; LLVM IR from glaretechnologies/substrata :: resonance-audio/resonance_audio/utils (buffer_partitioner)

; 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.NullLogger = type { i8 }
%"class.vraudio::BufferPartitioner" = type { i64, i64, %"class.std::function", ptr, i64, %"class.std::vector" }
%"class.std::function" = type { %"class.std::_Function_base", ptr }
%"class.std::_Function_base" = type { %"union.std::_Any_data", ptr }
%"union.std::_Any_data" = type { %"union.std::_Nocopy_types" }
%"union.std::_Nocopy_types" = type { { i64, i64 } }
%"class.std::vector" = type { %"struct.std::_Vector_base" }
%"struct.std::_Vector_base" = type { %"struct.std::_Vector_base<const float *, std::allocator<const float *>>::_Vector_impl" }
%"struct.std::_Vector_base<const float *, std::allocator<const float *>>::_Vector_impl" = type { %"struct.std::_Vector_base<const float *, std::allocator<const float *>>::_Vector_impl_data" }
%"struct.std::_Vector_base<const float *, std::allocator<const float *>>::_Vector_impl_data" = type { ptr, 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 uwtable
declare dso_local void @_ZN7vraudio17BufferPartitioner9AddBufferEPKPKfmm(ptr noundef nonnull align 8 dereferenceable(88), ptr noundef, i64 noundef, i64 noundef) #1 align 2

; Function Attrs: mustprogress uwtable
define dso_local void @_ZN7vraudio17BufferPartitioner9AddBufferEmRKNS_11AudioBufferE(ptr noundef nonnull align 8 dereferenceable(88) %0, i64 noundef %1, ptr noundef nonnull align 8 dereferenceable(68) %2) #1 align 2 {
  %4 = alloca ptr, align 8
  %5 = alloca i64, align 8
  %6 = alloca ptr, align 8
  %7 = alloca %class.NullLogger, align 1
  %8 = alloca %class.NullLogger, align 1
  %9 = alloca i64, align 8
  store ptr %0, ptr %4, align 8, !tbaa !5
  store i64 %1, ptr %5, align 8, !tbaa !9
  store ptr %2, ptr %6, align 8, !tbaa !5
  %10 = load ptr, ptr %4, align 8
  call void @llvm.lifetime.start.p0(i64 1, ptr %7) #3
  %11 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZN10NullLogger9GetStreamEv(ptr noundef nonnull align 1 dereferenceable(1) %7)
  call void @llvm.lifetime.end.p0(i64 1, ptr %7) #3
  call void @llvm.lifetime.start.p0(i64 1, ptr %8) #3
  %12 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZN10NullLogger9GetStreamEv(ptr noundef nonnull align 1 dereferenceable(1) %8)
  call void @llvm.lifetime.end.p0(i64 1, ptr %8) #3
  call void @llvm.lifetime.start.p0(i64 8, ptr %9) #3
  store i64 0, ptr %9, align 8, !tbaa !9
  br label %13

13:                                               ; preds = %27, %3
  %14 = load i64, ptr %9, align 8, !tbaa !9
  %15 = getelementptr inbounds %"class.vraudio::BufferPartitioner", ptr %10, i32 0, i32 0
  %16 = load i64, ptr %15, align 8, !tbaa !11
  %17 = icmp ult i64 %14, %16
  br i1 %17, label %19, label %18

18:                                               ; preds = %13
  call void @llvm.lifetime.end.p0(i64 8, ptr %9) #3
  br label %30

19:                                               ; preds = %13
  %20 = load ptr, ptr %6, align 8, !tbaa !5
  %21 = load i64, ptr %9, align 8, !tbaa !9
  %22 = call noundef nonnull align 8 dereferenceable(17) ptr @_ZNK7vraudio11AudioBufferixEm(ptr noundef nonnull align 8 dereferenceable(68) %20, i64 noundef %21)
  %23 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNK7vraudio11ChannelViewixEm(ptr noundef nonnull align 8 dereferenceable(17) %22, i64 noundef 0)
  %24 = getelementptr inbounds %"class.vraudio::BufferPartitioner", ptr %10, i32 0, i32 5
  %25 = load i64, ptr %9, align 8, !tbaa !9
  %26 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSt6vectorIPKfSaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %24, i64 noundef %25) #3
  store ptr %23, ptr %26, align 8, !tbaa !5
  br label %27

27:                                               ; preds = %19
  %28 = load i64, ptr %9, align 8, !tbaa !9
  %29 = add i64 %28, 1
  store i64 %29, ptr %9, align 8, !tbaa !9
  br label %13, !llvm.loop !19

30:                                               ; preds = %18
  %31 = getelementptr inbounds %"class.vraudio::BufferPartitioner", ptr %10, i32 0, i32 5
  %32 = call noundef ptr @_ZNSt6vectorIPKfSaIS1_EE4dataEv(ptr noundef nonnull align 8 dereferenceable(24) %31) #3
  %33 = load ptr, ptr %6, align 8, !tbaa !5
  %34 = call noundef i64 @_ZNK7vraudio11AudioBuffer12num_channelsEv(ptr noundef nonnull align 8 dereferenceable(68) %33)
  %35 = load i64, ptr %5, align 8, !tbaa !9
  call void @_ZN7vraudio17BufferPartitioner9AddBufferEPKPKfmm(ptr noundef nonnull align 8 dereferenceable(88) %10, ptr noundef %32, i64 noundef %34, i64 noundef %35)
  ret void
}

; Function Attrs: mustprogress uwtable
declare dso_local noundef nonnull align 8 dereferenceable(8) ptr @_ZN10NullLogger9GetStreamEv(ptr noundef nonnull align 1 dereferenceable(1)) #1 align 2

; Function Attrs: mustprogress uwtable
declare dso_local noundef nonnull align 8 dereferenceable(17) ptr @_ZNK7vraudio11AudioBufferixEm(ptr noundef nonnull align 8 dereferenceable(68), i64 noundef) #1 align 2

; Function Attrs: mustprogress uwtable
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZNK7vraudio11ChannelViewixEm(ptr noundef nonnull align 8 dereferenceable(17), i64 noundef) #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(8) ptr @_ZNSt6vectorIPKfSaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef ptr @_ZNSt6vectorIPKfSaIS1_EE4dataEv(ptr noundef nonnull align 8 dereferenceable(24)) #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i64 @_ZNK7vraudio11AudioBuffer12num_channelsEv(ptr noundef nonnull align 8 dereferenceable(68)) #2 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 = { 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 = !{!"long", !7, i64 0}
!11 = !{!12, !10, i64 0}
!12 = !{!"_ZTSN7vraudio17BufferPartitionerE", !10, i64 0, !10, i64 8, !13, i64 16, !6, i64 48, !10, i64 56, !15, i64 64}
!13 = !{!"_ZTSSt8functionIFPN7vraudio11AudioBufferES2_EE", !14, i64 0, !6, i64 24}
!14 = !{!"_ZTSSt14_Function_base", !7, i64 0, !6, i64 16}
!15 = !{!"_ZTSSt6vectorIPKfSaIS1_EE", !16, i64 0}
!16 = !{!"_ZTSSt12_Vector_baseIPKfSaIS1_EE", !17, i64 0}
!17 = !{!"_ZTSNSt12_Vector_baseIPKfSaIS1_EE12_Vector_implE", !18, i64 0}
!18 = !{!"_ZTSNSt12_Vector_baseIPKfSaIS1_EE17_Vector_impl_dataE", !6, i64 0, !6, i64 8, !6, i64 16}
!19 = distinct !{!19, !20}
!20 = !{!"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"

%class.NullLogger = type { i8 }

; 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 uwtable
declare dso_local void @_ZN7vraudio17BufferPartitioner9AddBufferEPKPKfmm(ptr noundef nonnull align 8 dereferenceable(88), ptr noundef, i64 noundef, i64 noundef) local_unnamed_addr #1 align 2

; Function Attrs: mustprogress uwtable
define dso_local void @_ZN7vraudio17BufferPartitioner9AddBufferEmRKNS_11AudioBufferE(ptr noundef nonnull align 8 dereferenceable(88) %0, i64 noundef %1, ptr noundef nonnull align 8 dereferenceable(68) %2) local_unnamed_addr #1 align 2 {
  %4 = alloca %class.NullLogger, align 1
  %5 = alloca %class.NullLogger, align 1
  call void @llvm.lifetime.start.p0(i64 1, ptr nonnull %4) #3
  %6 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZN10NullLogger9GetStreamEv(ptr noundef nonnull align 1 dereferenceable(1) %4)
  call void @llvm.lifetime.end.p0(i64 1, ptr nonnull %4) #3
  call void @llvm.lifetime.start.p0(i64 1, ptr nonnull %5) #3
  %7 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZN10NullLogger9GetStreamEv(ptr noundef nonnull align 1 dereferenceable(1) %5)
  call void @llvm.lifetime.end.p0(i64 1, ptr nonnull %5) #3
  %8 = load i64, ptr %0, align 8, !tbaa !5
  %.not = icmp eq i64 %8, 0
  br i1 %.not, label %._crit_edge, label %.lr.ph

.lr.ph:                                           ; preds = %3
  %9 = getelementptr inbounds i8, ptr %0, i64 64
  br label %13

._crit_edge:                                      ; preds = %13, %3
  %10 = getelementptr inbounds i8, ptr %0, i64 64
  %11 = call noundef ptr @_ZNSt6vectorIPKfSaIS1_EE4dataEv(ptr noundef nonnull align 8 dereferenceable(24) %10) #3
  %12 = call noundef i64 @_ZNK7vraudio11AudioBuffer12num_channelsEv(ptr noundef nonnull align 8 dereferenceable(68) %2)
  call void @_ZN7vraudio17BufferPartitioner9AddBufferEPKPKfmm(ptr noundef nonnull align 8 dereferenceable(88) %0, ptr noundef %11, i64 noundef %12, i64 noundef %1)
  ret void

13:                                               ; preds = %.lr.ph, %13
  %.07 = phi i64 [ 0, %.lr.ph ], [ %17, %13 ]
  %14 = call noundef nonnull align 8 dereferenceable(17) ptr @_ZNK7vraudio11AudioBufferixEm(ptr noundef nonnull align 8 dereferenceable(68) %2, i64 noundef %.07)
  %15 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNK7vraudio11ChannelViewixEm(ptr noundef nonnull align 8 dereferenceable(17) %14, i64 noundef 0)
  %16 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSt6vectorIPKfSaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %9, i64 noundef %.07) #3
  store ptr %15, ptr %16, align 8, !tbaa !17
  %17 = add nuw i64 %.07, 1
  %18 = load i64, ptr %0, align 8, !tbaa !5
  %19 = icmp ult i64 %17, %18
  br i1 %19, label %13, label %._crit_edge, !llvm.loop !18
}

; Function Attrs: mustprogress uwtable
declare dso_local noundef nonnull align 8 dereferenceable(8) ptr @_ZN10NullLogger9GetStreamEv(ptr noundef nonnull align 1 dereferenceable(1)) local_unnamed_addr #1 align 2

; Function Attrs: mustprogress uwtable
declare dso_local noundef nonnull align 8 dereferenceable(17) ptr @_ZNK7vraudio11AudioBufferixEm(ptr noundef nonnull align 8 dereferenceable(68), i64 noundef) local_unnamed_addr #1 align 2

; Function Attrs: mustprogress uwtable
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZNK7vraudio11ChannelViewixEm(ptr noundef nonnull align 8 dereferenceable(17), i64 noundef) local_unnamed_addr #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(8) ptr @_ZNSt6vectorIPKfSaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) local_unnamed_addr #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef ptr @_ZNSt6vectorIPKfSaIS1_EE4dataEv(ptr noundef nonnull align 8 dereferenceable(24)) local_unnamed_addr #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i64 @_ZNK7vraudio11AudioBuffer12num_channelsEv(ptr noundef nonnull align 8 dereferenceable(68)) local_unnamed_addr #2 align 2

attributes #0 = { mustprogress 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 = { 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, !7, i64 0}
!6 = !{!"_ZTSN7vraudio17BufferPartitionerE", !7, i64 0, !7, i64 8, !10, i64 16, !12, i64 48, !7, i64 56, !13, i64 64}
!7 = !{!"long", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C++ TBAA"}
!10 = !{!"_ZTSSt8functionIFPN7vraudio11AudioBufferES2_EE", !11, i64 0, !12, i64 24}
!11 = !{!"_ZTSSt14_Function_base", !8, i64 0, !12, i64 16}
!12 = !{!"any pointer", !8, i64 0}
!13 = !{!"_ZTSSt6vectorIPKfSaIS1_EE", !14, i64 0}
!14 = !{!"_ZTSSt12_Vector_baseIPKfSaIS1_EE", !15, i64 0}
!15 = !{!"_ZTSNSt12_Vector_baseIPKfSaIS1_EE12_Vector_implE", !16, i64 0}
!16 = !{!"_ZTSNSt12_Vector_baseIPKfSaIS1_EE17_Vector_impl_dataE", !12, i64 0, !12, i64 8, !12, i64 16}
!17 = !{!12, !12, i64 0}
!18 = distinct !{!18, !19}
!19 = !{!"llvm.loop.mustprogress"}


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