; LLVM IR from turi-code/SFrame :: oss_src/graphlab/scheduler/priority_scheduler.ll (ZN8graphlab18priority_scheduler5emptyEv)

; 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"

%"class.graphlab::priority_scheduler" = type { %"class.graphlab::ischeduler", %"class.graphlab::dense_bitset", %"class.std::vector", %"class.std::vector.6", %"class.std::vector.11", i64, i64, double, i64 }
%"class.graphlab::ischeduler" = type { ptr }
%"class.graphlab::dense_bitset" = type { ptr, i64, i64 }
%"class.std::vector" = type { %"struct.std::_Vector_base" }
%"struct.std::_Vector_base" = type { %"struct.std::_Vector_base<graphlab::mutable_queue<unsigned long, double>, std::allocator<graphlab::mutable_queue<unsigned long, double>>>::_Vector_impl" }
%"struct.std::_Vector_base<graphlab::mutable_queue<unsigned long, double>, std::allocator<graphlab::mutable_queue<unsigned long, double>>>::_Vector_impl" = type { %"struct.std::_Vector_base<graphlab::mutable_queue<unsigned long, double>, std::allocator<graphlab::mutable_queue<unsigned long, double>>>::_Vector_impl_data" }
%"struct.std::_Vector_base<graphlab::mutable_queue<unsigned long, double>, std::allocator<graphlab::mutable_queue<unsigned long, double>>>::_Vector_impl_data" = type { ptr, ptr, ptr }
%"class.std::vector.6" = type { %"struct.std::_Vector_base.7" }
%"struct.std::_Vector_base.7" = type { %"struct.std::_Vector_base<graphlab::padded_simple_spinlock, std::allocator<graphlab::padded_simple_spinlock>>::_Vector_impl" }
%"struct.std::_Vector_base<graphlab::padded_simple_spinlock, std::allocator<graphlab::padded_simple_spinlock>>::_Vector_impl" = type { %"struct.std::_Vector_base<graphlab::padded_simple_spinlock, std::allocator<graphlab::padded_simple_spinlock>>::_Vector_impl_data" }
%"struct.std::_Vector_base<graphlab::padded_simple_spinlock, std::allocator<graphlab::padded_simple_spinlock>>::_Vector_impl_data" = type { ptr, ptr, ptr }
%"class.std::vector.11" = type { %"struct.std::_Vector_base.12" }
%"struct.std::_Vector_base.12" = type { %"struct.std::_Vector_base<unsigned long, std::allocator<unsigned long>>::_Vector_impl" }
%"struct.std::_Vector_base<unsigned long, std::allocator<unsigned long>>::_Vector_impl" = type { %"struct.std::_Vector_base<unsigned long, std::allocator<unsigned long>>::_Vector_impl_data" }
%"struct.std::_Vector_base<unsigned long, std::allocator<unsigned long>>::_Vector_impl_data" = type { ptr, ptr, ptr }
%"struct.std::pair" = type { i64, double }

; 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
declare dso_local noundef i64 @_ZNKSt6vectorIN8graphlab13mutable_queueImdEESaIS2_EE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24)) #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(72) ptr @_ZNSt6vectorIN8graphlab13mutable_queueImdEESaIS2_EEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef zeroext i1 @_ZNK8graphlab13mutable_queueImdE5emptyEv(ptr noundef nonnull align 8 dereferenceable(72)) #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(16) ptr @_ZNK8graphlab13mutable_queueImdE3topEv(ptr noundef nonnull align 8 dereferenceable(72)) #1 align 2

; Function Attrs: mustprogress uwtable
define dso_local noundef zeroext i1 @_ZN8graphlab18priority_scheduler5emptyEv(ptr noundef nonnull align 8 dereferenceable(136) %0) unnamed_addr #2 align 2 {
  %2 = alloca i1, align 1
  %3 = alloca ptr, align 8
  %4 = alloca i64, align 8
  %5 = alloca i32, align 4
  store ptr %0, ptr %3, align 8, !tbaa !5
  %6 = load ptr, ptr %3, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr %4) #3
  store i64 0, ptr %4, align 8, !tbaa !9
  br label %7

7:                                                ; preds = %30, %1
  %8 = load i64, ptr %4, align 8, !tbaa !9
  %9 = getelementptr inbounds %"class.graphlab::priority_scheduler", ptr %6, i32 0, i32 2
  %10 = call noundef i64 @_ZNKSt6vectorIN8graphlab13mutable_queueImdEESaIS2_EE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) %9) #3
  %11 = icmp ult i64 %8, %10
  br i1 %11, label %13, label %12

12:                                               ; preds = %7
  store i32 2, ptr %5, align 4
  br label %33

13:                                               ; preds = %7
  %14 = getelementptr inbounds %"class.graphlab::priority_scheduler", ptr %6, i32 0, i32 2
  %15 = load i64, ptr %4, align 8, !tbaa !9
  %16 = call noundef nonnull align 8 dereferenceable(72) ptr @_ZNSt6vectorIN8graphlab13mutable_queueImdEESaIS2_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %14, i64 noundef %15) #3
  %17 = call noundef zeroext i1 @_ZNK8graphlab13mutable_queueImdE5emptyEv(ptr noundef nonnull align 8 dereferenceable(72) %16)
  br i1 %17, label %29, label %18

18:                                               ; preds = %13
  %19 = getelementptr inbounds %"class.graphlab::priority_scheduler", ptr %6, i32 0, i32 2
  %20 = load i64, ptr %4, align 8, !tbaa !9
  %21 = call noundef nonnull align 8 dereferenceable(72) ptr @_ZNSt6vectorIN8graphlab13mutable_queueImdEESaIS2_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %19, i64 noundef %20) #3
  %22 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNK8graphlab13mutable_queueImdE3topEv(ptr noundef nonnull align 8 dereferenceable(72) %21)
  %23 = getelementptr inbounds %"struct.std::pair", ptr %22, i32 0, i32 1
  %24 = load double, ptr %23, align 8, !tbaa !11
  %25 = getelementptr inbounds %"class.graphlab::priority_scheduler", ptr %6, i32 0, i32 7
  %26 = load double, ptr %25, align 8, !tbaa !14
  %27 = fcmp oge double %24, %26
  br i1 %27, label %28, label %29

28:                                               ; preds = %18
  store i1 false, ptr %2, align 1
  store i32 1, ptr %5, align 4
  br label %33

29:                                               ; preds = %18, %13
  br label %30

30:                                               ; preds = %29
  %31 = load i64, ptr %4, align 8, !tbaa !9
  %32 = add i64 %31, 1
  store i64 %32, ptr %4, align 8, !tbaa !9
  br label %7, !llvm.loop !30

33:                                               ; preds = %28, %12
  call void @llvm.lifetime.end.p0(i64 8, ptr %4) #3
  %34 = load i32, ptr %5, align 4
  switch i32 %34, label %38 [
    i32 2, label %35
    i32 1, label %36
  ]

35:                                               ; preds = %33
  store i1 true, ptr %2, align 1
  br label %36

36:                                               ; preds = %35, %33
  %37 = load i1, ptr %2, align 1
  ret i1 %37

38:                                               ; preds = %33
  unreachable
}

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 = { 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 #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 = !{!"any pointer", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"long", !7, i64 0}
!11 = !{!12, !13, i64 8}
!12 = !{!"_ZTSSt4pairImdE", !10, i64 0, !13, i64 8}
!13 = !{!"double", !7, i64 0}
!14 = !{!15, !13, i64 120}
!15 = !{!"_ZTSN8graphlab18priority_schedulerE", !16, i64 0, !17, i64 8, !18, i64 32, !22, i64 56, !26, i64 80, !10, i64 104, !10, i64 112, !13, i64 120, !10, i64 128}
!16 = !{!"_ZTSN8graphlab10ischedulerE"}
!17 = !{!"_ZTSN8graphlab12dense_bitsetE", !6, i64 0, !10, i64 8, !10, i64 16}
!18 = !{!"_ZTSSt6vectorIN8graphlab13mutable_queueImdEESaIS2_EE", !19, i64 0}
!19 = !{!"_ZTSSt12_Vector_baseIN8graphlab13mutable_queueImdEESaIS2_EE", !20, i64 0}
!20 = !{!"_ZTSNSt12_Vector_baseIN8graphlab13mutable_queueImdEESaIS2_EE12_Vector_implE", !21, i64 0}
!21 = !{!"_ZTSNSt12_Vector_baseIN8graphlab13mutable_queueImdEESaIS2_EE17_Vector_impl_dataE", !6, i64 0, !6, i64 8, !6, i64 16}
!22 = !{!"_ZTSSt6vectorIN8graphlab22padded_simple_spinlockESaIS1_EE", !23, i64 0}
!23 = !{!"_ZTSSt12_Vector_baseIN8graphlab22padded_simple_spinlockESaIS1_EE", !24, i64 0}
!24 = !{!"_ZTSNSt12_Vector_baseIN8graphlab22padded_simple_spinlockESaIS1_EE12_Vector_implE", !25, i64 0}
!25 = !{!"_ZTSNSt12_Vector_baseIN8graphlab22padded_simple_spinlockESaIS1_EE17_Vector_impl_dataE", !6, i64 0, !6, i64 8, !6, i64 16}
!26 = !{!"_ZTSSt6vectorImSaImEE", !27, i64 0}
!27 = !{!"_ZTSSt12_Vector_baseImSaImEE", !28, i64 0}
!28 = !{!"_ZTSNSt12_Vector_baseImSaImEE12_Vector_implE", !29, i64 0}
!29 = !{!"_ZTSNSt12_Vector_baseImSaImEE17_Vector_impl_dataE", !6, i64 0, !6, i64 8, !6, i64 16}
!30 = distinct !{!30, !31}
!31 = !{!"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
declare dso_local noundef i64 @_ZNKSt6vectorIN8graphlab13mutable_queueImdEESaIS2_EE4sizeEv(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(72) ptr @_ZNSt6vectorIN8graphlab13mutable_queueImdEESaIS2_EEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef zeroext i1 @_ZNK8graphlab13mutable_queueImdE5emptyEv(ptr noundef nonnull align 8 dereferenceable(72)) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(16) ptr @_ZNK8graphlab13mutable_queueImdE3topEv(ptr noundef nonnull align 8 dereferenceable(72)) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress nounwind uwtable
define dso_local noundef zeroext i1 @_ZN8graphlab18priority_scheduler5emptyEv(ptr noundef nonnull align 8 dereferenceable(136) %0) unnamed_addr #0 align 2 {
  %2 = getelementptr inbounds i8, ptr %0, i64 32
  %3 = tail call noundef i64 @_ZNKSt6vectorIN8graphlab13mutable_queueImdEESaIS2_EE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) %2) #1
  %4 = icmp eq i64 %3, 0
  br i1 %4, label %._crit_edge, label %.lr.ph

.lr.ph:                                           ; preds = %1
  %5 = getelementptr inbounds i8, ptr %0, i64 120
  br label %6

6:                                                ; preds = %.lr.ph, %16
  %.068 = phi i64 [ 0, %.lr.ph ], [ %17, %16 ]
  %7 = tail call noundef nonnull align 8 dereferenceable(72) ptr @_ZNSt6vectorIN8graphlab13mutable_queueImdEESaIS2_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %2, i64 noundef %.068) #1
  %8 = tail call noundef zeroext i1 @_ZNK8graphlab13mutable_queueImdE5emptyEv(ptr noundef nonnull align 8 dereferenceable(72) %7)
  br i1 %8, label %16, label %9

9:                                                ; preds = %6
  %10 = tail call noundef nonnull align 8 dereferenceable(72) ptr @_ZNSt6vectorIN8graphlab13mutable_queueImdEESaIS2_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %2, i64 noundef %.068) #1
  %11 = tail call noundef nonnull align 8 dereferenceable(16) ptr @_ZNK8graphlab13mutable_queueImdE3topEv(ptr noundef nonnull align 8 dereferenceable(72) %10)
  %12 = getelementptr inbounds i8, ptr %11, i64 8
  %13 = load double, ptr %12, align 8, !tbaa !5
  %14 = load double, ptr %5, align 8, !tbaa !11
  %15 = fcmp ult double %13, %14
  br i1 %15, label %16, label %._crit_edge

16:                                               ; preds = %6, %9
  %17 = add nuw i64 %.068, 1
  %18 = tail call noundef i64 @_ZNKSt6vectorIN8graphlab13mutable_queueImdEESaIS2_EE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) %2) #1
  %.not = icmp ult i64 %17, %18
  br i1 %.not, label %6, label %._crit_edge, !llvm.loop !28

._crit_edge:                                      ; preds = %16, %9, %1
  %.lcssa = phi i1 [ true, %1 ], [ false, %9 ], [ true, %16 ]
  ret i1 %.lcssa
}

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, !10, i64 8}
!6 = !{!"_ZTSSt4pairImdE", !7, i64 0, !10, i64 8}
!7 = !{!"long", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C++ TBAA"}
!10 = !{!"double", !8, i64 0}
!11 = !{!12, !10, i64 120}
!12 = !{!"_ZTSN8graphlab18priority_schedulerE", !13, i64 0, !14, i64 8, !16, i64 32, !20, i64 56, !24, i64 80, !7, i64 104, !7, i64 112, !10, i64 120, !7, i64 128}
!13 = !{!"_ZTSN8graphlab10ischedulerE"}
!14 = !{!"_ZTSN8graphlab12dense_bitsetE", !15, i64 0, !7, i64 8, !7, i64 16}
!15 = !{!"any pointer", !8, i64 0}
!16 = !{!"_ZTSSt6vectorIN8graphlab13mutable_queueImdEESaIS2_EE", !17, i64 0}
!17 = !{!"_ZTSSt12_Vector_baseIN8graphlab13mutable_queueImdEESaIS2_EE", !18, i64 0}
!18 = !{!"_ZTSNSt12_Vector_baseIN8graphlab13mutable_queueImdEESaIS2_EE12_Vector_implE", !19, i64 0}
!19 = !{!"_ZTSNSt12_Vector_baseIN8graphlab13mutable_queueImdEESaIS2_EE17_Vector_impl_dataE", !15, i64 0, !15, i64 8, !15, i64 16}
!20 = !{!"_ZTSSt6vectorIN8graphlab22padded_simple_spinlockESaIS1_EE", !21, i64 0}
!21 = !{!"_ZTSSt12_Vector_baseIN8graphlab22padded_simple_spinlockESaIS1_EE", !22, i64 0}
!22 = !{!"_ZTSNSt12_Vector_baseIN8graphlab22padded_simple_spinlockESaIS1_EE12_Vector_implE", !23, i64 0}
!23 = !{!"_ZTSNSt12_Vector_baseIN8graphlab22padded_simple_spinlockESaIS1_EE17_Vector_impl_dataE", !15, i64 0, !15, i64 8, !15, i64 16}
!24 = !{!"_ZTSSt6vectorImSaImEE", !25, i64 0}
!25 = !{!"_ZTSSt12_Vector_baseImSaImEE", !26, i64 0}
!26 = !{!"_ZTSNSt12_Vector_baseImSaImEE12_Vector_implE", !27, i64 0}
!27 = !{!"_ZTSNSt12_Vector_baseImSaImEE17_Vector_impl_dataE", !15, i64 0, !15, i64 8, !15, i64 16}
!28 = distinct !{!28, !29}
!29 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: CorrelatedValuePropagationPass,EarlyCSEPass,GVNPass,GlobalOptPass,IPSCCPPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LCSSAPass,LICMPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass