; LLVM IR from gem5/gem5 :: ext/systemc/src/sysc/utils/sc_list.ll (ZN7sc_core18sc_plist_base_iter6removeEi)

; 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_iter" = 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: 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_base6removeEPNS_13sc_plist_elemE(ptr noundef nonnull align 8 dereferenceable(16), ptr noundef) #1 align 2

; Function Attrs: mustprogress nounwind uwtable
define dso_local void @_ZN7sc_core18sc_plist_base_iter6removeEi(ptr noundef nonnull align 8 dereferenceable(16) %0, i32 noundef %1) #1 align 2 {
  %3 = alloca ptr, align 8
  %4 = alloca i32, align 4
  %5 = alloca ptr, align 8
  store ptr %0, ptr %3, align 8, !tbaa !5
  store i32 %1, ptr %4, align 4, !tbaa !9
  %6 = load ptr, ptr %3, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr %5) #2
  %7 = load i32, ptr %4, align 4, !tbaa !9
  %8 = icmp eq i32 %7, 1
  br i1 %8, label %9, label %14

9:                                                ; preds = %2
  %10 = getelementptr inbounds %"class.sc_core::sc_plist_base_iter", ptr %6, i32 0, i32 1
  %11 = load ptr, ptr %10, align 8, !tbaa !11
  %12 = getelementptr inbounds %"class.sc_core::sc_plist_elem", ptr %11, i32 0, i32 2
  %13 = load ptr, ptr %12, align 8, !tbaa !13
  br label %19

14:                                               ; preds = %2
  %15 = getelementptr inbounds %"class.sc_core::sc_plist_base_iter", ptr %6, i32 0, i32 1
  %16 = load ptr, ptr %15, align 8, !tbaa !11
  %17 = getelementptr inbounds %"class.sc_core::sc_plist_elem", ptr %16, i32 0, i32 1
  %18 = load ptr, ptr %17, align 8, !tbaa !15
  br label %19

19:                                               ; preds = %14, %9
  %20 = phi ptr [ %13, %9 ], [ %18, %14 ]
  store ptr %20, ptr %5, align 8, !tbaa !5
  %21 = getelementptr inbounds %"class.sc_core::sc_plist_base_iter", ptr %6, i32 0, i32 0
  %22 = load ptr, ptr %21, align 8, !tbaa !16
  %23 = getelementptr inbounds %"class.sc_core::sc_plist_base_iter", ptr %6, i32 0, i32 1
  %24 = load ptr, ptr %23, align 8, !tbaa !11
  %25 = call noundef ptr @_ZN7sc_core13sc_plist_base6removeEPNS_13sc_plist_elemE(ptr noundef nonnull align 8 dereferenceable(16) %22, ptr noundef %24)
  %26 = load ptr, ptr %5, align 8, !tbaa !5
  %27 = getelementptr inbounds %"class.sc_core::sc_plist_base_iter", ptr %6, i32 0, i32 1
  store ptr %26, ptr %27, align 8, !tbaa !11
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #2
  ret void
}

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, !10, i64 0}
!10 = !{!"int", !7, i64 0}
!11 = !{!12, !6, i64 8}
!12 = !{!"_ZTSN7sc_core18sc_plist_base_iterE", !6, i64 0, !6, i64 8}
!13 = !{!14, !6, i64 16}
!14 = !{!"_ZTSN7sc_core13sc_plist_elemE", !6, i64 0, !6, i64 8, !6, i64 16}
!15 = !{!14, !6, i64 8}
!16 = !{!12, !6, 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"

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef ptr @_ZN7sc_core13sc_plist_base6removeEPNS_13sc_plist_elemE(ptr noundef nonnull align 8 dereferenceable(16), ptr noundef) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress nounwind uwtable
define dso_local void @_ZN7sc_core18sc_plist_base_iter6removeEi(ptr nocapture noundef nonnull align 8 dereferenceable(16) %0, i32 noundef %1) local_unnamed_addr #0 align 2 {
  %3 = icmp eq i32 %1, 1
  %4 = getelementptr inbounds i8, ptr %0, i64 8
  %5 = load ptr, ptr %4, align 8
  %.in.v = select i1 %3, i64 16, i64 8
  %.in = getelementptr inbounds i8, ptr %5, i64 %.in.v
  %6 = load ptr, ptr %.in, align 8, !tbaa !5
  %7 = load ptr, ptr %0, align 8, !tbaa !9
  %8 = tail call noundef ptr @_ZN7sc_core13sc_plist_base6removeEPNS_13sc_plist_elemE(ptr noundef nonnull align 8 dereferenceable(16) %7, ptr noundef %5)
  store ptr %6, ptr %4, align 8, !tbaa !11
  ret void
}

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" }

!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_core18sc_plist_base_iterE", !6, i64 0, !6, i64 8}
!11 = !{!10, !6, i64 8}


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