; LLVM IR from xirc/cp-algorithm :: atcoder/abc057/C/main.ll (Z5solvel)

; 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: 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 uwtable
declare dso_local noundef i32 @_Z1fll(i64 noundef, i64 noundef) #1

; Function Attrs: mustprogress uwtable
define dso_local noundef i32 @_Z5solvel(i64 noundef %0) #1 {
  %2 = alloca i64, align 8
  %3 = alloca i32, align 4
  %4 = alloca i64, align 8
  %5 = alloca i64, align 8
  %6 = alloca i32, align 4
  store i64 %0, ptr %2, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #3
  %7 = load i64, ptr %2, align 8, !tbaa !5
  %8 = call noundef i32 @_Z1fll(i64 noundef 1, i64 noundef %7)
  store i32 %8, ptr %3, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %4) #3
  store i64 2, ptr %4, align 8, !tbaa !5
  br label %9

9:                                                ; preds = %31, %1
  %10 = load i64, ptr %4, align 8, !tbaa !5
  %11 = load i64, ptr %4, align 8, !tbaa !5
  %12 = mul nsw i64 %10, %11
  %13 = load i64, ptr %2, align 8, !tbaa !5
  %14 = icmp sle i64 %12, %13
  br i1 %14, label %16, label %15

15:                                               ; preds = %9
  call void @llvm.lifetime.end.p0(i64 8, ptr %4) #3
  br label %34

16:                                               ; preds = %9
  %17 = load i64, ptr %2, align 8, !tbaa !5
  %18 = load i64, ptr %4, align 8, !tbaa !5
  %19 = srem i64 %17, %18
  %20 = icmp ne i64 %19, 0
  br i1 %20, label %21, label %22

21:                                               ; preds = %16
  br label %31

22:                                               ; preds = %16
  call void @llvm.lifetime.start.p0(i64 8, ptr %5) #3
  %23 = load i64, ptr %2, align 8, !tbaa !5
  %24 = load i64, ptr %4, align 8, !tbaa !5
  %25 = sdiv i64 %23, %24
  store i64 %25, ptr %5, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #3
  %26 = load i64, ptr %4, align 8, !tbaa !5
  %27 = load i64, ptr %5, align 8, !tbaa !5
  %28 = call noundef i32 @_Z1fll(i64 noundef %26, i64 noundef %27)
  store i32 %28, ptr %6, align 4, !tbaa !9
  %29 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZSt3minIiERKT_S2_S2_(ptr noundef nonnull align 4 dereferenceable(4) %3, ptr noundef nonnull align 4 dereferenceable(4) %6)
  %30 = load i32, ptr %29, align 4, !tbaa !9
  store i32 %30, ptr %3, align 4, !tbaa !9
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #3
  br label %31

31:                                               ; preds = %22, %21
  %32 = load i64, ptr %4, align 8, !tbaa !5
  %33 = add nsw i64 %32, 1
  store i64 %33, ptr %4, align 8, !tbaa !5
  br label %9, !llvm.loop !11

34:                                               ; preds = %15
  %35 = load i32, ptr %3, align 4, !tbaa !9
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #3
  ret i32 %35
}

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZSt3minIiERKT_S2_S2_(ptr noundef nonnull align 4 dereferenceable(4), ptr noundef nonnull align 4 dereferenceable(4)) #2

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

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: mustprogress uwtable
declare dso_local noundef i32 @_Z1fll(i64 noundef, i64 noundef) local_unnamed_addr #1

; Function Attrs: mustprogress uwtable
define dso_local noundef i32 @_Z5solvel(i64 noundef %0) local_unnamed_addr #1 {
  %2 = alloca i32, align 4
  %3 = alloca i32, align 4
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %2) #3
  %4 = tail call noundef i32 @_Z1fll(i64 noundef 1, i64 noundef %0)
  store i32 %4, ptr %2, align 4, !tbaa !5
  %.not13 = icmp slt i64 %0, 4
  br i1 %.not13, label %._crit_edge, label %.lr.ph

._crit_edge:                                      ; preds = %13, %1
  %5 = phi i32 [ %4, %1 ], [ %14, %13 ]
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %2) #3
  ret i32 %5

.lr.ph:                                           ; preds = %1, %13
  %6 = phi i32 [ %14, %13 ], [ %4, %1 ]
  %.014 = phi i64 [ %15, %13 ], [ 2, %1 ]
  %7 = urem i64 %0, %.014
  %8 = udiv i64 %0, %.014
  %.not12 = icmp eq i64 %7, 0
  br i1 %.not12, label %9, label %13

9:                                                ; preds = %.lr.ph
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %3) #3
  %10 = call noundef i32 @_Z1fll(i64 noundef %.014, i64 noundef %8)
  store i32 %10, ptr %3, align 4, !tbaa !5
  %11 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZSt3minIiERKT_S2_S2_(ptr noundef nonnull align 4 dereferenceable(4) %2, ptr noundef nonnull align 4 dereferenceable(4) %3)
  %12 = load i32, ptr %11, align 4, !tbaa !5
  store i32 %12, ptr %2, align 4, !tbaa !5
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %3) #3
  br label %13

13:                                               ; preds = %.lr.ph, %9
  %14 = phi i32 [ %6, %.lr.ph ], [ %12, %9 ]
  %15 = add nuw nsw i64 %.014, 1
  %16 = mul nuw nsw i64 %15, %15
  %.not = icmp sgt i64 %16, %0
  br i1 %.not, label %._crit_edge, label %.lr.ph, !llvm.loop !9
}

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZSt3minIiERKT_S2_S2_(ptr noundef nonnull align 4 dereferenceable(4), ptr noundef nonnull align 4 dereferenceable(4)) local_unnamed_addr #2

attributes #0 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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" }
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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}


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