; LLVM IR from kdrag0n/fxdsp :: effects/parametric_eq.ll (ZN5fxdsp18ParametricEqEffect15reserve_filtersEi)

; 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.__gnu_cxx::__normal_iterator.23" = type { ptr }
%"class.fxdsp::ParametricEqEffect" = type <{ %"class.fxdsp::Effect.base", [7 x i8], %"class.std::vector.0", i32, [4 x i8] }>
%"class.fxdsp::Effect.base" = type <{ %"class.fxdsp::AudioSink", ptr, i8 }>
%"class.fxdsp::AudioSink" = type { ptr, %"class.std::vector", i32, i32 }
%"class.std::vector" = type { %"struct.std::_Vector_base" }
%"struct.std::_Vector_base" = type { %"struct.std::_Vector_base<std::vector<float>, std::allocator<std::vector<float>>>::_Vector_impl" }
%"struct.std::_Vector_base<std::vector<float>, std::allocator<std::vector<float>>>::_Vector_impl" = type { %"struct.std::_Vector_base<std::vector<float>, std::allocator<std::vector<float>>>::_Vector_impl_data" }
%"struct.std::_Vector_base<std::vector<float>, std::allocator<std::vector<float>>>::_Vector_impl_data" = type { ptr, ptr, ptr }
%"class.std::vector.0" = type { %"struct.std::_Vector_base.1" }
%"struct.std::_Vector_base.1" = type { %"struct.std::_Vector_base<std::vector<std::unique_ptr<fxdsp::BiquadFilter>>, std::allocator<std::vector<std::unique_ptr<fxdsp::BiquadFilter>>>>::_Vector_impl" }
%"struct.std::_Vector_base<std::vector<std::unique_ptr<fxdsp::BiquadFilter>>, std::allocator<std::vector<std::unique_ptr<fxdsp::BiquadFilter>>>>::_Vector_impl" = type { %"struct.std::_Vector_base<std::vector<std::unique_ptr<fxdsp::BiquadFilter>>, std::allocator<std::vector<std::unique_ptr<fxdsp::BiquadFilter>>>>::_Vector_impl_data" }
%"struct.std::_Vector_base<std::vector<std::unique_ptr<fxdsp::BiquadFilter>>, std::allocator<std::vector<std::unique_ptr<fxdsp::BiquadFilter>>>>::_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 nounwind uwtable
declare dso_local ptr @_ZNSt6vectorIS_ISt10unique_ptrIN5fxdsp12BiquadFilterESt14default_deleteIS2_EESaIS5_EESaIS7_EE5beginEv(ptr noundef nonnull align 8 dereferenceable(24)) #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZNSt6vectorIS_ISt10unique_ptrIN5fxdsp12BiquadFilterESt14default_deleteIS2_EESaIS5_EESaIS7_EE3endEv(ptr noundef nonnull align 8 dereferenceable(24)) #1 align 2

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef zeroext i1 @_ZN9__gnu_cxxneIPSt6vectorISt10unique_ptrIN5fxdsp12BiquadFilterESt14default_deleteIS4_EESaIS7_EES1_IS9_SaIS9_EEEEbRKNS_17__normal_iteratorIT_T0_EESI_(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef nonnull align 8 dereferenceable(8)) #2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(24) ptr @_ZNK9__gnu_cxx17__normal_iteratorIPSt6vectorISt10unique_ptrIN5fxdsp12BiquadFilterESt14default_deleteIS4_EESaIS7_EES1_IS9_SaIS9_EEEdeEv(ptr noundef nonnull align 8 dereferenceable(8)) #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(8) ptr @_ZN9__gnu_cxx17__normal_iteratorIPSt6vectorISt10unique_ptrIN5fxdsp12BiquadFilterESt14default_deleteIS4_EESaIS7_EES1_IS9_SaIS9_EEEppEv(ptr noundef nonnull align 8 dereferenceable(8)) #1 align 2

; Function Attrs: mustprogress uwtable
define dso_local void @_ZN5fxdsp18ParametricEqEffect15reserve_filtersEi(ptr noundef nonnull align 8 dereferenceable(84) %0, i32 noundef %1) #3 align 2 {
  %3 = alloca ptr, align 8
  %4 = alloca i32, align 4
  %5 = alloca ptr, align 8
  %6 = alloca %"class.__gnu_cxx::__normal_iterator.23", align 8
  %7 = alloca %"class.__gnu_cxx::__normal_iterator.23", align 8
  %8 = alloca ptr, align 8
  store ptr %0, ptr %3, align 8, !tbaa !5
  store i32 %1, ptr %4, align 4, !tbaa !9
  %9 = load ptr, ptr %3, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr %5) #4
  %10 = getelementptr inbounds %"class.fxdsp::ParametricEqEffect", ptr %9, i32 0, i32 2
  store ptr %10, ptr %5, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #4
  %11 = load ptr, ptr %5, align 8, !tbaa !5
  %12 = call ptr @_ZNSt6vectorIS_ISt10unique_ptrIN5fxdsp12BiquadFilterESt14default_deleteIS2_EESaIS5_EESaIS7_EE5beginEv(ptr noundef nonnull align 8 dereferenceable(24) %11) #4
  %13 = getelementptr inbounds %"class.__gnu_cxx::__normal_iterator.23", ptr %6, i32 0, i32 0
  store ptr %12, ptr %13, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr %7) #4
  %14 = load ptr, ptr %5, align 8, !tbaa !5
  %15 = call ptr @_ZNSt6vectorIS_ISt10unique_ptrIN5fxdsp12BiquadFilterESt14default_deleteIS2_EESaIS5_EESaIS7_EE3endEv(ptr noundef nonnull align 8 dereferenceable(24) %14) #4
  %16 = getelementptr inbounds %"class.__gnu_cxx::__normal_iterator.23", ptr %7, i32 0, i32 0
  store ptr %15, ptr %16, align 8
  br label %17

17:                                               ; preds = %25, %2
  %18 = call noundef zeroext i1 @_ZN9__gnu_cxxneIPSt6vectorISt10unique_ptrIN5fxdsp12BiquadFilterESt14default_deleteIS4_EESaIS7_EES1_IS9_SaIS9_EEEEbRKNS_17__normal_iteratorIT_T0_EESI_(ptr noundef nonnull align 8 dereferenceable(8) %6, ptr noundef nonnull align 8 dereferenceable(8) %7) #4
  br i1 %18, label %20, label %19

19:                                               ; preds = %17
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #4
  br label %27

20:                                               ; preds = %17
  call void @llvm.lifetime.start.p0(i64 8, ptr %8) #4
  %21 = call noundef nonnull align 8 dereferenceable(24) ptr @_ZNK9__gnu_cxx17__normal_iteratorIPSt6vectorISt10unique_ptrIN5fxdsp12BiquadFilterESt14default_deleteIS4_EESaIS7_EES1_IS9_SaIS9_EEEdeEv(ptr noundef nonnull align 8 dereferenceable(8) %6) #4
  store ptr %21, ptr %8, align 8, !tbaa !5
  %22 = load ptr, ptr %8, align 8, !tbaa !5
  %23 = load i32, ptr %4, align 4, !tbaa !9
  %24 = sext i32 %23 to i64
  call void @_ZNSt6vectorISt10unique_ptrIN5fxdsp12BiquadFilterESt14default_deleteIS2_EESaIS5_EE7reserveEm(ptr noundef nonnull align 8 dereferenceable(24) %22, i64 noundef %24)
  call void @llvm.lifetime.end.p0(i64 8, ptr %8) #4
  br label %25

25:                                               ; preds = %20
  %26 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZN9__gnu_cxx17__normal_iteratorIPSt6vectorISt10unique_ptrIN5fxdsp12BiquadFilterESt14default_deleteIS4_EESaIS7_EES1_IS9_SaIS9_EEEppEv(ptr noundef nonnull align 8 dereferenceable(8) %6) #4
  br label %17

27:                                               ; preds = %19
  ret void
}

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt6vectorISt10unique_ptrIN5fxdsp12BiquadFilterESt14default_deleteIS2_EESaIS5_EE7reserveEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) #3 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 = { 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 #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 = !{!"int", !7, i64 0}


; 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.__gnu_cxx::__normal_iterator.23" = type { ptr }

; 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
declare dso_local ptr @_ZNSt6vectorIS_ISt10unique_ptrIN5fxdsp12BiquadFilterESt14default_deleteIS2_EESaIS5_EESaIS7_EE5beginEv(ptr noundef nonnull align 8 dereferenceable(24)) local_unnamed_addr #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZNSt6vectorIS_ISt10unique_ptrIN5fxdsp12BiquadFilterESt14default_deleteIS2_EESaIS5_EESaIS7_EE3endEv(ptr noundef nonnull align 8 dereferenceable(24)) local_unnamed_addr #1 align 2

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef zeroext i1 @_ZN9__gnu_cxxneIPSt6vectorISt10unique_ptrIN5fxdsp12BiquadFilterESt14default_deleteIS4_EESaIS7_EES1_IS9_SaIS9_EEEEbRKNS_17__normal_iteratorIT_T0_EESI_(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef nonnull align 8 dereferenceable(8)) local_unnamed_addr #2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(24) ptr @_ZNK9__gnu_cxx17__normal_iteratorIPSt6vectorISt10unique_ptrIN5fxdsp12BiquadFilterESt14default_deleteIS4_EESaIS7_EES1_IS9_SaIS9_EEEdeEv(ptr noundef nonnull align 8 dereferenceable(8)) local_unnamed_addr #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(8) ptr @_ZN9__gnu_cxx17__normal_iteratorIPSt6vectorISt10unique_ptrIN5fxdsp12BiquadFilterESt14default_deleteIS4_EESaIS7_EES1_IS9_SaIS9_EEEppEv(ptr noundef nonnull align 8 dereferenceable(8)) local_unnamed_addr #1 align 2

; Function Attrs: mustprogress uwtable
define dso_local void @_ZN5fxdsp18ParametricEqEffect15reserve_filtersEi(ptr noundef nonnull align 8 dereferenceable(84) %0, i32 noundef %1) local_unnamed_addr #3 align 2 {
  %3 = alloca %"class.__gnu_cxx::__normal_iterator.23", align 8
  %4 = alloca %"class.__gnu_cxx::__normal_iterator.23", align 8
  %5 = getelementptr inbounds i8, ptr %0, i64 56
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %3) #4
  %6 = tail call ptr @_ZNSt6vectorIS_ISt10unique_ptrIN5fxdsp12BiquadFilterESt14default_deleteIS2_EESaIS5_EESaIS7_EE5beginEv(ptr noundef nonnull align 8 dereferenceable(24) %5) #4
  store ptr %6, ptr %3, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %4) #4
  %7 = tail call ptr @_ZNSt6vectorIS_ISt10unique_ptrIN5fxdsp12BiquadFilterESt14default_deleteIS2_EESaIS5_EESaIS7_EE3endEv(ptr noundef nonnull align 8 dereferenceable(24) %5) #4
  store ptr %7, ptr %4, align 8
  %8 = call noundef zeroext i1 @_ZN9__gnu_cxxneIPSt6vectorISt10unique_ptrIN5fxdsp12BiquadFilterESt14default_deleteIS4_EESaIS7_EES1_IS9_SaIS9_EEEEbRKNS_17__normal_iteratorIT_T0_EESI_(ptr noundef nonnull align 8 dereferenceable(8) %3, ptr noundef nonnull align 8 dereferenceable(8) %4) #4
  br i1 %8, label %.lr.ph, label %._crit_edge

.lr.ph:                                           ; preds = %2
  %9 = sext i32 %1 to i64
  br label %10

._crit_edge:                                      ; preds = %10, %2
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %4) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %3) #4
  ret void

10:                                               ; preds = %.lr.ph, %10
  %11 = call noundef nonnull align 8 dereferenceable(24) ptr @_ZNK9__gnu_cxx17__normal_iteratorIPSt6vectorISt10unique_ptrIN5fxdsp12BiquadFilterESt14default_deleteIS4_EESaIS7_EES1_IS9_SaIS9_EEEdeEv(ptr noundef nonnull align 8 dereferenceable(8) %3) #4
  call void @_ZNSt6vectorISt10unique_ptrIN5fxdsp12BiquadFilterESt14default_deleteIS2_EESaIS5_EE7reserveEm(ptr noundef nonnull align 8 dereferenceable(24) %11, i64 noundef %9)
  %12 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZN9__gnu_cxx17__normal_iteratorIPSt6vectorISt10unique_ptrIN5fxdsp12BiquadFilterESt14default_deleteIS4_EESaIS7_EES1_IS9_SaIS9_EEEppEv(ptr noundef nonnull align 8 dereferenceable(8) %3) #4
  %13 = call noundef zeroext i1 @_ZN9__gnu_cxxneIPSt6vectorISt10unique_ptrIN5fxdsp12BiquadFilterESt14default_deleteIS4_EESaIS7_EES1_IS9_SaIS9_EEEEbRKNS_17__normal_iteratorIT_T0_EESI_(ptr noundef nonnull align 8 dereferenceable(8) %3, ptr noundef nonnull align 8 dereferenceable(8) %4) #4
  br i1 %13, label %10, label %._crit_edge
}

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt6vectorISt10unique_ptrIN5fxdsp12BiquadFilterESt14default_deleteIS2_EESaIS5_EE7reserveEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) local_unnamed_addr #3 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 = { 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 #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)"}


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