; LLVM IR from erwincoumans/tiny-differentiable-simulator :: third_party/zeromq/src/msg.ll (ZN3zmq5msg_t14reset_metadataEv)

; 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.zmq::msg_t" = type { %union.anon }
%union.anon = type { %struct.anon }
%struct.anon = type { ptr, [34 x i8], i8, i8, [16 x i8], i32 }

declare noundef zeroext i1 @_ZN3zmq10metadata_t8drop_refEv(ptr noundef nonnull align 8 dereferenceable(56)) #0

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local void @_ZN3zmq10metadata_tD2Ev(ptr noundef nonnull align 8 dereferenceable(56)) unnamed_addr #1 align 2

; Function Attrs: nobuiltin nounwind
declare void @_ZdlPvm(ptr noundef, i64 noundef) #2

; Function Attrs: mustprogress uwtable
define dso_local void @_ZN3zmq5msg_t14reset_metadataEv(ptr noundef nonnull align 8 dereferenceable(64) %0) #3 align 2 {
  %2 = alloca ptr, align 8
  store ptr %0, ptr %2, align 8, !tbaa !5
  %3 = load ptr, ptr %2, align 8
  %4 = getelementptr inbounds %"class.zmq::msg_t", ptr %3, i32 0, i32 0
  %5 = getelementptr inbounds %struct.anon, ptr %4, i32 0, i32 0
  %6 = load ptr, ptr %5, align 8, !tbaa !9
  %7 = icmp ne ptr %6, null
  br i1 %7, label %8, label %25

8:                                                ; preds = %1
  %9 = getelementptr inbounds %"class.zmq::msg_t", ptr %3, i32 0, i32 0
  %10 = getelementptr inbounds %struct.anon, ptr %9, i32 0, i32 0
  %11 = load ptr, ptr %10, align 8, !tbaa !9
  %12 = call noundef zeroext i1 @_ZN3zmq10metadata_t8drop_refEv(ptr noundef nonnull align 8 dereferenceable(56) %11)
  br i1 %12, label %13, label %22

13:                                               ; preds = %8
  %14 = getelementptr inbounds %"class.zmq::msg_t", ptr %3, i32 0, i32 0
  %15 = getelementptr inbounds %struct.anon, ptr %14, i32 0, i32 0
  %16 = load ptr, ptr %15, align 8, !tbaa !9
  %17 = icmp eq ptr %16, null
  br i1 %17, label %19, label %18

18:                                               ; preds = %13
  call void @_ZN3zmq10metadata_tD2Ev(ptr noundef nonnull align 8 dereferenceable(56) %16) #4
  call void @_ZdlPvm(ptr noundef %16, i64 noundef 56) #5
  br label %19

19:                                               ; preds = %18, %13
  %20 = getelementptr inbounds %"class.zmq::msg_t", ptr %3, i32 0, i32 0
  %21 = getelementptr inbounds %struct.anon, ptr %20, i32 0, i32 0
  store ptr null, ptr %21, align 8, !tbaa !9
  br label %22

22:                                               ; preds = %19, %8
  %23 = getelementptr inbounds %"class.zmq::msg_t", ptr %3, i32 0, i32 0
  %24 = getelementptr inbounds %struct.anon, ptr %23, i32 0, i32 0
  store ptr null, ptr %24, align 8, !tbaa !9
  br label %25

25:                                               ; preds = %22, %1
  ret void
}

attributes #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 = { inlinehint 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 = { nobuiltin nounwind "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 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 }
attributes #5 = { builtin 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 = !{!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"

declare noundef zeroext i1 @_ZN3zmq10metadata_t8drop_refEv(ptr noundef nonnull align 8 dereferenceable(56)) local_unnamed_addr #0

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local void @_ZN3zmq10metadata_tD2Ev(ptr noundef nonnull align 8 dereferenceable(56)) unnamed_addr #1 align 2

; Function Attrs: nobuiltin nounwind
declare void @_ZdlPvm(ptr noundef, i64 noundef) local_unnamed_addr #2

; Function Attrs: mustprogress uwtable
define dso_local void @_ZN3zmq5msg_t14reset_metadataEv(ptr nocapture noundef nonnull align 8 dereferenceable(64) %0) local_unnamed_addr #3 align 2 {
  %2 = load ptr, ptr %0, align 8, !tbaa !5
  %.not = icmp eq ptr %2, null
  br i1 %.not, label %10, label %3

3:                                                ; preds = %1
  %4 = tail call noundef zeroext i1 @_ZN3zmq10metadata_t8drop_refEv(ptr noundef nonnull align 8 dereferenceable(56) %2)
  br i1 %4, label %5, label %9

5:                                                ; preds = %3
  %6 = load ptr, ptr %0, align 8, !tbaa !5
  %7 = icmp eq ptr %6, null
  br i1 %7, label %9, label %8

8:                                                ; preds = %5
  tail call void @_ZN3zmq10metadata_tD2Ev(ptr noundef nonnull align 8 dereferenceable(56) %6) #4
  tail call void @_ZdlPvm(ptr noundef nonnull %6, i64 noundef 56) #5
  br label %9

9:                                                ; preds = %5, %8, %3
  store ptr null, ptr %0, align 8, !tbaa !5
  br label %10

10:                                               ; preds = %9, %1
  ret void
}

attributes #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 = { inlinehint 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 = { nobuiltin nounwind "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 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 }
attributes #5 = { builtin 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 = !{!"omnipotent char", !7, i64 0}
!7 = !{!"Simple C++ TBAA"}


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