; 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
define dso_local i32 @eqrls_rrrf_get_weights(ptr noundef %0, ptr noundef %1) #1 {
  %3 = alloca ptr, align 8
  %4 = alloca ptr, align 8
  %5 = alloca i32, align 4
  store ptr %0, ptr %3, align 8, !tbaa !5
  store ptr %1, ptr %4, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #2
  store i32 0, ptr %5, align 4, !tbaa !9
  br label %6

6:                                                ; preds = %29, %2
  %7 = load i32, ptr %5, align 4, !tbaa !9
  %8 = load ptr, ptr %3, align 8, !tbaa !5
  %9 = getelementptr inbounds %struct.eqrls_rrrf_s, ptr %8, i32 0, i32 0
  %10 = load i32, ptr %9, align 8, !tbaa !11
  %11 = icmp ult i32 %7, %10
  br i1 %11, label %12, label %32

12:                                               ; preds = %6
  %13 = load ptr, ptr %3, align 8, !tbaa !5
  %14 = getelementptr inbounds %struct.eqrls_rrrf_s, ptr %13, i32 0, i32 5
  %15 = load ptr, ptr %14, align 8, !tbaa !14
  %16 = load ptr, ptr %3, align 8, !tbaa !5
  %17 = getelementptr inbounds %struct.eqrls_rrrf_s, ptr %16, i32 0, i32 0
  %18 = load i32, ptr %17, align 8, !tbaa !11
  %19 = load i32, ptr %5, align 4, !tbaa !9
  %20 = sub i32 %18, %19
  %21 = sub i32 %20, 1
  %22 = zext i32 %21 to i64
  %23 = getelementptr inbounds float, ptr %15, i64 %22
  %24 = load float, ptr %23, align 4, !tbaa !15
  %25 = load ptr, ptr %4, align 8, !tbaa !5
  %26 = load i32, ptr %5, align 4, !tbaa !9
  %27 = zext i32 %26 to i64
  %28 = getelementptr inbounds float, ptr %25, i64 %27
  store float %24, ptr %28, align 4, !tbaa !15
  br label %29

29:                                               ; preds = %12
  %30 = load i32, ptr %5, align 4, !tbaa !9
  %31 = add i32 %30, 1
  store i32 %31, ptr %5, align 4, !tbaa !9
  br label %6, !llvm.loop !16

32:                                               ; preds = %6
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #2
  ret i32 0
}

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 = !{!12, !6, i64 32}
!15 = !{!13, !13, i64 0}
!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: nofree norecurse nosync nounwind memory(read, argmem: readwrite, inaccessiblemem: none) uwtable
define dso_local noundef i32 @eqrls_rrrf_get_weights(ptr nocapture noundef readonly %0, ptr nocapture noundef writeonly %1) local_unnamed_addr #0 {
  %3 = load i32, ptr %0, align 8, !tbaa !5
  %.not = icmp eq i32 %3, 0
  br i1 %.not, label %._crit_edge, label %.lr.ph

.lr.ph:                                           ; preds = %2
  %4 = getelementptr inbounds i8, ptr %0, i64 32
  %5 = load ptr, ptr %4, align 8, !tbaa !12
  %wide.trip.count = zext i32 %3 to i64
  %min.iters.check = icmp ult i32 %3, 32
  br i1 %min.iters.check, label %scalar.ph.preheader, label %vector.scevcheck

vector.scevcheck:                                 ; preds = %.lr.ph
  %6 = add nsw i64 %wide.trip.count, -1
  %7 = add i32 %3, -1
  %8 = trunc i64 %6 to i32
  %9 = icmp ult i32 %7, %8
  %10 = icmp ugt i64 %6, 4294967295
  %11 = or i1 %9, %10
  br i1 %11, label %scalar.ph.preheader, label %vector.memcheck

vector.memcheck:                                  ; preds = %vector.scevcheck
  %12 = shl nuw nsw i64 %wide.trip.count, 2
  %scevgep = getelementptr i8, ptr %1, i64 %12
  %13 = add i32 %3, -1
  %14 = zext i32 %13 to i64
  %15 = shl nuw nsw i64 %14, 2
  %16 = add nuw nsw i64 %15, 4
  %17 = sub nsw i64 %16, %12
  %scevgep10 = getelementptr i8, ptr %5, i64 %17
  %18 = getelementptr i8, ptr %5, i64 %15
  %scevgep11 = getelementptr i8, ptr %18, i64 4
  %bound0 = icmp ugt ptr %scevgep11, %1
  %bound1 = icmp ult ptr %scevgep10, %scevgep
  %found.conflict = and i1 %bound0, %bound1
  br i1 %found.conflict, label %scalar.ph.preheader, label %vector.ph

vector.ph:                                        ; preds = %vector.memcheck
  %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 ]
  %19 = trunc i64 %index to i32
  %20 = xor i32 %19, -1
  %21 = add i32 %3, %20
  %22 = zext i32 %21 to i64
  %23 = getelementptr inbounds float, ptr %5, i64 %22
  %24 = getelementptr inbounds i8, ptr %23, i64 -12
  %25 = getelementptr inbounds i8, ptr %23, i64 -28
  %wide.load = load <4 x float>, ptr %24, align 4, !tbaa !13, !alias.scope !14
  %reverse = shufflevector <4 x float> %wide.load, <4 x float> poison, <4 x i32> <i32 3, i32 2, i32 1, i32 0>
  %wide.load12 = load <4 x float>, ptr %25, align 4, !tbaa !13, !alias.scope !14
  %reverse13 = shufflevector <4 x float> %wide.load12, <4 x float> poison, <4 x i32> <i32 3, i32 2, i32 1, i32 0>
  %26 = getelementptr inbounds float, ptr %1, i64 %index
  %27 = getelementptr inbounds i8, ptr %26, i64 16
  store <4 x float> %reverse, ptr %26, align 4, !tbaa !13, !alias.scope !17, !noalias !14
  store <4 x float> %reverse13, ptr %27, align 4, !tbaa !13, !alias.scope !17, !noalias !14
  %index.next = add nuw i64 %index, 8
  %28 = icmp eq i64 %index.next, %n.vec
  br i1 %28, label %middle.block, label %vector.body, !llvm.loop !19

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

scalar.ph.preheader:                              ; preds = %middle.block, %vector.memcheck, %vector.scevcheck, %.lr.ph
  %indvars.iv.ph = phi i64 [ 0, %vector.memcheck ], [ 0, %vector.scevcheck ], [ 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 ]
  %29 = trunc nuw i64 %indvars.iv.prol to i32
  %30 = xor i32 %29, -1
  %31 = add i32 %3, %30
  %32 = zext i32 %31 to i64
  %33 = getelementptr inbounds float, ptr %5, i64 %32
  %34 = load float, ptr %33, align 4, !tbaa !13
  %35 = getelementptr inbounds float, ptr %1, i64 %indvars.iv.prol
  store float %34, ptr %35, 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 !23

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 ]
  %36 = sub nsw i64 %indvars.iv.ph, %wide.trip.count
  %37 = icmp ugt i64 %36, -4
  br i1 %37, label %._crit_edge, 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 ]
  %38 = trunc nuw i64 %indvars.iv to i32
  %39 = xor i32 %38, -1
  %40 = add i32 %3, %39
  %41 = zext i32 %40 to i64
  %42 = getelementptr inbounds float, ptr %5, i64 %41
  %43 = load float, ptr %42, align 4, !tbaa !13
  %44 = getelementptr inbounds float, ptr %1, i64 %indvars.iv
  store float %43, ptr %44, align 4, !tbaa !13
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %45 = trunc nuw i64 %indvars.iv.next to i32
  %46 = xor i32 %45, -1
  %47 = add i32 %3, %46
  %48 = zext i32 %47 to i64
  %49 = getelementptr inbounds float, ptr %5, i64 %48
  %50 = load float, ptr %49, align 4, !tbaa !13
  %51 = getelementptr inbounds float, ptr %1, i64 %indvars.iv.next
  store float %50, ptr %51, align 4, !tbaa !13
  %indvars.iv.next.1 = add nuw nsw i64 %indvars.iv, 2
  %52 = trunc nuw i64 %indvars.iv.next.1 to i32
  %53 = xor i32 %52, -1
  %54 = add i32 %3, %53
  %55 = zext i32 %54 to i64
  %56 = getelementptr inbounds float, ptr %5, i64 %55
  %57 = load float, ptr %56, align 4, !tbaa !13
  %58 = getelementptr inbounds float, ptr %1, i64 %indvars.iv.next.1
  store float %57, ptr %58, align 4, !tbaa !13
  %indvars.iv.next.2 = add nuw nsw i64 %indvars.iv, 3
  %59 = trunc nuw i64 %indvars.iv.next.2 to i32
  %60 = xor i32 %59, -1
  %61 = add i32 %3, %60
  %62 = zext i32 %61 to i64
  %63 = getelementptr inbounds float, ptr %5, i64 %62
  %64 = load float, ptr %63, align 4, !tbaa !13
  %65 = getelementptr inbounds float, ptr %1, i64 %indvars.iv.next.2
  store float %64, ptr %65, 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 %._crit_edge, label %scalar.ph, !llvm.loop !25

._crit_edge:                                      ; preds = %scalar.ph.prol.loopexit, %scalar.ph, %middle.block, %2
  ret i32 0
}

attributes #0 = { nofree norecurse nosync nounwind memory(read, argmem: readwrite, inaccessiblemem: none) 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 32}
!13 = !{!10, !10, i64 0}
!14 = !{!15}
!15 = distinct !{!15, !16}
!16 = distinct !{!16, !"LVerDomain"}
!17 = !{!18}
!18 = distinct !{!18, !16}
!19 = distinct !{!19, !20, !21, !22}
!20 = !{!"llvm.loop.mustprogress"}
!21 = !{!"llvm.loop.isvectorized", i32 1}
!22 = !{!"llvm.loop.unroll.runtime.disable"}
!23 = distinct !{!23, !24}
!24 = !{!"llvm.loop.unroll.disable"}
!25 = distinct !{!25, !20, !21}


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