; LLVM IR from generalized-intelligence/GAAS :: deprecated/algorithms/loop_closing/DBow3/src (BowVector)

; 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::pair.6" = type { i32, double }
%"struct.std::pair.4" = type <{ %"struct.std::_Rb_tree_iterator", i8, [7 x i8] }>
%"struct.std::_Rb_tree_iterator" = type { 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 uwtable
define dso_local void @_ZN5DBoW39BowVector10fromStreamERSi(ptr noundef nonnull align 8 dereferenceable(48) %0, ptr noundef nonnull align 8 dereferenceable(16) %1) #1 align 2 {
  %3 = alloca ptr, align 8
  %4 = alloca ptr, align 8
  %5 = alloca i32, align 4
  %6 = alloca i32, align 4
  %7 = alloca i32, align 4
  %8 = alloca double, align 8
  %9 = alloca %"struct.std::pair.6", align 8
  %10 = alloca %"struct.std::pair.4", align 8
  store ptr %0, ptr %3, align 8, !tbaa !5
  store ptr %1, ptr %4, align 8, !tbaa !5
  %11 = load ptr, ptr %3, align 8
  call void @_ZNSt3mapIjdSt4lessIjESaISt4pairIKjdEEE5clearEv(ptr noundef nonnull align 8 dereferenceable(48) %11) #4
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #4
  %12 = load ptr, ptr %4, align 8, !tbaa !5
  %13 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSi4readEPcl(ptr noundef nonnull align 8 dereferenceable(16) %12, ptr noundef %5, i64 noundef 4)
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #4
  store i32 0, ptr %6, align 4, !tbaa !9
  br label %14

14:                                               ; preds = %34, %2
  %15 = load i32, ptr %6, align 4, !tbaa !9
  %16 = load i32, ptr %5, align 4, !tbaa !9
  %17 = icmp ult i32 %15, %16
  br i1 %17, label %19, label %18

18:                                               ; preds = %14
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #4
  br label %37

19:                                               ; preds = %14
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #4
  call void @llvm.lifetime.start.p0(i64 8, ptr %8) #4
  %20 = load ptr, ptr %4, align 8, !tbaa !5
  %21 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSi4readEPcl(ptr noundef nonnull align 8 dereferenceable(16) %20, ptr noundef %7, i64 noundef 4)
  %22 = load ptr, ptr %4, align 8, !tbaa !5
  %23 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSi4readEPcl(ptr noundef nonnull align 8 dereferenceable(16) %22, ptr noundef %8, i64 noundef 8)
  call void @llvm.lifetime.start.p0(i64 16, ptr %9) #4
  %24 = call { i32, double } @_ZSt9make_pairIRjRdESt4pairINSt25__strip_reference_wrapperINSt5decayIT_E4typeEE6__typeENS3_INS4_IT0_E4typeEE6__typeEEOS5_OSA_(ptr noundef nonnull align 4 dereferenceable(4) %7, ptr noundef nonnull align 8 dereferenceable(8) %8)
  %25 = getelementptr inbounds { i32, double }, ptr %9, i32 0, i32 0
  %26 = extractvalue { i32, double } %24, 0
  store i32 %26, ptr %25, align 8
  %27 = getelementptr inbounds { i32, double }, ptr %9, i32 0, i32 1
  %28 = extractvalue { i32, double } %24, 1
  store double %28, ptr %27, align 8
  %29 = call { ptr, i8 } @_ZNSt3mapIjdSt4lessIjESaISt4pairIKjdEEE6insertIS2_IjdEEENSt9enable_ifIXsr16is_constructibleIS4_T_EE5valueES2_ISt17_Rb_tree_iteratorIS4_EbEE4typeEOSA_(ptr noundef nonnull align 8 dereferenceable(48) %11, ptr noundef nonnull align 8 dereferenceable(16) %9)
  %30 = getelementptr inbounds { ptr, i8 }, ptr %10, i32 0, i32 0
  %31 = extractvalue { ptr, i8 } %29, 0
  store ptr %31, ptr %30, align 8
  %32 = getelementptr inbounds { ptr, i8 }, ptr %10, i32 0, i32 1
  %33 = extractvalue { ptr, i8 } %29, 1
  store i8 %33, ptr %32, align 8
  call void @llvm.lifetime.end.p0(i64 16, ptr %9) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr %8) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #4
  br label %34

34:                                               ; preds = %19
  %35 = load i32, ptr %6, align 4, !tbaa !9
  %36 = add nsw i32 %35, 1
  store i32 %36, ptr %6, align 4, !tbaa !9
  br label %14, !llvm.loop !11

37:                                               ; preds = %18
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #4
  ret void
}

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt3mapIjdSt4lessIjESaISt4pairIKjdEEE5clearEv(ptr noundef nonnull align 8 dereferenceable(48)) #2 align 2

declare noundef nonnull align 8 dereferenceable(16) ptr @_ZNSi4readEPcl(ptr noundef nonnull align 8 dereferenceable(16), ptr noundef, i64 noundef) #3

; Function Attrs: mustprogress uwtable
declare dso_local { ptr, i8 } @_ZNSt3mapIjdSt4lessIjESaISt4pairIKjdEEE6insertIS2_IjdEEENSt9enable_ifIXsr16is_constructibleIS4_T_EE5valueES2_ISt17_Rb_tree_iteratorIS4_EbEE4typeEOSA_(ptr noundef nonnull align 8 dereferenceable(48), ptr noundef nonnull align 8 dereferenceable(16)) #1 align 2

; Function Attrs: mustprogress uwtable
declare dso_local { i32, double } @_ZSt9make_pairIRjRdESt4pairINSt25__strip_reference_wrapperINSt5decayIT_E4typeEE6__typeENS3_INS4_IT0_E4typeEE6__typeEEOS5_OSA_(ptr noundef nonnull align 4 dereferenceable(4), ptr noundef nonnull align 8 dereferenceable(8)) #1

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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 = { 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 = { "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 = 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::pair.6" = type { i32, double }

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: mustprogress uwtable
define dso_local void @_ZN5DBoW39BowVector10fromStreamERSi(ptr noundef nonnull align 8 dereferenceable(48) %0, ptr noundef nonnull align 8 dereferenceable(16) %1) local_unnamed_addr #1 align 2 {
  %3 = alloca i32, align 4
  %4 = alloca i32, align 4
  %5 = alloca double, align 8
  %6 = alloca %"struct.std::pair.6", align 8
  tail call void @_ZNSt3mapIjdSt4lessIjESaISt4pairIKjdEEE5clearEv(ptr noundef nonnull align 8 dereferenceable(48) %0) #4
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %3) #4
  %7 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSi4readEPcl(ptr noundef nonnull align 8 dereferenceable(16) %1, ptr noundef nonnull %3, i64 noundef 4)
  %8 = load i32, ptr %3, align 4, !tbaa !5
  %.not = icmp eq i32 %8, 0
  br i1 %.not, label %._crit_edge, label %.lr.ph

.lr.ph:                                           ; preds = %2
  %9 = getelementptr inbounds i8, ptr %6, i64 8
  br label %10

._crit_edge:                                      ; preds = %10, %2
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %3) #4
  ret void

10:                                               ; preds = %.lr.ph, %10
  %.05 = phi i32 [ 0, %.lr.ph ], [ %17, %10 ]
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %4) #4
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %5) #4
  %11 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSi4readEPcl(ptr noundef nonnull align 8 dereferenceable(16) %1, ptr noundef nonnull %4, i64 noundef 4)
  %12 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSi4readEPcl(ptr noundef nonnull align 8 dereferenceable(16) %1, ptr noundef nonnull %5, i64 noundef 8)
  call void @llvm.lifetime.start.p0(i64 16, ptr nonnull %6) #4
  %13 = call { i32, double } @_ZSt9make_pairIRjRdESt4pairINSt25__strip_reference_wrapperINSt5decayIT_E4typeEE6__typeENS3_INS4_IT0_E4typeEE6__typeEEOS5_OSA_(ptr noundef nonnull align 4 dereferenceable(4) %4, ptr noundef nonnull align 8 dereferenceable(8) %5)
  %14 = extractvalue { i32, double } %13, 0
  store i32 %14, ptr %6, align 8
  %15 = extractvalue { i32, double } %13, 1
  store double %15, ptr %9, align 8
  %16 = call { ptr, i8 } @_ZNSt3mapIjdSt4lessIjESaISt4pairIKjdEEE6insertIS2_IjdEEENSt9enable_ifIXsr16is_constructibleIS4_T_EE5valueES2_ISt17_Rb_tree_iteratorIS4_EbEE4typeEOSA_(ptr noundef nonnull align 8 dereferenceable(48) %0, ptr noundef nonnull align 8 dereferenceable(16) %6)
  call void @llvm.lifetime.end.p0(i64 16, ptr nonnull %6) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %5) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %4) #4
  %17 = add nuw nsw i32 %.05, 1
  %18 = load i32, ptr %3, align 4, !tbaa !5
  %19 = icmp ult i32 %17, %18
  br i1 %19, label %10, label %._crit_edge, !llvm.loop !9
}

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt3mapIjdSt4lessIjESaISt4pairIKjdEEE5clearEv(ptr noundef nonnull align 8 dereferenceable(48)) local_unnamed_addr #2 align 2

declare noundef nonnull align 8 dereferenceable(16) ptr @_ZNSi4readEPcl(ptr noundef nonnull align 8 dereferenceable(16), ptr noundef, i64 noundef) local_unnamed_addr #3

; Function Attrs: mustprogress uwtable
declare dso_local { ptr, i8 } @_ZNSt3mapIjdSt4lessIjESaISt4pairIKjdEEE6insertIS2_IjdEEENSt9enable_ifIXsr16is_constructibleIS4_T_EE5valueES2_ISt17_Rb_tree_iteratorIS4_EbEE4typeEOSA_(ptr noundef nonnull align 8 dereferenceable(48), ptr noundef nonnull align 8 dereferenceable(16)) local_unnamed_addr #1 align 2

; Function Attrs: mustprogress uwtable
declare dso_local { i32, double } @_ZSt9make_pairIRjRdESt4pairINSt25__strip_reference_wrapperINSt5decayIT_E4typeEE6__typeENS3_INS4_IT0_E4typeEE6__typeEEOS5_OSA_(ptr noundef nonnull align 4 dereferenceable(4), ptr noundef nonnull align 8 dereferenceable(8)) local_unnamed_addr #1

attributes #0 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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 = { 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 = { "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 = !{!"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,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LICMPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,SROAPass,SimplifyCFGPass,TailCallElimPass