; LLVM IR from weicao/cascadb :: src/tree/msg.ll (ZNK7cascadb3Msg4sizeEv)

; 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.cascadb::Msg" = type { i32, [4 x i8], %"class.cascadb::Slice", %"class.cascadb::Slice" }
%"class.cascadb::Slice" = type <{ ptr, i32, [4 x i8] }>

; Function Attrs: mustprogress uwtable
define dso_local noundef i64 @_ZNK7cascadb3Msg4sizeEv(ptr noundef nonnull align 8 dereferenceable(40) %0) #0 align 2 {
  %2 = alloca ptr, align 8
  %3 = alloca i64, align 8
  store ptr %0, ptr %2, align 8, !tbaa !5
  %4 = load ptr, ptr %2, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr %3) #3
  %5 = getelementptr inbounds %"class.cascadb::Msg", ptr %4, i32 0, i32 2
  %6 = call noundef i64 @_ZNK7cascadb5Slice4sizeEv(ptr noundef nonnull align 8 dereferenceable(12) %5)
  %7 = add i64 5, %6
  store i64 %7, ptr %3, align 8, !tbaa !9
  %8 = getelementptr inbounds %"class.cascadb::Msg", ptr %4, i32 0, i32 0
  %9 = load i32, ptr %8, align 8, !tbaa !11
  %10 = icmp eq i32 %9, 1
  br i1 %10, label %11, label %17

11:                                               ; preds = %1
  %12 = getelementptr inbounds %"class.cascadb::Msg", ptr %4, i32 0, i32 3
  %13 = call noundef i64 @_ZNK7cascadb5Slice4sizeEv(ptr noundef nonnull align 8 dereferenceable(12) %12)
  %14 = add i64 4, %13
  %15 = load i64, ptr %3, align 8, !tbaa !9
  %16 = add i64 %15, %14
  store i64 %16, ptr %3, align 8, !tbaa !9
  br label %17

17:                                               ; preds = %11, %1
  %18 = load i64, ptr %3, align 8, !tbaa !9
  call void @llvm.lifetime.end.p0(i64 8, ptr %3) #3
  ret i64 %18
}

; 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 noundef i64 @_ZNK7cascadb5Slice4sizeEv(ptr noundef nonnull align 8 dereferenceable(12)) #2 align 2

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

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 = !{!12, !13, i64 0}
!12 = !{!"_ZTSN7cascadb3MsgE", !13, i64 0, !14, i64 8, !14, i64 24}
!13 = !{!"_ZTSN7cascadb7MsgTypeE", !7, i64 0}
!14 = !{!"_ZTSN7cascadb5SliceE", !6, i64 0, !15, i64 8}
!15 = !{!"int", !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"

; Function Attrs: mustprogress nounwind uwtable
define dso_local noundef i64 @_ZNK7cascadb3Msg4sizeEv(ptr noundef nonnull align 8 dereferenceable(40) %0) local_unnamed_addr #0 align 2 {
  %2 = getelementptr inbounds i8, ptr %0, i64 8
  %3 = tail call noundef i64 @_ZNK7cascadb5Slice4sizeEv(ptr noundef nonnull align 8 dereferenceable(12) %2)
  %4 = add i64 %3, 5
  %5 = load i32, ptr %0, align 8, !tbaa !5
  %6 = icmp eq i32 %5, 1
  br i1 %6, label %7, label %12

7:                                                ; preds = %1
  %8 = getelementptr inbounds i8, ptr %0, i64 24
  %9 = tail call noundef i64 @_ZNK7cascadb5Slice4sizeEv(ptr noundef nonnull align 8 dereferenceable(12) %8)
  %10 = add i64 %3, 9
  %11 = add i64 %10, %9
  br label %12

12:                                               ; preds = %7, %1
  %.0 = phi i64 [ %11, %7 ], [ %4, %1 ]
  ret i64 %.0
}

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i64 @_ZNK7cascadb5Slice4sizeEv(ptr noundef nonnull align 8 dereferenceable(12)) local_unnamed_addr #0 align 2

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, !7, i64 0}
!6 = !{!"_ZTSN7cascadb3MsgE", !7, i64 0, !10, i64 8, !10, i64 24}
!7 = !{!"_ZTSN7cascadb7MsgTypeE", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C++ TBAA"}
!10 = !{!"_ZTSN7cascadb5SliceE", !11, i64 0, !12, i64 8}
!11 = !{!"any pointer", !8, i64 0}
!12 = !{!"int", !8, i64 0}


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