, ptr %4, align 4, !tbaa !5
  store i32 %1, ptr %5, align 4, !tbaa !5
  %22 = load i32, ptr %5, align 4, !tbaa !5
  %23 = icmp eq i32 %22, 1
  br i1 %23, label %24, label %25

24:                                               ; preds = %2
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #5
  store i32 0, ptr %6, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #5
  store i32 0, ptr %7, align 4, !tbaa !5
  call void @_ZNSt4pairIiiEC2IiiTnNSt9enable_ifIXaaclsr5_PCCPE22_MoveConstructiblePairIT_T0_EEclsr5_PCCPE30_ImplicitlyMoveConvertiblePairIS3_S4_EEEbE4typeELb1EEEOS3_OS4_(ptr noundef nonnull align 4 dereferenceable(8) %3, ptr noundef nonnull align 4 dereferenceable(4) %6, ptr noundef nonnull align 4 dereferenceable(4) %7)
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #5
  br label %77

25:                                               ; preds = %2
  %26 = load i32, ptr %4, align 4, !tbaa !5
  %27 = call noundef i64 @_ZNKSt6vectorIxSaIxEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) @fib) #5
  %28 = trunc i64 %27 to i32
  %29 = icmp slt i32 %26, %28
  br i1 %29, label %30, label %54

30:                                               ; preds = %25
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #5
  %31 = load i32, ptr %4, align 4, !tbaa !5
  %32 = icmp ne i32 %31, 0
  br i1 %32, label %33, label %42

33:                                               ; preds = %30
  %34 = load i32, ptr %4, align 4, !tbaa !5
  %35 = sub nsw i32 %34, 1
  %36 = sext i32 %35 to i64
  %37 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSt6vectorIxSaIxEEixEm(ptr noundef nonnull align 8 dereferenceable(24) @fib, i64 noundef %36) #5
  %38 = load i64, ptr %37, align 8, !tbaa !9
  %39 = load i32, ptr %5, align 4, !tbaa !5
  %40 = sext i32 %39 to i64
  %41 = srem i64 %38, %40
  br label %43

42:                                               ; preds = %30
  br label %43

43:                                               ; preds = %42, %33
  %44 = phi i64 [ %41, %33 ], [ 1, %42 ]
  %45 = trunc i64 %44 to i32
  store i32 %45, ptr %8, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %9) #5
  %46 = load i32, ptr %4, align 4, !tbaa !5
  %47 = sext i32 %46 to i64
  %48 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSt6vectorIxSaIxEEixEm(ptr noundef nonnull align 8 dereferenceable(24) @fib, i64 noundef %47) #5
  %49 = load i64, ptr %48, align 8, !tbaa !9
  %50 = load i32, ptr %5, align 4, !tbaa !5
  %51 = sext i32 %50 to i64
  %52 = srem i64 %49, %51
  %53 = trunc i64 %52 to i32
  store i32 %53, ptr %9, align 4, !tbaa !5
  call void @_ZNSt4pairIiiEC2IiiTnNSt9enable_ifIXaaclsr5_PCCPE22_MoveConstructiblePairIT_T0_EEclsr5_PCCPE30_ImplicitlyMoveConvertiblePairIS3_S4_EEEbE4typeELb1EEEOS3_OS4_(ptr noundef nonnull align 4 dereferenceable(8) %3, ptr noundef nonnull align 4 dereferenceable(4) %8, ptr noundef nonnull align 4 dereferenceable(4) %9)
  call void @llvm.lifetime.end.p0(i64 4, ptr %9) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #5
  br label %77

54:                                               ; preds = %25
  call void @llvm.lifetime.start.p0(i64 8, ptr %10) #5
  %55 = getelementptr inbounds %class.anon, ptr %10, i32 0, i32 0
  store ptr %5, ptr %55, align 8, !tbaa !11
  call void @llvm.lifetime.start.p0(i64 4, ptr %11) #5
  store i32 1, ptr %11, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %12) #5
  store i32 0, ptr %12, align 4, !tbaa !5
  call void @_ZNSt4pairIiiEC2IiiTnNSt9enable_ifIXaaclsr5_PCCPE22_MoveConstructiblePairIT_T0_EEclsr5_PCCPE30_ImplicitlyMoveConvertiblePairIS3_S4_EEEbE4typeELb1EEEOS3_OS4_(ptr noundef nonnull align 4 dereferenceable(8) %3, ptr noundef nonnull align 4 dereferenceable(4) %11, ptr noundef nonnull align 4 dereferenceable(4) %12)
  call void @llvm.lifetime.end.p0(i64 4, ptr %12) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr %11) #5
  call void @llvm.lifetime.start.p0(i64 8, ptr %13) #5
  call void @llvm.lifetime.start.p0(i64 4, ptr %14) #5
  store i32 0, ptr %14, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %15) #5
  store i32 1, ptr %15, align 4, !tbaa !5
  call void @_ZNSt4pairIiiEC2IiiTnNSt9enable_ifIXaaclsr5_PCCPE22_MoveConstructiblePairIT_T0_EEclsr5_PCCPE30_ImplicitlyMoveConvertiblePairIS3_S4_EEEbE4typeELb1EEEOS3_OS4_(ptr noundef nonnull align 4 dereferenceable(8) %13, ptr noundef nonnull align 4 dereferenceable(4) %14, ptr noundef nonnull align 4 dereferenceable(4) %15)
  call void @llvm.lifetime.end.p0(i64 4, ptr %15) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr %14) #5
  br label %56

56:                                               ; preds = %69, %54
  %57 = load i32, ptr %4, align 4, !tbaa !5
  %58 = icmp sgt i32 %57, 0
  br i1 %58, label %59, label %76

59:                                               ; preds = %56
  %60 = load i32, ptr %4, align 4, !tbaa !5
  %61 = and i32 %60, 1
  %62 = icmp ne i32 %61, 0
  br i1 %62, label %63, label %68

63:                                               ; preds = %59
  call void @llvm.lifetime.start.p0(i64 8, ptr %16) #5
  call void @llvm.memcpy.p0.p0.i64(ptr align 4 %17, ptr align 4 %3, i64 8, i1 false)
  call void @llvm.memcpy.p0.p0.i64(ptr align 4 %18, ptr align 4 %13, i64 8, i1 false)
  %64 = load i64, ptr %17, align 4
  %65 = load i64, ptr %18, align 4
  %66 = call i64 @"_ZZ7get_fibiiENK3$_0clESt4pairIiiES1_"(ptr noundef nonnull align 8 dereferenceable(8) %10, i64 %64, i64 %65)
  store i64 %66, ptr %16, align 4
  %67 = call noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt4pairIiiEaSEOS0_(ptr noundef nonnull align 4 dereferenceable(8) %3, ptr noundef nonnull align 4 dereferenceable(8) %16) #5
  call void @llvm.lifetime.end.p0(i64 8, ptr %16) #5
  br label %68

68:                                               ; preds = %63, %59
  br label %69

69:                                               ; preds = %68
  %70 = load i32, ptr %4, align 4, !tbaa !5
  %71 = ashr i32 %70, 1
  store i32 %71, ptr %4, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %19) #5
  call void @llvm.memcpy.p0.p0.i64(ptr align 4 %20, ptr align 4 %13, i64 8, i1 false)
  call void @llvm.memcpy.p0.p0.i64(ptr align 4 %21, ptr align 4 %13, i64 8, i1 false)
  %72 = load i64, ptr %20, align 4
  %73 = load i64, ptr %21, align 4
  %74 = call i64 @"_ZZ7get_fibiiENK3$_0clESt4pairIiiES1_"(ptr noundef nonnull align 8 dereferenceable(8) %10, i64 %72, i64 %73)
  store i64 %74, ptr %19, align 4
  %75 = call noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt4pairIiiEaSEOS0_(ptr noundef nonnull align 4 dereferenceable(8) %13, ptr noundef nonnull align 4 dereferenceable(8) %19) #5
  call void @llvm.lifetime.end.p0(i64 8, ptr %19) #5
  br label %56, !llvm.loop !13

76:                                               ; preds = %56
  call void @llvm.lifetime.end.p0(i64 8, ptr %13) #5
  call void @llvm.lifetime.end.p0(i64 8, ptr %10) #5
  br label %77

77:                                               ; preds = %76, %43, %24
  %78 = load i64, ptr %3, align 4
  ret i64 %78
}

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt4pairIiiEC2IiiTnNSt9enable_ifIXaaclsr5_PCCPE22_MoveConstructiblePairIT_T0_EEclsr5_PCCPE30_ImplicitlyMoveConvertiblePairIS3_S4_EEEbE4typeELb1EEEOS3_OS4_(ptr noundef nonnull align 4 dereferenceable(8), ptr noundef nonnull align 4 dereferenceable(4), ptr noundef nonnull align 4 dereferenceable(4)) unnamed_addr #1 align 2

; Function Attrs: inlinehint mustprogress uwtable
declare hidden i64 @"_ZZ7get_fibiiENK3$_0clESt4pairIiiES1_"(ptr noundef nonnull align 8 dereferenceable(8), i64, i64) #3 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) #4

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt4pairIiiEaSEOS0_(ptr noundef nonnull align 4 dereferenceable(8), ptr noundef nonnull align 4 dereferenceable(8)) #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 = { 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 #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 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 = !{!"int", !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 = !{!12, !12, i64 0}
!12 = !{!"any pointer", !7, i64 0}
!13 = distinct !{!13, !14}
!14 = !{!"llvm.loop.mustprogress"}


; 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::vector" = type { %"struct.std::_Vector_base" }
%"struct.std::_Vector_base" = type { %"struct.std::_Vector_base<long long, std::allocator<long long>>::_Vector_impl" }
%"struct.std::_Vector_base<long long, std::allocator<long long>>::_Vector_impl" = type { %"struct.std::_Vector_base<long long, std::allocator<long long>>::_Vector_impl_data" }
%"struct.std::_Vector_base<long long, std::allocator<long long>>::_Vector_impl_data" = type { ptr, ptr, ptr }
%"struct.std::pair" = type { i32, i32 }
%class.anon = type { ptr }

@fib = external dso_local global %"class.std::vector", align 8

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i64 @_ZNKSt6vectorIxSaIxEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24)) local_unnamed_addr #1 align 2

; 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 #1 align 2

; Function Attrs: mustprogress uwtable
define dso_local i64 @_Z7get_fibii(i32 noundef %0, i32 noundef %1) local_unnamed_addr #2 {
  %3 = alloca %"struct.std::pair", align 8
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  %6 = alloca i32, align 4
  %7 = alloca i32, align 4
  %8 = alloca i32, align 4
  %9 = alloca %class.anon, align 8
  %10 = alloca i32, align 4
  %11 = alloca i32, align 4
  %12 = alloca %"struct.std::pair", align 8
  %13 = alloca i32, align 4
  %14 = alloca i32, align 4
  %15 = alloca %"struct.std::pair", align 8
  %16 = alloca %"struct.std::pair", align 8
  store i32 %1, ptr %4, align 4, !tbaa !5
  %17 = icmp eq i32 %1, 1
  br i1 %17, label %18, label %19

18:                                               ; preds = %2
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %5) #4
  store i32 0, ptr %5, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %6) #4
  store i32 0, ptr %6, align 4, !tbaa !5
  call void @_ZNSt4pairIiiEC2IiiTnNSt9enable_ifIXaaclsr5_PCCPE22_MoveConstructiblePairIT_T0_EEclsr5_PCCPE30_ImplicitlyMoveConvertiblePairIS3_S4_EEEbE4typeELb1EEEOS3_OS4_(ptr noundef nonnull align 4 dereferenceable(8) %3, ptr noundef nonnull align 4 dereferenceable(4) %5, ptr noundef nonnull align 4 dereferenceable(4) %6)
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %6) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %5) #4
  br label %49

19:                                               ; preds = %2
  %20 = tail call noundef i64 @_ZNKSt6vectorIxSaIxEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) @fib) #4
  %21 = trunc i64 %20 to i32
  %22 = icmp sgt i32 %21, %0
  br i1 %22, label %23, label %39

23:                                               ; preds = %19
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %7) #4
  %.not11 = icmp eq i32 %0, 0
  br i1 %.not11, label %._crit_edge14, label %24

._crit_edge14:                                    ; preds = %23
  %.pre = sext i32 %1 to i64
  br label %32

24:                                               ; preds = %23
  %25 = add nsw i32 %0, -1
  %26 = sext i32 %25 to i64
  %27 = tail call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSt6vectorIxSaIxEEixEm(ptr noundef nonnull align 8 dereferenceable(24) @fib, i64 noundef %26) #4
  %28 = load i64, ptr %27, align 8, !tbaa !9
  %29 = sext i32 %1 to i64
  %30 = srem i64 %28, %29
  %31 = trunc nsw i64 %30 to i32
  br label %32

32:                                               ; preds = %._crit_edge14, %24
  %.pre-phi = phi i64 [ %.pre, %._crit_edge14 ], [ %29, %24 ]
  %33 = phi i32 [ 1, %._crit_edge14 ], [ %31, %24 ]
  store i32 %33, ptr %7, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %8) #4
  %34 = sext i32 %0 to i64
  %35 = tail call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSt6vectorIxSaIxEEixEm(ptr noundef nonnull align 8 dereferenceable(24) @fib, i64 noundef %34) #4
  %36 = load i64, ptr %35, align 8, !tbaa !9
  %37 = srem i64 %36, %.pre-phi
  %38 = trunc nsw i64 %37 to i32
  store i32 %38, ptr %8, align 4, !tbaa !5
  call void @_ZNSt4pairIiiEC2IiiTnNSt9enable_ifIXaaclsr5_PCCPE22_MoveConstructiblePairIT_T0_EEclsr5_PCCPE30_ImplicitlyMoveConvertiblePairIS3_S4_EEEbE4typeELb1EEEOS3_OS4_(ptr noundef nonnull align 4 dereferenceable(8) %3, ptr noundef nonnull align 4 dereferenceable(4) %7, ptr noundef nonnull align 4 dereferenceable(4) %8)
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %8) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %7) #4
  br label %49

39:                                               ; preds = %19
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %9) #4
  store ptr %4, ptr %9, align 8, !tbaa !11
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %10) #4
  store i32 1, ptr %10, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %11) #4
  store i32 0, ptr %11, align 4, !tbaa !5
  call void @_ZNSt4pairIiiEC2IiiTnNSt9enable_ifIXaaclsr5_PCCPE22_MoveConstructiblePairIT_T0_EEclsr5_PCCPE30_ImplicitlyMoveConvertiblePairIS3_S4_EEEbE4typeELb1EEEOS3_OS4_(ptr noundef nonnull align 4 dereferenceable(8) %3, ptr noundef nonnull align 4 dereferenceable(4) %10, ptr noundef nonnull align 4 dereferenceable(4) %11)
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %11) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %10) #4
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %12) #4
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %13) #4
  store i32 0, ptr %13, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %14) #4
  store i32 1, ptr %14, align 4, !tbaa !5
  call void @_ZNSt4pairIiiEC2IiiTnNSt9enable_ifIXaaclsr5_PCCPE22_MoveConstructiblePairIT_T0_EEclsr5_PCCPE30_ImplicitlyMoveConvertiblePairIS3_S4_EEEbE4typeELb1EEEOS3_OS4_(ptr noundef nonnull align 4 dereferenceable(8) %12, ptr noundef nonnull align 4 dereferenceable(4) %13, ptr noundef nonnull align 4 dereferenceable(4) %14)
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %14) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %13) #4
  %40 = icmp sgt i32 %0, 0
  br i1 %40, label %.lr.ph, label %._crit_edge

.lr.ph:                                           ; preds = %39, %45
  %.012 = phi i32 [ %46, %45 ], [ %0, %39 ]
  %41 = and i32 %.012, 1
  %.not = icmp eq i32 %41, 0
  br i1 %.not, label %45, label %42

42:                                               ; preds = %.lr.ph
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %15) #4
  %.sroa.03.0.copyload = load i64, ptr %3, align 8
  %.sroa.02.0.copyload = load i64, ptr %12, align 8
  %43 = call i64 @"_ZZ7get_fibiiENK3$_0clESt4pairIiiES1_"(ptr noundef nonnull align 8 dereferenceable(8) %9, i64 %.sroa.03.0.copyload, i64 %.sroa.02.0.copyload)
  store i64 %43, ptr %15, align 8
  %44 = call noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt4pairIiiEaSEOS0_(ptr noundef nonnull align 4 dereferenceable(8) %3, ptr noundef nonnull align 4 dereferenceable(8) %15) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %15) #4
  br label %45

45:                                               ; preds = %.lr.ph, %42
  %46 = lshr i32 %.012, 1
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %16) #4
  %.sroa.01.0.copyload = load i64, ptr %12, align 8
  %47 = call i64 @"_ZZ7get_fibiiENK3$_0clESt4pairIiiES1_"(ptr noundef nonnull align 8 dereferenceable(8) %9, i64 %.sroa.01.0.copyload, i64 %.sroa.01.0.copyload)
  store i64 %47, ptr %16, align 8
  %48 = call noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt4pairIiiEaSEOS0_(ptr noundef nonnull align 4 dereferenceable(8) %12, ptr noundef nonnull align 4 dereferenceable(8) %16) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %16) #4
  %.not13 = icmp ult i32 %.012, 2
  br i1 %.not13, label %._crit_edge, label %.lr.ph, !llvm.loop !13

._crit_edge:                                      ; preds = %45, %39
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %12) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %9) #4
  br label %49

49:                                               ; preds = %._crit_edge, %32, %18
  %50 = load i64, ptr %3, align 8
  ret i64 %50
}

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt4pairIiiEC2IiiTnNSt9enable_ifIXaaclsr5_PCCPE22_MoveConstructiblePairIT_T0_EEclsr5_PCCPE30_ImplicitlyMoveConvertiblePairIS3_S4_EEEbE4typeELb1EEEOS3_OS4_(ptr noundef nonnull align 4 dereferenceable(8), ptr noundef nonnull align 4 dereferenceable(4), ptr noundef nonnull align 4 dereferenceable(4)) unnamed_addr #1 align 2

; Function Attrs: inlinehint mustprogress uwtable
declare hidden i64 @"_ZZ7get_fibiiENK3$_0clESt4pairIiiES1_"(ptr noundef nonnull align 8 dereferenceable(8), i64, i64) local_unnamed_addr #3 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt4pairIiiEaSEOS0_(ptr noundef nonnull align 4 dereferenceable(8), ptr noundef nonnull align 4 dereferenceable(8)) local_unnamed_addr #1 align 2

attributes #0 = { mustprogress 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 = { 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 #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 = { 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 = !{!"long long", !7, i64 0}
!11 = !{!12, !12, i64 0}
!12 = !{!"any pointer", !7, i64 0}
!13 = distinct !{!13, !14}
!14 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: EarlyCSEPass,GVNPass,GlobalOptPass,IPSCCPPass,InferAlignmentPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,SROAPass,SimplifyCFGPass,TailCallElimPass