; LLVM IR from lzyrapx/Competitive-Programming :: LibreOJ/6083（数学）.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"

; Function Attrs: mustprogress uwtable
define dso_local noundef i64 @_Z4calcxxx(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
  %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 0, ptr %8, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %9) #3
  %11 = load i64, ptr %5, align 8, !tbaa !5
  store i64 %11, ptr %9, align 8, !tbaa !5
  br label %12

12:                                               ; preds = %36, %3
  %13 = load i64, ptr %9, align 8, !tbaa !5
  %14 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZSt3minIxERKT_S2_S2_(ptr noundef nonnull align 8 dereferenceable(8) %4, ptr noundef nonnull align 8 dereferenceable(8) %6)
  %15 = load i64, ptr %14, align 8, !tbaa !5
  %16 = icmp sle i64 %13, %15
  br i1 %16, label %18, label %17

17:                                               ; preds = %12
  call void @llvm.lifetime.end.p0(i64 8, ptr %9) #3
  br label %39

18:                                               ; preds = %12
  call void @llvm.lifetime.start.p0(i64 8, ptr %10) #3
  %19 = load i64, ptr %4, align 8, !tbaa !5
  %20 = load i64, ptr %4, align 8, !tbaa !5
  %21 = load i64, ptr %9, align 8, !tbaa !5
  %22 = sdiv i64 %20, %21
  %23 = sdiv i64 %19, %22
  store i64 %23, ptr %10, align 8, !tbaa !5
  %24 = 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) %6)
  %25 = load i64, ptr %24, align 8, !tbaa !5
  store i64 %25, ptr %8, align 8, !tbaa !5
  call void @llvm.lifetime.end.p0(i64 8, ptr %10) #3
  %26 = load i64, ptr %4, align 8, !tbaa !5
  %27 = load i64, ptr %9, align 8, !tbaa !5
  %28 = sdiv i64 %26, %27
  %29 = load i64, ptr %8, align 8, !tbaa !5
  %30 = load i64, ptr %9, align 8, !tbaa !5
  %31 = sub nsw i64 %29, %30
  %32 = add nsw i64 %31, 1
  %33 = mul nsw i64 %28, %32
  %34 = load i64, ptr %7, align 8, !tbaa !5
  %35 = add nsw i64 %34, %33
  store i64 %35, ptr %7, align 8, !tbaa !5
  br label %36

36:                                               ; preds = %18
  %37 = load i64, ptr %8, align 8, !tbaa !5
  %38 = add nsw i64 %37, 1
  store i64 %38, ptr %9, align 8, !tbaa !5
  br label %12, !llvm.loop !9

39:                                               ; preds = %17
  %40 = 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 %40
}

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #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: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1

attributes #0 = { 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 #1 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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 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
  %6 = alloca i64, align 8
  store i64 %0, ptr %4, align 8, !tbaa !5
  store i64 %2, 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) %4, ptr noundef nonnull align 8 dereferenceable(8) %5)
  %8 = load i64, ptr %7, align 8, !tbaa !5
  %.not10 = icmp slt i64 %8, %1
  br i1 %.not10, label %._crit_edge, label %.lr.ph

._crit_edge:                                      ; preds = %.lr.ph, %3
  %.09.lcssa = phi i64 [ 0, %3 ], [ %18, %.lr.ph ]
  ret i64 %.09.lcssa

.lr.ph:                                           ; preds = %3, %.lr.ph
  %.012 = phi i64 [ %19, %.lr.ph ], [ %1, %3 ]
  %.0911 = phi i64 [ %18, %.lr.ph ], [ 0, %3 ]
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %6) #3
  %9 = load i64, ptr %4, align 8, !tbaa !5
  %10 = sdiv i64 %9, %.012
  %11 = sdiv i64 %9, %10
  store i64 %11, ptr %6, align 8, !tbaa !5
  %12 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZSt3minIxERKT_S2_S2_(ptr noundef nonnull align 8 dereferenceable(8) %6, ptr noundef nonnull align 8 dereferenceable(8) %5)
  %13 = load i64, ptr %12, align 8, !tbaa !5
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %6) #3
  %14 = load i64, ptr %4, align 8, !tbaa !5
  %15 = sdiv i64 %14, %.012
  %reass.sub = sub i64 %13, %.012
  %16 = add i64 %reass.sub, 1
  %17 = mul nsw i64 %15, %16
  %18 = add nsw i64 %17, %.0911
  %19 = add nsw i64 %13, 1
  %20 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZSt3minIxERKT_S2_S2_(ptr noundef nonnull align 8 dereferenceable(8) %4, ptr noundef nonnull align 8 dereferenceable(8) %5)
  %21 = load i64, ptr %20, align 8, !tbaa !5
  %.not.not = icmp slt i64 %13, %21
  br i1 %.not.not, label %.lr.ph, label %._crit_edge, !llvm.loop !9
}

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #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 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 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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: EarlyCSEPass,GVNPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,ReassociatePass,SROAPass,SimplifyCFGPass