; LLVM IR from Deborah-Digges/mark-sweep-simulation :: 01-marksweep-simple/vm.ll (ZN2VM8pushPairEv)

; 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.VM = type <{ %"class.std::deque", ptr, %"class.std::queue", i32, i32, i32, [4 x i8] }>
%"class.std::deque" = type { %"class.std::_Deque_base" }
%"class.std::_Deque_base" = type { %"struct.std::_Deque_base<Object *, std::allocator<Object *>>::_Deque_impl" }
%"struct.std::_Deque_base<Object *, std::allocator<Object *>>::_Deque_impl" = type { %"struct.std::_Deque_base<Object *, std::allocator<Object *>>::_Deque_impl_data" }
%"struct.std::_Deque_base<Object *, std::allocator<Object *>>::_Deque_impl_data" = type { ptr, i64, %"struct.std::_Deque_iterator", %"struct.std::_Deque_iterator" }
%"struct.std::_Deque_iterator" = type { ptr, ptr, ptr, ptr }
%"class.std::queue" = type { %"class.std::deque" }
%struct.Object = type { i32, i32, ptr, %union.anon }
%union.anon = type { %struct.anon }
%struct.anon = type { ptr, ptr }

@.str = external hidden unnamed_addr constant [38 x i8], align 1

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: mustprogress uwtable
declare dso_local noundef ptr @_ZN2VM12createObjectE10ObjectType(ptr noundef nonnull align 8 dereferenceable(180), i32 noundef) #1 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt5dequeIP6ObjectSaIS1_EE9push_backERKS1_(ptr noundef nonnull align 8 dereferenceable(80), ptr noundef nonnull align 8 dereferenceable(8)) #1 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZN2VM24checkAllocationThresholdEv(ptr noundef nonnull align 8 dereferenceable(180)) #1 align 2

; 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 ptr @_ZN2VM8pushPairEv(ptr noundef nonnull align 8 dereferenceable(180) %0) #1 align 2 {
  %2 = alloca ptr, align 8
  %3 = alloca ptr, align 8
  store ptr %0, ptr %2, align 8, !tbaa !5
  %4 = load ptr, ptr %2, align 8
  %5 = getelementptr inbounds %class.VM, ptr %4, i32 0, i32 3
  %6 = load i32, ptr %5, align 8, !tbaa !9
  %7 = icmp sge i32 %6, 2
  %8 = zext i1 %7 to i32
  call void @_Z6assertiPKc(i32 noundef %8, ptr noundef @.str)
  call void @llvm.lifetime.start.p0(i64 8, ptr %3) #4
  %9 = call noundef ptr @_ZN2VM12createObjectE10ObjectType(ptr noundef nonnull align 8 dereferenceable(180) %4, i32 noundef 1)
  store ptr %9, ptr %3, align 8, !tbaa !5
  %10 = getelementptr inbounds %class.VM, ptr %4, i32 0, i32 0
  %11 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSt5dequeIP6ObjectSaIS1_EE4backEv(ptr noundef nonnull align 8 dereferenceable(80) %10) #4
  %12 = load ptr, ptr %11, align 8, !tbaa !5
  %13 = load ptr, ptr %3, align 8, !tbaa !5
  %14 = getelementptr inbounds %struct.Object, ptr %13, i32 0, i32 3
  %15 = getelementptr inbounds %struct.anon, ptr %14, i32 0, i32 1
  store ptr %12, ptr %15, align 8, !tbaa !19
  %16 = getelementptr inbounds %class.VM, ptr %4, i32 0, i32 0
  call void @_ZNSt5dequeIP6ObjectSaIS1_EE8pop_backEv(ptr noundef nonnull align 8 dereferenceable(80) %16) #4
  %17 = getelementptr inbounds %class.VM, ptr %4, i32 0, i32 0
  %18 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSt5dequeIP6ObjectSaIS1_EE4backEv(ptr noundef nonnull align 8 dereferenceable(80) %17) #4
  %19 = load ptr, ptr %18, align 8, !tbaa !5
  %20 = load ptr, ptr %3, align 8, !tbaa !5
  %21 = getelementptr inbounds %struct.Object, ptr %20, i32 0, i32 3
  %22 = getelementptr inbounds %struct.anon, ptr %21, i32 0, i32 0
  store ptr %19, ptr %22, align 8, !tbaa !19
  %23 = getelementptr inbounds %class.VM, ptr %4, i32 0, i32 0
  call void @_ZNSt5dequeIP6ObjectSaIS1_EE8pop_backEv(ptr noundef nonnull align 8 dereferenceable(80) %23) #4
  %24 = getelementptr inbounds %class.VM, ptr %4, i32 0, i32 0
  call void @_ZNSt5dequeIP6ObjectSaIS1_EE9push_backERKS1_(ptr noundef nonnull align 8 dereferenceable(80) %24, ptr noundef nonnull align 8 dereferenceable(8) %3)
  call void @_ZN2VM24checkAllocationThresholdEv(ptr noundef nonnull align 8 dereferenceable(180) %4)
  %25 = load ptr, ptr %3, align 8, !tbaa !5
  call void @llvm.lifetime.end.p0(i64 8, ptr %3) #4
  ret ptr %25
}

declare void @_Z6assertiPKc(i32 noundef, ptr noundef) #2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(8) ptr @_ZNSt5dequeIP6ObjectSaIS1_EE4backEv(ptr noundef nonnull align 8 dereferenceable(80)) #3 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt5dequeIP6ObjectSaIS1_EE8pop_backEv(ptr noundef nonnull align 8 dereferenceable(80)) #3 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 = { "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 = { 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, !18, i64 168}
!10 = !{!"_ZTS2VM", !11, i64 0, !6, i64 80, !17, i64 88, !18, i64 168, !18, i64 172, !18, i64 176}
!11 = !{!"_ZTSSt5dequeIP6ObjectSaIS1_EE", !12, i64 0}
!12 = !{!"_ZTSSt11_Deque_baseIP6ObjectSaIS1_EE", !13, i64 0}
!13 = !{!"_ZTSNSt11_Deque_baseIP6ObjectSaIS1_EE11_Deque_implE", !14, i64 0}
!14 = !{!"_ZTSNSt11_Deque_baseIP6ObjectSaIS1_EE16_Deque_impl_dataE", !6, i64 0, !15, i64 8, !16, i64 16, !16, i64 48}
!15 = !{!"long", !7, i64 0}
!16 = !{!"_ZTSSt15_Deque_iteratorIP6ObjectRS1_PS1_E", !6, i64 0, !6, i64 8, !6, i64 16, !6, i64 24}
!17 = !{!"_ZTSSt5queueIP6ObjectSt5dequeIS1_SaIS1_EEE", !11, i64 0}
!18 = !{!"int", !7, i64 0}
!19 = !{!7, !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"

@.str = external hidden unnamed_addr constant [38 x i8], align 1

; 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 uwtable
declare dso_local noundef ptr @_ZN2VM12createObjectE10ObjectType(ptr noundef nonnull align 8 dereferenceable(180), i32 noundef) local_unnamed_addr #1 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt5dequeIP6ObjectSaIS1_EE9push_backERKS1_(ptr noundef nonnull align 8 dereferenceable(80), ptr noundef nonnull align 8 dereferenceable(8)) local_unnamed_addr #1 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZN2VM24checkAllocationThresholdEv(ptr noundef nonnull align 8 dereferenceable(180)) local_unnamed_addr #1 align 2

; 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 noundef ptr @_ZN2VM8pushPairEv(ptr noundef nonnull align 8 dereferenceable(180) %0) local_unnamed_addr #1 align 2 {
  %2 = alloca ptr, align 8
  %3 = getelementptr inbounds i8, ptr %0, i64 168
  %4 = load i32, ptr %3, align 8, !tbaa !5
  %5 = icmp sgt i32 %4, 1
  %6 = zext i1 %5 to i32
  tail call void @_Z6assertiPKc(i32 noundef %6, ptr noundef nonnull @.str)
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %2) #4
  %7 = tail call noundef ptr @_ZN2VM12createObjectE10ObjectType(ptr noundef nonnull align 8 dereferenceable(180) %0, i32 noundef 1)
  store ptr %7, ptr %2, align 8, !tbaa !18
  %8 = tail call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSt5dequeIP6ObjectSaIS1_EE4backEv(ptr noundef nonnull align 8 dereferenceable(80) %0) #4
  %9 = load ptr, ptr %8, align 8, !tbaa !18
  %10 = getelementptr inbounds i8, ptr %7, i64 24
  store ptr %9, ptr %10, align 8, !tbaa !19
  tail call void @_ZNSt5dequeIP6ObjectSaIS1_EE8pop_backEv(ptr noundef nonnull align 8 dereferenceable(80) %0) #4
  %11 = tail call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSt5dequeIP6ObjectSaIS1_EE4backEv(ptr noundef nonnull align 8 dereferenceable(80) %0) #4
  %12 = load ptr, ptr %11, align 8, !tbaa !18
  %13 = getelementptr inbounds i8, ptr %7, i64 16
  store ptr %12, ptr %13, align 8, !tbaa !19
  tail call void @_ZNSt5dequeIP6ObjectSaIS1_EE8pop_backEv(ptr noundef nonnull align 8 dereferenceable(80) %0) #4
  call void @_ZNSt5dequeIP6ObjectSaIS1_EE9push_backERKS1_(ptr noundef nonnull align 8 dereferenceable(80) %0, ptr noundef nonnull align 8 dereferenceable(8) %2)
  call void @_ZN2VM24checkAllocationThresholdEv(ptr noundef nonnull align 8 dereferenceable(180) %0)
  %14 = load ptr, ptr %2, align 8, !tbaa !18
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %2) #4
  ret ptr %14
}

declare void @_Z6assertiPKc(i32 noundef, ptr noundef) local_unnamed_addr #2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(8) ptr @_ZNSt5dequeIP6ObjectSaIS1_EE4backEv(ptr noundef nonnull align 8 dereferenceable(80)) local_unnamed_addr #3 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt5dequeIP6ObjectSaIS1_EE8pop_backEv(ptr noundef nonnull align 8 dereferenceable(80)) local_unnamed_addr #3 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 = { "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 = { 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, !17, i64 168}
!6 = !{!"_ZTS2VM", !7, i64 0, !11, i64 80, !16, i64 88, !17, i64 168, !17, i64 172, !17, i64 176}
!7 = !{!"_ZTSSt5dequeIP6ObjectSaIS1_EE", !8, i64 0}
!8 = !{!"_ZTSSt11_Deque_baseIP6ObjectSaIS1_EE", !9, i64 0}
!9 = !{!"_ZTSNSt11_Deque_baseIP6ObjectSaIS1_EE11_Deque_implE", !10, i64 0}
!10 = !{!"_ZTSNSt11_Deque_baseIP6ObjectSaIS1_EE16_Deque_impl_dataE", !11, i64 0, !14, i64 8, !15, i64 16, !15, i64 48}
!11 = !{!"any pointer", !12, i64 0}
!12 = !{!"omnipotent char", !13, i64 0}
!13 = !{!"Simple C++ TBAA"}
!14 = !{!"long", !12, i64 0}
!15 = !{!"_ZTSSt15_Deque_iteratorIP6ObjectRS1_PS1_E", !11, i64 0, !11, i64 8, !11, i64 16, !11, i64 24}
!16 = !{!"_ZTSSt5queueIP6ObjectSt5dequeIS1_SaIS1_EEE", !7, i64 0}
!17 = !{!"int", !12, i64 0}
!18 = !{!11, !11, i64 0}
!19 = !{!12, !12, i64 0}


; Effective O3 passes: EarlyCSEPass,GVNPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,SROAPass,TailCallElimPass