; LLVM IR from chachaxw/data-structure-and-algorithm :: leetcode/math/is_prime.ll (ZN8Solution8isPrime3Ei)

; 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: inlinehint mustprogress nounwind uwtable
declare dso_local noundef double @_ZSt4sqrtIiEN9__gnu_cxx11__enable_ifIXsr12__is_integerIT_EE7__valueEdE6__typeES2_(i32 noundef) #1

; Function Attrs: mustprogress uwtable
define dso_local noundef zeroext i1 @_ZN8Solution8isPrime3Ei(ptr noundef nonnull align 1 dereferenceable(1) %0, i32 noundef %1) #2 align 2 {
  %3 = alloca i1, align 1
  %4 = alloca ptr, align 8
  %5 = alloca i32, align 4
  %6 = alloca i32, align 4
  %7 = alloca i32, align 4
  %8 = alloca i32, align 4
  store ptr %0, ptr %4, align 8, !tbaa !5
  store i32 %1, ptr %5, align 4, !tbaa !9
  %9 = load ptr, ptr %4, align 8
  %10 = load i32, ptr %5, align 4, !tbaa !9
  %11 = icmp sle i32 %10, 3
  br i1 %11, label %12, label %15

12:                                               ; preds = %2
  %13 = load i32, ptr %5, align 4, !tbaa !9
  %14 = icmp sgt i32 %13, 1
  store i1 %14, ptr %3, align 1
  br label %53

15:                                               ; preds = %2
  %16 = load i32, ptr %5, align 4, !tbaa !9
  %17 = srem i32 %16, 6
  %18 = icmp ne i32 %17, 1
  br i1 %18, label %19, label %24

19:                                               ; preds = %15
  %20 = load i32, ptr %5, align 4, !tbaa !9
  %21 = srem i32 %20, 6
  %22 = icmp ne i32 %21, 5
  br i1 %22, label %23, label %24

23:                                               ; preds = %19
  store i1 false, ptr %3, align 1
  br label %53

24:                                               ; preds = %19, %15
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #3
  %25 = load i32, ptr %5, align 4, !tbaa !9
  %26 = call noundef double @_ZSt4sqrtIiEN9__gnu_cxx11__enable_ifIXsr12__is_integerIT_EE7__valueEdE6__typeES2_(i32 noundef %25)
  %27 = fptosi double %26 to i32
  store i32 %27, ptr %6, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #3
  store i32 5, ptr %7, align 4, !tbaa !9
  br label %28

28:                                               ; preds = %46, %24
  %29 = load i32, ptr %7, align 4, !tbaa !9
  %30 = load i32, ptr %6, align 4, !tbaa !9
  %31 = icmp sle i32 %29, %30
  br i1 %31, label %33, label %32

32:                                               ; preds = %28
  store i32 2, ptr %8, align 4
  br label %49

33:                                               ; preds = %28
  %34 = load i32, ptr %5, align 4, !tbaa !9
  %35 = load i32, ptr %7, align 4, !tbaa !9
  %36 = srem i32 %34, %35
  %37 = icmp eq i32 %36, 0
  br i1 %37, label %44, label %38

38:                                               ; preds = %33
  %39 = load i32, ptr %5, align 4, !tbaa !9
  %40 = load i32, ptr %7, align 4, !tbaa !9
  %41 = add nsw i32 %40, 2
  %42 = srem i32 %39, %41
  %43 = icmp eq i32 %42, 0
  br i1 %43, label %44, label %45

44:                                               ; preds = %38, %33
  store i1 false, ptr %3, align 1
  store i32 1, ptr %8, align 4
  br label %49

45:                                               ; preds = %38
  br label %46

46:                                               ; preds = %45
  %47 = load i32, ptr %7, align 4, !tbaa !9
  %48 = add nsw i32 %47, 6
  store i32 %48, ptr %7, align 4, !tbaa !9
  br label %28, !llvm.loop !11

49:                                               ; preds = %44, %32
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #3
  %50 = load i32, ptr %8, align 4
  switch i32 %50, label %52 [
    i32 2, label %51
  ]

51:                                               ; preds = %49
  store i1 true, ptr %3, align 1
  store i32 1, ptr %8, align 4
  br label %52

52:                                               ; preds = %51, %49
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #3
  br label %53

53:                                               ; preds = %52, %23, %12
  %54 = load i1, ptr %3, align 1
  ret i1 %54
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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" }
attributes #2 = { 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 #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 = !{!"any pointer", !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: inlinehint mustprogress nounwind uwtable
declare dso_local noundef double @_ZSt4sqrtIiEN9__gnu_cxx11__enable_ifIXsr12__is_integerIT_EE7__valueEdE6__typeES2_(i32 noundef) local_unnamed_addr #0

; Function Attrs: mustprogress nounwind uwtable
define dso_local noundef zeroext i1 @_ZN8Solution8isPrime3Ei(ptr nocapture noundef nonnull readnone align 1 dereferenceable(1) %0, i32 noundef %1) local_unnamed_addr #1 align 2 {
  %3 = icmp slt i32 %1, 4
  br i1 %3, label %4, label %6

4:                                                ; preds = %2
  %5 = icmp sgt i32 %1, 1
  br label %.critedge

6:                                                ; preds = %2
  %7 = urem i32 %1, 6
  switch i32 %7, label %.critedge [
    i32 1, label %8
    i32 5, label %8
  ]

8:                                                ; preds = %6, %6
  %9 = tail call noundef double @_ZSt4sqrtIiEN9__gnu_cxx11__enable_ifIXsr12__is_integerIT_EE7__valueEdE6__typeES2_(i32 noundef %1)
  %10 = fptosi double %9 to i32
  %.not2021 = icmp slt i32 %10, 5
  br i1 %.not2021, label %.critedge, label %.lr.ph

11:                                               ; preds = %15
  %12 = add nuw nsw i32 %.01422, 6
  %.not20 = icmp sgt i32 %12, %10
  br i1 %.not20, label %.critedge, label %.lr.ph, !llvm.loop !5

.lr.ph:                                           ; preds = %8, %11
  %.01422 = phi i32 [ %12, %11 ], [ 5, %8 ]
  %13 = urem i32 %1, %.01422
  %14 = icmp eq i32 %13, 0
  br i1 %14, label %.critedge, label %15

15:                                               ; preds = %.lr.ph
  %16 = add nuw nsw i32 %.01422, 2
  %17 = urem i32 %1, %16
  %18 = icmp eq i32 %17, 0
  br i1 %18, label %.critedge, label %11

.critedge:                                        ; preds = %.lr.ph, %15, %11, %8, %6, %4
  %.2 = phi i1 [ %5, %4 ], [ false, %6 ], [ true, %8 ], [ false, %.lr.ph ], [ false, %15 ], [ true, %11 ]
  ret i1 %.2
}

attributes #0 = { 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 #1 = { 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,JumpThreadingPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass