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

; 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
declare float @powf(float noundef, float noundef) #1

; Function Attrs: nounwind uwtable
define dso_local float @kaiser_beta_As(float noundef %0) #2 {
  %2 = alloca float, align 4
  %3 = alloca float, align 4
  store float %0, ptr %2, align 4, !tbaa !5
  %4 = load float, ptr %2, align 4, !tbaa !5
  %5 = call float @llvm.fabs.f32(float %4)
  store float %5, ptr %2, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #4
  %6 = load float, ptr %2, align 4, !tbaa !5
  %7 = fcmp ogt float %6, 5.000000e+01
  br i1 %7, label %8, label %12

8:                                                ; preds = %1
  %9 = load float, ptr %2, align 4, !tbaa !5
  %10 = fsub float %9, 0x4021666660000000
  %11 = fmul float 0x3FBC361140000000, %10
  store float %11, ptr %3, align 4, !tbaa !5
  br label %28

12:                                               ; preds = %1
  %13 = load float, ptr %2, align 4, !tbaa !5
  %14 = fcmp ogt float %13, 2.100000e+01
  br i1 %14, label %15, label %26

15:                                               ; preds = %12
  %16 = load float, ptr %2, align 4, !tbaa !5
  %17 = fsub float %16, 2.100000e+01
  %18 = call float @powf(float noundef %17, float noundef 0x3FD99999A0000000) #4
  %19 = fpext float %18 to double
  %20 = load float, ptr %2, align 4, !tbaa !5
  %21 = fsub float %20, 2.100000e+01
  %22 = fmul float 0x3FB4302B40000000, %21
  %23 = fpext float %22 to double
  %24 = call double @llvm.fmuladd.f64(double 5.842000e-01, double %19, double %23)
  %25 = fptrunc double %24 to float
  store float %25, ptr %3, align 4, !tbaa !5
  br label %27

26:                                               ; preds = %12
  store float 0.000000e+00, ptr %3, align 4, !tbaa !5
  br label %27

27:                                               ; preds = %26, %15
  br label %28

28:                                               ; preds = %27, %8
  %29 = load float, ptr %3, align 4, !tbaa !5
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #4
  ret float %29
}

; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare float @llvm.fabs.f32(float) #3

; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare double @llvm.fmuladd.f64(double, double, double) #3

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { nounwind "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 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }
attributes #4 = { 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 = !{!"float", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}


; 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 nofree nounwind willreturn memory(write)
declare float @powf(float noundef, float noundef) local_unnamed_addr #0

; Function Attrs: mustprogress nofree nounwind willreturn memory(write) uwtable
define dso_local float @kaiser_beta_As(float noundef %0) local_unnamed_addr #1 {
  %2 = tail call float @llvm.fabs.f32(float %0)
  %3 = fcmp ogt float %2, 5.000000e+01
  br i1 %3, label %4, label %7

4:                                                ; preds = %1
  %5 = fadd float %2, 0xC021666660000000
  %6 = fmul float %5, 0x3FBC361140000000
  br label %17

7:                                                ; preds = %1
  %8 = fcmp ogt float %2, 2.100000e+01
  br i1 %8, label %9, label %17

9:                                                ; preds = %7
  %10 = fadd float %2, -2.100000e+01
  %11 = tail call float @powf(float noundef %10, float noundef 0x3FD99999A0000000) #3
  %12 = fpext float %11 to double
  %13 = fmul float %10, 0x3FB4302B40000000
  %14 = fpext float %13 to double
  %15 = tail call double @llvm.fmuladd.f64(double %12, double 5.842000e-01, double %14)
  %16 = fptrunc double %15 to float
  br label %17

17:                                               ; preds = %7, %9, %4
  %.0 = phi float [ %6, %4 ], [ %16, %9 ], [ 0.000000e+00, %7 ]
  ret float %.0
}

; Function Attrs: mustprogress nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare float @llvm.fabs.f32(float) #2

; Function Attrs: mustprogress nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare double @llvm.fmuladd.f64(double, double, double) #2

attributes #0 = { mustprogress nofree nounwind willreturn memory(write) "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 = { mustprogress nofree nounwind willreturn memory(write) 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 = { mustprogress nocallback nofree nosync nounwind speculatable willreturn memory(none) }
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)"}


; Effective O3 passes: EarlyCSEPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass