; LLVM IR from Rintarooo/VRPTW_ACO_Routing :: src/graph.ll (ZNK5Graph14is_all_visitedEv)

; 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.Graph = type { ptr, i32, i32, ptr, ptr, ptr }
%class.Node = type { i32, i32, i32, i32, i8, i32, i32, 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
define dso_local noundef zeroext i1 @_ZNK5Graph14is_all_visitedEv(ptr noundef nonnull align 8 dereferenceable(40) %0) #1 align 2 {
  %2 = alloca i1, align 1
  %3 = alloca ptr, align 8
  %4 = alloca i32, align 4
  %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 4, ptr %4) #2
  store i32 1, ptr %4, align 4, !tbaa !9
  br label %7

7:                                                ; preds = %24, %1
  %8 = load i32, ptr %4, align 4, !tbaa !9
  %9 = getelementptr inbounds %class.Graph, ptr %6, i32 0, i32 2
  %10 = load i32, ptr %9, align 4, !tbaa !11
  %11 = icmp slt i32 %8, %10
  br i1 %11, label %13, label %12

12:                                               ; preds = %7
  store i32 2, ptr %5, align 4
  br label %27

13:                                               ; preds = %7
  %14 = getelementptr inbounds %class.Graph, ptr %6, i32 0, i32 4
  %15 = load ptr, ptr %14, align 8, !tbaa !13
  %16 = load i32, ptr %4, align 4, !tbaa !9
  %17 = sext i32 %16 to i64
  %18 = getelementptr inbounds %class.Node, ptr %15, i64 %17
  %19 = getelementptr inbounds %class.Node, ptr %18, i32 0, i32 4
  %20 = load i8, ptr %19, align 4, !tbaa !14, !range !17, !noundef !18
  %21 = trunc i8 %20 to i1
  br i1 %21, label %23, label %22

22:                                               ; preds = %13
  store i1 false, ptr %2, align 1
  store i32 1, ptr %5, align 4
  br label %27

23:                                               ; preds = %13
  br label %24

24:                                               ; preds = %23
  %25 = load i32, ptr %4, align 4, !tbaa !9
  %26 = add nsw i32 %25, 1
  store i32 %26, ptr %4, align 4, !tbaa !9
  br label %7, !llvm.loop !19

27:                                               ; preds = %22, %12
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #2
  %28 = load i32, ptr %5, align 4
  switch i32 %28, label %32 [
    i32 2, label %29
    i32 1, label %30
  ]

29:                                               ; preds = %27
  store i1 true, ptr %2, align 1
  br label %30

30:                                               ; preds = %29, %27
  %31 = load i1, ptr %2, align 1
  ret i1 %31

32:                                               ; preds = %27
  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 = { 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 = !{!12, !10, i64 12}
!12 = !{!"_ZTS5Graph", !10, i64 8, !10, i64 12, !6, i64 16, !6, i64 24, !6, i64 32}
!13 = !{!12, !6, i64 24}
!14 = !{!15, !16, i64 16}
!15 = !{!"_ZTS4Node", !10, i64 0, !10, i64 4, !10, i64 8, !10, i64 12, !16, i64 16, !10, i64 20, !10, i64 24, !10, i64 28}
!16 = !{!"bool", !7, i64 0}
!17 = !{i8 0, i8 2}
!18 = !{}
!19 = distinct !{!19, !20}
!20 = !{!"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"

%class.Node = type { i32, i32, i32, i32, i8, i32, i32, i32 }

; Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(read, inaccessiblemem: none) uwtable
define dso_local noundef zeroext i1 @_ZNK5Graph14is_all_visitedEv(ptr nocapture noundef nonnull readonly align 8 dereferenceable(40) %0) local_unnamed_addr #0 align 2 {
  %2 = getelementptr inbounds i8, ptr %0, i64 12
  %3 = load i32, ptr %2, align 4, !tbaa !5
  %4 = icmp slt i32 %3, 2
  br i1 %4, label %._crit_edge, label %.lr.ph

.lr.ph:                                           ; preds = %1
  %5 = getelementptr inbounds i8, ptr %0, i64 24
  %6 = load ptr, ptr %5, align 8, !tbaa !11
  %7 = zext nneg i32 %3 to i64
  %wide.trip.count = zext nneg i32 %3 to i64
  %8 = getelementptr inbounds i8, ptr %6, i64 48
  %9 = load i8, ptr %8, align 4, !tbaa !12, !range !15, !noundef !16
  %10 = trunc nuw i8 %9 to i1
  br i1 %10, label %.lr.ph11, label %._crit_edge

.lr.ph11:                                         ; preds = %.lr.ph, %11
  %indvars.iv10 = phi i64 [ %indvars.iv.next, %11 ], [ 1, %.lr.ph ]
  %indvars.iv.next = add nuw nsw i64 %indvars.iv10, 1
  %exitcond = icmp eq i64 %indvars.iv.next, %wide.trip.count
  br i1 %exitcond, label %._crit_edge.loopexit, label %11, !llvm.loop !17

11:                                               ; preds = %.lr.ph11
  %12 = getelementptr inbounds %class.Node, ptr %6, i64 %indvars.iv.next, i32 4
  %13 = load i8, ptr %12, align 4, !tbaa !12, !range !15, !noundef !16
  %14 = trunc nuw i8 %13 to i1
  br i1 %14, label %.lr.ph11, label %._crit_edge.loopexit, !llvm.loop !17

._crit_edge.loopexit:                             ; preds = %.lr.ph11, %11
  %15 = icmp uge i64 %indvars.iv.next, %7
  br label %._crit_edge

._crit_edge:                                      ; preds = %._crit_edge.loopexit, %.lr.ph, %1
  %.lcssa = phi i1 [ true, %1 ], [ false, %.lr.ph ], [ %15, %._crit_edge.loopexit ]
  ret i1 %.lcssa
}

attributes #0 = { mustprogress nofree norecurse nosync nounwind willreturn memory(read, inaccessiblemem: none) 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" }

!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, !7, i64 12}
!6 = !{!"_ZTS5Graph", !7, i64 8, !7, i64 12, !10, i64 16, !10, i64 24, !10, i64 32}
!7 = !{!"int", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C++ TBAA"}
!10 = !{!"any pointer", !8, i64 0}
!11 = !{!6, !10, i64 24}
!12 = !{!13, !14, i64 16}
!13 = !{!"_ZTS4Node", !7, i64 0, !7, i64 4, !7, i64 8, !7, i64 12, !14, i64 16, !7, i64 20, !7, i64 24, !7, i64 28}
!14 = !{!"bool", !8, i64 0}
!15 = !{i8 0, i8 2}
!16 = !{}
!17 = distinct !{!17, !18}
!18 = !{!"llvm.loop.mustprogress"}


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