; LLVM IR from kmilo17pet/QuarkTS-cpp :: src/prioqueue.ll (ZN3qOS9prioQueue7cleanUpERKNS_4taskE)

; 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.qOS::prioQueue" = type { ptr, i32, ptr, ptr, i64 }
%"struct.qOS::pq::queueStack_t" = type { ptr, ptr }

; 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 void @_ZN3qOS9prioQueue10clearIndexEm(ptr noundef nonnull align 8 dereferenceable(40), i64 noundef) #1 align 2

; Function Attrs: mustprogress nounwind uwtable
define dso_local void @_ZN3qOS9prioQueue7cleanUpERKNS_4taskE(ptr noundef nonnull align 8 dereferenceable(40) %0, ptr noundef nonnull align 8 dereferenceable(150) %1) #1 align 2 {
  %3 = alloca ptr, align 8
  %4 = alloca ptr, align 8
  %5 = alloca i64, align 8
  store ptr %0, ptr %3, align 8, !tbaa !5
  store ptr %1, ptr %4, align 8, !tbaa !5
  %6 = load ptr, ptr %3, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr %5) #2
  store i64 1, ptr %5, align 8, !tbaa !9
  br label %7

7:                                                ; preds = %25, %2
  %8 = load i64, ptr %5, align 8, !tbaa !9
  %9 = getelementptr inbounds %"class.qOS::prioQueue", ptr %6, i32 0, i32 4
  %10 = load i64, ptr %9, align 8, !tbaa !11
  %11 = icmp ult i64 %8, %10
  br i1 %11, label %13, label %12

12:                                               ; preds = %7
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #2
  br label %28

13:                                               ; preds = %7
  %14 = getelementptr inbounds %"class.qOS::prioQueue", ptr %6, i32 0, i32 3
  %15 = load ptr, ptr %14, align 8, !tbaa !14
  %16 = load i64, ptr %5, align 8, !tbaa !9
  %17 = getelementptr inbounds %"struct.qOS::pq::queueStack_t", ptr %15, i64 %16
  %18 = getelementptr inbounds %"struct.qOS::pq::queueStack_t", ptr %17, i32 0, i32 0
  %19 = load ptr, ptr %18, align 8, !tbaa !15
  %20 = load ptr, ptr %4, align 8, !tbaa !5
  %21 = icmp eq ptr %19, %20
  br i1 %21, label %22, label %24

22:                                               ; preds = %13
  %23 = load i64, ptr %5, align 8, !tbaa !9
  call void @_ZN3qOS9prioQueue10clearIndexEm(ptr noundef nonnull align 8 dereferenceable(40) %6, i64 noundef %23) #2
  br label %24

24:                                               ; preds = %22, %13
  br label %25

25:                                               ; preds = %24
  %26 = load i64, ptr %5, align 8, !tbaa !9
  %27 = add i64 %26, 1
  store i64 %27, ptr %5, align 8, !tbaa !9
  br label %7, !llvm.loop !17

28:                                               ; preds = %12
  ret void
}

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 = { 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, !10, i64 32}
!12 = !{!"_ZTSN3qOS9prioQueueE", !13, i64 8, !6, i64 16, !6, i64 24, !10, i64 32}
!13 = !{!"int", !7, i64 0}
!14 = !{!12, !6, i64 24}
!15 = !{!16, !6, i64 0}
!16 = !{!"_ZTSN3qOS2pq12queueStack_tE", !6, i64 0, !6, i64 8}
!17 = distinct !{!17, !18}
!18 = !{!"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"

%"struct.qOS::pq::queueStack_t" = type { ptr, ptr }

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZN3qOS9prioQueue10clearIndexEm(ptr noundef nonnull align 8 dereferenceable(40), i64 noundef) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress nounwind uwtable
define dso_local void @_ZN3qOS9prioQueue7cleanUpERKNS_4taskE(ptr noundef nonnull align 8 dereferenceable(40) %0, ptr noundef nonnull readnone align 8 dereferenceable(150) %1) local_unnamed_addr #0 align 2 {
  %3 = getelementptr inbounds i8, ptr %0, i64 32
  %4 = load i64, ptr %3, align 8, !tbaa !5
  %5 = icmp ugt i64 %4, 1
  br i1 %5, label %.lr.ph, label %._crit_edge

.lr.ph:                                           ; preds = %2
  %6 = getelementptr inbounds i8, ptr %0, i64 24
  br label %7

._crit_edge:                                      ; preds = %14, %2
  ret void

7:                                                ; preds = %.lr.ph, %14
  %8 = phi i64 [ %4, %.lr.ph ], [ %15, %14 ]
  %.05 = phi i64 [ 1, %.lr.ph ], [ %16, %14 ]
  %9 = load ptr, ptr %6, align 8, !tbaa !12
  %10 = getelementptr inbounds %"struct.qOS::pq::queueStack_t", ptr %9, i64 %.05
  %11 = load ptr, ptr %10, align 8, !tbaa !13
  %12 = icmp eq ptr %11, %1
  br i1 %12, label %13, label %14

13:                                               ; preds = %7
  tail call void @_ZN3qOS9prioQueue10clearIndexEm(ptr noundef nonnull align 8 dereferenceable(40) %0, i64 noundef %.05) #1
  %.pre = load i64, ptr %3, align 8, !tbaa !5
  br label %14

14:                                               ; preds = %7, %13
  %15 = phi i64 [ %8, %7 ], [ %.pre, %13 ]
  %16 = add nuw i64 %.05, 1
  %17 = icmp ult i64 %16, %15
  br i1 %17, label %7, label %._crit_edge, !llvm.loop !15
}

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, !11, i64 32}
!6 = !{!"_ZTSN3qOS9prioQueueE", !7, i64 8, !10, i64 16, !10, i64 24, !11, i64 32}
!7 = !{!"int", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C++ TBAA"}
!10 = !{!"any pointer", !8, i64 0}
!11 = !{!"long", !8, i64 0}
!12 = !{!6, !10, i64 24}
!13 = !{!14, !10, i64 0}
!14 = !{!"_ZTSN3qOS2pq12queueStack_tE", !10, i64 0, !10, i64 8}
!15 = distinct !{!15, !16}
!16 = !{!"llvm.loop.mustprogress"}


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