; LLVM IR from CerebusOSS/CereLink :: Central/Instrument.ll (ZN10Instrument11GetSendModeEv)

; 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 uwtable
define dso_local noundef i32 @_ZN10Instrument11GetSendModeEv(ptr noundef nonnull align 8 dereferenceable(12516) %0) #1 align 2 {
  %2 = alloca ptr, align 8
  %3 = alloca i32, align 4
  %4 = alloca ptr, align 8
  %5 = alloca i32, align 4
  store ptr %0, ptr %2, align 8, !tbaa !5
  %6 = load ptr, ptr %2, align 8
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #4
  store i32 0, ptr %3, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %4) #4
  %7 = getelementptr inbounds %class.Instrument, ptr %6, i32 0, i32 2
  %8 = getelementptr inbounds [6 x %"class.Instrument::CachedPacket"], ptr %7, i64 0, i64 0
  store ptr %8, ptr %4, align 8, !tbaa !5
  br label %9

9:                                                ; preds = %21, %1
  %10 = load ptr, ptr %4, align 8, !tbaa !5
  %11 = getelementptr inbounds %class.Instrument, ptr %6, i32 0, i32 2
  %12 = getelementptr inbounds [6 x %"class.Instrument::CachedPacket"], ptr %11, i64 0, i64 0
  %13 = getelementptr inbounds %"class.Instrument::CachedPacket", ptr %12, i64 6
  %14 = icmp ne ptr %10, %13
  br i1 %14, label %16, label %15

15:                                               ; preds = %9
  call void @llvm.lifetime.end.p0(i64 8, ptr %4) #4
  br label %24

16:                                               ; preds = %9
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #4
  %17 = load ptr, ptr %4, align 8, !tbaa !5
  %18 = call noundef i32 @_ZN10Instrument12CachedPacket7GetModeEv(ptr noundef nonnull align 4 dereferenceable(2072) %17)
  store i32 %18, ptr %5, align 4, !tbaa !9
  %19 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZSt3maxIN10Instrument8ModeTypeEERKT_S4_S4_(ptr noundef nonnull align 4 dereferenceable(4) %3, ptr noundef nonnull align 4 dereferenceable(4) %5)
  %20 = load i32, ptr %19, align 4, !tbaa !9
  store i32 %20, ptr %3, align 4, !tbaa !9
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #4
  br label %21

21:                                               ; preds = %16
  %22 = load ptr, ptr %4, align 8, !tbaa !5
  %23 = getelementptr inbounds %"class.Instrument::CachedPacket", ptr %22, i32 1
  store ptr %23, ptr %4, align 8, !tbaa !5
  br label %9, !llvm.loop !11

24:                                               ; preds = %15
  %25 = load i32, ptr %3, align 4, !tbaa !9
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #4
  ret i32 %25
}

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZSt3maxIN10Instrument8ModeTypeEERKT_S4_S4_(ptr noundef nonnull align 4 dereferenceable(4), ptr noundef nonnull align 4 dereferenceable(4)) #2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i32 @_ZN10Instrument12CachedPacket7GetModeEv(ptr noundef nonnull align 4 dereferenceable(2072)) #3 align 2

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { 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 #2 = { 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 #3 = { 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 #4 = { 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 = !{!"_ZTSN10Instrument8ModeTypeE", !7, i64 0}
!11 = distinct !{!11, !12}
!12 = !{!"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 nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: mustprogress nounwind uwtable
define dso_local noundef i32 @_ZN10Instrument11GetSendModeEv(ptr noundef nonnull align 8 dereferenceable(12516) %0) local_unnamed_addr #1 align 2 {
  %2 = alloca i32, align 4
  %3 = alloca i32, align 4
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %2) #3
  store i32 0, ptr %2, align 4, !tbaa !5
  %.0.ptr = getelementptr inbounds i8, ptr %0, i64 48
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %3) #3
  %4 = tail call noundef i32 @_ZN10Instrument12CachedPacket7GetModeEv(ptr noundef nonnull align 4 dereferenceable(2072) %.0.ptr)
  store i32 %4, ptr %3, align 4, !tbaa !5
  %5 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZSt3maxIN10Instrument8ModeTypeEERKT_S4_S4_(ptr noundef nonnull align 4 dereferenceable(4) %2, ptr noundef nonnull align 4 dereferenceable(4) %3)
  %6 = load i32, ptr %5, align 4, !tbaa !5
  store i32 %6, ptr %2, align 4, !tbaa !5
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %3) #3
  %.0.ptr.1 = getelementptr inbounds i8, ptr %0, i64 2120
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %3) #3
  %7 = call noundef i32 @_ZN10Instrument12CachedPacket7GetModeEv(ptr noundef nonnull align 4 dereferenceable(2072) %.0.ptr.1)
  store i32 %7, ptr %3, align 4, !tbaa !5
  %8 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZSt3maxIN10Instrument8ModeTypeEERKT_S4_S4_(ptr noundef nonnull align 4 dereferenceable(4) %2, ptr noundef nonnull align 4 dereferenceable(4) %3)
  %9 = load i32, ptr %8, align 4, !tbaa !5
  store i32 %9, ptr %2, align 4, !tbaa !5
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %3) #3
  %.0.ptr.2 = getelementptr inbounds i8, ptr %0, i64 4192
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %3) #3
  %10 = call noundef i32 @_ZN10Instrument12CachedPacket7GetModeEv(ptr noundef nonnull align 4 dereferenceable(2072) %.0.ptr.2)
  store i32 %10, ptr %3, align 4, !tbaa !5
  %11 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZSt3maxIN10Instrument8ModeTypeEERKT_S4_S4_(ptr noundef nonnull align 4 dereferenceable(4) %2, ptr noundef nonnull align 4 dereferenceable(4) %3)
  %12 = load i32, ptr %11, align 4, !tbaa !5
  store i32 %12, ptr %2, align 4, !tbaa !5
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %3) #3
  %.0.ptr.3 = getelementptr inbounds i8, ptr %0, i64 6264
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %3) #3
  %13 = call noundef i32 @_ZN10Instrument12CachedPacket7GetModeEv(ptr noundef nonnull align 4 dereferenceable(2072) %.0.ptr.3)
  store i32 %13, ptr %3, align 4, !tbaa !5
  %14 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZSt3maxIN10Instrument8ModeTypeEERKT_S4_S4_(ptr noundef nonnull align 4 dereferenceable(4) %2, ptr noundef nonnull align 4 dereferenceable(4) %3)
  %15 = load i32, ptr %14, align 4, !tbaa !5
  store i32 %15, ptr %2, align 4, !tbaa !5
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %3) #3
  %.0.ptr.4 = getelementptr inbounds i8, ptr %0, i64 8336
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %3) #3
  %16 = call noundef i32 @_ZN10Instrument12CachedPacket7GetModeEv(ptr noundef nonnull align 4 dereferenceable(2072) %.0.ptr.4)
  store i32 %16, ptr %3, align 4, !tbaa !5
  %17 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZSt3maxIN10Instrument8ModeTypeEERKT_S4_S4_(ptr noundef nonnull align 4 dereferenceable(4) %2, ptr noundef nonnull align 4 dereferenceable(4) %3)
  %18 = load i32, ptr %17, align 4, !tbaa !5
  store i32 %18, ptr %2, align 4, !tbaa !5
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %3) #3
  %.0.ptr.5 = getelementptr inbounds i8, ptr %0, i64 10408
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %3) #3
  %19 = call noundef i32 @_ZN10Instrument12CachedPacket7GetModeEv(ptr noundef nonnull align 4 dereferenceable(2072) %.0.ptr.5)
  store i32 %19, ptr %3, align 4, !tbaa !5
  %20 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZSt3maxIN10Instrument8ModeTypeEERKT_S4_S4_(ptr noundef nonnull align 4 dereferenceable(4) %2, ptr noundef nonnull align 4 dereferenceable(4) %3)
  %21 = load i32, ptr %20, align 4, !tbaa !5
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %3) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %2) #3
  ret i32 %21
}

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZSt3maxIN10Instrument8ModeTypeEERKT_S4_S4_(ptr noundef nonnull align 4 dereferenceable(4), ptr noundef nonnull align 4 dereferenceable(4)) local_unnamed_addr #2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i32 @_ZN10Instrument12CachedPacket7GetModeEv(ptr noundef nonnull align 4 dereferenceable(2072)) local_unnamed_addr #1 align 2

attributes #0 = { mustprogress 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 = { 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 #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 = !{!"_ZTSN10Instrument8ModeTypeE", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}


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