; LLVM IR from hanzohasashi33/Competetive_programming :: CodeChef/Easy (Prime_Generator)

; 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 [3 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [5 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [4 x i8], align 1

; Function Attrs: nounwind uwtable
define dso_local 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 i32, align 4
  %6 = alloca i32, align 4
  %7 = alloca i32, align 4
  store i32 0, ptr %1, align 4
  call void @llvm.lifetime.start.p0(i64 4, ptr %2) #4
  %8 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str, ptr noundef %2)
  br label %9

9:                                                ; preds = %52, %0
  %10 = load i32, ptr %2, align 4, !tbaa !5
  %11 = icmp sgt i32 %10, 0
  br i1 %11, label %12, label %55

12:                                               ; preds = %9
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #4
  call void @llvm.lifetime.start.p0(i64 4, ptr %4) #4
  %13 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str.1, ptr noundef %3, ptr noundef %4)
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #4
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #4
  %14 = load i32, ptr %3, align 4, !tbaa !5
  store i32 %14, ptr %5, align 4, !tbaa !5
  br label %15

15:                                               ; preds = %49, %12
  %16 = load i32, ptr %5, align 4, !tbaa !5
  %17 = load i32, ptr %4, align 4, !tbaa !5
  %18 = icmp sle i32 %16, %17
  br i1 %18, label %19, label %52

19:                                               ; preds = %15
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #4
  store i32 0, ptr %7, align 4, !tbaa !5
  store i32 2, ptr %6, align 4, !tbaa !5
  br label %20

20:                                               ; preds = %36, %19
  %21 = load i32, ptr %6, align 4, !tbaa !5
  %22 = sitofp i32 %21 to double
  %23 = load i32, ptr %5, align 4, !tbaa !5
  %24 = sitofp i32 %23 to double
  %25 = call double @sqrt(double noundef %24) #4
  %26 = fcmp ole double %22, %25
  br i1 %26, label %27, label %39

27:                                               ; preds = %20
  %28 = load i32, ptr %5, align 4, !tbaa !5
  %29 = load i32, ptr %6, align 4, !tbaa !5
  %30 = srem i32 %28, %29
  %31 = icmp eq i32 %30, 0
  br i1 %31, label %32, label %35

32:                                               ; preds = %27
  %33 = load i32, ptr %7, align 4, !tbaa !5
  %34 = add nsw i32 %33, 1
  store i32 %34, ptr %7, align 4, !tbaa !5
  br label %39

35:                                               ; preds = %27
  br label %36

36:                                               ; preds = %35
  %37 = load i32, ptr %6, align 4, !tbaa !5
  %38 = add nsw i32 %37, 1
  store i32 %38, ptr %6, align 4, !tbaa !5
  br label %20, !llvm.loop !9

39:                                               ; preds = %32, %20
  %40 = load i32, ptr %7, align 4, !tbaa !5
  %41 = icmp eq i32 %40, 0
  br i1 %41, label %42, label %48

42:                                               ; preds = %39
  %43 = load i32, ptr %5, align 4, !tbaa !5
  %44 = icmp ne i32 %43, 1
  br i1 %44, label %45, label %48

45:                                               ; preds = %42
  %46 = load i32, ptr %5, align 4, !tbaa !5
  %47 = call i32 (ptr, ...) @printf(ptr noundef @.str.2, i32 noundef %46)
  br label %48

48:                                               ; preds = %45, %42, %39
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #4
  br label %49

49:                                               ; preds = %48
  %50 = load i32, ptr %5, align 4, !tbaa !5
  %51 = add nsw i32 %50, 1
  store i32 %51, ptr %5, align 4, !tbaa !5
  br label %15, !llvm.loop !11

52:                                               ; preds = %15
  %53 = load i32, ptr %2, align 4, !tbaa !5
  %54 = add nsw i32 %53, -1
  store i32 %54, ptr %2, align 4, !tbaa !5
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #4
  br label %9, !llvm.loop !12

55:                                               ; preds = %9
  call void @llvm.lifetime.end.p0(i64 4, ptr %2) #4
  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: nounwind
declare double @sqrt(double noundef) #3

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

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

attributes #0 = { 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 = { "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 "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/C++ TBAA"}
!9 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}
!11 = distinct !{!11, !10}
!12 = distinct !{!12, !10}


; 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 [3 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [5 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [4 x i8], align 1

; Function Attrs: nofree 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
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %1) #4
  %4 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull %1)
  %.pr = load i32, ptr %1, align 4, !tbaa !5
  %5 = icmp sgt i32 %.pr, 0
  br i1 %5, label %.lr.ph21, label %._crit_edge22

.lr.ph21:                                         ; preds = %0, %._crit_edge19
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %2) #4
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %3) #4
  %6 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str.1, ptr noundef nonnull %2, ptr noundef nonnull %3)
  %7 = load i32, ptr %2, align 4, !tbaa !5
  %8 = load i32, ptr %3, align 4, !tbaa !5
  %.not17 = icmp sgt i32 %7, %8
  br i1 %.not17, label %._crit_edge19, label %.preheader

.preheader:                                       ; preds = %.lr.ph21, %.thread
  %.01318 = phi i32 [ %21, %.thread ], [ %7, %.lr.ph21 ]
  %9 = sitofp i32 %.01318 to double
  %10 = call double @sqrt(double noundef %9) #4
  %11 = fcmp ult double %10, 2.000000e+00
  br i1 %11, label %._crit_edge, label %.lr.ph

12:                                               ; preds = %.lr.ph
  %13 = add nuw nsw i32 %.01216, 1
  %14 = uitofp nneg i32 %13 to double
  %15 = call double @sqrt(double noundef %9) #4
  %16 = fcmp ult double %15, %14
  br i1 %16, label %._crit_edge, label %.lr.ph, !llvm.loop !9

.lr.ph:                                           ; preds = %.preheader, %12
  %.01216 = phi i32 [ %13, %12 ], [ 2, %.preheader ]
  %17 = srem i32 %.01318, %.01216
  %18 = icmp eq i32 %17, 0
  br i1 %18, label %.thread, label %12

._crit_edge:                                      ; preds = %12, %.preheader
  %.not = icmp eq i32 %.01318, 1
  br i1 %.not, label %.thread, label %19

19:                                               ; preds = %._crit_edge
  %20 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.2, i32 noundef %.01318)
  br label %.thread

.thread:                                          ; preds = %.lr.ph, %19, %._crit_edge
  %21 = add nsw i32 %.01318, 1
  %22 = load i32, ptr %3, align 4, !tbaa !5
  %.not.not = icmp slt i32 %.01318, %22
  br i1 %.not.not, label %.preheader, label %._crit_edge19, !llvm.loop !11

._crit_edge19:                                    ; preds = %.thread, %.lr.ph21
  %23 = load i32, ptr %1, align 4, !tbaa !5
  %24 = add nsw i32 %23, -1
  store i32 %24, ptr %1, align 4, !tbaa !5
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %3) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %2) #4
  %25 = icmp sgt i32 %23, 1
  br i1 %25, label %.lr.ph21, label %._crit_edge22, !llvm.loop !12

._crit_edge22:                                    ; preds = %._crit_edge19, %0
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %1) #4
  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 nofree nounwind willreturn memory(write)
declare double @sqrt(double noundef) local_unnamed_addr #3

; Function Attrs: nofree nounwind
declare noundef i32 @printf(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

attributes #0 = { nofree 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 = { mustprogress nofree nounwind willreturn memory(write) "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/C++ TBAA"}
!9 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}
!11 = distinct !{!11, !10}
!12 = distinct !{!12, !10}


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