; LLVM IR from stonne-simulator/omega :: omega-code/stonne/src/AccumulationBuffer.ll (ZN18AccumulationBuffer12resetSignalsEv)

; 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::_Rb_tree_iterator" = type { ptr }
%class.AccumulationBuffer = type { %class.Unit, i32, i32, %"class.std::map", %"class.std::map.3", %"class.std::map.3" }
%class.Unit = type { ptr, i32, %"class.std::__cxx11::basic_string" }
%"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.std::map" = type { %"class.std::_Rb_tree" }
%"class.std::_Rb_tree" = type { %"struct.std::_Rb_tree<int, std::pair<const int, Accumulator *>, std::_Select1st<std::pair<const int, Accumulator *>>, std::less<int>>::_Rb_tree_impl" }
%"struct.std::_Rb_tree<int, std::pair<const int, Accumulator *>, std::_Select1st<std::pair<const int, Accumulator *>>, std::less<int>>::_Rb_tree_impl" = type { [8 x i8], %"struct.std::_Rb_tree_header" }
%"struct.std::_Rb_tree_header" = type { %"struct.std::_Rb_tree_node_base", i64 }
%"struct.std::_Rb_tree_node_base" = type { i32, ptr, ptr, ptr }
%"class.std::map.3" = type { %"class.std::_Rb_tree.4" }
%"class.std::_Rb_tree.4" = type { %"struct.std::_Rb_tree<int, std::pair<const int, Connection *>, std::_Select1st<std::pair<const int, Connection *>>, std::less<int>>::_Rb_tree_impl" }
%"struct.std::_Rb_tree<int, std::pair<const int, Connection *>, std::_Select1st<std::pair<const int, Connection *>>, std::less<int>>::_Rb_tree_impl" = type { [8 x i8], %"struct.std::_Rb_tree_header" }
%"struct.std::pair" = type { i32, 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 @_ZN18AccumulationBuffer12resetSignalsEv(ptr noundef nonnull align 8 dereferenceable(200) %0) #1 align 2 {
  %2 = alloca ptr, align 8
  %3 = alloca %"struct.std::_Rb_tree_iterator", align 8
  %4 = alloca %"struct.std::_Rb_tree_iterator", align 8
  store ptr %0, ptr %2, align 8, !tbaa !5
  %5 = load ptr, ptr %2, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr %3) #4
  %6 = getelementptr inbounds %class.AccumulationBuffer, ptr %5, i32 0, i32 3
  %7 = call ptr @_ZNSt3mapIiP11AccumulatorSt4lessIiESaISt4pairIKiS1_EEE5beginEv(ptr noundef nonnull align 8 dereferenceable(48) %6) #4
  %8 = getelementptr inbounds %"struct.std::_Rb_tree_iterator", ptr %3, i32 0, i32 0
  store ptr %7, ptr %8, align 8
  br label %9

9:                                                ; preds = %19, %1
  call void @llvm.lifetime.start.p0(i64 8, ptr %4) #4
  %10 = getelementptr inbounds %class.AccumulationBuffer, ptr %5, i32 0, i32 3
  %11 = call ptr @_ZNSt3mapIiP11AccumulatorSt4lessIiESaISt4pairIKiS1_EEE3endEv(ptr noundef nonnull align 8 dereferenceable(48) %10) #4
  %12 = getelementptr inbounds %"struct.std::_Rb_tree_iterator", ptr %4, i32 0, i32 0
  store ptr %11, ptr %12, align 8
  %13 = call noundef zeroext i1 @_ZStneRKSt17_Rb_tree_iteratorISt4pairIKiP11AccumulatorEES7_(ptr noundef nonnull align 8 dereferenceable(8) %3, ptr noundef nonnull align 8 dereferenceable(8) %4) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr %4) #4
  br i1 %13, label %15, label %14

14:                                               ; preds = %9
  call void @llvm.lifetime.end.p0(i64 8, ptr %3) #4
  br label %21

15:                                               ; preds = %9
  %16 = call noundef ptr @_ZNKSt17_Rb_tree_iteratorISt4pairIKiP11AccumulatorEEptEv(ptr noundef nonnull align 8 dereferenceable(8) %3) #4
  %17 = getelementptr inbounds %"struct.std::pair", ptr %16, i32 0, i32 1
  %18 = load ptr, ptr %17, align 8, !tbaa !9
  call void @_ZN11Accumulator12resetSignalsEv(ptr noundef nonnull align 8 dereferenceable(232) %18)
  br label %19

19:                                               ; preds = %15
  %20 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSt17_Rb_tree_iteratorISt4pairIKiP11AccumulatorEEppEv(ptr noundef nonnull align 8 dereferenceable(8) %3) #4
  br label %9, !llvm.loop !12

21:                                               ; preds = %14
  ret void
}

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZNSt3mapIiP11AccumulatorSt4lessIiESaISt4pairIKiS1_EEE5beginEv(ptr noundef nonnull align 8 dereferenceable(48)) #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef zeroext i1 @_ZStneRKSt17_Rb_tree_iteratorISt4pairIKiP11AccumulatorEES7_(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef nonnull align 8 dereferenceable(8)) #2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZNSt3mapIiP11AccumulatorSt4lessIiESaISt4pairIKiS1_EEE3endEv(ptr noundef nonnull align 8 dereferenceable(48)) #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef ptr @_ZNKSt17_Rb_tree_iteratorISt4pairIKiP11AccumulatorEEptEv(ptr noundef nonnull align 8 dereferenceable(8)) #2 align 2

declare void @_ZN11Accumulator12resetSignalsEv(ptr noundef nonnull align 8 dereferenceable(232)) #3

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(8) ptr @_ZNSt17_Rb_tree_iteratorISt4pairIKiP11AccumulatorEEppEv(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 = { "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, !6, i64 8}
!10 = !{!"_ZTSSt4pairIKiP11AccumulatorE", !11, i64 0, !6, i64 8}
!11 = !{!"int", !7, i64 0}
!12 = distinct !{!12, !13}
!13 = !{!"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::_Rb_tree_iterator" = 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 uwtable
define dso_local void @_ZN18AccumulationBuffer12resetSignalsEv(ptr noundef nonnull align 8 dereferenceable(200) %0) local_unnamed_addr #1 align 2 {
  %2 = alloca %"struct.std::_Rb_tree_iterator", align 8
  %3 = alloca %"struct.std::_Rb_tree_iterator", align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %2) #4
  %4 = getelementptr inbounds i8, ptr %0, i64 56
  %5 = tail call ptr @_ZNSt3mapIiP11AccumulatorSt4lessIiESaISt4pairIKiS1_EEE5beginEv(ptr noundef nonnull align 8 dereferenceable(48) %4) #4
  store ptr %5, ptr %2, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %3) #4
  %6 = tail call ptr @_ZNSt3mapIiP11AccumulatorSt4lessIiESaISt4pairIKiS1_EEE3endEv(ptr noundef nonnull align 8 dereferenceable(48) %4) #4
  store ptr %6, ptr %3, align 8
  %7 = call noundef zeroext i1 @_ZStneRKSt17_Rb_tree_iteratorISt4pairIKiP11AccumulatorEES7_(ptr noundef nonnull align 8 dereferenceable(8) %2, ptr noundef nonnull align 8 dereferenceable(8) %3) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %3) #4
  br i1 %7, label %.lr.ph, label %._crit_edge

._crit_edge:                                      ; preds = %.lr.ph, %1
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %2) #4
  ret void

.lr.ph:                                           ; preds = %1, %.lr.ph
  %8 = call noundef ptr @_ZNKSt17_Rb_tree_iteratorISt4pairIKiP11AccumulatorEEptEv(ptr noundef nonnull align 8 dereferenceable(8) %2) #4
  %9 = getelementptr inbounds i8, ptr %8, i64 8
  %10 = load ptr, ptr %9, align 8, !tbaa !5
  call void @_ZN11Accumulator12resetSignalsEv(ptr noundef nonnull align 8 dereferenceable(232) %10)
  %11 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSt17_Rb_tree_iteratorISt4pairIKiP11AccumulatorEEppEv(ptr noundef nonnull align 8 dereferenceable(8) %2) #4
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %3) #4
  %12 = call ptr @_ZNSt3mapIiP11AccumulatorSt4lessIiESaISt4pairIKiS1_EEE3endEv(ptr noundef nonnull align 8 dereferenceable(48) %4) #4
  store ptr %12, ptr %3, align 8
  %13 = call noundef zeroext i1 @_ZStneRKSt17_Rb_tree_iteratorISt4pairIKiP11AccumulatorEES7_(ptr noundef nonnull align 8 dereferenceable(8) %2, ptr noundef nonnull align 8 dereferenceable(8) %3) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %3) #4
  br i1 %13, label %.lr.ph, label %._crit_edge, !llvm.loop !11
}

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZNSt3mapIiP11AccumulatorSt4lessIiESaISt4pairIKiS1_EEE5beginEv(ptr noundef nonnull align 8 dereferenceable(48)) local_unnamed_addr #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef zeroext i1 @_ZStneRKSt17_Rb_tree_iteratorISt4pairIKiP11AccumulatorEES7_(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 @_ZNSt3mapIiP11AccumulatorSt4lessIiESaISt4pairIKiS1_EEE3endEv(ptr noundef nonnull align 8 dereferenceable(48)) local_unnamed_addr #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef ptr @_ZNKSt17_Rb_tree_iteratorISt4pairIKiP11AccumulatorEEptEv(ptr noundef nonnull align 8 dereferenceable(8)) local_unnamed_addr #2 align 2

declare void @_ZN11Accumulator12resetSignalsEv(ptr noundef nonnull align 8 dereferenceable(232)) local_unnamed_addr #3

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(8) ptr @_ZNSt17_Rb_tree_iteratorISt4pairIKiP11AccumulatorEEppEv(ptr noundef nonnull align 8 dereferenceable(8)) local_unnamed_addr #2 align 2

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, !10, i64 8}
!6 = !{!"_ZTSSt4pairIKiP11AccumulatorE", !7, i64 0, !10, i64 8}
!7 = !{!"int", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C++ TBAA"}
!10 = !{!"any pointer", !8, i64 0}
!11 = distinct !{!11, !12}
!12 = !{!"llvm.loop.mustprogress"}


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