; LLVM IR from imteekay/algorithms :: competitive-programming/uri/just_in_time.ll (Z7isPrimoi)

; 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: mustprogress uwtable
define dso_local noundef zeroext i1 @_Z7isPrimoi(i32 noundef %0) #1 {
  %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, 2
  br i1 %8, label %9, label %10

9:                                                ; preds = %1
  store i1 false, ptr %2, align 1
  br label %43

10:                                               ; preds = %1
  %11 = load i32, ptr %3, align 4, !tbaa !5
  %12 = icmp eq i32 %11, 2
  br i1 %12, label %13, label %14

13:                                               ; preds = %10
  store i1 true, ptr %2, align 1
  br label %43

14:                                               ; preds = %10
  %15 = load i32, ptr %3, align 4, !tbaa !5
  %16 = srem i32 %15, 2
  %17 = icmp eq i32 %16, 0
  br i1 %17, label %18, label %19

18:                                               ; preds = %14
  store i1 false, ptr %2, align 1
  br label %43

19:                                               ; preds = %14
  call void @llvm.lifetime.start.p0(i64 4, ptr %4) #3
  %20 = load i32, ptr %3, align 4, !tbaa !5
  %21 = call noundef double @_ZSt4sqrtIiEN9__gnu_cxx11__enable_ifIXsr12__is_integerIT_EE7__valueEdE6__typeES2_(i32 noundef %20)
  %22 = fadd double %21, 1.000000e+00
  %23 = fptosi double %22 to i32
  store i32 %23, 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 %24

24:                                               ; preds = %36, %19
  %25 = load i32, ptr %5, align 4, !tbaa !5
  %26 = load i32, ptr %4, align 4, !tbaa !5
  %27 = icmp sle i32 %25, %26
  br i1 %27, label %29, label %28

28:                                               ; preds = %24
  store i32 2, ptr %6, align 4
  br label %39

29:                                               ; preds = %24
  %30 = load i32, ptr %3, align 4, !tbaa !5
  %31 = load i32, ptr %5, align 4, !tbaa !5
  %32 = srem i32 %30, %31
  %33 = icmp eq i32 %32, 0
  br i1 %33, label %34, label %35

34:                                               ; preds = %29
  store i1 false, ptr %2, align 1
  store i32 1, ptr %6, align 4
  br label %39

35:                                               ; preds = %29
  br label %36

36:                                               ; preds = %35
  %37 = load i32, ptr %5, align 4, !tbaa !5
  %38 = add nsw i32 %37, 2
  store i32 %38, ptr %5, align 4, !tbaa !5
  br label %24, !llvm.loop !9

39:                                               ; preds = %34, %28
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #3
  %40 = load i32, ptr %6, align 4
  switch i32 %40, label %42 [
    i32 2, label %41
  ]

41:                                               ; preds = %39
  store i1 true, ptr %2, align 1
  store i32 1, ptr %6, align 4
  br label %42

42:                                               ; preds = %41, %39
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #3
  br label %43

43:                                               ; preds = %42, %18, %13, %9
  %44 = load i1, ptr %2, align 1
  ret i1 %44
}

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef double @_ZSt4sqrtIiEN9__gnu_cxx11__enable_ifIXsr12__is_integerIT_EE7__valueEdE6__typeES2_(i32 noundef) #2

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { 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 #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 @_Z7isPrimoi(i32 noundef %0) local_unnamed_addr #0 {
  %2 = icmp slt i32 %0, 2
  br i1 %2, label %.critedge, label %3

3:                                                ; preds = %1
  %4 = icmp eq i32 %0, 2
  br i1 %4, label %.critedge, label %5

5:                                                ; preds = %3
  %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 = fadd double %9, 1.000000e+00
  %11 = fptosi double %10 to i32
  %.not13 = icmp slt i32 %11, 3
  br i1 %.not13, label %.critedge, label %.lr.ph

.lr.ph:                                           ; preds = %8, %.lr.ph
  %.01014 = phi i32 [ %13, %.lr.ph ], [ 3, %8 ]
  %12 = urem i32 %0, %.01014
  %.not17 = icmp ne i32 %12, 0
  %13 = add nuw nsw i32 %.01014, 2
  %.not = icmp sle i32 %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: 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