; LLVM IR from achilles288/robot-monitor-graphics :: src/base/internal/context_load.ll (ZN3rmg8internal7PendingD2Ev)

; 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.rmg::internal::Pending" = type { ptr, ptr }
%"struct.rmg::internal::Pending::Shared" = type { i64, i8 }

; Function Attrs: mustprogress nounwind uwtable
define dso_local void @_ZN3rmg8internal7PendingD2Ev(ptr noundef nonnull align 8 dereferenceable(16) %0) unnamed_addr #0 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.rmg::internal::Pending", ptr %3, i32 0, i32 1
  %5 = load ptr, ptr %4, align 8, !tbaa !9
  %6 = icmp eq ptr %5, null
  br i1 %6, label %7, label %8

7:                                                ; preds = %1
  br label %33

8:                                                ; preds = %1
  %9 = getelementptr inbounds %"class.rmg::internal::Pending", ptr %3, i32 0, i32 1
  %10 = load ptr, ptr %9, align 8, !tbaa !9
  %11 = getelementptr inbounds %"struct.rmg::internal::Pending::Shared", ptr %10, i32 0, i32 0
  %12 = load i64, ptr %11, align 8, !tbaa !11
  %13 = add i64 %12, -1
  store i64 %13, ptr %11, align 8, !tbaa !11
  %14 = getelementptr inbounds %"class.rmg::internal::Pending", ptr %3, i32 0, i32 1
  %15 = load ptr, ptr %14, align 8, !tbaa !9
  %16 = getelementptr inbounds %"struct.rmg::internal::Pending::Shared", ptr %15, i32 0, i32 0
  %17 = load i64, ptr %16, align 8, !tbaa !11
  %18 = icmp eq i64 %17, 0
  br i1 %18, label %19, label %33

19:                                               ; preds = %8
  %20 = getelementptr inbounds %"class.rmg::internal::Pending", ptr %3, i32 0, i32 0
  %21 = load ptr, ptr %20, align 8, !tbaa !15
  %22 = icmp eq ptr %21, null
  br i1 %22, label %27, label %23

23:                                               ; preds = %19
  %24 = load ptr, ptr %21, align 8, !tbaa !16
  %25 = getelementptr inbounds ptr, ptr %24, i64 1
  %26 = load ptr, ptr %25, align 8
  call void %26(ptr noundef nonnull align 8 dereferenceable(8) %21) #2
  br label %27

27:                                               ; preds = %23, %19
  %28 = getelementptr inbounds %"class.rmg::internal::Pending", ptr %3, i32 0, i32 1
  %29 = load ptr, ptr %28, align 8, !tbaa !9
  %30 = icmp eq ptr %29, null
  br i1 %30, label %32, label %31

31:                                               ; preds = %27
  call void @_ZdlPvm(ptr noundef %29, i64 noundef 16) #3
  br label %32

32:                                               ; preds = %31, %27
  br label %33

33:                                               ; preds = %32, %8, %7
  ret void
}

; Function Attrs: nobuiltin nounwind
declare void @_ZdlPvm(ptr noundef, i64 noundef) #1

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 = { 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 #2 = { nounwind }
attributes #3 = { 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 = !{!10, !6, i64 8}
!10 = !{!"_ZTSN3rmg8internal7PendingE", !6, i64 0, !6, i64 8}
!11 = !{!12, !13, i64 0}
!12 = !{!"_ZTSN3rmg8internal7Pending6SharedE", !13, i64 0, !14, i64 8}
!13 = !{!"long", !7, i64 0}
!14 = !{!"bool", !7, i64 0}
!15 = !{!10, !6, i64 0}
!16 = !{!17, !17, i64 0}
!17 = !{!"vtable pointer", !8, 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 void @_ZN3rmg8internal7PendingD2Ev(ptr nocapture noundef nonnull readonly align 8 dereferenceable(16) %0) unnamed_addr #0 align 2 {
  %2 = getelementptr inbounds i8, ptr %0, i64 8
  %3 = load ptr, ptr %2, align 8, !tbaa !5
  %4 = icmp eq ptr %3, null
  br i1 %4, label %18, label %5

5:                                                ; preds = %1
  %6 = load i64, ptr %3, align 8, !tbaa !10
  %7 = add i64 %6, -1
  store i64 %7, ptr %3, align 8, !tbaa !10
  %8 = icmp eq i64 %7, 0
  br i1 %8, label %9, label %18

9:                                                ; preds = %5
  %10 = load ptr, ptr %0, align 8, !tbaa !14
  %11 = icmp eq ptr %10, null
  br i1 %11, label %.thread, label %12

12:                                               ; preds = %9
  %13 = load ptr, ptr %10, align 8, !tbaa !15
  %14 = getelementptr inbounds i8, ptr %13, i64 8
  %15 = load ptr, ptr %14, align 8
  tail call void %15(ptr noundef nonnull align 8 dereferenceable(8) %10) #2
  %.pre = load ptr, ptr %2, align 8, !tbaa !5
  %16 = icmp eq ptr %.pre, null
  br i1 %16, label %18, label %.thread

.thread:                                          ; preds = %9, %12
  %17 = phi ptr [ %.pre, %12 ], [ %3, %9 ]
  tail call void @_ZdlPvm(ptr noundef nonnull %17, i64 noundef 16) #3
  br label %18

18:                                               ; preds = %12, %.thread, %1, %5
  ret void
}

; Function Attrs: nobuiltin nounwind
declare void @_ZdlPvm(ptr noundef, i64 noundef) local_unnamed_addr #1

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 = { 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 #2 = { nounwind }
attributes #3 = { 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, !7, i64 8}
!6 = !{!"_ZTSN3rmg8internal7PendingE", !7, i64 0, !7, i64 8}
!7 = !{!"any pointer", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C++ TBAA"}
!10 = !{!11, !12, i64 0}
!11 = !{!"_ZTSN3rmg8internal7Pending6SharedE", !12, i64 0, !13, i64 8}
!12 = !{!"long", !8, i64 0}
!13 = !{!"bool", !8, i64 0}
!14 = !{!6, !7, i64 0}
!15 = !{!16, !16, i64 0}
!16 = !{!"vtable pointer", !9, i64 0}


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