; LLVM IR from tangjz/acm-icpc :: 51nod/1080.ll (Z13decompositionx)

; 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"

@cnt = external dso_local global i32, align 4
@p = external dso_local global [65 x i64], align 16

; 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 nounwind uwtable
declare dso_local noundef zeroext i1 @_Z12miller_rabinx(i64 noundef) #1

; Function Attrs: mustprogress uwtable
declare dso_local noundef i64 @_Z11pollard_rhox(i64 noundef) #2

; Function Attrs: mustprogress uwtable
define dso_local void @_Z13decompositionx(i64 noundef %0) #2 {
  %2 = alloca i64, align 8
  %3 = alloca i64, align 8
  store i64 %0, ptr %2, align 8, !tbaa !5
  %4 = load i64, ptr %2, align 8, !tbaa !5
  %5 = call noundef zeroext i1 @_Z12miller_rabinx(i64 noundef %4)
  br i1 %5, label %6, label %12

6:                                                ; preds = %1
  %7 = load i64, ptr %2, align 8, !tbaa !5
  %8 = load i32, ptr @cnt, align 4, !tbaa !9
  %9 = add nsw i32 %8, 1
  store i32 %9, ptr @cnt, align 4, !tbaa !9
  %10 = sext i32 %8 to i64
  %11 = getelementptr inbounds [65 x i64], ptr @p, i64 0, i64 %10
  store i64 %7, ptr %11, align 8, !tbaa !5
  br label %24

12:                                               ; preds = %1
  call void @llvm.lifetime.start.p0(i64 8, ptr %3) #3
  br label %13

13:                                               ; preds = %18, %12
  %14 = load i64, ptr %2, align 8, !tbaa !5
  %15 = call noundef i64 @_Z11pollard_rhox(i64 noundef %14)
  store i64 %15, ptr %3, align 8, !tbaa !5
  %16 = load i64, ptr %2, align 8, !tbaa !5
  %17 = icmp eq i64 %15, %16
  br i1 %17, label %18, label %19

18:                                               ; preds = %13
  br label %13, !llvm.loop !11

19:                                               ; preds = %13
  %20 = load i64, ptr %3, align 8, !tbaa !5
  call void @_Z13decompositionx(i64 noundef %20)
  %21 = load i64, ptr %2, align 8, !tbaa !5
  %22 = load i64, ptr %3, align 8, !tbaa !5
  %23 = sdiv i64 %21, %22
  call void @_Z13decompositionx(i64 noundef %23)
  call void @llvm.lifetime.end.p0(i64 8, ptr %3) #3
  br label %24

24:                                               ; preds = %19, %6
  ret void
}

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

@cnt = external dso_local local_unnamed_addr global i32, align 4
@p = external dso_local local_unnamed_addr global [65 x i64], align 16

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef zeroext i1 @_Z12miller_rabinx(i64 noundef) local_unnamed_addr #0

; Function Attrs: mustprogress uwtable
declare dso_local noundef i64 @_Z11pollard_rhox(i64 noundef) local_unnamed_addr #1

; Function Attrs: mustprogress uwtable
define dso_local void @_Z13decompositionx(i64 noundef %0) local_unnamed_addr #1 {
  %2 = tail call noundef zeroext i1 @_Z12miller_rabinx(i64 noundef %0)
  br i1 %2, label %tailrecurse._crit_edge, label %.preheader

.preheader:                                       ; preds = %1, %tailrecurse
  %.tr8 = phi i64 [ %10, %tailrecurse ], [ %0, %1 ]
  br label %7

tailrecurse._crit_edge:                           ; preds = %tailrecurse, %1
  %.tr.lcssa = phi i64 [ %0, %1 ], [ %10, %tailrecurse ]
  %3 = load i32, ptr @cnt, align 4, !tbaa !5
  %4 = add nsw i32 %3, 1
  store i32 %4, ptr @cnt, align 4, !tbaa !5
  %5 = sext i32 %3 to i64
  %6 = getelementptr inbounds [65 x i64], ptr @p, i64 0, i64 %5
  store i64 %.tr.lcssa, ptr %6, align 8, !tbaa !9
  ret void

7:                                                ; preds = %.preheader, %7
  %8 = tail call noundef i64 @_Z11pollard_rhox(i64 noundef %.tr8)
  %9 = icmp eq i64 %8, %.tr8
  br i1 %9, label %7, label %tailrecurse, !llvm.loop !11

tailrecurse:                                      ; preds = %7
  tail call void @_Z13decompositionx(i64 noundef %8)
  %10 = sdiv i64 %.tr8, %8
  %11 = tail call noundef zeroext i1 @_Z12miller_rabinx(i64 noundef %10)
  br i1 %11, label %tailrecurse._crit_edge, label %.preheader
}

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 = { 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" }

!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 = !{!10, !10, i64 0}
!10 = !{!"long long", !7, i64 0}
!11 = distinct !{!11, !12}
!12 = !{!"llvm.loop.mustprogress"}


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