; LLVM IR from modlfo/AudioEngine :: AudioEngine/JuceLibraryCode/juce_events.ll (ZNK4juce10MultiTimer11getCallbackEi)

; 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.juce::MultiTimer" = type { ptr, %"class.juce::SpinLock", %"class.juce::OwnedArray" }
%"class.juce::SpinLock" = type { %"class.juce::Atomic" }
%"class.juce::Atomic" = type { i32, [4 x i8] }
%"class.juce::OwnedArray" = type { %"class.juce::ArrayAllocationBase.25", i32, [4 x i8] }
%"class.juce::ArrayAllocationBase.25" = type <{ %"class.juce::HeapBlock.26", i32, [4 x i8] }>
%"class.juce::HeapBlock.26" = type { ptr }
%"struct.juce::MultiTimerCallback" = type <{ %"class.juce::Timer", ptr, i32, [4 x i8] }>
%"class.juce::Timer" = type { ptr, i32, i32, ptr, ptr }

; 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
define dso_local noundef ptr @_ZNK4juce10MultiTimer11getCallbackEi(ptr noundef nonnull align 8 dereferenceable(40) %0, i32 noundef %1) #1 align 2 {
  %3 = alloca ptr, align 8
  %4 = alloca ptr, align 8
  %5 = alloca i32, align 4
  %6 = alloca i32, align 4
  %7 = alloca i32, align 4
  %8 = alloca ptr, align 8
  store ptr %0, ptr %4, align 8, !tbaa !5
  store i32 %1, ptr %5, align 4, !tbaa !9
  %9 = load ptr, ptr %4, align 8
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #3
  %10 = getelementptr inbounds %"class.juce::MultiTimer", ptr %9, i32 0, i32 2
  %11 = call noundef i32 @_ZNK4juce10OwnedArrayINS_5TimerENS_20DummyCriticalSectionEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(20) %10) #3
  store i32 %11, ptr %6, align 4, !tbaa !9
  br label %12

12:                                               ; preds = %31, %2
  %13 = load i32, ptr %6, align 4, !tbaa !9
  %14 = add nsw i32 %13, -1
  store i32 %14, ptr %6, align 4, !tbaa !9
  %15 = icmp sge i32 %14, 0
  br i1 %15, label %17, label %16

16:                                               ; preds = %12
  store i32 2, ptr %7, align 4
  br label %32

17:                                               ; preds = %12
  call void @llvm.lifetime.start.p0(i64 8, ptr %8) #3
  %18 = getelementptr inbounds %"class.juce::MultiTimer", ptr %9, i32 0, i32 2
  %19 = load i32, ptr %6, align 4, !tbaa !9
  %20 = call noundef ptr @_ZNK4juce10OwnedArrayINS_5TimerENS_20DummyCriticalSectionEE12getUncheckedEi(ptr noundef nonnull align 8 dereferenceable(20) %18, i32 noundef %19) #3
  store ptr %20, ptr %8, align 8, !tbaa !5
  %21 = load ptr, ptr %8, align 8, !tbaa !5
  %22 = getelementptr inbounds %"struct.juce::MultiTimerCallback", ptr %21, i32 0, i32 2
  %23 = load i32, ptr %22, align 8, !tbaa !11
  %24 = load i32, ptr %5, align 4, !tbaa !9
  %25 = icmp eq i32 %23, %24
  br i1 %25, label %26, label %28

26:                                               ; preds = %17
  %27 = load ptr, ptr %8, align 8, !tbaa !5
  store ptr %27, ptr %3, align 8
  store i32 1, ptr %7, align 4
  br label %29

28:                                               ; preds = %17
  store i32 0, ptr %7, align 4
  br label %29

29:                                               ; preds = %28, %26
  call void @llvm.lifetime.end.p0(i64 8, ptr %8) #3
  %30 = load i32, ptr %7, align 4
  switch i32 %30, label %32 [
    i32 0, label %31
  ]

31:                                               ; preds = %29
  br label %12, !llvm.loop !14

32:                                               ; preds = %29, %16
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #3
  %33 = load i32, ptr %7, align 4
  switch i32 %33, label %37 [
    i32 2, label %34
    i32 1, label %35
  ]

34:                                               ; preds = %32
  store ptr null, ptr %3, align 8
  br label %35

35:                                               ; preds = %34, %32
  %36 = load ptr, ptr %3, align 8
  ret ptr %36

37:                                               ; preds = %32
  unreachable
}

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef i32 @_ZNK4juce10OwnedArrayINS_5TimerENS_20DummyCriticalSectionEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(20)) #2 align 2

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef ptr @_ZNK4juce10OwnedArrayINS_5TimerENS_20DummyCriticalSectionEE12getUncheckedEi(ptr noundef nonnull align 8 dereferenceable(20), i32 noundef) #2 align 2

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 = { 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 = !{!"any pointer", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"int", !7, i64 0}
!11 = !{!12, !10, i64 40}
!12 = !{!"_ZTSN4juce18MultiTimerCallbackE", !13, i64 0, !6, i64 32, !10, i64 40}
!13 = !{!"_ZTSN4juce5TimerE", !10, i64 8, !10, i64 12, !6, i64 16, !6, i64 24}
!14 = distinct !{!14, !15}
!15 = !{!"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
define dso_local noundef ptr @_ZNK4juce10MultiTimer11getCallbackEi(ptr noundef nonnull align 8 dereferenceable(40) %0, i32 noundef %1) local_unnamed_addr #0 align 2 {
  %3 = getelementptr inbounds i8, ptr %0, i64 16
  %4 = tail call noundef i32 @_ZNK4juce10OwnedArrayINS_5TimerENS_20DummyCriticalSectionEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(20) %3) #2
  br label %5

5:                                                ; preds = %7, %2
  %.010 = phi i32 [ %4, %2 ], [ %8, %7 ]
  %6 = icmp slt i32 %.010, 1
  br i1 %6, label %12, label %7

7:                                                ; preds = %5
  %8 = add nsw i32 %.010, -1
  %9 = tail call noundef ptr @_ZNK4juce10OwnedArrayINS_5TimerENS_20DummyCriticalSectionEE12getUncheckedEi(ptr noundef nonnull align 8 dereferenceable(20) %3, i32 noundef %8) #2
  %10 = getelementptr inbounds i8, ptr %9, i64 40
  %11 = load i32, ptr %10, align 8, !tbaa !5
  %.not = icmp eq i32 %11, %1
  br i1 %.not, label %12, label %5, !llvm.loop !12

12:                                               ; preds = %5, %7
  %spec.select = phi ptr [ %9, %7 ], [ null, %5 ]
  ret ptr %spec.select
}

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef i32 @_ZNK4juce10OwnedArrayINS_5TimerENS_20DummyCriticalSectionEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(20)) local_unnamed_addr #1 align 2

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef ptr @_ZNK4juce10OwnedArrayINS_5TimerENS_20DummyCriticalSectionEE12getUncheckedEi(ptr noundef nonnull align 8 dereferenceable(20), i32 noundef) local_unnamed_addr #1 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" }
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 = { 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, !8, i64 40}
!6 = !{!"_ZTSN4juce18MultiTimerCallbackE", !7, i64 0, !11, i64 32, !8, i64 40}
!7 = !{!"_ZTSN4juce5TimerE", !8, i64 8, !8, i64 12, !11, i64 16, !11, i64 24}
!8 = !{!"int", !9, i64 0}
!9 = !{!"omnipotent char", !10, i64 0}
!10 = !{!"Simple C++ TBAA"}
!11 = !{!"any pointer", !9, i64 0}
!12 = distinct !{!12, !13}
!13 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: CorrelatedValuePropagationPass,EarlyCSEPass,GlobalOptPass,IPSCCPPass,InferFunctionAttrsPass,InstCombinePass,SROAPass,SimplifyCFGPass,TailCallElimPass