; LLVM IR from jgaeddert/liquid-dsp :: src/nco/src (nco_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
declare dso_local i32 @nco_crcf_cexpf(ptr noundef, ptr noundef) #1

declare <2 x float> @__mulsc3(float, float, float, float)

; Function Attrs: nounwind uwtable
define dso_local i32 @nco_crcf_mix_down(ptr noundef %0, <2 x float> noundef %1, ptr noundef %2) #2 {
  %4 = alloca { float, float }, align 4
  %5 = alloca ptr, align 8
  %6 = alloca ptr, align 8
  %7 = alloca { float, float }, align 4
  %8 = alloca { float, float }, align 4
  store <2 x float> %1, ptr %4, align 4
  store ptr %0, ptr %5, align 8, !tbaa !5
  store ptr %2, ptr %6, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %7) #3
  %9 = load ptr, ptr %5, align 8, !tbaa !5
  %10 = call i32 @nco_crcf_cexpf(ptr noundef %9, ptr noundef %7)
  %11 = getelementptr inbounds { float, float }, ptr %4, i32 0, i32 0
  %12 = load float, ptr %11, align 4
  %13 = getelementptr inbounds { float, float }, ptr %4, i32 0, i32 1
  %14 = load float, ptr %13, align 4
  %15 = getelementptr inbounds { float, float }, ptr %7, i32 0, i32 0
  %16 = load float, ptr %15, align 4
  %17 = getelementptr inbounds { float, float }, ptr %7, i32 0, i32 1
  %18 = load float, ptr %17, align 4
  %19 = fneg float %18
  %20 = fmul float %12, %16
  %21 = fmul float %14, %19
  %22 = fmul float %12, %19
  %23 = fmul float %14, %16
  %24 = fsub float %20, %21
  %25 = fadd float %22, %23
  %26 = fcmp uno float %24, %24
  br i1 %26, label %27, label %35, !prof !9

27:                                               ; preds = %3
  %28 = fcmp uno float %25, %25
  br i1 %28, label %29, label %35, !prof !9

29:                                               ; preds = %27
  %30 = call <2 x float> @__mulsc3(float noundef %12, float noundef %14, float noundef %16, float noundef %19) #3
  store <2 x float> %30, ptr %8, align 4
  %31 = getelementptr inbounds { float, float }, ptr %8, i32 0, i32 0
  %32 = load float, ptr %31, align 4
  %33 = getelementptr inbounds { float, float }, ptr %8, i32 0, i32 1
  %34 = load float, ptr %33, align 4
  br label %35

35:                                               ; preds = %29, %27, %3
  %36 = phi float [ %24, %3 ], [ %24, %27 ], [ %32, %29 ]
  %37 = phi float [ %25, %3 ], [ %25, %27 ], [ %34, %29 ]
  %38 = load ptr, ptr %6, align 8, !tbaa !5
  %39 = getelementptr inbounds { float, float }, ptr %38, i32 0, i32 0
  %40 = getelementptr inbounds { float, float }, ptr %38, i32 0, i32 1
  store float %36, ptr %39, align 4
  store float %37, ptr %40, align 4
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #3
  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 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 #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 = !{!"branch_weights", i32 1, i32 1048575}


; 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
declare dso_local i32 @nco_crcf_cexpf(ptr noundef, ptr noundef) local_unnamed_addr #1

declare <2 x float> @__mulsc3(float, float, float, float) local_unnamed_addr

; Function Attrs: nounwind uwtable
define dso_local noundef i32 @nco_crcf_mix_down(ptr noundef %0, <2 x float> noundef %1, ptr nocapture noundef writeonly %2) local_unnamed_addr #2 {
  %4 = extractelement <2 x float> %1, i64 1
  %5 = extractelement <2 x float> %1, i64 0
  %6 = alloca { float, float }, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %6) #3
  %7 = call i32 @nco_crcf_cexpf(ptr noundef %0, ptr noundef nonnull %6)
  %8 = load <2 x float>, ptr %6, align 8
  %9 = extractelement <2 x float> %8, i64 1
  %10 = fneg float %9
  %11 = extractelement <2 x float> %8, i64 0
  %12 = fmul float %4, %11
  %13 = fmul <2 x float> %8, %1
  %shift = shufflevector <2 x float> %13, <2 x float> poison, <2 x i32> <i32 1, i32 poison>
  %14 = fadd <2 x float> %13, %shift
  %15 = extractelement <2 x float> %14, i64 0
  %16 = fmul float %5, %9
  %17 = fsub float %12, %16
  %18 = fcmp uno float %15, 0.000000e+00
  br i1 %18, label %19, label %23, !prof !5

19:                                               ; preds = %3
  %20 = fcmp uno float %17, 0.000000e+00
  br i1 %20, label %21, label %23, !prof !5

21:                                               ; preds = %19
  %22 = call <2 x float> @__mulsc3(float noundef %5, float noundef %4, float noundef %11, float noundef %10) #3
  %.sroa.0.0.vec.extract = extractelement <2 x float> %22, i64 0
  %.sroa.0.4.vec.extract = extractelement <2 x float> %22, i64 1
  br label %23

23:                                               ; preds = %21, %19, %3
  %24 = phi float [ %15, %3 ], [ %15, %19 ], [ %.sroa.0.0.vec.extract, %21 ]
  %25 = phi float [ %17, %3 ], [ %17, %19 ], [ %.sroa.0.4.vec.extract, %21 ]
  %26 = getelementptr inbounds i8, ptr %2, i64 4
  store float %24, ptr %2, align 4
  store float %25, ptr %26, align 4
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %6) #3
  ret i32 0
}

attributes #0 = { mustprogress 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 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 #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 = !{!"branch_weights", i32 1, i32 1048575}


; Effective O3 passes: EarlyCSEPass,GlobalOptPass,InferAlignmentPass,InferFunctionAttrsPass,InstCombinePass,PostOrderFunctionAttrsPass,ReassociatePass,SLPVectorizerPass,SROAPass,VectorCombinePass