; LLVM IR from JerrySievert/cdb :: src/table.ll/ZN5Table5fieldENSt7 (cxx1112basic_stringIcSt11char_traitsIcESaIcEEE)

; 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.Table = type { %"class.std::vector", %"class.std::__cxx11::basic_string" }
%"class.std::vector" = type { %"struct.std::_Vector_base" }
%"struct.std::_Vector_base" = type { %"struct.std::_Vector_base<Field, std::allocator<Field>>::_Vector_impl" }
%"struct.std::_Vector_base<Field, std::allocator<Field>>::_Vector_impl" = type { %"struct.std::_Vector_base<Field, std::allocator<Field>>::_Vector_impl_data" }
%"struct.std::_Vector_base<Field, std::allocator<Field>>::_Vector_impl_data" = type { ptr, ptr, ptr }
%"class.std::__cxx11::basic_string" = type { %"struct.std::__cxx11::basic_string<char>::_Alloc_hider", i64, %union.anon }
%"struct.std::__cxx11::basic_string<char>::_Alloc_hider" = type { ptr }
%union.anon = type { i64, [8 x i8] }
%class.Field = type <{ %"class.std::__cxx11::basic_string", i8, [7 x i8] }>

; 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 signext i16 @_ZN5Table5fieldENSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE(ptr noundef nonnull align 8 dereferenceable(56) %0, ptr noundef %1) #1 align 2 {
  %3 = alloca i16, align 2
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  %6 = alloca i16, align 2
  %7 = alloca i32, align 4
  store ptr %0, ptr %4, align 8, !tbaa !5
  store ptr %1, ptr %5, align 8, !tbaa !5
  %8 = load ptr, ptr %4, align 8
  call void @llvm.lifetime.start.p0(i64 2, ptr %6) #3
  store i16 0, ptr %6, align 2, !tbaa !9
  br label %9

9:                                                ; preds = %26, %2
  %10 = load i16, ptr %6, align 2, !tbaa !9
  %11 = zext i16 %10 to i64
  %12 = getelementptr inbounds %class.Table, ptr %8, i32 0, i32 0
  %13 = call noundef i64 @_ZNKSt6vectorI5FieldSaIS0_EE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) %12) #3
  %14 = icmp ult i64 %11, %13
  br i1 %14, label %16, label %15

15:                                               ; preds = %9
  store i32 2, ptr %7, align 4
  br label %29

16:                                               ; preds = %9
  %17 = getelementptr inbounds %class.Table, ptr %8, i32 0, i32 0
  %18 = load i16, ptr %6, align 2, !tbaa !9
  %19 = zext i16 %18 to i64
  %20 = call noundef nonnull align 8 dereferenceable(33) ptr @_ZNSt6vectorI5FieldSaIS0_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %17, i64 noundef %19) #3
  %21 = getelementptr inbounds %class.Field, ptr %20, i32 0, i32 0
  %22 = call noundef zeroext i1 @_ZSteqIcEN9__gnu_cxx11__enable_ifIXsr9__is_charIT_EE7__valueEbE6__typeERKNSt7__cxx1112basic_stringIS2_St11char_traitsIS2_ESaIS2_EEESC_(ptr noundef nonnull align 8 dereferenceable(32) %21, ptr noundef nonnull align 8 dereferenceable(32) %1) #3
  br i1 %22, label %23, label %25

23:                                               ; preds = %16
  %24 = load i16, ptr %6, align 2, !tbaa !9
  store i16 %24, ptr %3, align 2
  store i32 1, ptr %7, align 4
  br label %29

25:                                               ; preds = %16
  br label %26

26:                                               ; preds = %25
  %27 = load i16, ptr %6, align 2, !tbaa !9
  %28 = add i16 %27, 1
  store i16 %28, ptr %6, align 2, !tbaa !9
  br label %9, !llvm.loop !11

29:                                               ; preds = %23, %15
  call void @llvm.lifetime.end.p0(i64 2, ptr %6) #3
  %30 = load i32, ptr %7, align 4
  switch i32 %30, label %34 [
    i32 2, label %31
    i32 1, label %32
  ]

31:                                               ; preds = %29
  store i16 -1, ptr %3, align 2
  br label %32

32:                                               ; preds = %31, %29
  %33 = load i16, ptr %3, align 2
  ret i16 %33

34:                                               ; preds = %29
  unreachable
}

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i64 @_ZNKSt6vectorI5FieldSaIS0_EE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24)) #1 align 2

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef zeroext i1 @_ZSteqIcEN9__gnu_cxx11__enable_ifIXsr9__is_charIT_EE7__valueEbE6__typeERKNSt7__cxx1112basic_stringIS2_St11char_traitsIS2_ESaIS2_EEESC_(ptr noundef nonnull align 8 dereferenceable(32), ptr noundef nonnull align 8 dereferenceable(32)) #2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(33) ptr @_ZNSt6vectorI5FieldSaIS0_EEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) #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 = !{!"short", !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"

; Function Attrs: mustprogress nounwind uwtable
define dso_local noundef signext i16 @_ZN5Table5fieldENSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE(ptr noundef nonnull align 8 dereferenceable(56) %0, ptr noundef %1) local_unnamed_addr #0 align 2 {
  %3 = tail call noundef i64 @_ZNKSt6vectorI5FieldSaIS0_EE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) %0) #2
  %.not9.not = icmp eq i64 %3, 0
  br i1 %.not9.not, label %._crit_edge, label %.lr.ph

.lr.ph:                                           ; preds = %2, %7
  %4 = phi i64 [ %9, %7 ], [ 0, %2 ]
  %.0610 = phi i16 [ %8, %7 ], [ 0, %2 ]
  %5 = tail call noundef nonnull align 8 dereferenceable(33) ptr @_ZNSt6vectorI5FieldSaIS0_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %0, i64 noundef %4) #2
  %6 = tail call noundef zeroext i1 @_ZSteqIcEN9__gnu_cxx11__enable_ifIXsr9__is_charIT_EE7__valueEbE6__typeERKNSt7__cxx1112basic_stringIS2_St11char_traitsIS2_ESaIS2_EEESC_(ptr noundef nonnull align 8 dereferenceable(32) %5, ptr noundef nonnull align 8 dereferenceable(32) %1) #2
  br i1 %6, label %._crit_edge, label %7

7:                                                ; preds = %.lr.ph
  %8 = add i16 %.0610, 1
  %9 = zext i16 %8 to i64
  %10 = tail call noundef i64 @_ZNKSt6vectorI5FieldSaIS0_EE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) %0) #2
  %.not = icmp ugt i64 %10, %9
  br i1 %.not, label %.lr.ph, label %._crit_edge, !llvm.loop !5

._crit_edge:                                      ; preds = %7, %.lr.ph, %2
  %spec.select = phi i16 [ -1, %2 ], [ %.0610, %.lr.ph ], [ -1, %7 ]
  ret i16 %spec.select
}

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i64 @_ZNKSt6vectorI5FieldSaIS0_EE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24)) local_unnamed_addr #0 align 2

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef zeroext i1 @_ZSteqIcEN9__gnu_cxx11__enable_ifIXsr9__is_charIT_EE7__valueEbE6__typeERKNSt7__cxx1112basic_stringIS2_St11char_traitsIS2_ESaIS2_EEESC_(ptr noundef nonnull align 8 dereferenceable(32), ptr noundef nonnull align 8 dereferenceable(32)) local_unnamed_addr #1

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(33) ptr @_ZNSt6vectorI5FieldSaIS0_EEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) local_unnamed_addr #0 align 2

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 = { 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 #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 = distinct !{!5, !6}
!6 = !{!"llvm.loop.mustprogress"}


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