; LLVM IR from jgaeddert/liquid-dsp :: src/filter/src (filter_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"

@.str.1 = external hidden unnamed_addr constant [84 x i8], align 1
@.str.3 = external hidden unnamed_addr constant [5 x i8], align 1
@.str.10 = external hidden unnamed_addr constant [42 x i8], align 1

; 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

declare i32 @liquid_error_fl(i32 noundef, ptr noundef, i32 noundef, ptr noundef, ...) #1

; Function Attrs: nounwind uwtable
declare dso_local i32 @fdelay_rrrf_push(ptr noundef, float noundef) #2

; Function Attrs: nounwind uwtable
define dso_local i32 @fdelay_rrrf_write(ptr noundef %0, ptr noundef %1, i32 noundef %2) #2 {
  %4 = alloca i32, align 4
  %5 = alloca ptr, align 8
  %6 = alloca ptr, align 8
  %7 = alloca i32, align 4
  %8 = alloca i32, align 4
  %9 = 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
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #3
  store i32 0, ptr %8, align 4, !tbaa !9
  br label %10

10:                                               ; preds = %26, %3
  %11 = load i32, ptr %8, align 4, !tbaa !9
  %12 = load i32, ptr %7, align 4, !tbaa !9
  %13 = icmp ult i32 %11, %12
  br i1 %13, label %14, label %29

14:                                               ; preds = %10
  %15 = load ptr, ptr %5, align 8, !tbaa !5
  %16 = load ptr, ptr %6, align 8, !tbaa !5
  %17 = load i32, ptr %8, align 4, !tbaa !9
  %18 = zext i32 %17 to i64
  %19 = getelementptr inbounds float, ptr %16, i64 %18
  %20 = load float, ptr %19, align 4, !tbaa !11
  %21 = call i32 @fdelay_rrrf_push(ptr noundef %15, float noundef %20)
  %22 = icmp ne i32 %21, 0
  br i1 %22, label %23, label %25

23:                                               ; preds = %14
  %24 = call i32 (i32, ptr, i32, ptr, ...) @liquid_error_fl(i32 noundef 1, ptr noundef @.str.1, i32 noundef 203, ptr noundef @.str.10, ptr noundef @.str.3)
  store i32 %24, ptr %4, align 4
  store i32 1, ptr %9, align 4
  br label %30

25:                                               ; preds = %14
  br label %26

26:                                               ; preds = %25
  %27 = load i32, ptr %8, align 4, !tbaa !9
  %28 = add i32 %27, 1
  store i32 %28, ptr %8, align 4, !tbaa !9
  br label %10, !llvm.loop !13

29:                                               ; preds = %10
  store i32 0, ptr %4, align 4
  store i32 1, ptr %9, align 4
  br label %30

30:                                               ; preds = %29, %23
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #3
  %31 = load i32, ptr %4, align 4
  ret i32 %31
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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 = { 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 = { 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, !12, i64 0}
!12 = !{!"float", !7, i64 0}
!13 = distinct !{!13, !14}
!14 = !{!"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"

@.str.1 = external hidden unnamed_addr constant [84 x i8], align 1
@.str.3 = external hidden unnamed_addr constant [5 x i8], align 1
@.str.10 = external hidden unnamed_addr constant [42 x i8], align 1

declare i32 @liquid_error_fl(i32 noundef, ptr noundef, i32 noundef, ptr noundef, ...) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
declare dso_local i32 @fdelay_rrrf_push(ptr noundef, float noundef) local_unnamed_addr #1

; Function Attrs: nounwind uwtable
define dso_local i32 @fdelay_rrrf_write(ptr noundef %0, ptr nocapture noundef readonly %1, i32 noundef %2) local_unnamed_addr #1 {
  %.not8 = icmp eq i32 %2, 0
  br i1 %.not8, label %.loopexit, label %.lr.ph.preheader

.lr.ph.preheader:                                 ; preds = %3
  %wide.trip.count = zext i32 %2 to i64
  br label %.lr.ph

4:                                                ; preds = %.lr.ph
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %exitcond.not = icmp eq i64 %indvars.iv.next, %wide.trip.count
  br i1 %exitcond.not, label %.loopexit, label %.lr.ph, !llvm.loop !5

.lr.ph:                                           ; preds = %.lr.ph.preheader, %4
  %indvars.iv = phi i64 [ 0, %.lr.ph.preheader ], [ %indvars.iv.next, %4 ]
  %5 = getelementptr inbounds float, ptr %1, i64 %indvars.iv
  %6 = load float, ptr %5, align 4, !tbaa !7
  %7 = tail call i32 @fdelay_rrrf_push(ptr noundef %0, float noundef %6)
  %.not = icmp eq i32 %7, 0
  br i1 %.not, label %4, label %8

8:                                                ; preds = %.lr.ph
  %9 = tail call i32 (i32, ptr, i32, ptr, ...) @liquid_error_fl(i32 noundef 1, ptr noundef nonnull @.str.1, i32 noundef 203, ptr noundef nonnull @.str.10, ptr noundef nonnull @.str.3) #2
  br label %.loopexit

.loopexit:                                        ; preds = %4, %3, %8
  %.06 = phi i32 [ %9, %8 ], [ 0, %3 ], [ 0, %4 ]
  ret i32 %.06
}

attributes #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 = { 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 = distinct !{!5, !6}
!6 = !{!"llvm.loop.mustprogress"}
!7 = !{!8, !8, i64 0}
!8 = !{!"float", !9, i64 0}
!9 = !{!"omnipotent char", !10, i64 0}
!10 = !{!"Simple C/C++ TBAA"}


; Effective O3 passes: CorrelatedValuePropagationPass,GlobalOptPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass