; LLVM IR from tangjz/acm-icpc :: hdu (6172)

; 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.Matrix = type { i32, i32, [2 x [2 x i32]] }

@A = external dso_local global %struct.Matrix, align 4
@B = external dso_local global %struct.Matrix, align 4
@C = external dso_local global %struct.Matrix, align 4
@t = external dso_local global i32, align 4
@n = external dso_local global i64, align 8
@.str = external hidden unnamed_addr constant [3 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [6 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [4 x i8], align 1

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() #0 {
  %1 = alloca i32, align 4
  %2 = alloca %struct.Matrix, align 4
  %3 = alloca %struct.Matrix, align 4
  %4 = alloca %struct.Matrix, align 4
  store i32 0, ptr %1, align 4
  store i32 1, ptr @A, align 4, !tbaa !5
  store i32 2, ptr getelementptr inbounds (%struct.Matrix, ptr @A, i32 0, i32 1), align 4, !tbaa !10
  store i32 1, ptr getelementptr inbounds (%struct.Matrix, ptr @A, i32 0, i32 2), align 4, !tbaa !11
  store i32 0, ptr getelementptr inbounds ([2 x i32], ptr getelementptr inbounds (%struct.Matrix, ptr @A, i32 0, i32 2), i64 0, i64 1), align 4, !tbaa !11
  store i32 2, ptr @B, align 4, !tbaa !5
  store i32 2, ptr getelementptr inbounds (%struct.Matrix, ptr @B, i32 0, i32 1), align 4, !tbaa !10
  store i32 500000007, ptr getelementptr inbounds (%struct.Matrix, ptr @B, i32 0, i32 2), align 4, !tbaa !11
  store i32 500000004, ptr getelementptr inbounds ([2 x i32], ptr getelementptr inbounds (%struct.Matrix, ptr @B, i32 0, i32 2), i64 0, i64 1), align 4, !tbaa !11
  store i32 500000020, ptr getelementptr inbounds ([2 x [2 x i32]], ptr getelementptr inbounds (%struct.Matrix, ptr @B, i32 0, i32 2), i64 0, i64 1), align 4, !tbaa !11
  store i32 500000007, ptr getelementptr inbounds ([2 x i32], ptr getelementptr inbounds ([2 x [2 x i32]], ptr getelementptr inbounds (%struct.Matrix, ptr @B, i32 0, i32 2), i64 0, i64 1), i64 0, i64 1), align 4, !tbaa !11
  store i32 2, ptr @C, align 4, !tbaa !5
  store i32 1, ptr getelementptr inbounds (%struct.Matrix, ptr @C, i32 0, i32 1), align 4, !tbaa !10
  store i32 1, ptr getelementptr inbounds (%struct.Matrix, ptr @C, i32 0, i32 2), align 4, !tbaa !11
  store i32 3, ptr getelementptr inbounds ([2 x [2 x i32]], ptr getelementptr inbounds (%struct.Matrix, ptr @C, i32 0, i32 2), i64 0, i64 1), align 4, !tbaa !11
  %5 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str, ptr noundef @t)
  br label %6

6:                                                ; preds = %10, %0
  %7 = load i32, ptr @t, align 4, !tbaa !11
  %8 = add nsw i32 %7, -1
  store i32 %8, ptr @t, align 4, !tbaa !11
  %9 = icmp ne i32 %7, 0
  br i1 %9, label %10, label %18

10:                                               ; preds = %6
  %11 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str.1, ptr noundef @n)
  call void @llvm.lifetime.start.p0(i64 24, ptr %2) #4
  call void @llvm.lifetime.start.p0(i64 24, ptr %3) #4
  call void @llvm.lifetime.start.p0(i64 24, ptr %4) #4
  %12 = load i64, ptr @n, align 8, !tbaa !12
  call void @_ZNK6Matrix3powEx(ptr dead_on_unwind writable sret(%struct.Matrix) align 4 %4, ptr noundef nonnull align 4 dereferenceable(24) @B, i64 noundef %12)
  call void @_ZNK6MatrixmlERKS_(ptr dead_on_unwind writable sret(%struct.Matrix) align 4 %3, ptr noundef nonnull align 4 dereferenceable(24) @A, ptr noundef nonnull align 4 dereferenceable(24) %4)
  call void @_ZNK6MatrixmlERKS_(ptr dead_on_unwind writable sret(%struct.Matrix) align 4 %2, ptr noundef nonnull align 4 dereferenceable(24) %3, ptr noundef nonnull align 4 dereferenceable(24) @C)
  call void @llvm.lifetime.end.p0(i64 24, ptr %4) #4
  call void @llvm.lifetime.end.p0(i64 24, ptr %3) #4
  %13 = getelementptr inbounds %struct.Matrix, ptr %2, i32 0, i32 2
  %14 = getelementptr inbounds [2 x [2 x i32]], ptr %13, i64 0, i64 0
  %15 = getelementptr inbounds [2 x i32], ptr %14, i64 0, i64 0
  %16 = load i32, ptr %15, align 4, !tbaa !11
  %17 = call i32 (ptr, ...) @printf(ptr noundef @.str.2, i32 noundef %16)
  call void @llvm.lifetime.end.p0(i64 24, ptr %2) #4
  br label %6, !llvm.loop !14

18:                                               ; preds = %6
  ret i32 0
}

declare i32 @__isoc99_scanf(ptr noundef, ...) #1

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

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNK6MatrixmlERKS_(ptr dead_on_unwind noalias writable sret(%struct.Matrix) align 4, ptr noundef nonnull align 4 dereferenceable(24), ptr noundef nonnull align 4 dereferenceable(24)) #3 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNK6Matrix3powEx(ptr dead_on_unwind noalias writable sret(%struct.Matrix) align 4, ptr noundef nonnull align 4 dereferenceable(24), i64 noundef) #3 align 2

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

declare i32 @printf(ptr noundef, ...) #1

attributes #0 = { 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 #1 = { "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 = { 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 = { 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, !7, i64 0}
!6 = !{!"_ZTS6Matrix", !7, i64 0, !7, i64 4, !8, i64 8}
!7 = !{!"int", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C++ TBAA"}
!10 = !{!6, !7, i64 4}
!11 = !{!7, !7, i64 0}
!12 = !{!13, !13, i64 0}
!13 = !{!"long long", !8, i64 0}
!14 = distinct !{!14, !15}
!15 = !{!"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.Matrix = type { i32, i32, [2 x [2 x i32]] }

@A = external dso_local global %struct.Matrix, align 4
@B = external dso_local global %struct.Matrix, align 4
@C = external dso_local global %struct.Matrix, align 4
@t = external dso_local global i32, align 4
@n = external dso_local global i64, align 8
@.str = external hidden unnamed_addr constant [3 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [6 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [4 x i8], align 1

; Function Attrs: mustprogress norecurse nounwind uwtable
define dso_local noundef i32 @main() local_unnamed_addr #0 {
  %1 = alloca %struct.Matrix, align 4
  %2 = alloca %struct.Matrix, align 4
  %3 = alloca %struct.Matrix, align 4
  store <4 x i32> <i32 1, i32 2, i32 1, i32 0>, ptr @A, align 4, !tbaa !5
  store <4 x i32> <i32 2, i32 2, i32 500000007, i32 500000004>, ptr @B, align 4, !tbaa !5
  store i32 500000020, ptr getelementptr inbounds (i8, ptr @B, i64 16), align 4, !tbaa !5
  store i32 500000007, ptr getelementptr inbounds (i8, ptr @B, i64 20), align 4, !tbaa !5
  store i32 2, ptr @C, align 4, !tbaa !9
  store i32 1, ptr getelementptr inbounds (i8, ptr @C, i64 4), align 4, !tbaa !11
  store i32 1, ptr getelementptr inbounds (i8, ptr @C, i64 8), align 4, !tbaa !5
  store i32 3, ptr getelementptr inbounds (i8, ptr @C, i64 16), align 4, !tbaa !5
  %4 = tail call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull @t)
  %5 = load i32, ptr @t, align 4, !tbaa !5
  %6 = add nsw i32 %5, -1
  store i32 %6, ptr @t, align 4, !tbaa !5
  %.not1 = icmp eq i32 %5, 0
  br i1 %.not1, label %._crit_edge, label %.lr.ph

.lr.ph:                                           ; preds = %0
  %7 = getelementptr inbounds i8, ptr %1, i64 8
  br label %8

8:                                                ; preds = %.lr.ph, %8
  %9 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str.1, ptr noundef nonnull @n)
  call void @llvm.lifetime.start.p0(i64 24, ptr nonnull %1) #4
  call void @llvm.lifetime.start.p0(i64 24, ptr nonnull %2) #4
  call void @llvm.lifetime.start.p0(i64 24, ptr nonnull %3) #4
  %10 = load i64, ptr @n, align 8, !tbaa !12
  call void @_ZNK6Matrix3powEx(ptr dead_on_unwind nonnull writable sret(%struct.Matrix) align 4 %3, ptr noundef nonnull align 4 dereferenceable(24) @B, i64 noundef %10)
  call void @_ZNK6MatrixmlERKS_(ptr dead_on_unwind nonnull writable sret(%struct.Matrix) align 4 %2, ptr noundef nonnull align 4 dereferenceable(24) @A, ptr noundef nonnull align 4 dereferenceable(24) %3)
  call void @_ZNK6MatrixmlERKS_(ptr dead_on_unwind nonnull writable sret(%struct.Matrix) align 4 %1, ptr noundef nonnull align 4 dereferenceable(24) %2, ptr noundef nonnull align 4 dereferenceable(24) @C)
  call void @llvm.lifetime.end.p0(i64 24, ptr nonnull %3) #4
  call void @llvm.lifetime.end.p0(i64 24, ptr nonnull %2) #4
  %11 = load i32, ptr %7, align 4, !tbaa !5
  %12 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.2, i32 noundef %11)
  call void @llvm.lifetime.end.p0(i64 24, ptr nonnull %1) #4
  %13 = load i32, ptr @t, align 4, !tbaa !5
  %14 = add nsw i32 %13, -1
  store i32 %14, ptr @t, align 4, !tbaa !5
  %.not = icmp eq i32 %13, 0
  br i1 %.not, label %._crit_edge, label %8, !llvm.loop !14

._crit_edge:                                      ; preds = %8, %0
  ret i32 0
}

; Function Attrs: nofree nounwind
declare noundef i32 @__isoc99_scanf(ptr nocapture noundef readonly, ...) local_unnamed_addr #1

; 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 nounwind uwtable
declare dso_local void @_ZNK6MatrixmlERKS_(ptr dead_on_unwind noalias writable sret(%struct.Matrix) align 4, ptr noundef nonnull align 4 dereferenceable(24), ptr noundef nonnull align 4 dereferenceable(24)) local_unnamed_addr #3 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNK6Matrix3powEx(ptr dead_on_unwind noalias writable sret(%struct.Matrix) align 4, ptr noundef nonnull align 4 dereferenceable(24), i64 noundef) local_unnamed_addr #3 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: nofree nounwind
declare noundef i32 @printf(ptr nocapture noundef readonly, ...) local_unnamed_addr #1

attributes #0 = { mustprogress norecurse 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 = { 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 #2 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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 = { 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, !6, i64 0}
!10 = !{!"_ZTS6Matrix", !6, i64 0, !6, i64 4, !7, i64 8}
!11 = !{!10, !6, i64 4}
!12 = !{!13, !13, i64 0}
!13 = !{!"long long", !7, i64 0}
!14 = distinct !{!14, !15}
!15 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: EarlyCSEPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LICMPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SLPVectorizerPass,SROAPass,SimplifyCFGPass,TailCallElimPass