; LLVM IR from lzyrapx/Competitive-Programming :: HDUOJ (1197)

; 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"

@.str = external hidden unnamed_addr constant [4 x i8], align 1

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i32 @_Z5checkii(i32 noundef, 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 norecurse uwtable
define dso_local noundef i32 @main() #2 {
  %1 = alloca i32, align 4
  %2 = alloca i32, align 4
  %3 = alloca i32, align 4
  store i32 0, ptr %1, align 4
  call void @llvm.lifetime.start.p0(i64 4, ptr %2) #4
  store i32 2992, ptr %2, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #4
  store i32 2992, ptr %2, align 4, !tbaa !5
  br label %4

4:                                                ; preds = %23, %0
  %5 = load i32, ptr %2, align 4, !tbaa !5
  %6 = icmp sle i32 %5, 9999
  br i1 %6, label %7, label %26

7:                                                ; preds = %4
  %8 = load i32, ptr %2, align 4, !tbaa !5
  %9 = call noundef i32 @_Z5checkii(i32 noundef %8, i32 noundef 10)
  %10 = load i32, ptr %2, align 4, !tbaa !5
  %11 = call noundef i32 @_Z5checkii(i32 noundef %10, i32 noundef 12)
  %12 = icmp eq i32 %9, %11
  br i1 %12, label %13, label %22

13:                                               ; preds = %7
  %14 = load i32, ptr %2, align 4, !tbaa !5
  %15 = call noundef i32 @_Z5checkii(i32 noundef %14, i32 noundef 10)
  %16 = load i32, ptr %2, align 4, !tbaa !5
  %17 = call noundef i32 @_Z5checkii(i32 noundef %16, i32 noundef 16)
  %18 = icmp eq i32 %15, %17
  br i1 %18, label %19, label %22

19:                                               ; preds = %13
  %20 = load i32, ptr %2, align 4, !tbaa !5
  %21 = call i32 (ptr, ...) @printf(ptr noundef @.str, i32 noundef %20)
  br label %22

22:                                               ; preds = %19, %13, %7
  br label %23

23:                                               ; preds = %22
  %24 = load i32, ptr %2, align 4, !tbaa !5
  %25 = add nsw i32 %24, 1
  store i32 %25, ptr %2, align 4, !tbaa !5
  br label %4, !llvm.loop !9

26:                                               ; preds = %4
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr %2) #4
  ret i32 0
}

declare i32 @printf(ptr noundef, ...) #3

attributes #0 = { 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 #1 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { 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 #3 = { "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 = distinct !{!9, !10}
!10 = !{!"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"

@.str = external hidden unnamed_addr constant [4 x i8], align 1

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i32 @_Z5checkii(i32 noundef, i32 noundef) local_unnamed_addr #0

; Function Attrs: mustprogress norecurse nounwind uwtable
define dso_local noundef i32 @main() local_unnamed_addr #1 {
  br label %1

1:                                                ; preds = %0, %11
  %.07 = phi i32 [ 2992, %0 ], [ %12, %11 ]
  %2 = tail call noundef i32 @_Z5checkii(i32 noundef %.07, i32 noundef 10)
  %3 = tail call noundef i32 @_Z5checkii(i32 noundef %.07, i32 noundef 12)
  %4 = icmp eq i32 %2, %3
  br i1 %4, label %5, label %11

5:                                                ; preds = %1
  %6 = tail call noundef i32 @_Z5checkii(i32 noundef %.07, i32 noundef 10)
  %7 = tail call noundef i32 @_Z5checkii(i32 noundef %.07, i32 noundef 16)
  %8 = icmp eq i32 %6, %7
  br i1 %8, label %9, label %11

9:                                                ; preds = %5
  %10 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str, i32 noundef %.07)
  br label %11

11:                                               ; preds = %1, %5, %9
  %12 = add nuw nsw i32 %.07, 1
  %exitcond.not = icmp eq i32 %12, 10000
  br i1 %exitcond.not, label %13, label %1, !llvm.loop !5

13:                                               ; preds = %11
  ret i32 0
}

; Function Attrs: nofree nounwind
declare noundef i32 @printf(ptr nocapture noundef readonly, ...) local_unnamed_addr #2

attributes #0 = { 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 #1 = { 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 #2 = { 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" }

!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"}


; Effective O3 passes: GlobalOptPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,LoopRotatePass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass