; LLVM IR from xirc/cp-algorithm :: aoj/ITP2/ITP2-11B/main.ll (Z5parseRKSt6vectorIiSaIiEE)

; 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.std::bitset" = type { %"struct.std::_Base_bitset" }
%"struct.std::_Base_bitset" = type { i64 }
%"class.__gnu_cxx::__normal_iterator" = type { ptr }
%"class.std::bitset<20>::reference" = type { ptr, i64 }

; 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 noundef i32 @_Z5parseRKSt6vectorIiSaIiEE(ptr noundef nonnull align 8 dereferenceable(24) %0) #1 {
  %2 = alloca ptr, align 8
  %3 = alloca %"class.std::bitset", align 8
  %4 = alloca ptr, align 8
  %5 = alloca %"class.__gnu_cxx::__normal_iterator", align 8
  %6 = alloca %"class.__gnu_cxx::__normal_iterator", align 8
  %7 = alloca i32, align 4
  %8 = alloca %"class.std::bitset<20>::reference", align 8
  store ptr %0, ptr %2, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %3) #4
  call void @_ZNSt6bitsetILm20EEC2Ey(ptr noundef nonnull align 8 dereferenceable(8) %3, i64 noundef 0) #4
  call void @llvm.lifetime.start.p0(i64 8, ptr %4) #4
  %9 = load ptr, ptr %2, align 8, !tbaa !5
  store ptr %9, ptr %4, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %5) #4
  %10 = load ptr, ptr %4, align 8, !tbaa !5
  %11 = call ptr @_ZNKSt6vectorIiSaIiEE5beginEv(ptr noundef nonnull align 8 dereferenceable(24) %10) #4
  %12 = getelementptr inbounds %"class.__gnu_cxx::__normal_iterator", ptr %5, i32 0, i32 0
  store ptr %11, ptr %12, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #4
  %13 = load ptr, ptr %4, align 8, !tbaa !5
  %14 = call ptr @_ZNKSt6vectorIiSaIiEE3endEv(ptr noundef nonnull align 8 dereferenceable(24) %13) #4
  %15 = getelementptr inbounds %"class.__gnu_cxx::__normal_iterator", ptr %6, i32 0, i32 0
  store ptr %14, ptr %15, align 8
  br label %16

16:                                               ; preds = %25, %1
  %17 = call noundef zeroext i1 @_ZN9__gnu_cxxneIPKiSt6vectorIiSaIiEEEEbRKNS_17__normal_iteratorIT_T0_EESB_(ptr noundef nonnull align 8 dereferenceable(8) %5, ptr noundef nonnull align 8 dereferenceable(8) %6) #4
  br i1 %17, label %19, label %18

18:                                               ; preds = %16
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr %4) #4
  br label %27

19:                                               ; preds = %16
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #4
  %20 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNK9__gnu_cxx17__normal_iteratorIPKiSt6vectorIiSaIiEEEdeEv(ptr noundef nonnull align 8 dereferenceable(8) %5) #4
  %21 = load i32, ptr %20, align 4, !tbaa !9
  store i32 %21, ptr %7, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 16, ptr %8) #4
  %22 = load i32, ptr %7, align 4, !tbaa !9
  %23 = sext i32 %22 to i64
  call void @_ZNSt6bitsetILm20EEixEm(ptr dead_on_unwind writable sret(%"class.std::bitset<20>::reference") align 8 %8, ptr noundef nonnull align 8 dereferenceable(8) %3, i64 noundef %23)
  %24 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSt6bitsetILm20EE9referenceaSEb(ptr noundef nonnull align 8 dereferenceable(16) %8, i1 noundef zeroext true) #4
  call void @_ZNSt6bitsetILm20EE9referenceD2Ev(ptr noundef nonnull align 8 dereferenceable(16) %8) #4
  call void @llvm.lifetime.end.p0(i64 16, ptr %8) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #4
  br label %25

25:                                               ; preds = %19
  %26 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZN9__gnu_cxx17__normal_iteratorIPKiSt6vectorIiSaIiEEEppEv(ptr noundef nonnull align 8 dereferenceable(8) %5) #4
  br label %16

27:                                               ; preds = %18
  %28 = call noundef i64 @_ZNKSt6bitsetILm20EE8to_ulongEv(ptr noundef nonnull align 8 dereferenceable(8) %3)
  %29 = trunc i64 %28 to i32
  call void @llvm.lifetime.end.p0(i64 8, ptr %3) #4
  ret i32 %29
}

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6bitsetILm20EEC2Ey(ptr noundef nonnull align 8 dereferenceable(8), i64 noundef) unnamed_addr #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZNKSt6vectorIiSaIiEE5beginEv(ptr noundef nonnull align 8 dereferenceable(24)) #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZNKSt6vectorIiSaIiEE3endEv(ptr noundef nonnull align 8 dereferenceable(24)) #2 align 2

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef zeroext i1 @_ZN9__gnu_cxxneIPKiSt6vectorIiSaIiEEEEbRKNS_17__normal_iteratorIT_T0_EESB_(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef nonnull align 8 dereferenceable(8)) #3

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZNK9__gnu_cxx17__normal_iteratorIPKiSt6vectorIiSaIiEEEdeEv(ptr noundef nonnull align 8 dereferenceable(8)) #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6bitsetILm20EEixEm(ptr dead_on_unwind noalias writable sret(%"class.std::bitset<20>::reference") align 8, ptr noundef nonnull align 8 dereferenceable(8), i64 noundef) #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(16) ptr @_ZNSt6bitsetILm20EE9referenceaSEb(ptr noundef nonnull align 8 dereferenceable(16), i1 noundef zeroext) #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6bitsetILm20EE9referenceD2Ev(ptr noundef nonnull align 8 dereferenceable(16)) unnamed_addr #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(8) ptr @_ZN9__gnu_cxx17__normal_iteratorIPKiSt6vectorIiSaIiEEEppEv(ptr noundef nonnull align 8 dereferenceable(8)) #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i64 @_ZNKSt6bitsetILm20EE8to_ulongEv(ptr noundef nonnull align 8 dereferenceable(8)) #2 align 2

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 = { 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 #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}


; 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.std::bitset" = type { %"struct.std::_Base_bitset" }
%"struct.std::_Base_bitset" = type { i64 }
%"class.__gnu_cxx::__normal_iterator" = type { ptr }
%"class.std::bitset<20>::reference" = type { ptr, i64 }

; 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 i32 @_Z5parseRKSt6vectorIiSaIiEE(ptr noundef nonnull align 8 dereferenceable(24) %0) local_unnamed_addr #1 {
  %2 = alloca %"class.std::bitset", align 8
  %3 = alloca %"class.__gnu_cxx::__normal_iterator", align 8
  %4 = alloca %"class.__gnu_cxx::__normal_iterator", align 8
  %5 = alloca %"class.std::bitset<20>::reference", align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %2) #3
  call void @_ZNSt6bitsetILm20EEC2Ey(ptr noundef nonnull align 8 dereferenceable(8) %2, i64 noundef 0) #3
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %3) #3
  %6 = call ptr @_ZNKSt6vectorIiSaIiEE5beginEv(ptr noundef nonnull align 8 dereferenceable(24) %0) #3
  store ptr %6, ptr %3, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %4) #3
  %7 = call ptr @_ZNKSt6vectorIiSaIiEE3endEv(ptr noundef nonnull align 8 dereferenceable(24) %0) #3
  store ptr %7, ptr %4, align 8
  %8 = call noundef zeroext i1 @_ZN9__gnu_cxxneIPKiSt6vectorIiSaIiEEEEbRKNS_17__normal_iteratorIT_T0_EESB_(ptr noundef nonnull align 8 dereferenceable(8) %3, ptr noundef nonnull align 8 dereferenceable(8) %4) #3
  br i1 %8, label %.lr.ph, label %._crit_edge

._crit_edge:                                      ; preds = %.lr.ph, %1
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %4) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %3) #3
  %9 = call noundef i64 @_ZNKSt6bitsetILm20EE8to_ulongEv(ptr noundef nonnull align 8 dereferenceable(8) %2)
  %10 = trunc i64 %9 to i32
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %2) #3
  ret i32 %10

.lr.ph:                                           ; preds = %1, %.lr.ph
  %11 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNK9__gnu_cxx17__normal_iteratorIPKiSt6vectorIiSaIiEEEdeEv(ptr noundef nonnull align 8 dereferenceable(8) %3) #3
  %12 = load i32, ptr %11, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 16, ptr nonnull %5) #3
  %13 = sext i32 %12 to i64
  call void @_ZNSt6bitsetILm20EEixEm(ptr dead_on_unwind nonnull writable sret(%"class.std::bitset<20>::reference") align 8 %5, ptr noundef nonnull align 8 dereferenceable(8) %2, i64 noundef %13)
  %14 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSt6bitsetILm20EE9referenceaSEb(ptr noundef nonnull align 8 dereferenceable(16) %5, i1 noundef zeroext true) #3
  call void @_ZNSt6bitsetILm20EE9referenceD2Ev(ptr noundef nonnull align 8 dereferenceable(16) %5) #3
  call void @llvm.lifetime.end.p0(i64 16, ptr nonnull %5) #3
  %15 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZN9__gnu_cxx17__normal_iteratorIPKiSt6vectorIiSaIiEEEppEv(ptr noundef nonnull align 8 dereferenceable(8) %3) #3
  %16 = call noundef zeroext i1 @_ZN9__gnu_cxxneIPKiSt6vectorIiSaIiEEEEbRKNS_17__normal_iteratorIT_T0_EESB_(ptr noundef nonnull align 8 dereferenceable(8) %3, ptr noundef nonnull align 8 dereferenceable(8) %4) #3
  br i1 %16, label %.lr.ph, label %._crit_edge
}

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6bitsetILm20EEC2Ey(ptr noundef nonnull align 8 dereferenceable(8), i64 noundef) unnamed_addr #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZNKSt6vectorIiSaIiEE5beginEv(ptr noundef nonnull align 8 dereferenceable(24)) local_unnamed_addr #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZNKSt6vectorIiSaIiEE3endEv(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_cxxneIPKiSt6vectorIiSaIiEEEEbRKNS_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 noundef nonnull align 4 dereferenceable(4) ptr @_ZNK9__gnu_cxx17__normal_iteratorIPKiSt6vectorIiSaIiEEEdeEv(ptr noundef nonnull align 8 dereferenceable(8)) local_unnamed_addr #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6bitsetILm20EEixEm(ptr dead_on_unwind noalias writable sret(%"class.std::bitset<20>::reference") align 8, ptr noundef nonnull align 8 dereferenceable(8), i64 noundef) local_unnamed_addr #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(16) ptr @_ZNSt6bitsetILm20EE9referenceaSEb(ptr noundef nonnull align 8 dereferenceable(16), i1 noundef zeroext) local_unnamed_addr #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6bitsetILm20EE9referenceD2Ev(ptr noundef nonnull align 8 dereferenceable(16)) unnamed_addr #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(8) ptr @_ZN9__gnu_cxx17__normal_iteratorIPKiSt6vectorIiSaIiEEEppEv(ptr noundef nonnull align 8 dereferenceable(8)) local_unnamed_addr #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i64 @_ZNKSt6bitsetILm20EE8to_ulongEv(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"}


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