; LLVM IR from DionysiosB/CodeForces :: 0100-0199/185A-Plant.ll (Z9findPowerxx)

; 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 i64 @_Z9findPowerxx(i64 noundef %0, i64 noundef %1) #0 {
  %3 = alloca i64, align 8
  %4 = alloca i64, align 8
  %5 = alloca i64, align 8
  %6 = alloca i64, align 8
  %7 = alloca i32, align 4
  %8 = alloca i64, align 8
  store i64 %0, ptr %4, align 8, !tbaa !5
  store i64 %1, ptr %5, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #2
  store i64 1000000007, ptr %6, align 8, !tbaa !5
  %9 = load i64, ptr %5, align 8, !tbaa !5
  %10 = icmp eq i64 %9, 0
  br i1 %10, label %11, label %12

11:                                               ; preds = %2
  store i64 1, ptr %3, align 8
  store i32 1, ptr %7, align 4
  br label %41

12:                                               ; preds = %2
  %13 = load i64, ptr %5, align 8, !tbaa !5
  %14 = icmp eq i64 %13, 1
  br i1 %14, label %15, label %17

15:                                               ; preds = %12
  %16 = load i64, ptr %4, align 8, !tbaa !5
  store i64 %16, ptr %3, align 8
  store i32 1, ptr %7, align 4
  br label %41

17:                                               ; preds = %12
  call void @llvm.lifetime.start.p0(i64 8, ptr %8) #2
  store i64 1, ptr %8, align 8, !tbaa !5
  br label %18

18:                                               ; preds = %31, %17
  %19 = load i64, ptr %5, align 8, !tbaa !5
  %20 = icmp sgt i64 %19, 0
  br i1 %20, label %21, label %39

21:                                               ; preds = %18
  %22 = load i64, ptr %5, align 8, !tbaa !5
  %23 = srem i64 %22, 2
  %24 = icmp ne i64 %23, 0
  br i1 %24, label %25, label %31

25:                                               ; preds = %21
  %26 = load i64, ptr %4, align 8, !tbaa !5
  %27 = load i64, ptr %8, align 8, !tbaa !5
  %28 = mul i64 %27, %26
  store i64 %28, ptr %8, align 8, !tbaa !5
  %29 = load i64, ptr %8, align 8, !tbaa !5
  %30 = urem i64 %29, 1000000007
  store i64 %30, ptr %8, align 8, !tbaa !5
  br label %31

31:                                               ; preds = %25, %21
  %32 = load i64, ptr %4, align 8, !tbaa !5
  %33 = load i64, ptr %4, align 8, !tbaa !5
  %34 = mul nsw i64 %33, %32
  store i64 %34, ptr %4, align 8, !tbaa !5
  %35 = load i64, ptr %4, align 8, !tbaa !5
  %36 = urem i64 %35, 1000000007
  store i64 %36, ptr %4, align 8, !tbaa !5
  %37 = load i64, ptr %5, align 8, !tbaa !5
  %38 = sdiv i64 %37, 2
  store i64 %38, ptr %5, align 8, !tbaa !5
  br label %18, !llvm.loop !9

39:                                               ; preds = %18
  %40 = load i64, ptr %8, align 8, !tbaa !5
  store i64 %40, ptr %3, align 8
  store i32 1, ptr %7, align 4
  call void @llvm.lifetime.end.p0(i64 8, ptr %8) #2
  br label %41

41:                                               ; preds = %39, %15, %11
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #2
  %42 = load i64, ptr %3, align 8
  ret i64 %42
}

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

; 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 }

!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 = 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 nofree norecurse nosync nounwind willreturn memory(none) uwtable
define dso_local noundef i64 @_Z9findPowerxx(i64 noundef %0, i64 noundef %1) local_unnamed_addr #0 {
  switch i64 %1, label %.preheader [
    i64 0, label %.loopexit
    i64 1, label %4
  ]

.preheader:                                       ; preds = %2
  %3 = icmp sgt i64 %1, 0
  br i1 %3, label %.lr.ph, label %.loopexit

4:                                                ; preds = %2
  br label %.loopexit

.lr.ph:                                           ; preds = %.preheader, %9
  %.020 = phi i64 [ %.1, %9 ], [ 1, %.preheader ]
  %.01519 = phi i64 [ %12, %9 ], [ %1, %.preheader ]
  %.01618 = phi i64 [ %11, %9 ], [ %0, %.preheader ]
  %5 = and i64 %.01519, 1
  %.not = icmp eq i64 %5, 0
  br i1 %.not, label %9, label %6

6:                                                ; preds = %.lr.ph
  %7 = mul i64 %.020, %.01618
  %8 = urem i64 %7, 1000000007
  br label %9

9:                                                ; preds = %6, %.lr.ph
  %.1 = phi i64 [ %8, %6 ], [ %.020, %.lr.ph ]
  %10 = mul nsw i64 %.01618, %.01618
  %11 = urem i64 %10, 1000000007
  %12 = lshr i64 %.01519, 1
  %.not21 = icmp ult i64 %.01519, 2
  br i1 %.not21, label %.loopexit, label %.lr.ph, !llvm.loop !5

.loopexit:                                        ; preds = %9, %.preheader, %2, %4
  %.014 = phi i64 [ %0, %4 ], [ 1, %2 ], [ 1, %.preheader ], [ %.1, %9 ]
  ret i64 %.014
}

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" }

!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: GVNPass,GlobalOptPass,IPSCCPPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass