; LLVM IR from jgaeddert/liquid-dsp :: src/filter/src (filter_cccf)

; 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.autocorr_cccf_s = type { i32, i32, ptr, ptr, ptr, float, i32 }

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: nounwind uwtable
define dso_local i32 @autocorr_cccf_reset(ptr noundef %0) #1 {
  %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, !tbaa !5
  %5 = getelementptr inbounds %struct.autocorr_cccf_s, ptr %4, i32 0, i32 2
  %6 = load ptr, ptr %5, align 8, !tbaa !9
  %7 = call i32 @windowcf_reset(ptr noundef %6)
  %8 = load ptr, ptr %2, align 8, !tbaa !5
  %9 = getelementptr inbounds %struct.autocorr_cccf_s, ptr %8, i32 0, i32 3
  %10 = load ptr, ptr %9, align 8, !tbaa !13
  %11 = call i32 @windowcf_reset(ptr noundef %10)
  %12 = load ptr, ptr %2, align 8, !tbaa !5
  %13 = getelementptr inbounds %struct.autocorr_cccf_s, ptr %12, i32 0, i32 5
  store float 0.000000e+00, ptr %13, align 8, !tbaa !14
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #3
  store i32 0, ptr %3, align 4, !tbaa !15
  br label %14

14:                                               ; preds = %27, %1
  %15 = load i32, ptr %3, align 4, !tbaa !15
  %16 = load ptr, ptr %2, align 8, !tbaa !5
  %17 = getelementptr inbounds %struct.autocorr_cccf_s, ptr %16, i32 0, i32 0
  %18 = load i32, ptr %17, align 8, !tbaa !16
  %19 = icmp ult i32 %15, %18
  br i1 %19, label %20, label %30

20:                                               ; preds = %14
  %21 = load ptr, ptr %2, align 8, !tbaa !5
  %22 = getelementptr inbounds %struct.autocorr_cccf_s, ptr %21, i32 0, i32 4
  %23 = load ptr, ptr %22, align 8, !tbaa !17
  %24 = load i32, ptr %3, align 4, !tbaa !15
  %25 = zext i32 %24 to i64
  %26 = getelementptr inbounds float, ptr %23, i64 %25
  store float 0.000000e+00, ptr %26, align 4, !tbaa !18
  br label %27

27:                                               ; preds = %20
  %28 = load i32, ptr %3, align 4, !tbaa !15
  %29 = add i32 %28, 1
  store i32 %29, ptr %3, align 4, !tbaa !15
  br label %14, !llvm.loop !19

30:                                               ; preds = %14
  %31 = load ptr, ptr %2, align 8, !tbaa !5
  %32 = getelementptr inbounds %struct.autocorr_cccf_s, ptr %31, i32 0, i32 6
  store i32 0, ptr %32, align 4, !tbaa !21
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #3
  ret i32 0
}

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #0

declare i32 @windowcf_reset(ptr noundef) #2

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 = { "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/C++ TBAA"}
!9 = !{!10, !6, i64 8}
!10 = !{!"autocorr_cccf_s", !11, i64 0, !11, i64 4, !6, i64 8, !6, i64 16, !6, i64 24, !12, i64 32, !11, i64 36}
!11 = !{!"int", !7, i64 0}
!12 = !{!"float", !7, i64 0}
!13 = !{!10, !6, i64 16}
!14 = !{!10, !12, i64 32}
!15 = !{!11, !11, i64 0}
!16 = !{!10, !11, i64 0}
!17 = !{!10, !6, i64 24}
!18 = !{!12, !12, i64 0}
!19 = distinct !{!19, !20}
!20 = !{!"llvm.loop.mustprogress"}
!21 = !{!10, !11, i64 36}


; 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
define dso_local noundef i32 @autocorr_cccf_reset(ptr nocapture noundef %0) local_unnamed_addr #0 {
  %2 = getelementptr inbounds i8, ptr %0, i64 8
  %3 = load ptr, ptr %2, align 8, !tbaa !5
  %4 = tail call i32 @windowcf_reset(ptr noundef %3) #3
  %5 = getelementptr inbounds i8, ptr %0, i64 16
  %6 = load ptr, ptr %5, align 8, !tbaa !12
  %7 = tail call i32 @windowcf_reset(ptr noundef %6) #3
  %8 = getelementptr inbounds i8, ptr %0, i64 32
  store float 0.000000e+00, ptr %8, align 8, !tbaa !13
  %9 = load i32, ptr %0, align 8, !tbaa !14
  %.not = icmp eq i32 %9, 0
  br i1 %.not, label %._crit_edge, label %.lr.ph

.lr.ph:                                           ; preds = %1
  %10 = getelementptr inbounds i8, ptr %0, i64 24
  %11 = load ptr, ptr %10, align 8, !tbaa !15
  %12 = zext i32 %9 to i64
  %13 = shl nuw nsw i64 %12, 2
  tail call void @llvm.memset.p0.i64(ptr align 4 %11, i8 0, i64 %13, i1 false), !tbaa !16
  br label %._crit_edge

._crit_edge:                                      ; preds = %.lr.ph, %1
  %14 = getelementptr inbounds i8, ptr %0, i64 36
  store i32 0, ptr %14, align 4, !tbaa !17
  ret i32 0
}

declare i32 @windowcf_reset(ptr noundef) local_unnamed_addr #1

; Function Attrs: nocallback nofree nounwind willreturn memory(argmem: write)
declare void @llvm.memset.p0.i64(ptr nocapture writeonly, i8, i64, i1 immarg) #2

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" }
attributes #1 = { "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 = { nocallback nofree nounwind willreturn memory(argmem: write) }
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, !10, i64 8}
!6 = !{!"autocorr_cccf_s", !7, i64 0, !7, i64 4, !10, i64 8, !10, i64 16, !10, i64 24, !11, i64 32, !7, i64 36}
!7 = !{!"int", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!"any pointer", !8, i64 0}
!11 = !{!"float", !8, i64 0}
!12 = !{!6, !10, i64 16}
!13 = !{!6, !11, i64 32}
!14 = !{!6, !7, i64 0}
!15 = !{!6, !10, i64 24}
!16 = !{!11, !11, i64 0}
!17 = !{!6, !7, i64 36}


; Effective O3 passes: CorrelatedValuePropagationPass,EarlyCSEPass,GVNPass,GlobalOptPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,LICMPass,LoopIdiomRecognizePass,LoopRotatePass,LoopSimplifyPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass