; LLVM IR from bqi343/cp-notebook :: Contests/USACO Solutions/2015-16/Open 2016/Plat (bcs_editorial)

; 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::array" = type { [2 x %struct.mi] }
%struct.mi = type { i32 }

; 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: 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) #1

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local void @_ZNSt5arrayI2miLm2EEC2Ev(ptr noundef nonnull align 4 dereferenceable(8)) unnamed_addr #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZNKSt5arrayI2miLm2EEixEm(ptr noundef nonnull align 4 dereferenceable(8), i64 noundef) #3 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt5arrayI2miLm2EEixEm(ptr noundef nonnull align 4 dereferenceable(8), i64 noundef) #3 align 2

; Function Attrs: mustprogress uwtable
define dso_local i64 @_ZmiRKSt5arrayI2miLm2EES3_(ptr noundef nonnull align 4 dereferenceable(8) %0, ptr noundef nonnull align 4 dereferenceable(8) %1) #4 {
  %3 = alloca %"struct.std::array", align 4
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  %6 = alloca i32, align 4
  %7 = alloca %struct.mi, align 4
  %8 = alloca %struct.mi, align 4
  store ptr %0, ptr %4, align 8, !tbaa !5
  store ptr %1, ptr %5, align 8, !tbaa !5
  call void @_ZNSt5arrayI2miLm2EEC2Ev(ptr noundef nonnull align 4 dereferenceable(8) %3)
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #5
  store i32 0, ptr %6, align 4, !tbaa !9
  br label %9

9:                                                ; preds = %29, %2
  %10 = load i32, ptr %6, align 4, !tbaa !9
  %11 = icmp slt i32 %10, 2
  br i1 %11, label %13, label %12

12:                                               ; preds = %9
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #5
  br label %32

13:                                               ; preds = %9
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #5
  %14 = load ptr, ptr %4, align 8, !tbaa !5
  %15 = load i32, ptr %6, align 4, !tbaa !9
  %16 = sext i32 %15 to i64
  %17 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNKSt5arrayI2miLm2EEixEm(ptr noundef nonnull align 4 dereferenceable(8) %14, i64 noundef %16) #5
  call void @llvm.memcpy.p0.p0.i64(ptr align 4 %8, ptr align 4 %17, i64 4, i1 false), !tbaa.struct !11
  %18 = load ptr, ptr %5, align 8, !tbaa !5
  %19 = load i32, ptr %6, align 4, !tbaa !9
  %20 = sext i32 %19 to i64
  %21 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNKSt5arrayI2miLm2EEixEm(ptr noundef nonnull align 4 dereferenceable(8) %18, i64 noundef %20) #5
  %22 = getelementptr inbounds %struct.mi, ptr %8, i32 0, i32 0
  %23 = load i32, ptr %22, align 4
  %24 = call i32 @_Zmi2miRKS_(i32 %23, ptr noundef nonnull align 4 dereferenceable(4) %21)
  %25 = getelementptr inbounds %struct.mi, ptr %7, i32 0, i32 0
  store i32 %24, ptr %25, align 4
  %26 = load i32, ptr %6, align 4, !tbaa !9
  %27 = sext i32 %26 to i64
  %28 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt5arrayI2miLm2EEixEm(ptr noundef nonnull align 4 dereferenceable(8) %3, i64 noundef %27) #5
  call void @llvm.memcpy.p0.p0.i64(ptr align 4 %28, ptr align 4 %7, i64 4, i1 false), !tbaa.struct !11
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #5
  br label %29

29:                                               ; preds = %13
  %30 = load i32, ptr %6, align 4, !tbaa !9
  %31 = add nsw i32 %30, 1
  store i32 %31, ptr %6, align 4, !tbaa !9
  br label %9, !llvm.loop !12

32:                                               ; preds = %12
  %33 = getelementptr inbounds %"struct.std::array", ptr %3, i32 0, i32 0
  %34 = load i64, ptr %33, align 4
  ret i64 %34
}

; Function Attrs: mustprogress uwtable
declare dso_local i32 @_Zmi2miRKS_(i32, ptr noundef nonnull align 4 dereferenceable(4)) #4

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { nocallback nofree nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { 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 #3 = { 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 #4 = { 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 #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 = !{!"any pointer", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"int", !7, i64 0}
!11 = !{i64 0, i64 4, !9}
!12 = distinct !{!12, !13}
!13 = !{!"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"

%"struct.std::array" = type { [2 x %struct.mi] }
%struct.mi = type { i32 }

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local void @_ZNSt5arrayI2miLm2EEC2Ev(ptr noundef nonnull align 4 dereferenceable(8)) unnamed_addr #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZNKSt5arrayI2miLm2EEixEm(ptr noundef nonnull align 4 dereferenceable(8), i64 noundef) local_unnamed_addr #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt5arrayI2miLm2EEixEm(ptr noundef nonnull align 4 dereferenceable(8), i64 noundef) local_unnamed_addr #1 align 2

; Function Attrs: mustprogress uwtable
define dso_local i64 @_ZmiRKSt5arrayI2miLm2EES3_(ptr noundef nonnull align 4 dereferenceable(8) %0, ptr noundef nonnull align 4 dereferenceable(8) %1) local_unnamed_addr #2 {
  %3 = alloca %"struct.std::array", align 8
  call void @_ZNSt5arrayI2miLm2EEC2Ev(ptr noundef nonnull align 4 dereferenceable(8) %3)
  %4 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNKSt5arrayI2miLm2EEixEm(ptr noundef nonnull align 4 dereferenceable(8) %0, i64 noundef 0) #3
  %.sroa.0.0.copyload = load i32, ptr %4, align 4, !tbaa !5
  %5 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNKSt5arrayI2miLm2EEixEm(ptr noundef nonnull align 4 dereferenceable(8) %1, i64 noundef 0) #3
  %6 = call i32 @_Zmi2miRKS_(i32 %.sroa.0.0.copyload, ptr noundef nonnull align 4 dereferenceable(4) %5)
  %7 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt5arrayI2miLm2EEixEm(ptr noundef nonnull align 4 dereferenceable(8) %3, i64 noundef 0) #3
  store i32 %6, ptr %7, align 4, !tbaa !5
  %8 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNKSt5arrayI2miLm2EEixEm(ptr noundef nonnull align 4 dereferenceable(8) %0, i64 noundef 1) #3
  %.sroa.0.0.copyload.1 = load i32, ptr %8, align 4, !tbaa !5
  %9 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNKSt5arrayI2miLm2EEixEm(ptr noundef nonnull align 4 dereferenceable(8) %1, i64 noundef 1) #3
  %10 = call i32 @_Zmi2miRKS_(i32 %.sroa.0.0.copyload.1, ptr noundef nonnull align 4 dereferenceable(4) %9)
  %11 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt5arrayI2miLm2EEixEm(ptr noundef nonnull align 4 dereferenceable(8) %3, i64 noundef 1) #3
  store i32 %10, ptr %11, align 4, !tbaa !5
  %12 = load i64, ptr %3, align 8
  ret i64 %12
}

; Function Attrs: mustprogress uwtable
declare dso_local i32 @_Zmi2miRKS_(i32, ptr noundef nonnull align 4 dereferenceable(4)) local_unnamed_addr #2

attributes #0 = { 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 #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 = { 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"}


; Effective O3 passes: EarlyCSEPass,GVNPass,GlobalOptPass,IPSCCPPass,IndVarSimplifyPass,InferAlignmentPass,InferFunctionAttrsPass,InstCombinePass,LoopRotatePass,SROAPass,SimplifyCFGPass