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

; 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"

; 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 @symsync_crcf_execute(ptr noundef %0, ptr noundef %1, i32 noundef %2, ptr noundef %3, ptr noundef %4) #1 {
  %6 = alloca ptr, align 8
  %7 = alloca ptr, align 8
  %8 = alloca i32, align 4
  %9 = alloca ptr, align 8
  %10 = alloca ptr, align 8
  %11 = alloca i32, align 4
  %12 = alloca i32, align 4
  %13 = alloca i32, align 4
  %14 = alloca { float, float }, align 4
  store ptr %0, ptr %6, align 8, !tbaa !5
  store ptr %1, ptr %7, align 8, !tbaa !5
  store i32 %2, ptr %8, align 4, !tbaa !9
  store ptr %3, ptr %9, align 8, !tbaa !5
  store ptr %4, ptr %10, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %11) #2
  call void @llvm.lifetime.start.p0(i64 4, ptr %12) #2
  store i32 0, ptr %12, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %13) #2
  store i32 0, ptr %13, align 4, !tbaa !9
  store i32 0, ptr %11, align 4, !tbaa !9
  br label %15

15:                                               ; preds = %40, %5
  %16 = load i32, ptr %11, align 4, !tbaa !9
  %17 = load i32, ptr %8, align 4, !tbaa !9
  %18 = icmp ult i32 %16, %17
  br i1 %18, label %19, label %43

19:                                               ; preds = %15
  %20 = load ptr, ptr %6, align 8, !tbaa !5
  %21 = load ptr, ptr %7, align 8, !tbaa !5
  %22 = load i32, ptr %11, align 4, !tbaa !9
  %23 = zext i32 %22 to i64
  %24 = getelementptr inbounds { float, float }, ptr %21, i64 %23
  %25 = getelementptr inbounds { float, float }, ptr %24, i32 0, i32 0
  %26 = load float, ptr %25, align 4
  %27 = getelementptr inbounds { float, float }, ptr %24, i32 0, i32 1
  %28 = load float, ptr %27, align 4
  %29 = load ptr, ptr %9, align 8, !tbaa !5
  %30 = load i32, ptr %12, align 4, !tbaa !9
  %31 = zext i32 %30 to i64
  %32 = getelementptr inbounds { float, float }, ptr %29, i64 %31
  %33 = getelementptr inbounds { float, float }, ptr %14, i32 0, i32 0
  %34 = getelementptr inbounds { float, float }, ptr %14, i32 0, i32 1
  store float %26, ptr %33, align 4
  store float %28, ptr %34, align 4
  %35 = load <2 x float>, ptr %14, align 4
  %36 = call i32 @symsync_crcf_step(ptr noundef %20, <2 x float> noundef %35, ptr noundef %32, ptr noundef %13)
  %37 = load i32, ptr %13, align 4, !tbaa !9
  %38 = load i32, ptr %12, align 4, !tbaa !9
  %39 = add i32 %38, %37
  store i32 %39, ptr %12, align 4, !tbaa !9
  br label %40

40:                                               ; preds = %19
  %41 = load i32, ptr %11, align 4, !tbaa !9
  %42 = add i32 %41, 1
  store i32 %42, ptr %11, align 4, !tbaa !9
  br label %15, !llvm.loop !11

43:                                               ; preds = %15
  %44 = load i32, ptr %12, align 4, !tbaa !9
  %45 = load ptr, ptr %10, align 8, !tbaa !5
  store i32 %44, ptr %45, align 4, !tbaa !9
  call void @llvm.lifetime.end.p0(i64 4, ptr %13) #2
  call void @llvm.lifetime.end.p0(i64 4, ptr %12) #2
  call void @llvm.lifetime.end.p0(i64 4, ptr %11) #2
  ret i32 0
}

; Function Attrs: nounwind uwtable
declare dso_local i32 @symsync_crcf_step(ptr noundef, <2 x float> noundef, ptr noundef, ptr noundef) #1

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { nounwind uwtable "min-legal-vector-width"="64" "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 = distinct !{!11, !12}
!12 = !{!"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 nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: mustprogress 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 noundef i32 @symsync_crcf_execute(ptr noundef %0, ptr nocapture noundef readonly %1, i32 noundef %2, ptr noundef %3, ptr nocapture noundef writeonly %4) local_unnamed_addr #1 {
  %6 = alloca i32, align 4
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %6) #2
  store i32 0, ptr %6, align 4, !tbaa !5
  %.not = icmp eq i32 %2, 0
  br i1 %.not, label %._crit_edge, label %.lr.ph.preheader

.lr.ph.preheader:                                 ; preds = %5
  %wide.trip.count = zext i32 %2 to i64
  br label %.lr.ph

.lr.ph:                                           ; preds = %.lr.ph.preheader, %.lr.ph
  %indvars.iv = phi i64 [ 0, %.lr.ph.preheader ], [ %indvars.iv.next, %.lr.ph ]
  %.013 = phi i32 [ 0, %.lr.ph.preheader ], [ %13, %.lr.ph ]
  %7 = getelementptr inbounds { float, float }, ptr %1, i64 %indvars.iv
  %8 = load <2 x float>, ptr %7, align 4
  %9 = zext i32 %.013 to i64
  %10 = getelementptr inbounds { float, float }, ptr %3, i64 %9
  %11 = call i32 @symsync_crcf_step(ptr noundef %0, <2 x float> noundef %8, ptr noundef %10, ptr noundef nonnull %6)
  %12 = load i32, ptr %6, align 4, !tbaa !5
  %13 = add i32 %12, %.013
  %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 %._crit_edge, label %.lr.ph, !llvm.loop !9

._crit_edge:                                      ; preds = %.lr.ph, %5
  %.0.lcssa = phi i32 [ 0, %5 ], [ %13, %.lr.ph ]
  store i32 %.0.lcssa, ptr %4, align 4, !tbaa !5
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %6) #2
  ret i32 0
}

; Function Attrs: nounwind uwtable
declare dso_local i32 @symsync_crcf_step(ptr noundef, <2 x float> noundef, ptr noundef, ptr noundef) local_unnamed_addr #1

attributes #0 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { nounwind uwtable "min-legal-vector-width"="64" "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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: CorrelatedValuePropagationPass,EarlyCSEPass,GVNPass,GlobalOptPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,ReassociatePass,SLPVectorizerPass,SROAPass,SimplifyCFGPass