; LLVM IR from ERGO-Code/HiGHS :: src/mip (HighsCliqueTable)

; 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"

%"struct.HighsCliqueTable::CliqueVar" = type { i32 }

; 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 nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) #1 align 2

; Function Attrs: nocallback nofree nounwind willreturn memory(argmem: readwrite)
declare void @llvm.memcpy.p0.p0.i64(ptr noalias nocapture writeonly, ptr noalias nocapture readonly, i64, i1 immarg) #2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNK16HighsCliqueTable18queryNeighbourhoodERSt6vectorIiSaIiEERlNS_9CliqueVarEPS5_i(ptr noundef nonnull align 8 dereferenceable(488), ptr noundef nonnull align 8 dereferenceable(24), ptr noundef nonnull align 8 dereferenceable(8), i32, ptr noundef, i32 noundef) #3 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i64 @_ZNKSt6vectorIiSaIiEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24)) #1 align 2

; Function Attrs: mustprogress uwtable
define dso_local noundef i32 @_ZN16HighsCliqueTable21shrinkToNeighbourhoodERSt6vectorIiSaIiEERlNS_9CliqueVarEPS5_i(ptr noundef nonnull align 8 dereferenceable(488) %0, ptr noundef nonnull align 8 dereferenceable(24) %1, ptr noundef nonnull align 8 dereferenceable(8) %2, i32 %3, ptr noundef %4, i32 noundef %5) #3 align 2 {
  %7 = alloca %"struct.HighsCliqueTable::CliqueVar", align 4
  %8 = alloca ptr, align 8
  %9 = alloca ptr, align 8
  %10 = alloca ptr, align 8
  %11 = alloca ptr, align 8
  %12 = alloca i32, align 4
  %13 = alloca %"struct.HighsCliqueTable::CliqueVar", align 4
  %14 = alloca i32, align 4
  %15 = getelementptr inbounds %"struct.HighsCliqueTable::CliqueVar", ptr %7, i32 0, i32 0
  store i32 %3, ptr %15, align 4
  store ptr %0, ptr %8, align 8, !tbaa !5
  store ptr %1, ptr %9, align 8, !tbaa !5
  store ptr %2, ptr %10, align 8, !tbaa !5
  store ptr %4, ptr %11, align 8, !tbaa !5
  store i32 %5, ptr %12, align 4, !tbaa !9
  %16 = load ptr, ptr %8, align 8
  %17 = load ptr, ptr %9, align 8, !tbaa !5
  %18 = load ptr, ptr %10, align 8, !tbaa !5
  call void @llvm.memcpy.p0.p0.i64(ptr align 4 %13, ptr align 4 %7, i64 4, i1 false), !tbaa.struct !11
  %19 = load ptr, ptr %11, align 8, !tbaa !5
  %20 = load i32, ptr %12, align 4, !tbaa !9
  %21 = getelementptr inbounds %"struct.HighsCliqueTable::CliqueVar", ptr %13, i32 0, i32 0
  %22 = load i32, ptr %21, align 4
  call void @_ZNK16HighsCliqueTable18queryNeighbourhoodERSt6vectorIiSaIiEERlNS_9CliqueVarEPS5_i(ptr noundef nonnull align 8 dereferenceable(488) %16, ptr noundef nonnull align 8 dereferenceable(24) %17, ptr noundef nonnull align 8 dereferenceable(8) %18, i32 %22, ptr noundef %19, i32 noundef %20)
  call void @llvm.lifetime.start.p0(i64 4, ptr %14) #4
  store i32 0, ptr %14, align 4, !tbaa !9
  br label %23

23:                                               ; preds = %43, %6
  %24 = load i32, ptr %14, align 4, !tbaa !9
  %25 = load ptr, ptr %9, align 8, !tbaa !5
  %26 = call noundef i64 @_ZNKSt6vectorIiSaIiEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) %25) #4
  %27 = trunc i64 %26 to i32
  %28 = icmp slt i32 %24, %27
  br i1 %28, label %30, label %29

29:                                               ; preds = %23
  call void @llvm.lifetime.end.p0(i64 4, ptr %14) #4
  br label %46

30:                                               ; preds = %23
  %31 = load ptr, ptr %11, align 8, !tbaa !5
  %32 = load ptr, ptr %9, align 8, !tbaa !5
  %33 = load i32, ptr %14, align 4, !tbaa !9
  %34 = sext i32 %33 to i64
  %35 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %32, i64 noundef %34) #4
  %36 = load i32, ptr %35, align 4, !tbaa !9
  %37 = sext i32 %36 to i64
  %38 = getelementptr inbounds %"struct.HighsCliqueTable::CliqueVar", ptr %31, i64 %37
  %39 = load ptr, ptr %11, align 8, !tbaa !5
  %40 = load i32, ptr %14, align 4, !tbaa !9
  %41 = sext i32 %40 to i64
  %42 = getelementptr inbounds %"struct.HighsCliqueTable::CliqueVar", ptr %39, i64 %41
  call void @llvm.memcpy.p0.p0.i64(ptr align 4 %42, ptr align 4 %38, i64 4, i1 false), !tbaa.struct !11
  br label %43

43:                                               ; preds = %30
  %44 = load i32, ptr %14, align 4, !tbaa !9
  %45 = add nsw i32 %44, 1
  store i32 %45, ptr %14, align 4, !tbaa !9
  br label %23, !llvm.loop !13

46:                                               ; preds = %29
  %47 = load ptr, ptr %9, align 8, !tbaa !5
  %48 = call noundef i64 @_ZNKSt6vectorIiSaIiEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) %47) #4
  %49 = trunc i64 %48 to i32
  ret i32 %49
}

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 = { nocallback nofree nounwind willreturn memory(argmem: readwrite) }
attributes #3 = { 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 #4 = { 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 = !{!"int", !7, i64 0}
!11 = !{i64 0, i64 4, !12}
!12 = !{!7, !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"

%"struct.HighsCliqueTable::CliqueVar" = type { i32 }

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNK16HighsCliqueTable18queryNeighbourhoodERSt6vectorIiSaIiEERlNS_9CliqueVarEPS5_i(ptr noundef nonnull align 8 dereferenceable(488), ptr noundef nonnull align 8 dereferenceable(24), ptr noundef nonnull align 8 dereferenceable(8), i32, ptr noundef, i32 noundef) local_unnamed_addr #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i64 @_ZNKSt6vectorIiSaIiEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24)) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress uwtable
define dso_local noundef i32 @_ZN16HighsCliqueTable21shrinkToNeighbourhoodERSt6vectorIiSaIiEERlNS_9CliqueVarEPS5_i(ptr noundef nonnull align 8 dereferenceable(488) %0, ptr noundef nonnull align 8 dereferenceable(24) %1, ptr noundef nonnull align 8 dereferenceable(8) %2, i32 %3, ptr noundef %4, i32 noundef %5) local_unnamed_addr #1 align 2 {
  tail call void @_ZNK16HighsCliqueTable18queryNeighbourhoodERSt6vectorIiSaIiEERlNS_9CliqueVarEPS5_i(ptr noundef nonnull align 8 dereferenceable(488) %0, ptr noundef nonnull align 8 dereferenceable(24) %1, ptr noundef nonnull align 8 dereferenceable(8) %2, i32 %3, ptr noundef %4, i32 noundef %5)
  %7 = tail call noundef i64 @_ZNKSt6vectorIiSaIiEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) %1) #2
  %8 = trunc i64 %7 to i32
  %9 = icmp sgt i32 %8, 0
  br i1 %9, label %.lr.ph, label %._crit_edge

._crit_edge:                                      ; preds = %.lr.ph, %6
  %10 = tail call noundef i64 @_ZNKSt6vectorIiSaIiEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) %1) #2
  %11 = trunc i64 %10 to i32
  ret i32 %11

.lr.ph:                                           ; preds = %6, %.lr.ph
  %indvars.iv = phi i64 [ %indvars.iv.next, %.lr.ph ], [ 0, %6 ]
  %12 = tail call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %1, i64 noundef %indvars.iv) #2
  %13 = load i32, ptr %12, align 4, !tbaa !5
  %14 = sext i32 %13 to i64
  %15 = getelementptr inbounds %"struct.HighsCliqueTable::CliqueVar", ptr %4, i64 %14
  %16 = getelementptr inbounds %"struct.HighsCliqueTable::CliqueVar", ptr %4, i64 %indvars.iv
  %17 = load i32, ptr %15, align 4, !tbaa !9
  store i32 %17, ptr %16, align 4, !tbaa !9
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %18 = tail call noundef i64 @_ZNKSt6vectorIiSaIiEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) %1) #2
  %sext = shl i64 %18, 32
  %19 = ashr exact i64 %sext, 32
  %20 = icmp slt i64 %indvars.iv.next, %19
  br i1 %20, label %.lr.ph, label %._crit_edge, !llvm.loop !10
}

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 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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = !{!7, !7, i64 0}
!10 = distinct !{!10, !11}
!11 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: EarlyCSEPass,GlobalOptPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,SROAPass,SimplifyCFGPass,TailCallElimPass