; LLVM IR from CerebusOSS/CereLink :: Central/Instrument.ll (ZN10Instrument8OkToSendEv)

; 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.Instrument = type <{ ptr, %class.UDPSocket, [6 x %"class.Instrument::CachedPacket"], i32, i32, i32, [4 x i8], ptr, ptr, i32, [4 x i8] }>
%class.UDPSocket = type <{ ptr, i32, %struct.sockaddr_in, i32, i32, i8, i8, [2 x i8] }>
%struct.sockaddr_in = type { i16, i16, %struct.in_addr, [8 x i8] }
%struct.in_addr = type { i32 }
%"class.Instrument::CachedPacket" = type { i32, i32, i32, i32, i32, [2048 x i8], i32 }

; 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 zeroext i1 @_ZN10Instrument12CachedPacket8OkToSendEv(ptr noundef nonnull align 4 dereferenceable(2072)) #1 align 2

; Function Attrs: mustprogress uwtable
define dso_local noundef zeroext i1 @_ZN10Instrument8OkToSendEv(ptr noundef nonnull align 8 dereferenceable(12516) %0) #2 align 2 {
  %2 = alloca ptr, align 8
  %3 = alloca ptr, align 8
  %4 = alloca ptr, align 8
  store ptr %0, ptr %2, align 8, !tbaa !5
  %5 = load ptr, ptr %2, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr %3) #3
  %6 = getelementptr inbounds %class.Instrument, ptr %5, i32 0, i32 2
  %7 = getelementptr inbounds [6 x %"class.Instrument::CachedPacket"], ptr %6, i64 0, i64 0
  %8 = getelementptr inbounds %"class.Instrument::CachedPacket", ptr %7, i64 6
  store ptr %8, ptr %3, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %4) #3
  %9 = getelementptr inbounds %class.Instrument, ptr %5, i32 0, i32 2
  %10 = getelementptr inbounds [6 x %"class.Instrument::CachedPacket"], ptr %9, i64 0, i64 0
  store ptr %10, ptr %4, align 8, !tbaa !5
  br label %11

11:                                               ; preds = %20, %1
  %12 = load ptr, ptr %4, align 8, !tbaa !5
  %13 = load ptr, ptr %3, align 8, !tbaa !5
  %14 = icmp ne ptr %12, %13
  br i1 %14, label %15, label %23

15:                                               ; preds = %11
  %16 = load ptr, ptr %4, align 8, !tbaa !5
  %17 = call noundef zeroext i1 @_ZN10Instrument12CachedPacket8OkToSendEv(ptr noundef nonnull align 4 dereferenceable(2072) %16)
  br i1 %17, label %18, label %19

18:                                               ; preds = %15
  br label %23

19:                                               ; preds = %15
  br label %20

20:                                               ; preds = %19
  %21 = load ptr, ptr %4, align 8, !tbaa !5
  %22 = getelementptr inbounds %"class.Instrument::CachedPacket", ptr %21, i32 1
  store ptr %22, ptr %4, align 8, !tbaa !5
  br label %11, !llvm.loop !9

23:                                               ; preds = %18, %11
  %24 = load ptr, ptr %4, align 8, !tbaa !5
  %25 = load ptr, ptr %3, align 8, !tbaa !5
  %26 = icmp ne ptr %24, %25
  call void @llvm.lifetime.end.p0(i64 8, ptr %4) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %3) #3
  ret i1 %26
}

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 = { 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 #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 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}


; 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 zeroext i1 @_ZN10Instrument12CachedPacket8OkToSendEv(ptr noundef nonnull align 4 dereferenceable(2072)) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress nounwind uwtable
define dso_local noundef zeroext i1 @_ZN10Instrument8OkToSendEv(ptr noundef nonnull align 8 dereferenceable(12516) %0) local_unnamed_addr #0 align 2 {
  %.0.ptr = getelementptr inbounds i8, ptr %0, i64 48
  %2 = tail call noundef zeroext i1 @_ZN10Instrument12CachedPacket8OkToSendEv(ptr noundef nonnull align 4 dereferenceable(2072) %.0.ptr)
  br i1 %2, label %13, label %3

3:                                                ; preds = %1
  %.0.ptr.1 = getelementptr inbounds i8, ptr %0, i64 2120
  %4 = tail call noundef zeroext i1 @_ZN10Instrument12CachedPacket8OkToSendEv(ptr noundef nonnull align 4 dereferenceable(2072) %.0.ptr.1)
  br i1 %4, label %13, label %5

5:                                                ; preds = %3
  %.0.ptr.2 = getelementptr inbounds i8, ptr %0, i64 4192
  %6 = tail call noundef zeroext i1 @_ZN10Instrument12CachedPacket8OkToSendEv(ptr noundef nonnull align 4 dereferenceable(2072) %.0.ptr.2)
  br i1 %6, label %13, label %7

7:                                                ; preds = %5
  %.0.ptr.3 = getelementptr inbounds i8, ptr %0, i64 6264
  %8 = tail call noundef zeroext i1 @_ZN10Instrument12CachedPacket8OkToSendEv(ptr noundef nonnull align 4 dereferenceable(2072) %.0.ptr.3)
  br i1 %8, label %13, label %9

9:                                                ; preds = %7
  %.0.ptr.4 = getelementptr inbounds i8, ptr %0, i64 8336
  %10 = tail call noundef zeroext i1 @_ZN10Instrument12CachedPacket8OkToSendEv(ptr noundef nonnull align 4 dereferenceable(2072) %.0.ptr.4)
  br i1 %10, label %13, label %11

11:                                               ; preds = %9
  %.0.ptr.5 = getelementptr inbounds i8, ptr %0, i64 10408
  %12 = tail call noundef zeroext i1 @_ZN10Instrument12CachedPacket8OkToSendEv(ptr noundef nonnull align 4 dereferenceable(2072) %.0.ptr.5)
  br label %13

13:                                               ; preds = %11, %9, %7, %5, %3, %1
  %.lcssa = phi i1 [ true, %1 ], [ true, %3 ], [ true, %5 ], [ true, %7 ], [ true, %9 ], [ %12, %11 ]
  ret i1 %.lcssa
}

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)"}


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