; LLVM IR from gem5/gem5 :: ext/systemc/src/sysc/utils (sc_list)

; 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.sc_core::sc_plist_base" = type { ptr, ptr }
%"class.sc_core::sc_plist_elem" = type { ptr, ptr, ptr }

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

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZN7sc_core13sc_plist_elemD2Ev(ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZN7sc_core13sc_plist_elemdlEPvm(ptr noundef, i64 noundef) #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 nounwind uwtable
declare dso_local noundef ptr @_ZN7sc_core13sc_plist_base8pop_backEv(ptr noundef nonnull align 8 dereferenceable(16)) #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef ptr @_ZN7sc_core13sc_plist_base9pop_frontEv(ptr noundef nonnull align 8 dereferenceable(16)) #1 align 2

; Function Attrs: mustprogress nounwind uwtable
define dso_local noundef ptr @_ZN7sc_core13sc_plist_base6removeEPNS_13sc_plist_elemE(ptr noundef nonnull align 8 dereferenceable(16) %0, ptr noundef %1) #1 align 2 {
  %3 = alloca ptr, align 8
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  %6 = alloca ptr, align 8
  store ptr %0, ptr %4, align 8, !tbaa !5
  store ptr %1, ptr %5, align 8, !tbaa !5
  %7 = load ptr, ptr %4, align 8
  %8 = load ptr, ptr %5, align 8, !tbaa !5
  %9 = getelementptr inbounds %"class.sc_core::sc_plist_base", ptr %7, i32 0, i32 0
  %10 = load ptr, ptr %9, align 8, !tbaa !9
  %11 = icmp eq ptr %8, %10
  br i1 %11, label %12, label %14

12:                                               ; preds = %2
  %13 = call noundef ptr @_ZN7sc_core13sc_plist_base9pop_frontEv(ptr noundef nonnull align 8 dereferenceable(16) %7)
  store ptr %13, ptr %3, align 8
  br label %44

14:                                               ; preds = %2
  %15 = load ptr, ptr %5, align 8, !tbaa !5
  %16 = getelementptr inbounds %"class.sc_core::sc_plist_base", ptr %7, i32 0, i32 1
  %17 = load ptr, ptr %16, align 8, !tbaa !11
  %18 = icmp eq ptr %15, %17
  br i1 %18, label %19, label %21

19:                                               ; preds = %14
  %20 = call noundef ptr @_ZN7sc_core13sc_plist_base8pop_backEv(ptr noundef nonnull align 8 dereferenceable(16) %7)
  store ptr %20, ptr %3, align 8
  br label %44

21:                                               ; preds = %14
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #2
  %22 = load ptr, ptr %5, align 8, !tbaa !5
  %23 = getelementptr inbounds %"class.sc_core::sc_plist_elem", ptr %22, i32 0, i32 0
  %24 = load ptr, ptr %23, align 8, !tbaa !12
  store ptr %24, ptr %6, align 8, !tbaa !5
  %25 = load ptr, ptr %5, align 8, !tbaa !5
  %26 = getelementptr inbounds %"class.sc_core::sc_plist_elem", ptr %25, i32 0, i32 2
  %27 = load ptr, ptr %26, align 8, !tbaa !14
  %28 = load ptr, ptr %5, align 8, !tbaa !5
  %29 = getelementptr inbounds %"class.sc_core::sc_plist_elem", ptr %28, i32 0, i32 1
  %30 = load ptr, ptr %29, align 8, !tbaa !15
  %31 = getelementptr inbounds %"class.sc_core::sc_plist_elem", ptr %30, i32 0, i32 2
  store ptr %27, ptr %31, align 8, !tbaa !14
  %32 = load ptr, ptr %5, align 8, !tbaa !5
  %33 = getelementptr inbounds %"class.sc_core::sc_plist_elem", ptr %32, i32 0, i32 1
  %34 = load ptr, ptr %33, align 8, !tbaa !15
  %35 = load ptr, ptr %5, align 8, !tbaa !5
  %36 = getelementptr inbounds %"class.sc_core::sc_plist_elem", ptr %35, i32 0, i32 2
  %37 = load ptr, ptr %36, align 8, !tbaa !14
  %38 = getelementptr inbounds %"class.sc_core::sc_plist_elem", ptr %37, i32 0, i32 1
  store ptr %34, ptr %38, align 8, !tbaa !15
  %39 = load ptr, ptr %5, align 8, !tbaa !5
  %40 = icmp eq ptr %39, null
  br i1 %40, label %42, label %41

41:                                               ; preds = %21
  call void @_ZN7sc_core13sc_plist_elemD2Ev(ptr noundef nonnull align 8 dereferenceable(24) %39) #2
  call void @_ZN7sc_core13sc_plist_elemdlEPvm(ptr noundef %39, i64 noundef 24) #2
  br label %42

42:                                               ; preds = %41, %21
  %43 = load ptr, ptr %6, align 8, !tbaa !5
  store ptr %43, ptr %3, align 8
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #2
  br label %44

44:                                               ; preds = %42, %19, %12
  %45 = load ptr, ptr %3, align 8
  ret ptr %45
}

attributes #0 = { 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 = { 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 0}
!10 = !{!"_ZTSN7sc_core13sc_plist_baseE", !6, i64 0, !6, i64 8}
!11 = !{!10, !6, i64 8}
!12 = !{!13, !6, i64 0}
!13 = !{!"_ZTSN7sc_core13sc_plist_elemE", !6, i64 0, !6, i64 8, !6, i64 16}
!14 = !{!13, !6, i64 16}
!15 = !{!13, !6, i64 8}


; 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 nounwind uwtable
declare dso_local void @_ZN7sc_core13sc_plist_elemD2Ev(ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZN7sc_core13sc_plist_elemdlEPvm(ptr noundef, i64 noundef) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef ptr @_ZN7sc_core13sc_plist_base8pop_backEv(ptr noundef nonnull align 8 dereferenceable(16)) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef ptr @_ZN7sc_core13sc_plist_base9pop_frontEv(ptr noundef nonnull align 8 dereferenceable(16)) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress nounwind uwtable
define dso_local noundef ptr @_ZN7sc_core13sc_plist_base6removeEPNS_13sc_plist_elemE(ptr noundef nonnull align 8 dereferenceable(16) %0, ptr noundef %1) local_unnamed_addr #0 align 2 {
  %3 = load ptr, ptr %0, align 8, !tbaa !5
  %4 = icmp eq ptr %3, %1
  br i1 %4, label %5, label %7

5:                                                ; preds = %2
  %6 = tail call noundef ptr @_ZN7sc_core13sc_plist_base9pop_frontEv(ptr noundef nonnull align 8 dereferenceable(16) %0)
  br label %21

7:                                                ; preds = %2
  %8 = getelementptr inbounds i8, ptr %0, i64 8
  %9 = load ptr, ptr %8, align 8, !tbaa !10
  %10 = icmp eq ptr %9, %1
  br i1 %10, label %11, label %13

11:                                               ; preds = %7
  %12 = tail call noundef ptr @_ZN7sc_core13sc_plist_base8pop_backEv(ptr noundef nonnull align 8 dereferenceable(16) %0)
  br label %21

13:                                               ; preds = %7
  %14 = load ptr, ptr %1, align 8, !tbaa !11
  %15 = getelementptr inbounds i8, ptr %1, i64 16
  %16 = load ptr, ptr %15, align 8, !tbaa !13
  %17 = getelementptr inbounds i8, ptr %1, i64 8
  %18 = load ptr, ptr %17, align 8, !tbaa !14
  %19 = getelementptr inbounds i8, ptr %18, i64 16
  store ptr %16, ptr %19, align 8, !tbaa !13
  %20 = getelementptr inbounds i8, ptr %16, i64 8
  store ptr %18, ptr %20, align 8, !tbaa !14
  tail call void @_ZN7sc_core13sc_plist_elemD2Ev(ptr noundef nonnull align 8 dereferenceable(24) %1) #1
  tail call void @_ZN7sc_core13sc_plist_elemdlEPvm(ptr noundef nonnull %1, i64 noundef 24) #1
  br label %21

21:                                               ; preds = %13, %11, %5
  %.0 = phi ptr [ %6, %5 ], [ %12, %11 ], [ %14, %13 ]
  ret ptr %.0
}

attributes #0 = { 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 #1 = { 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, !7, i64 0}
!6 = !{!"_ZTSN7sc_core13sc_plist_baseE", !7, i64 0, !7, i64 8}
!7 = !{!"any pointer", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C++ TBAA"}
!10 = !{!6, !7, i64 8}
!11 = !{!12, !7, i64 0}
!12 = !{!"_ZTSN7sc_core13sc_plist_elemE", !7, i64 0, !7, i64 8, !7, i64 16}
!13 = !{!12, !7, i64 16}
!14 = !{!12, !7, i64 8}


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