; LLVM IR from VastoLorde95/Competitive-Programming :: Codeforces/305 Division 2/Problem C/C.ll (Z5cyclex)

; 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"

@m = external dso_local global i64, align 8
@x1 = external dso_local global i64, align 8
@Y1 = 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
define dso_local noundef i64 @_Z5cyclex(i64 noundef %0) #1 {
  %2 = alloca i64, align 8
  %3 = alloca i64, align 8
  %4 = alloca i64, align 8
  %5 = alloca i64, align 8
  %6 = alloca i32, align 4
  store i64 %0, ptr %3, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %4) #2
  store i64 1, ptr %4, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %5) #2
  %7 = load i64, ptr @x1, align 8, !tbaa !5
  %8 = load i64, ptr %3, align 8, !tbaa !5
  %9 = mul nsw i64 %7, %8
  %10 = load i64, ptr @Y1, align 8, !tbaa !5
  %11 = add nsw i64 %9, %10
  %12 = load i64, ptr @m, align 8, !tbaa !5
  %13 = srem i64 %11, %12
  store i64 %13, ptr %5, align 8, !tbaa !5
  br label %14

14:                                               ; preds = %24, %1
  %15 = load i64, ptr %5, align 8, !tbaa !5
  %16 = load i64, ptr %3, align 8, !tbaa !5
  %17 = icmp ne i64 %15, %16
  br i1 %17, label %18, label %22

18:                                               ; preds = %14
  %19 = load i64, ptr %4, align 8, !tbaa !5
  %20 = load i64, ptr @m, align 8, !tbaa !5
  %21 = icmp sle i64 %19, %20
  br label %22

22:                                               ; preds = %18, %14
  %23 = phi i1 [ false, %14 ], [ %21, %18 ]
  br i1 %23, label %24, label %34

24:                                               ; preds = %22
  %25 = load i64, ptr %4, align 8, !tbaa !5
  %26 = add nsw i64 %25, 1
  store i64 %26, ptr %4, align 8, !tbaa !5
  %27 = load i64, ptr @x1, align 8, !tbaa !5
  %28 = load i64, ptr %5, align 8, !tbaa !5
  %29 = mul nsw i64 %27, %28
  %30 = load i64, ptr @Y1, align 8, !tbaa !5
  %31 = add nsw i64 %29, %30
  %32 = load i64, ptr @m, align 8, !tbaa !5
  %33 = srem i64 %31, %32
  store i64 %33, ptr %5, align 8, !tbaa !5
  br label %14, !llvm.loop !9

34:                                               ; preds = %22
  %35 = load i64, ptr %4, align 8, !tbaa !5
  %36 = load i64, ptr @m, align 8, !tbaa !5
  %37 = icmp sgt i64 %35, %36
  br i1 %37, label %38, label %39

38:                                               ; preds = %34
  store i64 -1, ptr %2, align 8
  store i32 1, ptr %6, align 4
  br label %41

39:                                               ; preds = %34
  %40 = load i64, ptr %4, align 8, !tbaa !5
  store i64 %40, ptr %2, align 8
  store i32 1, ptr %6, align 4
  br label %41

41:                                               ; preds = %39, %38
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #2
  call void @llvm.lifetime.end.p0(i64 8, ptr %4) #2
  %42 = load i64, ptr %2, align 8
  ret i64 %42
}

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 = { 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"

@m = external dso_local local_unnamed_addr global i64, align 8
@x1 = external dso_local local_unnamed_addr global i64, align 8
@Y1 = external dso_local local_unnamed_addr global i64, align 8

; Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(read, argmem: none, inaccessiblemem: none) uwtable
define dso_local noundef i64 @_Z5cyclex(i64 noundef %0) local_unnamed_addr #0 {
  %2 = load i64, ptr @x1, align 8, !tbaa !5
  %3 = load i64, ptr @Y1, align 8, !tbaa !5
  %4 = load i64, ptr @m, align 8
  br label %5

5:                                                ; preds = %5, %1
  %.09 = phi i64 [ 1, %1 ], [ %9, %5 ]
  %.pn13 = phi i64 [ %0, %1 ], [ %.0, %5 ]
  %.pn12 = mul nsw i64 %.pn13, %2
  %.pn = add nsw i64 %.pn12, %3
  %.0 = srem i64 %.pn, %4
  %6 = icmp ne i64 %.0, %0
  %7 = icmp sle i64 %.09, %4
  %8 = select i1 %6, i1 %7, i1 false
  %9 = add nuw nsw i64 %.09, 1
  br i1 %8, label %5, label %10, !llvm.loop !9

10:                                               ; preds = %5
  %11 = icmp sgt i64 %.09, %4
  %..09 = select i1 %11, i64 -1, i64 %.09
  ret i64 %..09
}

attributes #0 = { mustprogress nofree norecurse nosync nounwind willreturn memory(read, argmem: none, inaccessiblemem: 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 = !{!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,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,LCSSAPass,LoopRotatePass,LoopUnrollPass,PostOrderFunctionAttrsPass,ReassociatePass,SROAPass,SimplifyCFGPass