; LLVM IR from abeaumont/competitive-programming :: codechef/oct18a/bbricks.ll (Z1fxxx)

; 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 i64 @_Z8binomialxxx(i64 noundef, i64 noundef, i64 noundef) #1

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(8) ptr @_ZSt3minIxERKT_S2_S2_(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef nonnull align 8 dereferenceable(8)) #2

; Function Attrs: mustprogress uwtable
define dso_local noundef i64 @_Z1fxxx(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
  %10 = 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
  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 1, ptr %8, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %9) #3
  store i64 0, ptr %9, align 8, !tbaa !5
  br label %11

11:                                               ; preds = %48, %3
  %12 = load i64, ptr %9, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %10) #3
  %13 = load i64, ptr %4, align 8, !tbaa !5
  %14 = load i64, ptr %5, align 8, !tbaa !5
  %15 = sub nsw i64 %13, %14
  store i64 %15, ptr %10, align 8, !tbaa !5
  %16 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZSt3minIxERKT_S2_S2_(ptr noundef nonnull align 8 dereferenceable(8) %10, ptr noundef nonnull align 8 dereferenceable(8) %5)
  %17 = load i64, ptr %16, align 8, !tbaa !5
  %18 = icmp sle i64 %12, %17
  call void @llvm.lifetime.end.p0(i64 8, ptr %10) #3
  br i1 %18, label %20, label %19

19:                                               ; preds = %11
  call void @llvm.lifetime.end.p0(i64 8, ptr %9) #3
  br label %51

20:                                               ; preds = %11
  %21 = load i64, ptr %7, align 8, !tbaa !5
  %22 = load i64, ptr %5, align 8, !tbaa !5
  %23 = sub nsw i64 %22, 1
  %24 = load i64, ptr %9, align 8, !tbaa !5
  %25 = sub nsw i64 %24, 1
  %26 = load i64, ptr %6, align 8, !tbaa !5
  %27 = call noundef i64 @_Z8binomialxxx(i64 noundef %23, i64 noundef %25, i64 noundef %26)
  %28 = load i64, ptr %4, align 8, !tbaa !5
  %29 = load i64, ptr %5, align 8, !tbaa !5
  %30 = sub nsw i64 %28, %29
  %31 = load i64, ptr %9, align 8, !tbaa !5
  %32 = load i64, ptr %6, align 8, !tbaa !5
  %33 = call noundef i64 @_Z8binomialxxx(i64 noundef %30, i64 noundef %31, i64 noundef %32)
  %34 = mul nsw i64 %27, %33
  %35 = load i64, ptr %6, align 8, !tbaa !5
  %36 = srem i64 %34, %35
  %37 = load i64, ptr %8, align 8, !tbaa !5
  %38 = mul nsw i64 %36, %37
  %39 = load i64, ptr %6, align 8, !tbaa !5
  %40 = srem i64 %38, %39
  %41 = add nsw i64 %21, %40
  %42 = load i64, ptr %6, align 8, !tbaa !5
  %43 = srem i64 %41, %42
  store i64 %43, ptr %7, align 8, !tbaa !5
  %44 = load i64, ptr %8, align 8, !tbaa !5
  %45 = mul nsw i64 %44, 2
  %46 = load i64, ptr %6, align 8, !tbaa !5
  %47 = srem i64 %45, %46
  store i64 %47, ptr %8, align 8, !tbaa !5
  br label %48

48:                                               ; preds = %20
  %49 = load i64, ptr %9, align 8, !tbaa !5
  %50 = add nsw i64 %49, 1
  store i64 %50, ptr %9, align 8, !tbaa !5
  br label %11, !llvm.loop !9

51:                                               ; preds = %19
  %52 = load i64, ptr %7, align 8, !tbaa !5
  call void @llvm.lifetime.end.p0(i64 8, ptr %8) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #3
  ret i64 %52
}

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 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 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 i64 @_Z8binomialxxx(i64 noundef, i64 noundef, i64 noundef) local_unnamed_addr #1

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(8) ptr @_ZSt3minIxERKT_S2_S2_(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef nonnull align 8 dereferenceable(8)) local_unnamed_addr #2

; Function Attrs: mustprogress uwtable
define dso_local noundef i64 @_Z1fxxx(i64 noundef %0, i64 noundef %1, i64 noundef %2) local_unnamed_addr #1 {
  %4 = alloca i64, align 8
  %5 = alloca i64, align 8
  store i64 %1, ptr %4, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %5) #3
  %6 = sub nsw i64 %0, %1
  store i64 %6, ptr %5, align 8, !tbaa !5
  %7 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZSt3minIxERKT_S2_S2_(ptr noundef nonnull align 8 dereferenceable(8) %5, ptr noundef nonnull align 8 dereferenceable(8) %4)
  %8 = load i64, ptr %7, align 8, !tbaa !5
  %.not18 = icmp slt i64 %8, 0
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %5) #3
  br i1 %.not18, label %._crit_edge, label %.lr.ph

._crit_edge:                                      ; preds = %.lr.ph, %3
  %.017.lcssa = phi i64 [ 0, %3 ], [ %21, %.lr.ph ]
  ret i64 %.017.lcssa

.lr.ph:                                           ; preds = %3, %.lr.ph
  %.021 = phi i64 [ %24, %.lr.ph ], [ 0, %3 ]
  %.01620 = phi i64 [ %23, %.lr.ph ], [ 1, %3 ]
  %.01719 = phi i64 [ %21, %.lr.ph ], [ 0, %3 ]
  %9 = load i64, ptr %4, align 8, !tbaa !5
  %10 = add nsw i64 %9, -1
  %11 = add nsw i64 %.021, -1
  %12 = call noundef i64 @_Z8binomialxxx(i64 noundef %10, i64 noundef %11, i64 noundef %2)
  %13 = load i64, ptr %4, align 8, !tbaa !5
  %14 = sub nsw i64 %0, %13
  %15 = call noundef i64 @_Z8binomialxxx(i64 noundef %14, i64 noundef %.021, i64 noundef %2)
  %16 = mul nsw i64 %15, %12
  %17 = srem i64 %16, %2
  %18 = mul nsw i64 %17, %.01620
  %19 = srem i64 %18, %2
  %20 = add nsw i64 %19, %.01719
  %21 = srem i64 %20, %2
  %22 = shl nsw i64 %.01620, 1
  %23 = srem i64 %22, %2
  %24 = add nuw nsw i64 %.021, 1
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %5) #3
  %25 = load i64, ptr %4, align 8, !tbaa !5
  %26 = sub nsw i64 %0, %25
  store i64 %26, ptr %5, align 8, !tbaa !5
  %27 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZSt3minIxERKT_S2_S2_(ptr noundef nonnull align 8 dereferenceable(8) %5, ptr noundef nonnull align 8 dereferenceable(8) %4)
  %28 = load i64, ptr %27, align 8, !tbaa !5
  %.not.not = icmp slt i64 %.021, %28
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %5) #3
  br i1 %.not.not, label %.lr.ph, label %._crit_edge, !llvm.loop !9
}

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 = !{!"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: GVNPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,ReassociatePass,SROAPass,SimplifyCFGPass