; LLVM IR from DionysiosB/CodeForces :: 0700-0799/782B-TheMeetingPlaceCannotBeChanged.ll (Z7getTimeRKSt6vectorIdSaIdEES3_d)

; 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 nounwind uwtable
define dso_local noundef double @_Z7getTimeRKSt6vectorIdSaIdEES3_d(ptr noundef nonnull align 8 dereferenceable(24) %0, ptr noundef nonnull align 8 dereferenceable(24) %1, double noundef %2) #0 {
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  %6 = alloca double, align 8
  %7 = alloca double, align 8
  %8 = alloca i64, align 8
  %9 = alloca double, align 8
  store ptr %0, ptr %4, align 8, !tbaa !5
  store ptr %1, ptr %5, align 8, !tbaa !5
  store double %2, ptr %6, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %7) #2
  store double 0.000000e+00, ptr %7, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %8) #2
  store i64 0, ptr %8, align 8, !tbaa !11
  br label %10

10:                                               ; preds = %43, %3
  %11 = load i64, ptr %8, align 8, !tbaa !11
  %12 = load ptr, ptr %4, align 8, !tbaa !5
  %13 = call noundef i64 @_ZNKSt6vectorIdSaIdEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) %12) #2
  %14 = icmp ult i64 %11, %13
  br i1 %14, label %16, label %15

15:                                               ; preds = %10
  call void @llvm.lifetime.end.p0(i64 8, ptr %8) #2
  br label %46

16:                                               ; preds = %10
  call void @llvm.lifetime.start.p0(i64 8, ptr %9) #2
  %17 = load double, ptr %6, align 8, !tbaa !9
  %18 = load ptr, ptr %4, align 8, !tbaa !5
  %19 = load i64, ptr %8, align 8, !tbaa !11
  %20 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNKSt6vectorIdSaIdEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %18, i64 noundef %19) #2
  %21 = load double, ptr %20, align 8, !tbaa !9
  %22 = fsub double %17, %21
  %23 = load ptr, ptr %5, align 8, !tbaa !5
  %24 = load i64, ptr %8, align 8, !tbaa !11
  %25 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNKSt6vectorIdSaIdEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %23, i64 noundef %24) #2
  %26 = load double, ptr %25, align 8, !tbaa !9
  %27 = fdiv double %22, %26
  store double %27, ptr %9, align 8, !tbaa !9
  %28 = load double, ptr %9, align 8, !tbaa !9
  %29 = fcmp olt double %28, 0.000000e+00
  br i1 %29, label %30, label %33

30:                                               ; preds = %16
  %31 = load double, ptr %9, align 8, !tbaa !9
  %32 = fneg double %31
  store double %32, ptr %9, align 8, !tbaa !9
  br label %33

33:                                               ; preds = %30, %16
  %34 = load double, ptr %7, align 8, !tbaa !9
  %35 = load double, ptr %9, align 8, !tbaa !9
  %36 = fcmp ogt double %34, %35
  br i1 %36, label %37, label %39

37:                                               ; preds = %33
  %38 = load double, ptr %7, align 8, !tbaa !9
  br label %41

39:                                               ; preds = %33
  %40 = load double, ptr %9, align 8, !tbaa !9
  br label %41

41:                                               ; preds = %39, %37
  %42 = phi double [ %38, %37 ], [ %40, %39 ]
  store double %42, ptr %7, align 8, !tbaa !9
  call void @llvm.lifetime.end.p0(i64 8, ptr %9) #2
  br label %43

43:                                               ; preds = %41
  %44 = load i64, ptr %8, align 8, !tbaa !11
  %45 = add nsw i64 %44, 1
  store i64 %45, ptr %8, align 8, !tbaa !11
  br label %10, !llvm.loop !13

46:                                               ; preds = %15
  %47 = load double, ptr %7, align 8, !tbaa !9
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #2
  ret double %47
}

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

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i64 @_ZNKSt6vectorIdSaIdEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24)) #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(8) ptr @_ZNKSt6vectorIdSaIdEEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) #0 align 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 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 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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 = !{!"any pointer", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"double", !7, i64 0}
!11 = !{!12, !12, i64 0}
!12 = !{!"long", !7, i64 0}
!13 = distinct !{!13, !14}
!14 = !{!"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 double @_Z7getTimeRKSt6vectorIdSaIdEES3_d(ptr noundef nonnull align 8 dereferenceable(24) %0, ptr noundef nonnull align 8 dereferenceable(24) %1, double noundef %2) local_unnamed_addr #0 {
  %4 = tail call noundef i64 @_ZNKSt6vectorIdSaIdEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) %0) #1
  %.not = icmp eq i64 %4, 0
  br i1 %.not, label %._crit_edge, label %.lr.ph

._crit_edge:                                      ; preds = %.lr.ph, %3
  %.015.lcssa = phi double [ 0.000000e+00, %3 ], [ %14, %.lr.ph ]
  ret double %.015.lcssa

.lr.ph:                                           ; preds = %3, %.lr.ph
  %.01418 = phi i64 [ %15, %.lr.ph ], [ 0, %3 ]
  %.01517 = phi double [ %14, %.lr.ph ], [ 0.000000e+00, %3 ]
  %5 = tail call noundef nonnull align 8 dereferenceable(8) ptr @_ZNKSt6vectorIdSaIdEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %0, i64 noundef %.01418) #1
  %6 = load double, ptr %5, align 8, !tbaa !5
  %7 = fsub double %2, %6
  %8 = tail call noundef nonnull align 8 dereferenceable(8) ptr @_ZNKSt6vectorIdSaIdEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %1, i64 noundef %.01418) #1
  %9 = load double, ptr %8, align 8, !tbaa !5
  %10 = fdiv double %7, %9
  %11 = fcmp olt double %10, 0.000000e+00
  %12 = fneg double %10
  %.0 = select i1 %11, double %12, double %10
  %13 = fcmp ogt double %.01517, %.0
  %14 = select i1 %13, double %.01517, double %.0
  %15 = add nuw nsw i64 %.01418, 1
  %16 = tail call noundef i64 @_ZNKSt6vectorIdSaIdEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) %0) #1
  %17 = icmp ult i64 %15, %16
  br i1 %17, label %.lr.ph, label %._crit_edge, !llvm.loop !9
}

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i64 @_ZNKSt6vectorIdSaIdEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24)) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(8) ptr @_ZNKSt6vectorIdSaIdEEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) local_unnamed_addr #0 align 2

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 = { 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 = !{!"double", !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,SROAPass,SimplifyCFGPass,TailCallElimPass