; LLVM IR from jgaeddert/liquid-dsp :: src/agc/src (agc_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 = external hidden unnamed_addr constant [78 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [5 x i8], align 1
@.str.13 = external hidden unnamed_addr constant [66 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 @agc_rrrf_set_signal_level(ptr noundef, float noundef) #2

; Function Attrs: nounwind uwtable
define dso_local i32 @agc_rrrf_init(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 float, 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
  %10 = load i32, ptr %7, align 4, !tbaa !9
  %11 = icmp eq i32 %10, 0
  br i1 %11, label %12, label %14

12:                                               ; preds = %3
  %13 = call i32 (i32, ptr, i32, ptr, ...) @liquid_error_fl(i32 noundef 3, ptr noundef @.str, i32 noundef 342, ptr noundef @.str.13, ptr noundef @.str.2)
  store i32 %13, ptr %4, align 4
  br label %46

14:                                               ; preds = %3
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #5
  call void @llvm.lifetime.start.p0(i64 4, ptr %9) #5
  store float 0.000000e+00, ptr %9, align 4, !tbaa !11
  store i32 0, ptr %8, align 4, !tbaa !9
  br label %15

15:                                               ; preds = %33, %14
  %16 = load i32, ptr %8, align 4, !tbaa !9
  %17 = load i32, ptr %7, align 4, !tbaa !9
  %18 = icmp ult i32 %16, %17
  br i1 %18, label %19, label %36

19:                                               ; preds = %15
  %20 = load ptr, ptr %6, align 8, !tbaa !5
  %21 = load i32, ptr %8, align 4, !tbaa !9
  %22 = zext i32 %21 to i64
  %23 = getelementptr inbounds float, ptr %20, i64 %22
  %24 = load float, ptr %23, align 4, !tbaa !11
  %25 = load ptr, ptr %6, align 8, !tbaa !5
  %26 = load i32, ptr %8, align 4, !tbaa !9
  %27 = zext i32 %26 to i64
  %28 = getelementptr inbounds float, ptr %25, i64 %27
  %29 = load float, ptr %28, align 4, !tbaa !11
  %30 = fmul float %24, -0.000000e+00
  %31 = load float, ptr %9, align 4, !tbaa !11
  %32 = call float @llvm.fmuladd.f32(float %24, float %29, float %31)
  store float %32, ptr %9, align 4, !tbaa !11
  br label %33

33:                                               ; preds = %19
  %34 = load i32, ptr %8, align 4, !tbaa !9
  %35 = add i32 %34, 1
  store i32 %35, ptr %8, align 4, !tbaa !9
  br label %15, !llvm.loop !13

36:                                               ; preds = %15
  %37 = load float, ptr %9, align 4, !tbaa !11
  %38 = load i32, ptr %7, align 4, !tbaa !9
  %39 = uitofp i32 %38 to float
  %40 = fdiv float %37, %39
  %41 = call float @sqrtf(float noundef %40) #5
  %42 = fadd float %41, 0x3C9CD2B2A0000000
  store float %42, ptr %9, align 4, !tbaa !11
  %43 = load ptr, ptr %5, align 8, !tbaa !5
  %44 = load float, ptr %9, align 4, !tbaa !11
  %45 = call i32 @agc_rrrf_set_signal_level(ptr noundef %43, float noundef %44)
  store i32 0, ptr %4, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %9) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #5
  br label %46

46:                                               ; preds = %36, %12
  %47 = load i32, ptr %4, align 4
  ret i32 %47
}

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

; Function Attrs: nounwind
declare float @sqrtf(float noundef) #4

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 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }
attributes #4 = { 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 #5 = { 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 = external hidden unnamed_addr constant [78 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [5 x i8], align 1
@.str.13 = external hidden unnamed_addr constant [66 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 @agc_rrrf_set_signal_level(ptr noundef, float noundef) local_unnamed_addr #1

; Function Attrs: nounwind uwtable
define dso_local i32 @agc_rrrf_init(ptr noundef %0, ptr nocapture noundef readonly %1, i32 noundef %2) local_unnamed_addr #1 {
  %4 = icmp eq i32 %2, 0
  br i1 %4, label %6, label %.preheader.preheader

.preheader.preheader:                             ; preds = %3
  %wide.trip.count = zext i32 %2 to i64
  %xtraiter = and i64 %wide.trip.count, 3
  %5 = icmp ult i32 %2, 4
  br i1 %5, label %.unr-lcssa, label %.preheader.preheader.new

.preheader.preheader.new:                         ; preds = %.preheader.preheader
  %unroll_iter = and i64 %wide.trip.count, 4294967292
  br label %.preheader

6:                                                ; preds = %3
  %7 = tail call i32 (i32, ptr, i32, ptr, ...) @liquid_error_fl(i32 noundef 3, ptr noundef nonnull @.str, i32 noundef 342, ptr noundef nonnull @.str.13, ptr noundef nonnull @.str.2) #4
  br label %28

.preheader:                                       ; preds = %.preheader, %.preheader.preheader.new
  %indvars.iv = phi i64 [ 0, %.preheader.preheader.new ], [ %indvars.iv.next.3, %.preheader ]
  %.017 = phi float [ 0.000000e+00, %.preheader.preheader.new ], [ %19, %.preheader ]
  %niter = phi i64 [ 0, %.preheader.preheader.new ], [ %niter.next.3, %.preheader ]
  %8 = getelementptr inbounds float, ptr %1, i64 %indvars.iv
  %9 = load float, ptr %8, align 4, !tbaa !5
  %10 = tail call float @llvm.fmuladd.f32(float %9, float %9, float %.017)
  %indvars.iv.next = or disjoint i64 %indvars.iv, 1
  %11 = getelementptr inbounds float, ptr %1, i64 %indvars.iv.next
  %12 = load float, ptr %11, align 4, !tbaa !5
  %13 = tail call float @llvm.fmuladd.f32(float %12, float %12, float %10)
  %indvars.iv.next.1 = or disjoint i64 %indvars.iv, 2
  %14 = getelementptr inbounds float, ptr %1, i64 %indvars.iv.next.1
  %15 = load float, ptr %14, align 4, !tbaa !5
  %16 = tail call float @llvm.fmuladd.f32(float %15, float %15, float %13)
  %indvars.iv.next.2 = or disjoint i64 %indvars.iv, 3
  %17 = getelementptr inbounds float, ptr %1, i64 %indvars.iv.next.2
  %18 = load float, ptr %17, align 4, !tbaa !5
  %19 = tail call float @llvm.fmuladd.f32(float %18, float %18, float %16)
  %indvars.iv.next.3 = add nuw nsw i64 %indvars.iv, 4
  %niter.next.3 = add i64 %niter, 4
  %niter.ncmp.3 = icmp eq i64 %niter.next.3, %unroll_iter
  br i1 %niter.ncmp.3, label %.unr-lcssa, label %.preheader, !llvm.loop !9

.unr-lcssa:                                       ; preds = %.preheader, %.preheader.preheader
  %.lcssa.ph = phi float [ poison, %.preheader.preheader ], [ %19, %.preheader ]
  %indvars.iv.unr = phi i64 [ 0, %.preheader.preheader ], [ %indvars.iv.next.3, %.preheader ]
  %.017.unr = phi float [ 0.000000e+00, %.preheader.preheader ], [ %19, %.preheader ]
  %lcmp.mod.not = icmp eq i64 %xtraiter, 0
  br i1 %lcmp.mod.not, label %.epilog-lcssa, label %.preheader.epil

.preheader.epil:                                  ; preds = %.unr-lcssa, %.preheader.epil
  %indvars.iv.epil = phi i64 [ %indvars.iv.next.epil, %.preheader.epil ], [ %indvars.iv.unr, %.unr-lcssa ]
  %.017.epil = phi float [ %22, %.preheader.epil ], [ %.017.unr, %.unr-lcssa ]
  %epil.iter = phi i64 [ %epil.iter.next, %.preheader.epil ], [ 0, %.unr-lcssa ]
  %20 = getelementptr inbounds float, ptr %1, i64 %indvars.iv.epil
  %21 = load float, ptr %20, align 4, !tbaa !5
  %22 = tail call float @llvm.fmuladd.f32(float %21, float %21, float %.017.epil)
  %indvars.iv.next.epil = add nuw nsw i64 %indvars.iv.epil, 1
  %epil.iter.next = add i64 %epil.iter, 1
  %epil.iter.cmp.not = icmp eq i64 %epil.iter.next, %xtraiter
  br i1 %epil.iter.cmp.not, label %.epilog-lcssa, label %.preheader.epil, !llvm.loop !11

.epilog-lcssa:                                    ; preds = %.preheader.epil, %.unr-lcssa
  %.lcssa = phi float [ %.lcssa.ph, %.unr-lcssa ], [ %22, %.preheader.epil ]
  %23 = uitofp i32 %2 to float
  %24 = fdiv float %.lcssa, %23
  %25 = tail call float @sqrtf(float noundef %24) #4
  %26 = fadd float %25, 0x3C9CD2B2A0000000
  %27 = tail call i32 @agc_rrrf_set_signal_level(ptr noundef %0, float noundef %26)
  br label %28

28:                                               ; preds = %.epilog-lcssa, %6
  %.014 = phi i32 [ %7, %6 ], [ 0, %.epilog-lcssa ]
  ret i32 %.014
}

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

; Function Attrs: mustprogress nofree nounwind willreturn memory(write)
declare float @sqrtf(float noundef) local_unnamed_addr #3

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 = { mustprogress nocallback nofree nosync nounwind speculatable willreturn memory(none) }
attributes #3 = { 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 #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"}
!9 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}
!11 = distinct !{!11, !12}
!12 = !{!"llvm.loop.unroll.disable"}


; Effective O3 passes: EarlyCSEPass,GVNPass,GlobalOptPass,IPSCCPPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,LCSSAPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass