; LLVM IR from upupming/algorithm :: AdvancedLevel_C++/1156. Sexy Primes (20).ll (Z7IsPrimei)

; 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 uwtable
define dso_local noundef zeroext i1 @_Z7IsPrimei(i32 noundef %0) #0 {
  %2 = alloca i1, align 1
  %3 = alloca i32, align 4
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  %6 = alloca i32, align 4
  store i32 %0, ptr %3, align 4, !tbaa !5
  %7 = load i32, ptr %3, align 4, !tbaa !5
  %8 = icmp slt i32 %7, 3
  br i1 %8, label %9, label %12

9:                                                ; preds = %1
  %10 = load i32, ptr %3, align 4, !tbaa !5
  %11 = icmp eq i32 %10, 2
  store i1 %11, ptr %2, align 1
  br label %40

12:                                               ; preds = %1
  %13 = load i32, ptr %3, align 4, !tbaa !5
  %14 = srem i32 %13, 2
  %15 = icmp eq i32 %14, 0
  br i1 %15, label %16, label %17

16:                                               ; preds = %12
  store i1 false, ptr %2, align 1
  br label %40

17:                                               ; preds = %12
  call void @llvm.lifetime.start.p0(i64 4, ptr %4) #3
  %18 = load i32, ptr %3, align 4, !tbaa !5
  %19 = call noundef double @_ZSt4sqrtIiEN9__gnu_cxx11__enable_ifIXsr12__is_integerIT_EE7__valueEdE6__typeES2_(i32 noundef %18)
  %20 = fptosi double %19 to i32
  store i32 %20, ptr %4, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #3
  store i32 3, ptr %5, align 4, !tbaa !5
  br label %21

21:                                               ; preds = %33, %17
  %22 = load i32, ptr %5, align 4, !tbaa !5
  %23 = load i32, ptr %4, align 4, !tbaa !5
  %24 = icmp sle i32 %22, %23
  br i1 %24, label %26, label %25

25:                                               ; preds = %21
  store i32 2, ptr %6, align 4
  br label %36

26:                                               ; preds = %21
  %27 = load i32, ptr %3, align 4, !tbaa !5
  %28 = load i32, ptr %5, align 4, !tbaa !5
  %29 = srem i32 %27, %28
  %30 = icmp eq i32 %29, 0
  br i1 %30, label %31, label %32

31:                                               ; preds = %26
  store i1 false, ptr %2, align 1
  store i32 1, ptr %6, align 4
  br label %36

32:                                               ; preds = %26
  br label %33

33:                                               ; preds = %32
  %34 = load i32, ptr %5, align 4, !tbaa !5
  %35 = add nsw i32 %34, 2
  store i32 %35, ptr %5, align 4, !tbaa !5
  br label %21, !llvm.loop !9

36:                                               ; preds = %31, %25
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #3
  %37 = load i32, ptr %6, align 4
  switch i32 %37, label %39 [
    i32 2, label %38
  ]

38:                                               ; preds = %36
  store i1 true, ptr %2, align 1
  store i32 1, ptr %6, align 4
  br label %39

39:                                               ; preds = %38, %36
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #3
  br label %40

40:                                               ; preds = %39, %16, %9
  %41 = load i1, ptr %2, align 1
  ret i1 %41
}

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

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef double @_ZSt4sqrtIiEN9__gnu_cxx11__enable_ifIXsr12__is_integerIT_EE7__valueEdE6__typeES2_(i32 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 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 = { inlinehint 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 #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"}


; 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 nounwind uwtable
define dso_local noundef zeroext i1 @_Z7IsPrimei(i32 noundef %0) local_unnamed_addr #0 {
  %2 = icmp slt i32 %0, 3
  br i1 %2, label %3, label %5

3:                                                ; preds = %1
  %4 = icmp eq i32 %0, 2
  br label %.critedge

5:                                                ; preds = %1
  %6 = and i32 %0, 1
  %7 = icmp eq i32 %6, 0
  br i1 %7, label %.critedge, label %8

8:                                                ; preds = %5
  %9 = tail call noundef double @_ZSt4sqrtIiEN9__gnu_cxx11__enable_ifIXsr12__is_integerIT_EE7__valueEdE6__typeES2_(i32 noundef %0)
  %10 = fptosi double %9 to i32
  %.not14 = icmp slt i32 %10, 3
  br i1 %.not14, label %.critedge, label %.lr.ph

.lr.ph:                                           ; preds = %8, %.lr.ph
  %.01015 = phi i32 [ %12, %.lr.ph ], [ 3, %8 ]
  %11 = urem i32 %0, %.01015
  %.not18 = icmp ne i32 %11, 0
  %12 = add nuw nsw i32 %.01015, 2
  %.not = icmp sle i32 %12, %10
  %or.cond.not = select i1 %.not18, i1 %.not, i1 false
  br i1 %or.cond.not, label %.lr.ph, label %.critedge, !llvm.loop !5

.critedge:                                        ; preds = %.lr.ph, %8, %5, %3
  %.2 = phi i1 [ %4, %3 ], [ false, %5 ], [ true, %8 ], [ %.not18, %.lr.ph ]
  ret i1 %.2
}

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef double @_ZSt4sqrtIiEN9__gnu_cxx11__enable_ifIXsr12__is_integerIT_EE7__valueEdE6__typeES2_(i32 noundef) local_unnamed_addr #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 = { inlinehint 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" }

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