; LLVM IR from Overload-Technologies/Overload :: Dependencies/soloud/src/filter/soloud_fftfilter.ll (ZN6SoLoud17FFTFilterInstance4initEv)

; 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.SoLoud::FFTFilterInstance" = type { %"class.SoLoud::FilterInstance", ptr, ptr, ptr, ptr, ptr, [8 x i32], [8 x i32], [8 x i32], ptr }
%"class.SoLoud::FilterInstance" = type { ptr, i32, i32, ptr, ptr }

; Function Attrs: mustprogress nounwind uwtable
define dso_local void @_ZN6SoLoud17FFTFilterInstance4initEv(ptr noundef nonnull align 8 dereferenceable(176) %0) #0 align 2 {
  %2 = alloca ptr, align 8
  %3 = alloca i32, align 4
  store ptr %0, ptr %2, align 8, !tbaa !5
  %4 = load ptr, ptr %2, align 8
  %5 = getelementptr inbounds %"class.SoLoud::FFTFilterInstance", ptr %4, i32 0, i32 2
  store ptr null, ptr %5, align 8, !tbaa !9
  %6 = getelementptr inbounds %"class.SoLoud::FFTFilterInstance", ptr %4, i32 0, i32 3
  store ptr null, ptr %6, align 8, !tbaa !13
  %7 = getelementptr inbounds %"class.SoLoud::FFTFilterInstance", ptr %4, i32 0, i32 1
  store ptr null, ptr %7, align 8, !tbaa !14
  %8 = getelementptr inbounds %"class.SoLoud::FFTFilterInstance", ptr %4, i32 0, i32 4
  store ptr null, ptr %8, align 8, !tbaa !15
  %9 = getelementptr inbounds %"class.SoLoud::FFTFilterInstance", ptr %4, i32 0, i32 5
  store ptr null, ptr %9, align 8, !tbaa !16
  %10 = getelementptr inbounds %"class.SoLoud::FFTFilterInstance", ptr %4, i32 0, i32 9
  store ptr null, ptr %10, align 8, !tbaa !17
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #2
  store i32 0, ptr %3, align 4, !tbaa !18
  br label %11

11:                                               ; preds = %27, %1
  %12 = load i32, ptr %3, align 4, !tbaa !18
  %13 = icmp slt i32 %12, 8
  br i1 %13, label %14, label %30

14:                                               ; preds = %11
  %15 = getelementptr inbounds %"class.SoLoud::FFTFilterInstance", ptr %4, i32 0, i32 6
  %16 = load i32, ptr %3, align 4, !tbaa !18
  %17 = sext i32 %16 to i64
  %18 = getelementptr inbounds [8 x i32], ptr %15, i64 0, i64 %17
  store i32 256, ptr %18, align 4, !tbaa !18
  %19 = getelementptr inbounds %"class.SoLoud::FFTFilterInstance", ptr %4, i32 0, i32 7
  %20 = load i32, ptr %3, align 4, !tbaa !18
  %21 = sext i32 %20 to i64
  %22 = getelementptr inbounds [8 x i32], ptr %19, i64 0, i64 %21
  store i32 128, ptr %22, align 4, !tbaa !18
  %23 = getelementptr inbounds %"class.SoLoud::FFTFilterInstance", ptr %4, i32 0, i32 8
  %24 = load i32, ptr %3, align 4, !tbaa !18
  %25 = sext i32 %24 to i64
  %26 = getelementptr inbounds [8 x i32], ptr %23, i64 0, i64 %25
  store i32 0, ptr %26, align 4, !tbaa !18
  br label %27

27:                                               ; preds = %14
  %28 = load i32, ptr %3, align 4, !tbaa !18
  %29 = add nsw i32 %28, 1
  store i32 %29, ptr %3, align 4, !tbaa !18
  br label %11, !llvm.loop !19

30:                                               ; preds = %11
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #2
  ret void
}

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1

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 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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, !6, i64 0}
!6 = !{!"any pointer", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = !{!10, !6, i64 40}
!10 = !{!"_ZTSN6SoLoud17FFTFilterInstanceE", !11, i64 0, !6, i64 32, !6, i64 40, !6, i64 48, !6, i64 56, !6, i64 64, !7, i64 72, !7, i64 104, !7, i64 136, !6, i64 168}
!11 = !{!"_ZTSN6SoLoud14FilterInstanceE", !12, i64 8, !12, i64 12, !6, i64 16, !6, i64 24}
!12 = !{!"int", !7, i64 0}
!13 = !{!10, !6, i64 48}
!14 = !{!10, !6, i64 32}
!15 = !{!10, !6, i64 56}
!16 = !{!10, !6, i64 64}
!17 = !{!10, !6, i64 168}
!18 = !{!12, !12, i64 0}
!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"

; Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(argmem: write) uwtable
define dso_local void @_ZN6SoLoud17FFTFilterInstance4initEv(ptr nocapture noundef nonnull writeonly align 8 dereferenceable(176) %0) local_unnamed_addr #0 align 2 {
  %2 = getelementptr inbounds i8, ptr %0, i64 32
  %3 = getelementptr inbounds i8, ptr %0, i64 168
  store ptr null, ptr %3, align 8, !tbaa !5
  %4 = getelementptr inbounds i8, ptr %0, i64 72
  %5 = getelementptr inbounds i8, ptr %0, i64 104
  %6 = getelementptr inbounds i8, ptr %0, i64 136
  tail call void @llvm.memset.p0.i64(ptr noundef nonnull align 8 dereferenceable(40) %2, i8 0, i64 40, i1 false)
  store <4 x i32> <i32 256, i32 256, i32 256, i32 256>, ptr %4, align 8, !tbaa !12
  store <4 x i32> <i32 128, i32 128, i32 128, i32 128>, ptr %5, align 8, !tbaa !12
  store <4 x i32> zeroinitializer, ptr %6, align 8, !tbaa !12
  %7 = getelementptr inbounds i8, ptr %0, i64 88
  %8 = getelementptr inbounds i8, ptr %0, i64 120
  %9 = getelementptr inbounds i8, ptr %0, i64 152
  store <4 x i32> <i32 256, i32 256, i32 256, i32 256>, ptr %7, align 8, !tbaa !12
  store <4 x i32> <i32 128, i32 128, i32 128, i32 128>, ptr %8, align 8, !tbaa !12
  store <4 x i32> zeroinitializer, ptr %9, align 8, !tbaa !12
  ret void
}

; Function Attrs: nocallback nofree nounwind willreturn memory(argmem: write)
declare void @llvm.memset.p0.i64(ptr nocapture writeonly, i8, i64, i1 immarg) #1

attributes #0 = { mustprogress nofree norecurse nosync nounwind willreturn memory(argmem: write) 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 = { nocallback nofree nounwind willreturn memory(argmem: write) }

!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, !11, i64 168}
!6 = !{!"_ZTSN6SoLoud17FFTFilterInstanceE", !7, i64 0, !11, i64 32, !11, i64 40, !11, i64 48, !11, i64 56, !11, i64 64, !9, i64 72, !9, i64 104, !9, i64 136, !11, i64 168}
!7 = !{!"_ZTSN6SoLoud14FilterInstanceE", !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 = !{!8, !8, i64 0}


; Effective O3 passes: EarlyCSEPass,GVNPass,GlobalOptPass,IndVarSimplifyPass,InferAlignmentPass,InferFunctionAttrsPass,InstCombinePass,LICMPass,LoopRotatePass,MemCpyOptPass,PostOrderFunctionAttrsPass,SLPVectorizerPass,SROAPass,SimplifyCFGPass,TailCallElimPass