; LLVM IR from eyangch/competitive-programming :: Codeforces/1738/e.ll (Z4calcxxx)

; 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"

@MOD = external dso_local global i64, align 8

; 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 i64 @_Z3nCrxx(i64 noundef, i64 noundef) #1

; Function Attrs: mustprogress nounwind uwtable
define dso_local noundef i64 @_Z4calcxxx(i64 noundef %0, i64 noundef %1, i64 noundef %2) #1 {
  %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
  %9 = alloca i64, align 8
  store i64 %0, ptr %4, align 8, !tbaa !5
  store i64 %1, ptr %5, align 8, !tbaa !5
  store i64 %2, ptr %6, align 8, !tbaa !5
  %10 = load i64, ptr %4, align 8, !tbaa !5
  %11 = load i64, ptr %5, align 8, !tbaa !5
  %12 = icmp sgt i64 %10, %11
  br i1 %12, label %13, label %14

13:                                               ; preds = %3
  call void @_ZSt4swapIxENSt9enable_ifIXsr6__and_ISt6__not_ISt15__is_tuple_likeIT_EESt21is_move_constructibleIS3_ESt18is_move_assignableIS3_EEE5valueEvE4typeERS3_SC_(ptr noundef nonnull align 8 dereferenceable(8) %4, ptr noundef nonnull align 8 dereferenceable(8) %5) #3
  br label %14

14:                                               ; preds = %13, %3
  %15 = load i64, ptr %6, align 8, !tbaa !5
  %16 = xor i64 %15, -1
  %17 = icmp ne i64 %16, 0
  br i1 %17, label %20, label %18

18:                                               ; preds = %14
  %19 = load i64, ptr %4, align 8, !tbaa !5
  store i64 %19, ptr %6, align 8, !tbaa !5
  br label %20

20:                                               ; preds = %18, %14
  call void @llvm.lifetime.start.p0(i64 8, ptr %7) #3
  store i64 0, ptr %7, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %8) #3
  store i64 0, ptr %8, align 8, !tbaa !5
  br label %21

21:                                               ; preds = %41, %20
  %22 = load i64, ptr %8, align 8, !tbaa !5
  %23 = load i64, ptr %6, align 8, !tbaa !5
  %24 = icmp sle i64 %22, %23
  br i1 %24, label %26, label %25

25:                                               ; preds = %21
  call void @llvm.lifetime.end.p0(i64 8, ptr %8) #3
  br label %44

26:                                               ; preds = %21
  call void @llvm.lifetime.start.p0(i64 8, ptr %9) #3
  %27 = load i64, ptr %4, align 8, !tbaa !5
  %28 = load i64, ptr %8, align 8, !tbaa !5
  %29 = call noundef i64 @_Z3nCrxx(i64 noundef %27, i64 noundef %28)
  %30 = load i64, ptr %5, align 8, !tbaa !5
  %31 = load i64, ptr %8, align 8, !tbaa !5
  %32 = call noundef i64 @_Z3nCrxx(i64 noundef %30, i64 noundef %31)
  %33 = mul nsw i64 %29, %32
  %34 = load i64, ptr @MOD, align 8, !tbaa !5
  %35 = srem i64 %33, %34
  store i64 %35, ptr %9, align 8, !tbaa !5
  %36 = load i64, ptr %7, align 8, !tbaa !5
  %37 = load i64, ptr %9, align 8, !tbaa !5
  %38 = add nsw i64 %36, %37
  %39 = load i64, ptr @MOD, align 8, !tbaa !5
  %40 = srem i64 %38, %39
  store i64 %40, ptr %7, align 8, !tbaa !5
  call void @llvm.lifetime.end.p0(i64 8, ptr %9) #3
  br label %41

41:                                               ; preds = %26
  %42 = load i64, ptr %8, align 8, !tbaa !5
  %43 = add nsw i64 %42, 1
  store i64 %43, ptr %8, align 8, !tbaa !5
  br label %21, !llvm.loop !9

44:                                               ; preds = %25
  %45 = load i64, ptr %7, align 8, !tbaa !5
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #3
  ret i64 %45
}

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local void @_ZSt4swapIxENSt9enable_ifIXsr6__and_ISt6__not_ISt15__is_tuple_likeIT_EESt21is_move_constructibleIS3_ESt18is_move_assignableIS3_EEE5valueEvE4typeERS3_SC_(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef nonnull align 8 dereferenceable(8)) #2

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 = { 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 = !{!"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"

@MOD = external dso_local local_unnamed_addr global i64, align 8

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i64 @_Z3nCrxx(i64 noundef, i64 noundef) local_unnamed_addr #0

; Function Attrs: mustprogress nounwind uwtable
define dso_local noundef i64 @_Z4calcxxx(i64 noundef %0, i64 noundef %1, i64 noundef %2) local_unnamed_addr #0 {
  %4 = alloca i64, align 8
  %5 = alloca i64, align 8
  store i64 %0, ptr %4, align 8, !tbaa !5
  store i64 %1, ptr %5, align 8, !tbaa !5
  %6 = icmp sgt i64 %0, %1
  br i1 %6, label %7, label %8

7:                                                ; preds = %3
  call void @_ZSt4swapIxENSt9enable_ifIXsr6__and_ISt6__not_ISt15__is_tuple_likeIT_EESt21is_move_constructibleIS3_ESt18is_move_assignableIS3_EEE5valueEvE4typeERS3_SC_(ptr noundef nonnull align 8 dereferenceable(8) %4, ptr noundef nonnull align 8 dereferenceable(8) %5) #2
  %.pre = load i64, ptr %4, align 8
  br label %8

8:                                                ; preds = %7, %3
  %9 = phi i64 [ %.pre, %7 ], [ %0, %3 ]
  %.not = icmp eq i64 %2, -1
  %spec.select = select i1 %.not, i64 %9, i64 %2
  %.not1112 = icmp slt i64 %spec.select, 0
  br i1 %.not1112, label %._crit_edge, label %.lr.ph

._crit_edge:                                      ; preds = %.lr.ph, %8
  %.010.lcssa = phi i64 [ 0, %8 ], [ %18, %.lr.ph ]
  ret i64 %.010.lcssa

.lr.ph:                                           ; preds = %8, %.lr.ph
  %.0914 = phi i64 [ %19, %.lr.ph ], [ 0, %8 ]
  %.01013 = phi i64 [ %18, %.lr.ph ], [ 0, %8 ]
  %10 = load i64, ptr %4, align 8, !tbaa !5
  %11 = call noundef i64 @_Z3nCrxx(i64 noundef %10, i64 noundef %.0914)
  %12 = load i64, ptr %5, align 8, !tbaa !5
  %13 = call noundef i64 @_Z3nCrxx(i64 noundef %12, i64 noundef %.0914)
  %14 = mul nsw i64 %13, %11
  %15 = load i64, ptr @MOD, align 8, !tbaa !5
  %16 = srem i64 %14, %15
  %17 = add nsw i64 %16, %.01013
  %18 = srem i64 %17, %15
  %19 = add nuw i64 %.0914, 1
  %exitcond.not = icmp eq i64 %.0914, %spec.select
  br i1 %exitcond.not, label %._crit_edge, label %.lr.ph, !llvm.loop !9
}

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local void @_ZSt4swapIxENSt9enable_ifIXsr6__and_ISt6__not_ISt15__is_tuple_likeIT_EESt21is_move_constructibleIS3_ESt18is_move_assignableIS3_EEE5valueEvE4typeERS3_SC_(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef nonnull align 8 dereferenceable(8)) 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" }
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"}


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