; LLVM IR from TheAlgorithms/C-Plus-Plus :: greedy_algorithms (dijkstra_greedy)

; 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.std::_Bit_reference" = type { ptr, i64 }

; Function Attrs: mustprogress uwtable
define dso_local noundef i32 @_ZN17greedy_algorithms8dijkstra16minimum_distanceESt6vectorIiSaIiEES1_IbSaIbEEi(ptr noundef %0, ptr noundef %1, i32 noundef %2) #0 {
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  %6 = alloca i32, align 4
  %7 = alloca i32, align 4
  %8 = alloca i32, align 4
  %9 = alloca i32, align 4
  %10 = alloca %"struct.std::_Bit_reference", align 8
  store ptr %0, ptr %4, align 8, !tbaa !5
  store ptr %1, ptr %5, align 8, !tbaa !5
  store i32 %2, ptr %6, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #3
  store i32 2147483647, ptr %7, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #3
  store i32 0, ptr %8, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %9) #3
  store i32 0, ptr %9, align 4, !tbaa !9
  br label %11

11:                                               ; preds = %41, %3
  %12 = load i32, ptr %9, align 4, !tbaa !9
  %13 = load i32, ptr %6, align 4, !tbaa !9
  %14 = icmp slt i32 %12, %13
  br i1 %14, label %16, label %15

15:                                               ; preds = %11
  call void @llvm.lifetime.end.p0(i64 4, ptr %9) #3
  br label %44

16:                                               ; preds = %11
  call void @llvm.lifetime.start.p0(i64 16, ptr %10) #3
  %17 = load i32, ptr %9, align 4, !tbaa !9
  %18 = sext i32 %17 to i64
  %19 = call { ptr, i64 } @_ZNSt6vectorIbSaIbEEixEm(ptr noundef nonnull align 8 dereferenceable(40) %1, i64 noundef %18)
  %20 = getelementptr inbounds { ptr, i64 }, ptr %10, i32 0, i32 0
  %21 = extractvalue { ptr, i64 } %19, 0
  store ptr %21, ptr %20, align 8
  %22 = getelementptr inbounds { ptr, i64 }, ptr %10, i32 0, i32 1
  %23 = extractvalue { ptr, i64 } %19, 1
  store i64 %23, ptr %22, align 8
  %24 = call noundef zeroext i1 @_ZNKSt14_Bit_referencecvbEv(ptr noundef nonnull align 8 dereferenceable(16) %10) #3
  br i1 %24, label %32, label %25

25:                                               ; preds = %16
  %26 = load i32, ptr %9, align 4, !tbaa !9
  %27 = sext i32 %26 to i64
  %28 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %0, i64 noundef %27) #3
  %29 = load i32, ptr %28, align 4, !tbaa !9
  %30 = load i32, ptr %7, align 4, !tbaa !9
  %31 = icmp slt i32 %29, %30
  br label %32

32:                                               ; preds = %25, %16
  %33 = phi i1 [ false, %16 ], [ %31, %25 ]
  call void @llvm.lifetime.end.p0(i64 16, ptr %10) #3
  br i1 %33, label %34, label %40

34:                                               ; preds = %32
  %35 = load i32, ptr %9, align 4, !tbaa !9
  %36 = sext i32 %35 to i64
  %37 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %0, i64 noundef %36) #3
  %38 = load i32, ptr %37, align 4, !tbaa !9
  store i32 %38, ptr %7, align 4, !tbaa !9
  %39 = load i32, ptr %9, align 4, !tbaa !9
  store i32 %39, ptr %8, align 4, !tbaa !9
  br label %40

40:                                               ; preds = %34, %32
  br label %41

41:                                               ; preds = %40
  %42 = load i32, ptr %9, align 4, !tbaa !9
  %43 = add nsw i32 %42, 1
  store i32 %43, ptr %9, align 4, !tbaa !9
  br label %11, !llvm.loop !11

44:                                               ; preds = %15
  %45 = load i32, ptr %8, align 4, !tbaa !9
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #3
  ret i32 %45
}

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

; Function Attrs: mustprogress uwtable
declare dso_local { ptr, i64 } @_ZNSt6vectorIbSaIbEEixEm(ptr noundef nonnull align 8 dereferenceable(40), i64 noundef) #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef zeroext i1 @_ZNKSt14_Bit_referencecvbEv(ptr noundef nonnull align 8 dereferenceable(16)) #2 align 2

; 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) #2 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 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 = { 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 #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 = !{!"int", !7, i64 0}
!11 = distinct !{!11, !12}
!12 = !{!"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.std::_Bit_reference" = type { ptr, i64 }

; Function Attrs: mustprogress uwtable
define dso_local noundef i32 @_ZN17greedy_algorithms8dijkstra16minimum_distanceESt6vectorIiSaIiEES1_IbSaIbEEi(ptr noundef %0, ptr noundef %1, i32 noundef %2) local_unnamed_addr #0 {
  %4 = alloca %"struct.std::_Bit_reference", align 8
  %5 = icmp sgt i32 %2, 0
  br i1 %5, label %.lr.ph, label %._crit_edge

.lr.ph:                                           ; preds = %3
  %6 = getelementptr inbounds i8, ptr %4, i64 8
  %wide.trip.count = zext nneg i32 %2 to i64
  br label %7

._crit_edge:                                      ; preds = %20, %3
  %.09.lcssa = phi i32 [ 0, %3 ], [ %.1, %20 ]
  ret i32 %.09.lcssa

7:                                                ; preds = %.lr.ph, %20
  %indvars.iv = phi i64 [ 0, %.lr.ph ], [ %indvars.iv.next, %20 ]
  %.0913 = phi i32 [ 0, %.lr.ph ], [ %.1, %20 ]
  %.01012 = phi i32 [ 2147483647, %.lr.ph ], [ %.111, %20 ]
  call void @llvm.lifetime.start.p0(i64 16, ptr nonnull %4) #3
  %8 = call { ptr, i64 } @_ZNSt6vectorIbSaIbEEixEm(ptr noundef nonnull align 8 dereferenceable(40) %1, i64 noundef %indvars.iv)
  %9 = extractvalue { ptr, i64 } %8, 0
  store ptr %9, ptr %4, align 8
  %10 = extractvalue { ptr, i64 } %8, 1
  store i64 %10, ptr %6, align 8
  %11 = call noundef zeroext i1 @_ZNKSt14_Bit_referencecvbEv(ptr noundef nonnull align 8 dereferenceable(16) %4) #3
  br i1 %11, label %.critedge, label %12

12:                                               ; preds = %7
  %13 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %0, i64 noundef %indvars.iv) #3
  %14 = load i32, ptr %13, align 4, !tbaa !5
  %15 = icmp slt i32 %14, %.01012
  call void @llvm.lifetime.end.p0(i64 16, ptr nonnull %4) #3
  br i1 %15, label %16, label %20

16:                                               ; preds = %12
  %17 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %0, i64 noundef %indvars.iv) #3
  %18 = load i32, ptr %17, align 4, !tbaa !5
  %19 = trunc nuw nsw i64 %indvars.iv to i32
  br label %20

.critedge:                                        ; preds = %7
  call void @llvm.lifetime.end.p0(i64 16, ptr nonnull %4) #3
  br label %20

20:                                               ; preds = %12, %16, %.critedge
  %.111 = phi i32 [ %.01012, %.critedge ], [ %18, %16 ], [ %.01012, %12 ]
  %.1 = phi i32 [ %.0913, %.critedge ], [ %19, %16 ], [ %.0913, %12 ]
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %exitcond.not = icmp eq i64 %indvars.iv.next, %wide.trip.count
  br i1 %exitcond.not, label %._crit_edge, label %7, !llvm.loop !9
}

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

; Function Attrs: mustprogress uwtable
declare dso_local { ptr, i64 } @_ZNSt6vectorIbSaIbEEixEm(ptr noundef nonnull align 8 dereferenceable(40), i64 noundef) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef zeroext i1 @_ZNKSt14_Bit_referencecvbEv(ptr noundef nonnull align 8 dereferenceable(16)) local_unnamed_addr #2 align 2

; 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 #2 align 2

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

attributes #0 = { 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 #1 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { 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 #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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}


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