; LLVM IR from DionysiosB/CodeForces :: 1200-1299/1236B-AliceAndTheListOfPresents.ll (Z11moduloPowerxxx)

; 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 @_Z11moduloPowerxxx(i64 noundef %0, i64 noundef %1, i64 noundef %2) #0 {
  %4 = alloca i64, align 8
  %5 = alloca i64, align 8
  %6 = alloca i64, align 8
  %7 = alloca i64, align 8
  %8 = alloca i64, align 8
  store i64 %0, ptr %5, align 8, !tbaa !5
  store i64 %1, ptr %6, align 8, !tbaa !5
  store i64 %2, ptr %7, align 8, !tbaa !5
  %9 = load i64, ptr %6, align 8, !tbaa !5
  %10 = icmp slt i64 %9, 0
  br i1 %10, label %11, label %12

11:                                               ; preds = %3
  store i64 0, ptr %4, align 8
  br label %40

12:                                               ; preds = %3
  %13 = load i64, ptr %6, align 8, !tbaa !5
  %14 = icmp eq i64 %13, 0
  br i1 %14, label %15, label %16

15:                                               ; preds = %12
  store i64 1, ptr %4, align 8
  br label %40

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

17:                                               ; preds = %30, %16
  %18 = load i64, ptr %6, align 8, !tbaa !5
  %19 = icmp sgt i64 %18, 0
  br i1 %19, label %20, label %38

20:                                               ; preds = %17
  %21 = load i64, ptr %6, align 8, !tbaa !5
  %22 = srem i64 %21, 2
  %23 = icmp ne i64 %22, 0
  br i1 %23, label %24, label %30

24:                                               ; preds = %20
  %25 = load i64, ptr %8, align 8, !tbaa !5
  %26 = load i64, ptr %5, align 8, !tbaa !5
  %27 = mul nsw i64 %25, %26
  %28 = load i64, ptr %7, align 8, !tbaa !5
  %29 = srem i64 %27, %28
  store i64 %29, ptr %8, align 8, !tbaa !5
  br label %30

30:                                               ; preds = %24, %20
  %31 = load i64, ptr %6, align 8, !tbaa !5
  %32 = sdiv i64 %31, 2
  store i64 %32, ptr %6, align 8, !tbaa !5
  %33 = load i64, ptr %5, align 8, !tbaa !5
  %34 = load i64, ptr %5, align 8, !tbaa !5
  %35 = mul nsw i64 %33, %34
  %36 = load i64, ptr %7, align 8, !tbaa !5
  %37 = srem i64 %35, %36
  store i64 %37, ptr %5, align 8, !tbaa !5
  br label %17, !llvm.loop !9

38:                                               ; preds = %17
  %39 = load i64, ptr %8, align 8, !tbaa !5
  store i64 %39, ptr %4, align 8
  call void @llvm.lifetime.end.p0(i64 8, ptr %8) #2
  br label %40

40:                                               ; preds = %38, %15, %11
  %41 = load i64, ptr %4, align 8
  ret i64 %41
}

; 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 @_Z11moduloPowerxxx(i64 noundef %0, i64 noundef %1, i64 noundef %2) local_unnamed_addr #0 {
  %4 = icmp slt i64 %1, 0
  br i1 %4, label %.loopexit, label %5

5:                                                ; preds = %3
  %.not20 = icmp eq i64 %1, 0
  br i1 %.not20, label %.loopexit, label %.lr.ph

.lr.ph:                                           ; preds = %5, %10
  %.019 = phi i64 [ %.1, %10 ], [ 1, %5 ]
  %.01418 = phi i64 [ %11, %10 ], [ %1, %5 ]
  %.01517 = phi i64 [ %13, %10 ], [ %0, %5 ]
  %6 = and i64 %.01418, 1
  %.not = icmp eq i64 %6, 0
  br i1 %.not, label %10, label %7

7:                                                ; preds = %.lr.ph
  %8 = mul nsw i64 %.019, %.01517
  %9 = srem i64 %8, %2
  br label %10

10:                                               ; preds = %7, %.lr.ph
  %.1 = phi i64 [ %9, %7 ], [ %.019, %.lr.ph ]
  %11 = lshr i64 %.01418, 1
  %12 = mul nsw i64 %.01517, %.01517
  %13 = srem i64 %12, %2
  %.not21 = icmp ult i64 %.01418, 2
  br i1 %.not21, label %.loopexit, label %.lr.ph, !llvm.loop !5

.loopexit:                                        ; preds = %10, %5, %3
  %.013 = phi i64 [ 0, %3 ], [ 1, %5 ], [ %.1, %10 ]
  ret i64 %.013
}

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