; LLVM IR from ACM-VIT/Algos-for-all-Amigos :: Computer_Science/2_Competitive_Programming/Codeforces/800_rating (p01_CopyCopy)

; 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"

; 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: nounwind uwtable
define dso_local i32 @findNextPrime(i32 noundef %0) #1 {
  %2 = alloca i32, align 4
  %3 = alloca i32, align 4
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  store i32 %0, ptr %3, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %4) #3
  store i32 2, ptr %4, align 4, !tbaa !5
  br label %6

6:                                                ; preds = %25, %1
  %7 = load i32, ptr %4, align 4, !tbaa !5
  %8 = load i32, ptr %3, align 4, !tbaa !5
  %9 = sitofp i32 %8 to double
  %10 = call double @pow(double noundef %9, double noundef 5.000000e-01) #3
  %11 = fptosi double %10 to i32
  %12 = add nsw i32 %11, 1
  %13 = icmp sle i32 %7, %12
  br i1 %13, label %15, label %14

14:                                               ; preds = %6
  store i32 2, ptr %5, align 4
  br label %28

15:                                               ; preds = %6
  %16 = load i32, ptr %3, align 4, !tbaa !5
  %17 = load i32, ptr %4, align 4, !tbaa !5
  %18 = srem i32 %16, %17
  %19 = icmp eq i32 %18, 0
  br i1 %19, label %20, label %24

20:                                               ; preds = %15
  %21 = load i32, ptr %3, align 4, !tbaa !5
  %22 = add nsw i32 %21, 1
  %23 = call i32 @findNextPrime(i32 noundef %22)
  store i32 %23, ptr %2, align 4
  store i32 1, ptr %5, align 4
  br label %28

24:                                               ; preds = %15
  br label %25

25:                                               ; preds = %24
  %26 = load i32, ptr %4, align 4, !tbaa !5
  %27 = add nsw i32 %26, 1
  store i32 %27, ptr %4, align 4, !tbaa !5
  br label %6, !llvm.loop !9

28:                                               ; preds = %20, %14
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #3
  %29 = load i32, ptr %5, align 4
  switch i32 %29, label %34 [
    i32 2, label %30
    i32 1, label %32
  ]

30:                                               ; preds = %28
  %31 = load i32, ptr %3, align 4, !tbaa !5
  store i32 %31, ptr %2, align 4
  br label %32

32:                                               ; preds = %30, %28
  %33 = load i32, ptr %2, align 4
  ret i32 %33

34:                                               ; preds = %28
  unreachable
}

; Function Attrs: nounwind
declare double @pow(double noundef, double noundef) #2

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { 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 = { 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/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"

; Function Attrs: nounwind uwtable
define dso_local i32 @findNextPrime(i32 noundef %0) local_unnamed_addr #0 {
  %2 = sitofp i32 %0 to double
  %sqrt1116 = tail call double @sqrt(double %2) #2
  %abs1217 = tail call double @llvm.fabs.f64(double %sqrt1116)
  %3 = fptosi double %abs1217 to i32
  %.not1318 = icmp slt i32 %3, 1
  br i1 %.not1318, label %tailrecurse._crit_edge, label %.lr.ph

.lr.ph:                                           ; preds = %1, %tailrecurse
  %4 = phi double [ %12, %tailrecurse ], [ %2, %1 ]
  %.tr19 = phi i32 [ %11, %tailrecurse ], [ %0, %1 ]
  br label %8

5:                                                ; preds = %8
  %6 = add nuw nsw i32 %.0914, 1
  %sqrt = tail call double @sqrt(double %4) #2
  %abs = tail call double @llvm.fabs.f64(double %sqrt)
  %7 = fptosi double %abs to i32
  %.not = icmp sgt i32 %.0914, %7
  br i1 %.not, label %tailrecurse._crit_edge, label %8, !llvm.loop !5

8:                                                ; preds = %.lr.ph, %5
  %.0914 = phi i32 [ 2, %.lr.ph ], [ %6, %5 ]
  %9 = srem i32 %.tr19, %.0914
  %10 = icmp eq i32 %9, 0
  br i1 %10, label %tailrecurse, label %5

tailrecurse:                                      ; preds = %8
  %11 = add nsw i32 %.tr19, 1
  %12 = sitofp i32 %11 to double
  %sqrt11 = tail call double @sqrt(double %12) #2
  %abs12 = tail call double @llvm.fabs.f64(double %sqrt11)
  %13 = fptosi double %abs12 to i32
  %.not13 = icmp slt i32 %13, 1
  br i1 %.not13, label %tailrecurse._crit_edge, label %.lr.ph

tailrecurse._crit_edge:                           ; preds = %tailrecurse, %5, %1
  %.tr.lcssa = phi i32 [ %0, %1 ], [ %.tr19, %5 ], [ %11, %tailrecurse ]
  ret i32 %.tr.lcssa
}

declare double @sqrt(double) local_unnamed_addr

; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare double @llvm.fabs.f64(double) #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 speculatable willreturn memory(none) }
attributes #2 = { 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 = distinct !{!5, !6}
!6 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: CorrelatedValuePropagationPass,GVNPass,GlobalOptPass,IPSCCPPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LICMPass,LoopInstSimplifyPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,SROAPass,SimplifyCFGPass,TailCallElimPass