; LLVM IR from microsoft/Multiverso :: src/net/allreduce_engine.ll (ZN10multiverso15AllreduceEngineC2Ev)

; 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.multiverso::AllreduceEngine" = type <{ i32, i32, ptr, %"class.multiverso::BruckMap", %"class.multiverso::RecursiveHalvingMap", ptr, ptr, ptr, i32, [4 x i8] }>
%"class.multiverso::BruckMap" = type { i32, %"class.std::vector", %"class.std::vector" }
%"class.std::vector" = type { %"struct.std::_Vector_base" }
%"struct.std::_Vector_base" = type { %"struct.std::_Vector_base<int, std::allocator<int>>::_Vector_impl" }
%"struct.std::_Vector_base<int, std::allocator<int>>::_Vector_impl" = type { %"struct.std::_Vector_base<int, std::allocator<int>>::_Vector_impl_data" }
%"struct.std::_Vector_base<int, std::allocator<int>>::_Vector_impl_data" = type { ptr, ptr, ptr }
%"class.multiverso::RecursiveHalvingMap" = type { i32, i32, i32, %"class.std::vector", %"class.std::vector", %"class.std::vector", %"class.std::vector", %"class.std::vector" }

; Function Attrs: mustprogress uwtable
define dso_local void @_ZN10multiverso15AllreduceEngineC2Ev(ptr noundef nonnull align 8 dereferenceable(236) %0) unnamed_addr #0 align 2 personality ptr @__gxx_personality_v0 {
  %2 = alloca ptr, align 8
  %3 = alloca ptr, align 8
  %4 = alloca i32, align 4
  store ptr %0, ptr %2, align 8, !tbaa !5
  %5 = load ptr, ptr %2, align 8
  %6 = getelementptr inbounds %"class.multiverso::AllreduceEngine", ptr %5, i32 0, i32 3
  call void @_ZN10multiverso8BruckMapC1Ev(ptr noundef nonnull align 8 dereferenceable(56) %6)
  %7 = getelementptr inbounds %"class.multiverso::AllreduceEngine", ptr %5, i32 0, i32 4
  invoke void @_ZN10multiverso19RecursiveHalvingMapC1Ev(ptr noundef nonnull align 8 dereferenceable(136) %7)
          to label %8 unwind label %12

8:                                                ; preds = %1
  %9 = getelementptr inbounds %"class.multiverso::AllreduceEngine", ptr %5, i32 0, i32 5
  store ptr null, ptr %9, align 8, !tbaa !9
  %10 = getelementptr inbounds %"class.multiverso::AllreduceEngine", ptr %5, i32 0, i32 6
  store ptr null, ptr %10, align 8, !tbaa !19
  %11 = getelementptr inbounds %"class.multiverso::AllreduceEngine", ptr %5, i32 0, i32 7
  store ptr null, ptr %11, align 8, !tbaa !20
  ret void

12:                                               ; preds = %1
  %13 = landingpad { ptr, i32 }
          cleanup
  %14 = extractvalue { ptr, i32 } %13, 0
  store ptr %14, ptr %3, align 8
  %15 = extractvalue { ptr, i32 } %13, 1
  store i32 %15, ptr %4, align 4
  call void @_ZN10multiverso8BruckMapD2Ev(ptr noundef nonnull align 8 dereferenceable(56) %6) #3
  br label %16

16:                                               ; preds = %12
  %17 = load ptr, ptr %3, align 8
  %18 = load i32, ptr %4, align 4
  %19 = insertvalue { ptr, i32 } poison, ptr %17, 0
  %20 = insertvalue { ptr, i32 } %19, i32 %18, 1
  resume { ptr, i32 } %20
}

declare void @_ZN10multiverso8BruckMapC1Ev(ptr noundef nonnull align 8 dereferenceable(56)) unnamed_addr #1

declare void @_ZN10multiverso19RecursiveHalvingMapC1Ev(ptr noundef nonnull align 8 dereferenceable(136)) unnamed_addr #1

declare i32 @__gxx_personality_v0(...)

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local void @_ZN10multiverso8BruckMapD2Ev(ptr noundef nonnull align 8 dereferenceable(56)) unnamed_addr #2 align 2

attributes #0 = { 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 #1 = { "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, !6, i64 208}
!10 = !{!"_ZTSN10multiverso15AllreduceEngineE", !11, i64 0, !11, i64 4, !6, i64 8, !12, i64 16, !17, i64 72, !6, i64 208, !6, i64 216, !6, i64 224, !11, i64 232}
!11 = !{!"int", !7, i64 0}
!12 = !{!"_ZTSN10multiverso8BruckMapE", !11, i64 0, !13, i64 8, !13, i64 32}
!13 = !{!"_ZTSSt6vectorIiSaIiEE", !14, i64 0}
!14 = !{!"_ZTSSt12_Vector_baseIiSaIiEE", !15, i64 0}
!15 = !{!"_ZTSNSt12_Vector_baseIiSaIiEE12_Vector_implE", !16, i64 0}
!16 = !{!"_ZTSNSt12_Vector_baseIiSaIiEE17_Vector_impl_dataE", !6, i64 0, !6, i64 8, !6, i64 16}
!17 = !{!"_ZTSN10multiverso19RecursiveHalvingMapE", !11, i64 0, !18, i64 4, !11, i64 8, !13, i64 16, !13, i64 40, !13, i64 64, !13, i64 88, !13, i64 112}
!18 = !{!"_ZTSN10multiverso24RecursiveHalvingNodeTypeE", !7, i64 0}
!19 = !{!10, !6, i64 216}
!20 = !{!10, !6, i64 224}


; 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 uwtable
define dso_local void @_ZN10multiverso15AllreduceEngineC2Ev(ptr noundef nonnull align 8 dereferenceable(236) %0) unnamed_addr #0 align 2 personality ptr @__gxx_personality_v0 {
  %2 = getelementptr inbounds i8, ptr %0, i64 16
  tail call void @_ZN10multiverso8BruckMapC1Ev(ptr noundef nonnull align 8 dereferenceable(56) %2)
  %3 = getelementptr inbounds i8, ptr %0, i64 72
  invoke void @_ZN10multiverso19RecursiveHalvingMapC1Ev(ptr noundef nonnull align 8 dereferenceable(136) %3)
          to label %4 unwind label %6

4:                                                ; preds = %1
  %5 = getelementptr inbounds i8, ptr %0, i64 208
  tail call void @llvm.memset.p0.i64(ptr noundef nonnull align 8 dereferenceable(24) %5, i8 0, i64 24, i1 false)
  ret void

6:                                                ; preds = %1
  %7 = landingpad { ptr, i32 }
          cleanup
  tail call void @_ZN10multiverso8BruckMapD2Ev(ptr noundef nonnull align 8 dereferenceable(56) %2) #4
  resume { ptr, i32 } %7
}

declare void @_ZN10multiverso8BruckMapC1Ev(ptr noundef nonnull align 8 dereferenceable(56)) unnamed_addr #1

declare void @_ZN10multiverso19RecursiveHalvingMapC1Ev(ptr noundef nonnull align 8 dereferenceable(136)) unnamed_addr #1

declare i32 @__gxx_personality_v0(...)

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local void @_ZN10multiverso8BruckMapD2Ev(ptr noundef nonnull align 8 dereferenceable(56)) unnamed_addr #2 align 2

; Function Attrs: nocallback nofree nounwind willreturn memory(argmem: write)
declare void @llvm.memset.p0.i64(ptr nocapture writeonly, i8, i64, i1 immarg) #3

attributes #0 = { 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 #1 = { "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 = { nocallback nofree nounwind willreturn memory(argmem: write) }
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)"}


; Effective O3 passes: EarlyCSEPass,InstCombinePass,MemCpyOptPass,SROAPass,SimplifyCFGPass,TailCallElimPass