; LLVM IR from modlfo/AudioEngine :: AudioEngine/JuceLibraryCode/juce_audio_basics.ll (ZNK4juce13MPEInstrument10getNotePtrEii)

; 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::MPEInstrument" = type { ptr, %"class.juce::CriticalSection", %"class.juce::Array.61", %"class.juce::MPEZoneLayout", %"class.juce::ListenerList.66", [16 x i8], [16 x i8], [16 x i8], %"struct.juce::MPEInstrument::LegacyMode", %"struct.juce::MPEInstrument::MPEDimension", %"struct.juce::MPEInstrument::MPEDimension", %"struct.juce::MPEInstrument::MPEDimension" }
%"class.juce::CriticalSection" = type { %union.pthread_mutex_t }
%union.pthread_mutex_t = type { %struct.__pthread_mutex_s }
%struct.__pthread_mutex_s = type { i32, i32, i32, i32, i32, i16, i16, %struct.__pthread_internal_list }
%struct.__pthread_internal_list = type { ptr, ptr }
%"class.juce::Array.61" = type { %"class.juce::ArrayAllocationBase.62", i32, [4 x i8] }
%"class.juce::ArrayAllocationBase.62" = type <{ %"class.juce::HeapBlock.63", i32, [4 x i8] }>
%"class.juce::HeapBlock.63" = type { ptr }
%"class.juce::MPEZoneLayout" = type { %"class.juce::Array.51", %"class.juce::MidiRPNDetector", %"class.juce::ListenerList" }
%"class.juce::Array.51" = type { %"class.juce::ArrayAllocationBase.52", i32, [4 x i8] }
%"class.juce::ArrayAllocationBase.52" = type <{ %"class.juce::HeapBlock.53", i32, [4 x i8] }>
%"class.juce::HeapBlock.53" = type { ptr }
%"class.juce::MidiRPNDetector" = type { [16 x %"struct.juce::MidiRPNDetector::ChannelState"] }
%"struct.juce::MidiRPNDetector::ChannelState" = type { i8, i8, i8, i8, i8 }
%"class.juce::ListenerList" = type { %"class.juce::Array.56" }
%"class.juce::Array.56" = type { %"class.juce::ArrayAllocationBase.57", i32, [4 x i8] }
%"class.juce::ArrayAllocationBase.57" = type <{ %"class.juce::HeapBlock.58", i32, [4 x i8] }>
%"class.juce::HeapBlock.58" = type { ptr }
%"class.juce::ListenerList.66" = type { %"class.juce::Array.67" }
%"class.juce::Array.67" = type { %"class.juce::ArrayAllocationBase.68", i32, [4 x i8] }
%"class.juce::ArrayAllocationBase.68" = type <{ %"class.juce::HeapBlock.69", i32, [4 x i8] }>
%"class.juce::HeapBlock.69" = type { ptr }
%"struct.juce::MPEInstrument::LegacyMode" = type { i8, %"class.juce::Range.50", i32 }
%"class.juce::Range.50" = type { i32, i32 }
%"struct.juce::MPEInstrument::MPEDimension" = type { i32, [16 x %"class.juce::MPEValue"], i64 }
%"class.juce::MPEValue" = type { i32 }
%"struct.juce::MPENote" = type <{ i16, i8, i8, %"class.juce::MPEValue", %"class.juce::MPEValue", %"class.juce::MPEValue", %"class.juce::MPEValue", %"class.juce::MPEValue", double, i32, [4 x i8] }>

; 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: inlinehint mustprogress nounwind uwtable
declare dso_local noundef i32 @_ZNK4juce5ArrayINS_7MPENoteENS_20DummyCriticalSectionELi0EE4sizeEv(ptr noundef nonnull align 8 dereferenceable(20)) #1 align 2

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(36) ptr @_ZNK4juce5ArrayINS_7MPENoteENS_20DummyCriticalSectionELi0EE12getReferenceEi(ptr noundef nonnull align 8 dereferenceable(20), i32 noundef) #1 align 2

; Function Attrs: mustprogress nounwind uwtable
define dso_local noundef ptr @_ZNK4juce13MPEInstrument10getNotePtrEii(ptr noundef nonnull align 8 dereferenceable(528) %0, i32 noundef %1, i32 noundef %2) #2 align 2 {
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  %6 = alloca i32, align 4
  %7 = alloca i32, align 4
  %8 = alloca i32, align 4
  %9 = alloca i32, align 4
  %10 = alloca ptr, align 8
  store ptr %0, ptr %5, align 8, !tbaa !5
  store i32 %1, ptr %6, align 4, !tbaa !9
  store i32 %2, ptr %7, align 4, !tbaa !9
  %11 = load ptr, ptr %5, align 8
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #3
  store i32 0, ptr %8, align 4, !tbaa !9
  br label %12

12:                                               ; preds = %41, %3
  %13 = load i32, ptr %8, align 4, !tbaa !9
  %14 = getelementptr inbounds %"class.juce::MPEInstrument", ptr %11, i32 0, i32 2
  %15 = call noundef i32 @_ZNK4juce5ArrayINS_7MPENoteENS_20DummyCriticalSectionELi0EE4sizeEv(ptr noundef nonnull align 8 dereferenceable(20) %14) #3
  %16 = icmp slt i32 %13, %15
  br i1 %16, label %18, label %17

17:                                               ; preds = %12
  store i32 2, ptr %9, align 4
  br label %44

18:                                               ; preds = %12
  call void @llvm.lifetime.start.p0(i64 8, ptr %10) #3
  %19 = getelementptr inbounds %"class.juce::MPEInstrument", ptr %11, i32 0, i32 2
  %20 = load i32, ptr %8, align 4, !tbaa !9
  %21 = call noundef nonnull align 8 dereferenceable(36) ptr @_ZNK4juce5ArrayINS_7MPENoteENS_20DummyCriticalSectionELi0EE12getReferenceEi(ptr noundef nonnull align 8 dereferenceable(20) %19, i32 noundef %20) #3
  store ptr %21, ptr %10, align 8, !tbaa !5
  %22 = load ptr, ptr %10, align 8, !tbaa !5
  %23 = getelementptr inbounds %"struct.juce::MPENote", ptr %22, i32 0, i32 1
  %24 = load i8, ptr %23, align 2, !tbaa !11
  %25 = zext i8 %24 to i32
  %26 = load i32, ptr %6, align 4, !tbaa !9
  %27 = icmp eq i32 %25, %26
  br i1 %27, label %28, label %37

28:                                               ; preds = %18
  %29 = load ptr, ptr %10, align 8, !tbaa !5
  %30 = getelementptr inbounds %"struct.juce::MPENote", ptr %29, i32 0, i32 2
  %31 = load i8, ptr %30, align 1, !tbaa !17
  %32 = zext i8 %31 to i32
  %33 = load i32, ptr %7, align 4, !tbaa !9
  %34 = icmp eq i32 %32, %33
  br i1 %34, label %35, label %37

35:                                               ; preds = %28
  %36 = load ptr, ptr %10, align 8, !tbaa !5
  store ptr %36, ptr %4, align 8
  store i32 1, ptr %9, align 4
  br label %38

37:                                               ; preds = %28, %18
  store i32 0, ptr %9, align 4
  br label %38

38:                                               ; preds = %37, %35
  call void @llvm.lifetime.end.p0(i64 8, ptr %10) #3
  %39 = load i32, ptr %9, align 4
  switch i32 %39, label %44 [
    i32 0, label %40
  ]

40:                                               ; preds = %38
  br label %41

41:                                               ; preds = %40
  %42 = load i32, ptr %8, align 4, !tbaa !9
  %43 = add nsw i32 %42, 1
  store i32 %43, ptr %8, align 4, !tbaa !9
  br label %12, !llvm.loop !18

44:                                               ; preds = %38, %17
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #3
  %45 = load i32, ptr %9, align 4
  switch i32 %45, label %49 [
    i32 2, label %46
    i32 1, label %47
  ]

46:                                               ; preds = %44
  store ptr null, ptr %4, align 8
  br label %47

47:                                               ; preds = %46, %44
  %48 = load ptr, ptr %4, align 8
  ret ptr %48

49:                                               ; preds = %44
  unreachable
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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 = { 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, !7, i64 2}
!12 = !{!"_ZTSN4juce7MPENoteE", !13, i64 0, !7, i64 2, !7, i64 3, !14, i64 4, !14, i64 8, !14, i64 12, !14, i64 16, !14, i64 20, !15, i64 24, !16, i64 32}
!13 = !{!"short", !7, i64 0}
!14 = !{!"_ZTSN4juce8MPEValueE", !10, i64 0}
!15 = !{!"double", !7, i64 0}
!16 = !{!"_ZTSN4juce7MPENote8KeyStateE", !7, i64 0}
!17 = !{!12, !7, i64 3}
!18 = distinct !{!18, !19}
!19 = !{!"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: inlinehint mustprogress nounwind uwtable
declare dso_local noundef i32 @_ZNK4juce5ArrayINS_7MPENoteENS_20DummyCriticalSectionELi0EE4sizeEv(ptr noundef nonnull align 8 dereferenceable(20)) local_unnamed_addr #0 align 2

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(36) ptr @_ZNK4juce5ArrayINS_7MPENoteENS_20DummyCriticalSectionELi0EE12getReferenceEi(ptr noundef nonnull align 8 dereferenceable(20), i32 noundef) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress nounwind uwtable
define dso_local noundef ptr @_ZNK4juce13MPEInstrument10getNotePtrEii(ptr noundef nonnull align 8 dereferenceable(528) %0, i32 noundef %1, i32 noundef %2) local_unnamed_addr #1 align 2 {
  %4 = getelementptr inbounds i8, ptr %0, i64 48
  %5 = tail call noundef i32 @_ZNK4juce5ArrayINS_7MPENoteENS_20DummyCriticalSectionELi0EE4sizeEv(ptr noundef nonnull align 8 dereferenceable(20) %4) #2
  %.not20 = icmp sgt i32 %5, 0
  br i1 %.not20, label %.lr.ph, label %._crit_edge

6:                                                ; preds = %.lr.ph
  %7 = add nuw nsw i32 %.01321, 1
  %8 = tail call noundef i32 @_ZNK4juce5ArrayINS_7MPENoteENS_20DummyCriticalSectionELi0EE4sizeEv(ptr noundef nonnull align 8 dereferenceable(20) %4) #2
  %.not = icmp slt i32 %7, %8
  br i1 %.not, label %.lr.ph, label %._crit_edge, !llvm.loop !5

.lr.ph:                                           ; preds = %3, %6
  %.01321 = phi i32 [ %7, %6 ], [ 0, %3 ]
  %9 = tail call noundef nonnull align 8 dereferenceable(36) ptr @_ZNK4juce5ArrayINS_7MPENoteENS_20DummyCriticalSectionELi0EE12getReferenceEi(ptr noundef nonnull align 8 dereferenceable(20) %4, i32 noundef %.01321) #2
  %10 = getelementptr inbounds i8, ptr %9, i64 2
  %11 = load i8, ptr %10, align 2, !tbaa !7
  %12 = zext i8 %11 to i32
  %13 = icmp ne i32 %12, %1
  %14 = getelementptr inbounds i8, ptr %9, i64 3
  %15 = load i8, ptr %14, align 1
  %16 = zext i8 %15 to i32
  %17 = icmp ne i32 %16, %2
  %or.cond.not = select i1 %13, i1 true, i1 %17
  br i1 %or.cond.not, label %6, label %._crit_edge

._crit_edge:                                      ; preds = %.lr.ph, %6, %3
  %spec.select = phi ptr [ null, %3 ], [ null, %6 ], [ %9, %.lr.ph ]
  ret ptr %spec.select
}

attributes #0 = { 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 #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 = { 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 = distinct !{!5, !6}
!6 = !{!"llvm.loop.mustprogress"}
!7 = !{!8, !10, i64 2}
!8 = !{!"_ZTSN4juce7MPENoteE", !9, i64 0, !10, i64 2, !10, i64 3, !12, i64 4, !12, i64 8, !12, i64 12, !12, i64 16, !12, i64 20, !14, i64 24, !15, i64 32}
!9 = !{!"short", !10, i64 0}
!10 = !{!"omnipotent char", !11, i64 0}
!11 = !{!"Simple C++ TBAA"}
!12 = !{!"_ZTSN4juce8MPEValueE", !13, i64 0}
!13 = !{!"int", !10, i64 0}
!14 = !{!"double", !10, i64 0}
!15 = !{!"_ZTSN4juce7MPENote8KeyStateE", !10, i64 0}


; Effective O3 passes: CorrelatedValuePropagationPass,EarlyCSEPass,GlobalOptPass,IPSCCPPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LICMPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,SROAPass,SimplifyCFGPass,TailCallElimPass