; LLVM IR from ox-vgg/vise :: src/search_engine/relja_retrival/matching/det_ransac (putative)

; 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.__gnu_cxx::__normal_iterator.22" = type { ptr }
%"struct.std::pair.18" = type { i32, float }

; 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 @_ZN14indSorter_Soft8isSortedERKSt6vectorISt4pairIjfESaIS2_EERKS0_IjSaIjEE(ptr noundef nonnull align 8 dereferenceable(24) %0, ptr noundef nonnull align 8 dereferenceable(24) %1) #1 align 2 {
  %3 = alloca i1, align 1
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  %6 = alloca i32, align 4
  %7 = alloca %"class.__gnu_cxx::__normal_iterator.22", align 8
  %8 = alloca %"class.__gnu_cxx::__normal_iterator.22", align 8
  %9 = alloca i32, align 4
  store ptr %0, ptr %4, align 8, !tbaa !5
  store ptr %1, ptr %5, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #3
  store i32 0, ptr %6, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %7) #3
  %10 = load ptr, ptr %5, align 8, !tbaa !5
  %11 = call ptr @_ZNKSt6vectorIjSaIjEE5beginEv(ptr noundef nonnull align 8 dereferenceable(24) %10) #3
  %12 = getelementptr inbounds %"class.__gnu_cxx::__normal_iterator.22", ptr %7, i32 0, i32 0
  store ptr %11, ptr %12, align 8
  br label %13

13:                                               ; preds = %38, %2
  call void @llvm.lifetime.start.p0(i64 8, ptr %8) #3
  %14 = load ptr, ptr %5, align 8, !tbaa !5
  %15 = call ptr @_ZNKSt6vectorIjSaIjEE3endEv(ptr noundef nonnull align 8 dereferenceable(24) %14) #3
  %16 = getelementptr inbounds %"class.__gnu_cxx::__normal_iterator.22", ptr %8, i32 0, i32 0
  store ptr %15, ptr %16, align 8
  %17 = call noundef zeroext i1 @_ZN9__gnu_cxxneIPKjSt6vectorIjSaIjEEEEbRKNS_17__normal_iteratorIT_T0_EESB_(ptr noundef nonnull align 8 dereferenceable(8) %7, ptr noundef nonnull align 8 dereferenceable(8) %8) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %8) #3
  br i1 %17, label %19, label %18

18:                                               ; preds = %13
  store i32 2, ptr %9, align 4
  br label %40

19:                                               ; preds = %13
  %20 = load ptr, ptr %4, align 8, !tbaa !5
  %21 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNK9__gnu_cxx17__normal_iteratorIPKjSt6vectorIjSaIjEEEdeEv(ptr noundef nonnull align 8 dereferenceable(8) %7) #3
  %22 = load i32, ptr %21, align 4, !tbaa !9
  %23 = zext i32 %22 to i64
  %24 = call noundef nonnull align 4 dereferenceable(8) ptr @_ZNKSt6vectorISt4pairIjfESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %20, i64 noundef %23) #3
  %25 = getelementptr inbounds %"struct.std::pair.18", ptr %24, i32 0, i32 0
  %26 = load i32, ptr %25, align 4, !tbaa !11
  %27 = load i32, ptr %6, align 4, !tbaa !9
  %28 = icmp ult i32 %26, %27
  br i1 %28, label %29, label %30

29:                                               ; preds = %19
  store i1 false, ptr %3, align 1
  store i32 1, ptr %9, align 4
  br label %40

30:                                               ; preds = %19
  %31 = load ptr, ptr %4, align 8, !tbaa !5
  %32 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNK9__gnu_cxx17__normal_iteratorIPKjSt6vectorIjSaIjEEEdeEv(ptr noundef nonnull align 8 dereferenceable(8) %7) #3
  %33 = load i32, ptr %32, align 4, !tbaa !9
  %34 = zext i32 %33 to i64
  %35 = call noundef nonnull align 4 dereferenceable(8) ptr @_ZNKSt6vectorISt4pairIjfESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %31, i64 noundef %34) #3
  %36 = getelementptr inbounds %"struct.std::pair.18", ptr %35, i32 0, i32 0
  %37 = load i32, ptr %36, align 4, !tbaa !11
  store i32 %37, ptr %6, align 4, !tbaa !9
  br label %38

38:                                               ; preds = %30
  %39 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZN9__gnu_cxx17__normal_iteratorIPKjSt6vectorIjSaIjEEEppEv(ptr noundef nonnull align 8 dereferenceable(8) %7) #3
  br label %13, !llvm.loop !14

40:                                               ; preds = %29, %18
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #3
  %41 = load i32, ptr %9, align 4
  switch i32 %41, label %43 [
    i32 2, label %42
  ]

42:                                               ; preds = %40
  store i1 true, ptr %3, align 1
  store i32 1, ptr %9, align 4
  br label %43

43:                                               ; preds = %42, %40
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #3
  %44 = load i1, ptr %3, align 1
  ret i1 %44
}

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(8) ptr @_ZNKSt6vectorISt4pairIjfESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZNKSt6vectorIjSaIjEE5beginEv(ptr noundef nonnull align 8 dereferenceable(24)) #1 align 2

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef zeroext i1 @_ZN9__gnu_cxxneIPKjSt6vectorIjSaIjEEEEbRKNS_17__normal_iteratorIT_T0_EESB_(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef nonnull align 8 dereferenceable(8)) #2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZNKSt6vectorIjSaIjEE3endEv(ptr noundef nonnull align 8 dereferenceable(24)) #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZNK9__gnu_cxx17__normal_iteratorIPKjSt6vectorIjSaIjEEEdeEv(ptr noundef nonnull align 8 dereferenceable(8)) #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(8) ptr @_ZN9__gnu_cxx17__normal_iteratorIPKjSt6vectorIjSaIjEEEppEv(ptr noundef nonnull align 8 dereferenceable(8)) #1 align 2

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 = { inlinehint 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 = !{!12, !10, i64 0}
!12 = !{!"_ZTSSt4pairIjfE", !10, i64 0, !13, i64 4}
!13 = !{!"float", !7, i64 0}
!14 = distinct !{!14, !15}
!15 = !{!"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.__gnu_cxx::__normal_iterator.22" = type { ptr }

; 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 nounwind uwtable
define dso_local noundef zeroext i1 @_ZN14indSorter_Soft8isSortedERKSt6vectorISt4pairIjfESaIS2_EERKS0_IjSaIjEE(ptr noundef nonnull align 8 dereferenceable(24) %0, ptr noundef nonnull align 8 dereferenceable(24) %1) local_unnamed_addr #1 align 2 {
  %3 = alloca %"class.__gnu_cxx::__normal_iterator.22", align 8
  %4 = alloca %"class.__gnu_cxx::__normal_iterator.22", align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %3) #3
  %5 = tail call ptr @_ZNKSt6vectorIjSaIjEE5beginEv(ptr noundef nonnull align 8 dereferenceable(24) %1) #3
  store ptr %5, ptr %3, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %4) #3
  %6 = tail call ptr @_ZNKSt6vectorIjSaIjEE3endEv(ptr noundef nonnull align 8 dereferenceable(24) %1) #3
  store ptr %6, ptr %4, align 8
  %7 = call noundef zeroext i1 @_ZN9__gnu_cxxneIPKjSt6vectorIjSaIjEEEEbRKNS_17__normal_iteratorIT_T0_EESB_(ptr noundef nonnull align 8 dereferenceable(8) %3, ptr noundef nonnull align 8 dereferenceable(8) %4) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %4) #3
  br i1 %7, label %.lr.ph, label %.critedge

.lr.ph:                                           ; preds = %2, %14
  %.069 = phi i32 [ %19, %14 ], [ 0, %2 ]
  %8 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNK9__gnu_cxx17__normal_iteratorIPKjSt6vectorIjSaIjEEEdeEv(ptr noundef nonnull align 8 dereferenceable(8) %3) #3
  %9 = load i32, ptr %8, align 4, !tbaa !5
  %10 = zext i32 %9 to i64
  %11 = call noundef nonnull align 4 dereferenceable(8) ptr @_ZNKSt6vectorISt4pairIjfESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %0, i64 noundef %10) #3
  %12 = load i32, ptr %11, align 4, !tbaa !9
  %13 = icmp ult i32 %12, %.069
  br i1 %13, label %23, label %14

14:                                               ; preds = %.lr.ph
  %15 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNK9__gnu_cxx17__normal_iteratorIPKjSt6vectorIjSaIjEEEdeEv(ptr noundef nonnull align 8 dereferenceable(8) %3) #3
  %16 = load i32, ptr %15, align 4, !tbaa !5
  %17 = zext i32 %16 to i64
  %18 = call noundef nonnull align 4 dereferenceable(8) ptr @_ZNKSt6vectorISt4pairIjfESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %0, i64 noundef %17) #3
  %19 = load i32, ptr %18, align 4, !tbaa !9
  %20 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZN9__gnu_cxx17__normal_iteratorIPKjSt6vectorIjSaIjEEEppEv(ptr noundef nonnull align 8 dereferenceable(8) %3) #3
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %4) #3
  %21 = call ptr @_ZNKSt6vectorIjSaIjEE3endEv(ptr noundef nonnull align 8 dereferenceable(24) %1) #3
  store ptr %21, ptr %4, align 8
  %22 = call noundef zeroext i1 @_ZN9__gnu_cxxneIPKjSt6vectorIjSaIjEEEEbRKNS_17__normal_iteratorIT_T0_EESB_(ptr noundef nonnull align 8 dereferenceable(8) %3, ptr noundef nonnull align 8 dereferenceable(8) %4) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %4) #3
  br i1 %22, label %.lr.ph, label %.critedge, !llvm.loop !12

23:                                               ; preds = %.lr.ph
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %3) #3
  br label %24

.critedge:                                        ; preds = %14, %2
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %3) #3
  br label %24

24:                                               ; preds = %23, %.critedge
  %.1 = phi i1 [ false, %23 ], [ true, %.critedge ]
  ret i1 %.1
}

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(8) ptr @_ZNKSt6vectorISt4pairIjfESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) local_unnamed_addr #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZNKSt6vectorIjSaIjEE5beginEv(ptr noundef nonnull align 8 dereferenceable(24)) local_unnamed_addr #1 align 2

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef zeroext i1 @_ZN9__gnu_cxxneIPKjSt6vectorIjSaIjEEEEbRKNS_17__normal_iteratorIT_T0_EESB_(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef nonnull align 8 dereferenceable(8)) local_unnamed_addr #2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZNKSt6vectorIjSaIjEE3endEv(ptr noundef nonnull align 8 dereferenceable(24)) local_unnamed_addr #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZNK9__gnu_cxx17__normal_iteratorIPKjSt6vectorIjSaIjEEEdeEv(ptr noundef nonnull align 8 dereferenceable(8)) local_unnamed_addr #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(8) ptr @_ZN9__gnu_cxx17__normal_iteratorIPKjSt6vectorIjSaIjEEEppEv(ptr noundef nonnull align 8 dereferenceable(8)) local_unnamed_addr #1 align 2

attributes #0 = { mustprogress 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 = { inlinehint 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 = !{!10, !6, i64 0}
!10 = !{!"_ZTSSt4pairIjfE", !6, i64 0, !11, i64 4}
!11 = !{!"float", !7, i64 0}
!12 = distinct !{!12, !13}
!13 = !{!"llvm.loop.mustprogress"}


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