; LLVM IR from tangjz/acm-icpc :: poj (3379)

; 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 [9 x i8], align 1
@.str.1 = 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 i32, align 4
  %3 = alloca i32, align 4
  %4 = alloca i32, align 4
  %5 = alloca [10001 x i8], align 16
  %6 = alloca i32, align 4
  %7 = alloca i32, align 4
  %8 = alloca i32, align 4
  store i32 0, ptr %1, align 4
  call void @llvm.lifetime.start.p0(i64 4, ptr %2) #3
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #3
  call void @llvm.lifetime.start.p0(i64 4, ptr %4) #3
  call void @llvm.lifetime.start.p0(i64 10001, ptr %5) #3
  %9 = getelementptr inbounds [10001 x i8], ptr %5, i64 0, i64 0
  %10 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str, ptr noundef %2, ptr noundef %3, ptr noundef %4, ptr noundef %9)
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #3
  store i32 0, ptr %6, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #3
  store i32 0, ptr %7, align 4, !tbaa !5
  br label %11

11:                                               ; preds = %36, %0
  %12 = load i32, ptr %4, align 4, !tbaa !5
  %13 = icmp sgt i32 %12, 0
  br i1 %13, label %14, label %49

14:                                               ; preds = %11
  %15 = load i32, ptr %6, align 4, !tbaa !5
  %16 = icmp ne i32 %15, 0
  %17 = xor i1 %16, true
  %18 = zext i1 %17 to i32
  %19 = load i32, ptr %7, align 4, !tbaa !5
  %20 = add nsw i32 %19, %18
  store i32 %20, ptr %7, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #3
  %21 = load i32, ptr %2, align 4, !tbaa !5
  %22 = load i32, ptr %4, align 4, !tbaa !5
  %23 = add nsw i32 %21, %22
  %24 = load i32, ptr %6, align 4, !tbaa !5
  %25 = sub nsw i32 %23, %24
  %26 = sub nsw i32 %25, 1
  %27 = load i32, ptr %3, align 4, !tbaa !5
  %28 = add nsw i32 %27, 1
  %29 = sdiv i32 %26, %28
  %30 = add nsw i32 %29, 1
  store i32 %30, ptr %8, align 4, !tbaa !5
  %31 = load i32, ptr %8, align 4, !tbaa !5
  %32 = load i32, ptr %4, align 4, !tbaa !5
  %33 = icmp sgt i32 %31, %32
  br i1 %33, label %34, label %36

34:                                               ; preds = %14
  %35 = load i32, ptr %4, align 4, !tbaa !5
  store i32 %35, ptr %8, align 4, !tbaa !5
  br label %36

36:                                               ; preds = %34, %14
  %37 = load i32, ptr %8, align 4, !tbaa !5
  %38 = load i32, ptr %4, align 4, !tbaa !5
  %39 = sub nsw i32 %38, %37
  store i32 %39, ptr %4, align 4, !tbaa !5
  %40 = load i32, ptr %6, align 4, !tbaa !5
  %41 = load i32, ptr %8, align 4, !tbaa !5
  %42 = load i32, ptr %3, align 4, !tbaa !5
  %43 = mul nsw i32 %41, %42
  %44 = add nsw i32 %40, %43
  %45 = load i32, ptr %2, align 4, !tbaa !5
  %46 = load i32, ptr %4, align 4, !tbaa !5
  %47 = add nsw i32 %45, %46
  %48 = srem i32 %44, %47
  store i32 %48, ptr %6, align 4, !tbaa !5
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #3
  br label %11, !llvm.loop !9

49:                                               ; preds = %11
  %50 = load i32, ptr %6, align 4, !tbaa !5
  %51 = sext i32 %50 to i64
  %52 = getelementptr inbounds [10001 x i8], ptr %5, i64 0, i64 %51
  %53 = load i8, ptr %52, align 1, !tbaa !11
  %54 = sext i8 %53 to i32
  %55 = sub nsw i32 %54, 65
  %56 = load i32, ptr %7, align 4, !tbaa !5
  %57 = add nsw i32 %55, %56
  %58 = srem i32 %57, 26
  %59 = add nsw i32 %58, 65
  %60 = call i32 (ptr, ...) @printf(ptr noundef @.str.1, i32 noundef %59)
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #3
  call void @llvm.lifetime.end.p0(i64 10001, ptr %5) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %2) #3
  ret i32 0
}

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1

declare i32 @__isoc99_scanf(ptr noundef, ...) #2

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1

declare i32 @printf(ptr noundef, ...) #2

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 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { "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"}
!9 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}
!11 = !{!7, !7, i64 0}


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

; Function Attrs: mustprogress nofree norecurse nounwind uwtable
define dso_local noundef i32 @main() local_unnamed_addr #0 {
  %1 = alloca i32, align 4
  %2 = alloca i32, align 4
  %3 = alloca i32, align 4
  %4 = alloca [10001 x i8], align 16
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %1) #3
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %2) #3
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %3) #3
  call void @llvm.lifetime.start.p0(i64 10001, ptr nonnull %4) #3
  %5 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull %1, ptr noundef nonnull %2, ptr noundef nonnull %3, ptr noundef nonnull %4)
  %.pr = load i32, ptr %3, align 4, !tbaa !5
  %6 = icmp sgt i32 %.pr, 0
  br i1 %6, label %.lr.ph, label %27

.lr.ph:                                           ; preds = %0
  %7 = load i32, ptr %1, align 4, !tbaa !5
  %8 = load i32, ptr %2, align 4, !tbaa !5
  %9 = add nsw i32 %8, 1
  br label %10

10:                                               ; preds = %.lr.ph, %10
  %.0915 = phi i32 [ 0, %.lr.ph ], [ %13, %10 ]
  %.01014 = phi i32 [ 0, %.lr.ph ], [ %23, %10 ]
  %11 = phi i32 [ %.pr, %.lr.ph ], [ %19, %10 ]
  %.not = icmp eq i32 %.01014, 0
  %12 = zext i1 %.not to i32
  %13 = add nuw nsw i32 %.0915, %12
  %14 = xor i32 %.01014, -1
  %15 = add i32 %11, %14
  %16 = add i32 %15, %7
  %17 = sdiv i32 %16, %9
  %18 = add nsw i32 %17, 1
  %.not13 = icmp slt i32 %17, %11
  %spec.select = select i1 %.not13, i32 %18, i32 %11
  %19 = sub nsw i32 %11, %spec.select
  %20 = mul nsw i32 %spec.select, %8
  %21 = add nsw i32 %20, %.01014
  %22 = add nsw i32 %19, %7
  %23 = srem i32 %21, %22
  %24 = icmp sgt i32 %19, 0
  br i1 %24, label %10, label %._crit_edge, !llvm.loop !9

._crit_edge:                                      ; preds = %10
  store i32 %19, ptr %3, align 4, !tbaa !5
  %25 = sext i32 %23 to i64
  %26 = add nsw i32 %13, -65
  br label %27

27:                                               ; preds = %._crit_edge, %0
  %.010.lcssa = phi i64 [ %25, %._crit_edge ], [ 0, %0 ]
  %.09.lcssa = phi i32 [ %26, %._crit_edge ], [ -65, %0 ]
  %28 = getelementptr inbounds [10001 x i8], ptr %4, i64 0, i64 %.010.lcssa
  %29 = load i8, ptr %28, align 1, !tbaa !11
  %30 = sext i8 %29 to i32
  %31 = add i32 %.09.lcssa, %30
  %32 = srem i32 %31, 26
  %33 = add nsw i32 %32, 65
  %34 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.1, i32 noundef %33)
  call void @llvm.lifetime.end.p0(i64 10001, ptr nonnull %4) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %3) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %2) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %1) #3
  ret i32 0
}

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: nofree nounwind
declare noundef i32 @__isoc99_scanf(ptr nocapture noundef readonly, ...) local_unnamed_addr #2

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1

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

attributes #0 = { mustprogress nofree 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 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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" }
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"}
!9 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}
!11 = !{!7, !7, i64 0}


; Effective O3 passes: EarlyCSEPass,GVNPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LICMPass,LoopRotatePass,LoopUnrollPass,PostOrderFunctionAttrsPass,ReassociatePass,SROAPass,SimplifyCFGPass