; LLVM IR from facebookresearch/baspacho :: baspacho/testing/TestingMatGen.ll (ZN8BaSpaCho13testing_utils18SparseMatGeneratorC2Ell)

; 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::allocator" = type { i8 }
%"struct.std::pair" = type <{ %"struct.std::_Rb_tree_const_iterator", i8, [7 x i8] }>
%"struct.std::_Rb_tree_const_iterator" = type { ptr }
%"struct.BaSpaCho::testing_utils::SparseMatGenerator" = type { %"class.std::mersenne_twister_engine", %"class.std::vector" }
%"class.std::mersenne_twister_engine" = type { [624 x i64], i64 }
%"class.std::vector" = type { %"struct.std::_Vector_base" }
%"struct.std::_Vector_base" = type { %"struct.std::_Vector_base<std::set<long>, std::allocator<std::set<long>>>::_Vector_impl" }
%"struct.std::_Vector_base<std::set<long>, std::allocator<std::set<long>>>::_Vector_impl" = type { %"struct.std::_Vector_base<std::set<long>, std::allocator<std::set<long>>>::_Vector_impl_data" }
%"struct.std::_Vector_base<std::set<long>, std::allocator<std::set<long>>>::_Vector_impl_data" = type { ptr, ptr, ptr }

; Function Attrs: mustprogress uwtable
define dso_local void @_ZN8BaSpaCho13testing_utils18SparseMatGeneratorC2Ell(ptr noundef nonnull align 8 dereferenceable(5024) %0, i64 noundef %1, i64 noundef %2) unnamed_addr #0 align 2 personality ptr @__gxx_personality_v0 {
  %4 = alloca ptr, align 8
  %5 = alloca i64, align 8
  %6 = alloca i64, align 8
  %7 = alloca %"class.std::allocator", align 1
  %8 = alloca ptr, align 8
  %9 = alloca i32, align 4
  %10 = alloca i64, align 8
  %11 = alloca %"struct.std::pair", align 8
  store ptr %0, ptr %4, align 8, !tbaa !5
  store i64 %1, ptr %5, align 8, !tbaa !9
  store i64 %2, ptr %6, align 8, !tbaa !9
  %12 = load ptr, ptr %4, align 8
  %13 = getelementptr inbounds %"struct.BaSpaCho::testing_utils::SparseMatGenerator", ptr %12, i32 0, i32 0
  %14 = load i64, ptr %6, align 8, !tbaa !9
  call void @_ZNSt23mersenne_twister_engineImLm32ELm624ELm397ELm31ELm2567483615ELm11ELm4294967295ELm7ELm2636928640ELm15ELm4022730752ELm18ELm1812433253EEC2Em(ptr noundef nonnull align 8 dereferenceable(5000) %13, i64 noundef %14)
  %15 = getelementptr inbounds %"struct.BaSpaCho::testing_utils::SparseMatGenerator", ptr %12, i32 0, i32 1
  %16 = load i64, ptr %5, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 1, ptr %7) #3
  call void @_ZNSaISt3setIlSt4lessIlESaIlEEEC2Ev(ptr noundef nonnull align 1 dereferenceable(1) %7) #3
  invoke void @_ZNSt6vectorISt3setIlSt4lessIlESaIlEESaIS4_EEC2EmRKS5_(ptr noundef nonnull align 8 dereferenceable(24) %15, i64 noundef %16, ptr noundef nonnull align 1 dereferenceable(1) %7)
          to label %17 unwind label %23

17:                                               ; preds = %3
  call void @_ZNSt15__new_allocatorISt3setIlSt4lessIlESaIlEEED2Ev(ptr noundef nonnull align 1 dereferenceable(1) %7) #3
  call void @llvm.lifetime.end.p0(i64 1, ptr %7) #3
  call void @llvm.lifetime.start.p0(i64 8, ptr %10) #3
  store i64 0, ptr %10, align 8, !tbaa !9
  br label %18

18:                                               ; preds = %37, %17
  %19 = load i64, ptr %10, align 8, !tbaa !9
  %20 = load i64, ptr %5, align 8, !tbaa !9
  %21 = icmp slt i64 %19, %20
  br i1 %21, label %27, label %22

22:                                               ; preds = %18
  call void @llvm.lifetime.end.p0(i64 8, ptr %10) #3
  br label %44

23:                                               ; preds = %3
  %24 = landingpad { ptr, i32 }
          cleanup
  %25 = extractvalue { ptr, i32 } %24, 0
  store ptr %25, ptr %8, align 8
  %26 = extractvalue { ptr, i32 } %24, 1
  store i32 %26, ptr %9, align 4
  call void @_ZNSt15__new_allocatorISt3setIlSt4lessIlESaIlEEED2Ev(ptr noundef nonnull align 1 dereferenceable(1) %7) #3
  call void @llvm.lifetime.end.p0(i64 1, ptr %7) #3
  br label %45

27:                                               ; preds = %18
  %28 = getelementptr inbounds %"struct.BaSpaCho::testing_utils::SparseMatGenerator", ptr %12, i32 0, i32 1
  %29 = load i64, ptr %10, align 8, !tbaa !9
  %30 = call noundef nonnull align 8 dereferenceable(48) ptr @_ZNSt6vectorISt3setIlSt4lessIlESaIlEESaIS4_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %28, i64 noundef %29) #3
  %31 = invoke { ptr, i8 } @_ZNSt3setIlSt4lessIlESaIlEE6insertERKl(ptr noundef nonnull align 8 dereferenceable(48) %30, ptr noundef nonnull align 8 dereferenceable(8) %10)
          to label %32 unwind label %40

32:                                               ; preds = %27
  %33 = getelementptr inbounds { ptr, i8 }, ptr %11, i32 0, i32 0
  %34 = extractvalue { ptr, i8 } %31, 0
  store ptr %34, ptr %33, align 8
  %35 = getelementptr inbounds { ptr, i8 }, ptr %11, i32 0, i32 1
  %36 = extractvalue { ptr, i8 } %31, 1
  store i8 %36, ptr %35, align 8
  br label %37

37:                                               ; preds = %32
  %38 = load i64, ptr %10, align 8, !tbaa !9
  %39 = add nsw i64 %38, 1
  store i64 %39, ptr %10, align 8, !tbaa !9
  br label %18, !llvm.loop !11

40:                                               ; preds = %27
  %41 = landingpad { ptr, i32 }
          cleanup
  %42 = extractvalue { ptr, i32 } %41, 0
  store ptr %42, ptr %8, align 8
  %43 = extractvalue { ptr, i32 } %41, 1
  store i32 %43, ptr %9, align 4
  call void @llvm.lifetime.end.p0(i64 8, ptr %10) #3
  call void @_ZNSt6vectorISt3setIlSt4lessIlESaIlEESaIS4_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %15) #3
  br label %45

44:                                               ; preds = %22
  ret void

45:                                               ; preds = %40, %23
  %46 = load ptr, ptr %8, align 8
  %47 = load i32, ptr %9, align 4
  %48 = insertvalue { ptr, i32 } poison, ptr %46, 0
  %49 = insertvalue { ptr, i32 } %48, i32 %47, 1
  resume { ptr, i32 } %49
}

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt23mersenne_twister_engineImLm32ELm624ELm397ELm31ELm2567483615ELm11ELm4294967295ELm7ELm2636928640ELm15ELm4022730752ELm18ELm1812433253EEC2Em(ptr noundef nonnull align 8 dereferenceable(5000), i64 noundef) unnamed_addr #0 align 2

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSaISt3setIlSt4lessIlESaIlEEEC2Ev(ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #2 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt6vectorISt3setIlSt4lessIlESaIlEESaIS4_EEC2EmRKS5_(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef, ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #0 align 2

declare i32 @__gxx_personality_v0(...)

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(48) ptr @_ZNSt6vectorISt3setIlSt4lessIlESaIlEESaIS4_EEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) #2 align 2

; Function Attrs: mustprogress uwtable
declare dso_local { ptr, i8 } @_ZNSt3setIlSt4lessIlESaIlEE6insertERKl(ptr noundef nonnull align 8 dereferenceable(48), ptr noundef nonnull align 8 dereferenceable(8)) #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorISt3setIlSt4lessIlESaIlEESaIS4_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt15__new_allocatorISt3setIlSt4lessIlESaIlEEED2Ev(ptr noundef nonnull align 1 dereferenceable(1)) 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 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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 = { 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 = !{!"long", !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"

%"class.std::allocator" = type { i8 }

; Function Attrs: mustprogress uwtable
define dso_local void @_ZN8BaSpaCho13testing_utils18SparseMatGeneratorC2Ell(ptr noundef nonnull align 8 dereferenceable(5024) %0, i64 noundef %1, i64 noundef %2) unnamed_addr #0 align 2 personality ptr @__gxx_personality_v0 {
  %4 = alloca %"class.std::allocator", align 1
  %5 = alloca i64, align 8
  tail call void @_ZNSt23mersenne_twister_engineImLm32ELm624ELm397ELm31ELm2567483615ELm11ELm4294967295ELm7ELm2636928640ELm15ELm4022730752ELm18ELm1812433253EEC2Em(ptr noundef nonnull align 8 dereferenceable(5000) %0, i64 noundef %2)
  %6 = getelementptr inbounds i8, ptr %0, i64 5000
  call void @llvm.lifetime.start.p0(i64 1, ptr nonnull %4) #3
  call void @_ZNSaISt3setIlSt4lessIlESaIlEEEC2Ev(ptr noundef nonnull align 1 dereferenceable(1) %4) #3
  invoke void @_ZNSt6vectorISt3setIlSt4lessIlESaIlEESaIS4_EEC2EmRKS5_(ptr noundef nonnull align 8 dereferenceable(24) %6, i64 noundef %1, ptr noundef nonnull align 1 dereferenceable(1) %4)
          to label %7 unwind label %9

7:                                                ; preds = %3
  call void @_ZNSt15__new_allocatorISt3setIlSt4lessIlESaIlEEED2Ev(ptr noundef nonnull align 1 dereferenceable(1) %4) #3
  call void @llvm.lifetime.end.p0(i64 1, ptr nonnull %4) #3
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %5) #3
  store i64 0, ptr %5, align 8, !tbaa !5
  %8 = icmp sgt i64 %1, 0
  br i1 %8, label %.lr.ph, label %._crit_edge

._crit_edge:                                      ; preds = %13, %7
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %5) #3
  ret void

9:                                                ; preds = %3
  %10 = landingpad { ptr, i32 }
          cleanup
  call void @_ZNSt15__new_allocatorISt3setIlSt4lessIlESaIlEEED2Ev(ptr noundef nonnull align 1 dereferenceable(1) %4) #3
  call void @llvm.lifetime.end.p0(i64 1, ptr nonnull %4) #3
  br label %19

.lr.ph:                                           ; preds = %7, %13
  %storemerge8 = phi i64 [ %15, %13 ], [ 0, %7 ]
  %11 = call noundef nonnull align 8 dereferenceable(48) ptr @_ZNSt6vectorISt3setIlSt4lessIlESaIlEESaIS4_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %6, i64 noundef %storemerge8) #3
  %12 = invoke { ptr, i8 } @_ZNSt3setIlSt4lessIlESaIlEE6insertERKl(ptr noundef nonnull align 8 dereferenceable(48) %11, ptr noundef nonnull align 8 dereferenceable(8) %5)
          to label %13 unwind label %17

13:                                               ; preds = %.lr.ph
  %14 = load i64, ptr %5, align 8, !tbaa !5
  %15 = add nsw i64 %14, 1
  store i64 %15, ptr %5, align 8, !tbaa !5
  %16 = icmp slt i64 %15, %1
  br i1 %16, label %.lr.ph, label %._crit_edge, !llvm.loop !9

17:                                               ; preds = %.lr.ph
  %18 = landingpad { ptr, i32 }
          cleanup
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %5) #3
  call void @_ZNSt6vectorISt3setIlSt4lessIlESaIlEESaIS4_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %6) #3
  br label %19

19:                                               ; preds = %17, %9
  %.pn = phi { ptr, i32 } [ %18, %17 ], [ %10, %9 ]
  resume { ptr, i32 } %.pn
}

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt23mersenne_twister_engineImLm32ELm624ELm397ELm31ELm2567483615ELm11ELm4294967295ELm7ELm2636928640ELm15ELm4022730752ELm18ELm1812433253EEC2Em(ptr noundef nonnull align 8 dereferenceable(5000), i64 noundef) unnamed_addr #0 align 2

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSaISt3setIlSt4lessIlESaIlEEEC2Ev(ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #2 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt6vectorISt3setIlSt4lessIlESaIlEESaIS4_EEC2EmRKS5_(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef, ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #0 align 2

declare i32 @__gxx_personality_v0(...)

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(48) ptr @_ZNSt6vectorISt3setIlSt4lessIlESaIlEESaIS4_EEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) local_unnamed_addr #2 align 2

; Function Attrs: mustprogress uwtable
declare dso_local { ptr, i8 } @_ZNSt3setIlSt4lessIlESaIlEE6insertERKl(ptr noundef nonnull align 8 dereferenceable(48), ptr noundef nonnull align 8 dereferenceable(8)) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorISt3setIlSt4lessIlESaIlEESaIS4_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt15__new_allocatorISt3setIlSt4lessIlESaIlEEED2Ev(ptr noundef nonnull align 1 dereferenceable(1)) 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 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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 = { 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 = !{!"long", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}


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