; LLVM IR from jgaeddert/liquid-dsp :: sandbox (modem_demodulate_arb_gentab)

; 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"

@stderr = external global ptr, align 8
@.str.49 = external hidden unnamed_addr constant [68 x i8], align 1
@.str.50 = external hidden unnamed_addr constant [71 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: nounwind
declare i32 @fprintf(ptr noundef, ptr noundef, ...) #1

; Function Attrs: noreturn nounwind
declare void @exit(i32 noundef) #2

; Function Attrs: nounwind uwtable
define dso_local void @modemcf_arbref_search(ptr noundef %0, i32 noundef %1, ptr noundef %2, i32 noundef %3, ptr noundef %4, i32 noundef %5) #3 {
  %7 = alloca ptr, align 8
  %8 = alloca i32, align 4
  %9 = alloca ptr, align 8
  %10 = alloca i32, align 4
  %11 = alloca ptr, align 8
  %12 = alloca i32, align 4
  %13 = alloca i32, align 4
  %14 = alloca { float, float }, align 4
  store ptr %0, ptr %7, align 8, !tbaa !5
  store i32 %1, ptr %8, align 4, !tbaa !9
  store ptr %2, ptr %9, align 8, !tbaa !5
  store i32 %3, ptr %10, align 4, !tbaa !9
  store ptr %4, ptr %11, align 8, !tbaa !5
  store i32 %5, ptr %12, align 4, !tbaa !9
  %15 = load i32, ptr %8, align 4, !tbaa !9
  %16 = icmp ult i32 %15, 2
  br i1 %16, label %17, label %20

17:                                               ; preds = %6
  %18 = load ptr, ptr @stderr, align 8, !tbaa !5
  %19 = call i32 (ptr, ptr, ...) @fprintf(ptr noundef %18, ptr noundef @.str.49) #4
  call void @exit(i32 noundef 1) #5
  unreachable

20:                                               ; preds = %6
  %21 = load i32, ptr %12, align 4, !tbaa !9
  %22 = load i32, ptr %8, align 4, !tbaa !9
  %23 = icmp ugt i32 %21, %22
  br i1 %23, label %24, label %27

24:                                               ; preds = %20
  %25 = load ptr, ptr @stderr, align 8, !tbaa !5
  %26 = call i32 (ptr, ptr, ...) @fprintf(ptr noundef %25, ptr noundef @.str.50) #4
  call void @exit(i32 noundef 1) #5
  unreachable

27:                                               ; preds = %20
  br label %28

28:                                               ; preds = %27
  call void @llvm.lifetime.start.p0(i64 4, ptr %13) #4
  store i32 0, ptr %13, align 4, !tbaa !9
  br label %29

29:                                               ; preds = %54, %28
  %30 = load i32, ptr %13, align 4, !tbaa !9
  %31 = load i32, ptr %10, align 4, !tbaa !9
  %32 = icmp ult i32 %30, %31
  br i1 %32, label %33, label %57

33:                                               ; preds = %29
  %34 = load ptr, ptr %7, align 8, !tbaa !5
  %35 = load i32, ptr %8, align 4, !tbaa !9
  %36 = load ptr, ptr %9, align 8, !tbaa !5
  %37 = load i32, ptr %13, align 4, !tbaa !9
  %38 = zext i32 %37 to i64
  %39 = getelementptr inbounds { float, float }, ptr %36, i64 %38
  %40 = getelementptr inbounds { float, float }, ptr %39, i32 0, i32 0
  %41 = load float, ptr %40, align 4
  %42 = getelementptr inbounds { float, float }, ptr %39, i32 0, i32 1
  %43 = load float, ptr %42, align 4
  %44 = load ptr, ptr %11, align 8, !tbaa !5
  %45 = load i32, ptr %12, align 4, !tbaa !9
  %46 = load i32, ptr %13, align 4, !tbaa !9
  %47 = mul i32 %45, %46
  %48 = zext i32 %47 to i64
  %49 = getelementptr inbounds i8, ptr %44, i64 %48
  %50 = load i32, ptr %12, align 4, !tbaa !9
  %51 = getelementptr inbounds { float, float }, ptr %14, i32 0, i32 0
  %52 = getelementptr inbounds { float, float }, ptr %14, i32 0, i32 1
  store float %41, ptr %51, align 4
  store float %43, ptr %52, align 4
  %53 = load <2 x float>, ptr %14, align 4
  call void @modemcf_arbref_search_point(ptr noundef %34, i32 noundef %35, <2 x float> noundef %53, ptr noundef %49, i32 noundef %50)
  br label %54

54:                                               ; preds = %33
  %55 = load i32, ptr %13, align 4, !tbaa !9
  %56 = add i32 %55, 1
  store i32 %56, ptr %13, align 4, !tbaa !9
  br label %29, !llvm.loop !11

57:                                               ; preds = %29
  call void @llvm.lifetime.end.p0(i64 4, ptr %13) #4
  ret void
}

; 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 void @modemcf_arbref_search_point(ptr noundef, i32 noundef, <2 x float> noundef, ptr noundef, i32 noundef) #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 = { noreturn 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 #3 = { 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 #4 = { nounwind }
attributes #5 = { noreturn 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"

@stderr = external local_unnamed_addr global ptr, align 8
@.str.49 = external hidden unnamed_addr constant [68 x i8], align 1
@.str.50 = external hidden unnamed_addr constant [71 x i8], align 1

; Function Attrs: nofree nounwind
declare noundef i32 @fprintf(ptr nocapture noundef, ptr nocapture noundef readonly, ...) local_unnamed_addr #0

; Function Attrs: noreturn nounwind
declare void @exit(i32 noundef) local_unnamed_addr #1

; Function Attrs: nounwind uwtable
define dso_local void @modemcf_arbref_search(ptr noundef %0, i32 noundef %1, ptr nocapture noundef readonly %2, i32 noundef %3, ptr noundef %4, i32 noundef %5) local_unnamed_addr #2 {
  %7 = icmp ult i32 %1, 2
  br i1 %7, label %8, label %11

8:                                                ; preds = %6
  %9 = load ptr, ptr @stderr, align 8, !tbaa !5
  %10 = tail call i32 (ptr, ptr, ...) @fprintf(ptr noundef %9, ptr noundef nonnull @.str.49) #3
  tail call void @exit(i32 noundef 1) #4
  unreachable

11:                                               ; preds = %6
  %12 = icmp ugt i32 %5, %1
  br i1 %12, label %13, label %.preheader

.preheader:                                       ; preds = %11
  %.not = icmp eq i32 %3, 0
  br i1 %.not, label %._crit_edge, label %.lr.ph.preheader

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

13:                                               ; preds = %11
  %14 = load ptr, ptr @stderr, align 8, !tbaa !5
  %15 = tail call i32 (ptr, ptr, ...) @fprintf(ptr noundef %14, ptr noundef nonnull @.str.50) #3
  tail call void @exit(i32 noundef 1) #4
  unreachable

.lr.ph:                                           ; preds = %.lr.ph.preheader, %.lr.ph
  %indvars.iv = phi i64 [ 0, %.lr.ph.preheader ], [ %indvars.iv.next, %.lr.ph ]
  %16 = getelementptr inbounds { float, float }, ptr %2, i64 %indvars.iv
  %17 = load <2 x float>, ptr %16, align 4
  %18 = trunc nuw i64 %indvars.iv to i32
  %19 = mul i32 %18, %5
  %20 = zext i32 %19 to i64
  %21 = getelementptr inbounds i8, ptr %4, i64 %20
  tail call void @modemcf_arbref_search_point(ptr noundef %0, i32 noundef %1, <2 x float> noundef %17, ptr noundef %21, i32 noundef %5)
  %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, %.preheader
  ret void
}

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

attributes #0 = { nofree 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 #1 = { noreturn 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"="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 = { cold nounwind }
attributes #4 = { noreturn 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 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}


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