; LLVM IR from jgaeddert/liquid-dsp :: src/equalization/src (equalizer_rrrf)

; 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"

%struct.eqrls_rrrf_s = type { i32, float, float, ptr, ptr, ptr, ptr, ptr, ptr, ptr, float, ptr, ptr, i32, 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: nounwind uwtable
declare dso_local ptr @eqrls_rrrf_create(ptr noundef, i32 noundef) #1

; Function Attrs: nounwind uwtable
define dso_local ptr @eqrls_rrrf_recreate(ptr noundef %0, ptr noundef %1, i32 noundef %2) #1 {
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  %6 = alloca ptr, align 8
  %7 = alloca i32, align 4
  %8 = alloca i32, align 4
  store ptr %0, ptr %5, align 8, !tbaa !5
  store ptr %1, ptr %6, align 8, !tbaa !5
  store i32 %2, ptr %7, align 4, !tbaa !9
  %9 = load ptr, ptr %5, align 8, !tbaa !5
  %10 = getelementptr inbounds %struct.eqrls_rrrf_s, ptr %9, i32 0, i32 0
  %11 = load i32, ptr %10, align 8, !tbaa !11
  %12 = load i32, ptr %7, align 4, !tbaa !9
  %13 = icmp eq i32 %11, %12
  br i1 %13, label %14, label %38

14:                                               ; preds = %3
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #2
  store i32 0, ptr %8, align 4, !tbaa !9
  br label %15

15:                                               ; preds = %33, %14
  %16 = load i32, ptr %8, align 4, !tbaa !9
  %17 = load ptr, ptr %5, align 8, !tbaa !5
  %18 = getelementptr inbounds %struct.eqrls_rrrf_s, ptr %17, i32 0, i32 0
  %19 = load i32, ptr %18, align 8, !tbaa !11
  %20 = icmp ult i32 %16, %19
  br i1 %20, label %21, label %36

21:                                               ; preds = %15
  %22 = load ptr, ptr %6, align 8, !tbaa !5
  %23 = load i32, ptr %8, align 4, !tbaa !9
  %24 = zext i32 %23 to i64
  %25 = getelementptr inbounds float, ptr %22, i64 %24
  %26 = load float, ptr %25, align 4, !tbaa !14
  %27 = load ptr, ptr %5, align 8, !tbaa !5
  %28 = getelementptr inbounds %struct.eqrls_rrrf_s, ptr %27, i32 0, i32 3
  %29 = load ptr, ptr %28, align 8, !tbaa !15
  %30 = load i32, ptr %8, align 4, !tbaa !9
  %31 = zext i32 %30 to i64
  %32 = getelementptr inbounds float, ptr %29, i64 %31
  store float %26, ptr %32, align 4, !tbaa !14
  br label %33

33:                                               ; preds = %21
  %34 = load i32, ptr %8, align 4, !tbaa !9
  %35 = add i32 %34, 1
  store i32 %35, ptr %8, align 4, !tbaa !9
  br label %15, !llvm.loop !16

36:                                               ; preds = %15
  %37 = load ptr, ptr %5, align 8, !tbaa !5
  store ptr %37, ptr %4, align 8
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #2
  br label %44

38:                                               ; preds = %3
  %39 = load ptr, ptr %5, align 8, !tbaa !5
  %40 = call i32 @eqrls_rrrf_destroy(ptr noundef %39)
  %41 = load ptr, ptr %6, align 8, !tbaa !5
  %42 = load i32, ptr %7, align 4, !tbaa !9
  %43 = call ptr @eqrls_rrrf_create(ptr noundef %41, i32 noundef %42)
  store ptr %43, ptr %4, align 8
  br label %44

44:                                               ; preds = %38, %36
  %45 = load ptr, ptr %4, align 8
  ret ptr %45
}

; Function Attrs: nounwind uwtable
declare dso_local i32 @eqrls_rrrf_destroy(ptr noundef) #1

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { 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, !6, i64 0}
!6 = !{!"any pointer", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"int", !7, i64 0}
!11 = !{!12, !10, i64 0}
!12 = !{!"eqrls_rrrf_s", !10, i64 0, !13, i64 4, !13, i64 8, !6, i64 16, !6, i64 24, !6, i64 32, !6, i64 40, !6, i64 48, !6, i64 56, !6, i64 64, !13, i64 72, !6, i64 80, !6, i64 88, !10, i64 96, !6, i64 104}
!13 = !{!"float", !7, i64 0}
!14 = !{!13, !13, i64 0}
!15 = !{!12, !6, i64 16}
!16 = distinct !{!16, !17}
!17 = !{!"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: nounwind uwtable
declare dso_local ptr @eqrls_rrrf_create(ptr noundef, i32 noundef) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
define dso_local ptr @eqrls_rrrf_recreate(ptr noundef %0, ptr noundef %1, i32 noundef %2) local_unnamed_addr #0 {
  %4 = ptrtoint ptr %1 to i64
  %5 = load i32, ptr %0, align 8, !tbaa !5
  %6 = icmp eq i32 %5, %2
  br i1 %6, label %.preheader, label %33

.preheader:                                       ; preds = %3
  %.not = icmp eq i32 %2, 0
  br i1 %.not, label %.loopexit, label %.lr.ph

.lr.ph:                                           ; preds = %.preheader
  %7 = getelementptr inbounds i8, ptr %0, i64 16
  %8 = load ptr, ptr %7, align 8, !tbaa !12
  %wide.trip.count = zext i32 %2 to i64
  %min.iters.check = icmp ult i32 %2, 8
  %9 = ptrtoint ptr %8 to i64
  %10 = sub i64 %9, %4
  %diff.check = icmp ult i64 %10, 32
  %or.cond = select i1 %min.iters.check, i1 true, i1 %diff.check
  br i1 %or.cond, label %scalar.ph.preheader, label %vector.ph

vector.ph:                                        ; preds = %.lr.ph
  %n.vec = and i64 %wide.trip.count, 4294967288
  br label %vector.body

vector.body:                                      ; preds = %vector.body, %vector.ph
  %index = phi i64 [ 0, %vector.ph ], [ %index.next, %vector.body ]
  %11 = getelementptr inbounds float, ptr %1, i64 %index
  %12 = getelementptr inbounds i8, ptr %11, i64 16
  %wide.load = load <4 x float>, ptr %11, align 4, !tbaa !13
  %wide.load17 = load <4 x float>, ptr %12, align 4, !tbaa !13
  %13 = getelementptr inbounds float, ptr %8, i64 %index
  %14 = getelementptr inbounds i8, ptr %13, i64 16
  store <4 x float> %wide.load, ptr %13, align 4, !tbaa !13
  store <4 x float> %wide.load17, ptr %14, align 4, !tbaa !13
  %index.next = add nuw i64 %index, 8
  %15 = icmp eq i64 %index.next, %n.vec
  br i1 %15, label %middle.block, label %vector.body, !llvm.loop !14

middle.block:                                     ; preds = %vector.body
  %cmp.n = icmp eq i64 %n.vec, %wide.trip.count
  br i1 %cmp.n, label %.loopexit, label %scalar.ph.preheader

scalar.ph.preheader:                              ; preds = %middle.block, %.lr.ph
  %indvars.iv.ph = phi i64 [ 0, %.lr.ph ], [ %n.vec, %middle.block ]
  %xtraiter = and i64 %wide.trip.count, 3
  %lcmp.mod.not = icmp eq i64 %xtraiter, 0
  br i1 %lcmp.mod.not, label %scalar.ph.prol.loopexit, label %scalar.ph.prol

scalar.ph.prol:                                   ; preds = %scalar.ph.preheader, %scalar.ph.prol
  %indvars.iv.prol = phi i64 [ %indvars.iv.next.prol, %scalar.ph.prol ], [ %indvars.iv.ph, %scalar.ph.preheader ]
  %prol.iter = phi i64 [ %prol.iter.next, %scalar.ph.prol ], [ 0, %scalar.ph.preheader ]
  %16 = getelementptr inbounds float, ptr %1, i64 %indvars.iv.prol
  %17 = load float, ptr %16, align 4, !tbaa !13
  %18 = getelementptr inbounds float, ptr %8, i64 %indvars.iv.prol
  store float %17, ptr %18, align 4, !tbaa !13
  %indvars.iv.next.prol = add nuw nsw i64 %indvars.iv.prol, 1
  %prol.iter.next = add i64 %prol.iter, 1
  %prol.iter.cmp.not = icmp eq i64 %prol.iter.next, %xtraiter
  br i1 %prol.iter.cmp.not, label %scalar.ph.prol.loopexit, label %scalar.ph.prol, !llvm.loop !18

scalar.ph.prol.loopexit:                          ; preds = %scalar.ph.prol, %scalar.ph.preheader
  %indvars.iv.unr = phi i64 [ %indvars.iv.ph, %scalar.ph.preheader ], [ %indvars.iv.next.prol, %scalar.ph.prol ]
  %19 = sub nsw i64 %indvars.iv.ph, %wide.trip.count
  %20 = icmp ugt i64 %19, -4
  br i1 %20, label %.loopexit, label %scalar.ph

scalar.ph:                                        ; preds = %scalar.ph.prol.loopexit, %scalar.ph
  %indvars.iv = phi i64 [ %indvars.iv.next.3, %scalar.ph ], [ %indvars.iv.unr, %scalar.ph.prol.loopexit ]
  %21 = getelementptr inbounds float, ptr %1, i64 %indvars.iv
  %22 = load float, ptr %21, align 4, !tbaa !13
  %23 = getelementptr inbounds float, ptr %8, i64 %indvars.iv
  store float %22, ptr %23, align 4, !tbaa !13
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %24 = getelementptr inbounds float, ptr %1, i64 %indvars.iv.next
  %25 = load float, ptr %24, align 4, !tbaa !13
  %26 = getelementptr inbounds float, ptr %8, i64 %indvars.iv.next
  store float %25, ptr %26, align 4, !tbaa !13
  %indvars.iv.next.1 = add nuw nsw i64 %indvars.iv, 2
  %27 = getelementptr inbounds float, ptr %1, i64 %indvars.iv.next.1
  %28 = load float, ptr %27, align 4, !tbaa !13
  %29 = getelementptr inbounds float, ptr %8, i64 %indvars.iv.next.1
  store float %28, ptr %29, align 4, !tbaa !13
  %indvars.iv.next.2 = add nuw nsw i64 %indvars.iv, 3
  %30 = getelementptr inbounds float, ptr %1, i64 %indvars.iv.next.2
  %31 = load float, ptr %30, align 4, !tbaa !13
  %32 = getelementptr inbounds float, ptr %8, i64 %indvars.iv.next.2
  store float %31, ptr %32, align 4, !tbaa !13
  %indvars.iv.next.3 = add nuw nsw i64 %indvars.iv, 4
  %exitcond.not.3 = icmp eq i64 %indvars.iv.next.3, %wide.trip.count
  br i1 %exitcond.not.3, label %.loopexit, label %scalar.ph, !llvm.loop !20

33:                                               ; preds = %3
  %34 = tail call i32 @eqrls_rrrf_destroy(ptr noundef nonnull %0)
  %35 = tail call ptr @eqrls_rrrf_create(ptr noundef %1, i32 noundef %2)
  br label %.loopexit

.loopexit:                                        ; preds = %scalar.ph.prol.loopexit, %scalar.ph, %middle.block, %.preheader, %33
  %.013 = phi ptr [ %35, %33 ], [ %0, %.preheader ], [ %0, %middle.block ], [ %0, %scalar.ph ], [ %0, %scalar.ph.prol.loopexit ]
  ret ptr %.013
}

; Function Attrs: nounwind uwtable
declare dso_local i32 @eqrls_rrrf_destroy(ptr noundef) local_unnamed_addr #0

attributes #0 = { 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" }

!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 = !{!"eqrls_rrrf_s", !7, i64 0, !10, i64 4, !10, i64 8, !11, i64 16, !11, i64 24, !11, i64 32, !11, i64 40, !11, i64 48, !11, i64 56, !11, i64 64, !10, i64 72, !11, i64 80, !11, i64 88, !7, i64 96, !11, i64 104}
!7 = !{!"int", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!"float", !8, i64 0}
!11 = !{!"any pointer", !8, i64 0}
!12 = !{!6, !11, i64 16}
!13 = !{!10, !10, i64 0}
!14 = distinct !{!14, !15, !16, !17}
!15 = !{!"llvm.loop.mustprogress"}
!16 = !{!"llvm.loop.isvectorized", i32 1}
!17 = !{!"llvm.loop.unroll.runtime.disable"}
!18 = distinct !{!18, !19}
!19 = !{!"llvm.loop.unroll.disable"}
!20 = distinct !{!20, !15, !16}


; Effective O3 passes: CorrelatedValuePropagationPass,EarlyCSEPass,GVNPass,GlobalOptPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LICMPass,LoopLoadEliminationPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,LoopVectorizePass,SROAPass,SimplifyCFGPass,TailCallElimPass