; LLVM IR from UtkarshPathrabe/Competitive-Coding :: Codeforces/Codeforces Round 324 (Div 2)/Dima And Lisa.ll (Z7isPrimex)

; 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: mustprogress nounwind uwtable
define dso_local noundef zeroext i1 @_Z7isPrimex(i64 noundef %0) #0 {
  %2 = alloca i1, align 1
  %3 = alloca i64, align 8
  %4 = alloca i32, align 4
  %5 = alloca i64, align 8
  %6 = alloca i32, align 4
  store i64 %0, ptr %3, align 8, !tbaa !5
  %7 = load i64, ptr %3, align 8, !tbaa !5
  %8 = icmp sle i64 %7, 1
  br i1 %8, label %9, label %10

9:                                                ; preds = %1
  store i1 false, ptr %2, align 1
  br label %45

10:                                               ; preds = %1
  %11 = load i64, ptr %3, align 8, !tbaa !5
  %12 = icmp eq i64 %11, 2
  br i1 %12, label %13, label %14

13:                                               ; preds = %10
  store i1 true, ptr %2, align 1
  br label %45

14:                                               ; preds = %10
  %15 = load i64, ptr %3, align 8, !tbaa !5
  %16 = srem i64 %15, 2
  %17 = icmp eq i64 %16, 0
  br i1 %17, label %18, label %19

18:                                               ; preds = %14
  store i1 false, ptr %2, align 1
  br label %45

19:                                               ; preds = %14
  call void @llvm.lifetime.start.p0(i64 4, ptr %4) #3
  %20 = load i64, ptr %3, align 8, !tbaa !5
  %21 = sitofp i64 %20 to double
  %22 = call double @sqrt(double noundef %21) #3
  %23 = fptosi double %22 to i64
  %24 = trunc i64 %23 to i32
  store i32 %24, ptr %4, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %5) #3
  store i64 3, ptr %5, align 8, !tbaa !5
  br label %25

25:                                               ; preds = %38, %19
  %26 = load i64, ptr %5, align 8, !tbaa !5
  %27 = load i32, ptr %4, align 4, !tbaa !9
  %28 = sext i32 %27 to i64
  %29 = icmp sle i64 %26, %28
  br i1 %29, label %31, label %30

30:                                               ; preds = %25
  store i32 2, ptr %6, align 4
  br label %41

31:                                               ; preds = %25
  %32 = load i64, ptr %3, align 8, !tbaa !5
  %33 = load i64, ptr %5, align 8, !tbaa !5
  %34 = srem i64 %32, %33
  %35 = icmp eq i64 %34, 0
  br i1 %35, label %36, label %37

36:                                               ; preds = %31
  store i1 false, ptr %2, align 1
  store i32 1, ptr %6, align 4
  br label %41

37:                                               ; preds = %31
  br label %38

38:                                               ; preds = %37
  %39 = load i64, ptr %5, align 8, !tbaa !5
  %40 = add nsw i64 %39, 2
  store i64 %40, ptr %5, align 8, !tbaa !5
  br label %25, !llvm.loop !11

41:                                               ; preds = %36, %30
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #3
  %42 = load i32, ptr %6, align 4
  switch i32 %42, label %44 [
    i32 2, label %43
  ]

43:                                               ; preds = %41
  store i1 true, ptr %2, align 1
  store i32 1, ptr %6, align 4
  br label %44

44:                                               ; preds = %43, %41
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #3
  br label %45

45:                                               ; preds = %44, %18, %13, %9
  %46 = load i1, ptr %2, align 1
  ret i1 %46
}

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

; Function Attrs: nounwind
declare double @sqrt(double 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 = { 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 = { 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 = !{!"long long", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"int", !7, i64 0}
!11 = distinct !{!11, !12}
!12 = !{!"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: mustprogress nofree norecurse nosync nounwind willreturn memory(none) uwtable
define dso_local noundef zeroext i1 @_Z7isPrimex(i64 noundef %0) local_unnamed_addr #0 {
  %2 = icmp slt i64 %0, 2
  br i1 %2, label %.critedge, label %3

3:                                                ; preds = %1
  %4 = icmp eq i64 %0, 2
  br i1 %4, label %.critedge, label %5

5:                                                ; preds = %3
  %6 = and i64 %0, 1
  %7 = icmp eq i64 %6, 0
  br i1 %7, label %.critedge, label %8

8:                                                ; preds = %5
  %9 = uitofp nneg i64 %0 to double
  %sqrt = tail call double @llvm.sqrt.f64(double %9)
  %10 = fptosi double %sqrt to i64
  %sext = shl i64 %10, 32
  %11 = ashr exact i64 %sext, 32
  %.not13 = icmp slt i64 %11, 3
  br i1 %.not13, label %.critedge, label %.lr.ph

.lr.ph:                                           ; preds = %8, %.lr.ph
  %.01014 = phi i64 [ %13, %.lr.ph ], [ 3, %8 ]
  %12 = urem i64 %0, %.01014
  %.not17 = icmp ne i64 %12, 0
  %13 = add nuw nsw i64 %.01014, 2
  %.not = icmp sle i64 %13, %11
  %or.cond.not = select i1 %.not17, i1 %.not, i1 false
  br i1 %or.cond.not, label %.lr.ph, label %.critedge, !llvm.loop !5

.critedge:                                        ; preds = %.lr.ph, %8, %5, %3, %1
  %.2 = phi i1 [ false, %1 ], [ true, %3 ], [ false, %5 ], [ true, %8 ], [ %.not17, %.lr.ph ]
  ret i1 %.2
}

; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare double @llvm.sqrt.f64(double) #1

attributes #0 = { mustprogress nofree norecurse nosync nounwind willreturn memory(none) 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) }

!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: AggressiveInstCombinePass,CorrelatedValuePropagationPass,EarlyCSEPass,GlobalOptPass,IPSCCPPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LICMPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass