; LLVM IR from jgaeddert/liquid-dsp :: examples (modem_soft_example)

; 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.3 = external hidden unnamed_addr constant [4 x i8], align 1
@.str.4 = external hidden unnamed_addr constant [2 x i8], align 1

declare i32 @printf(ptr noundef, ...) #0

; Function Attrs: nounwind uwtable
define dso_local void @print_bitstring(i32 noundef %0, i32 noundef %1, i32 noundef %2) #1 {
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  %6 = alloca i32, align 4
  %7 = alloca i32, align 4
  store i32 %0, ptr %4, align 4, !tbaa !5
  store i32 %1, ptr %5, align 4, !tbaa !5
  store i32 %2, ptr %6, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #3
  store i32 0, ptr %7, align 4, !tbaa !5
  br label %8

8:                                                ; preds = %21, %3
  %9 = load i32, ptr %7, align 4, !tbaa !5
  %10 = load i32, ptr %5, align 4, !tbaa !5
  %11 = icmp ult i32 %9, %10
  br i1 %11, label %12, label %24

12:                                               ; preds = %8
  %13 = load i32, ptr %4, align 4, !tbaa !5
  %14 = load i32, ptr %5, align 4, !tbaa !5
  %15 = load i32, ptr %7, align 4, !tbaa !5
  %16 = sub i32 %14, %15
  %17 = sub i32 %16, 1
  %18 = lshr i32 %13, %17
  %19 = and i32 %18, 1
  %20 = call i32 (ptr, ...) @printf(ptr noundef @.str.3, i32 noundef %19)
  br label %21

21:                                               ; preds = %12
  %22 = load i32, ptr %7, align 4, !tbaa !5
  %23 = add i32 %22, 1
  store i32 %23, ptr %7, align 4, !tbaa !5
  br label %8, !llvm.loop !9

24:                                               ; preds = %8
  %25 = load i32, ptr %5, align 4, !tbaa !5
  store i32 %25, ptr %7, align 4, !tbaa !5
  br label %26

26:                                               ; preds = %32, %24
  %27 = load i32, ptr %7, align 4, !tbaa !5
  %28 = load i32, ptr %6, align 4, !tbaa !5
  %29 = icmp ult i32 %27, %28
  br i1 %29, label %30, label %35

30:                                               ; preds = %26
  %31 = call i32 (ptr, ...) @printf(ptr noundef @.str.4)
  br label %32

32:                                               ; preds = %30
  %33 = load i32, ptr %7, align 4, !tbaa !5
  %34 = add i32 %33, 1
  store i32 %34, ptr %7, align 4, !tbaa !5
  br label %26, !llvm.loop !11

35:                                               ; preds = %26
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #3
  ret void
}

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #2

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #2

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 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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 = !{!"int", !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, !10}


; 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.3 = external hidden unnamed_addr constant [4 x i8], align 1
@.str.4 = external hidden unnamed_addr constant [2 x i8], align 1

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

; Function Attrs: nofree nounwind uwtable
define dso_local void @print_bitstring(i32 noundef %0, i32 noundef %1, i32 noundef %2) local_unnamed_addr #1 {
  %.not = icmp eq i32 %1, 0
  br i1 %.not, label %.preheader, label %.lr.ph

.preheader:                                       ; preds = %.lr.ph, %3
  %4 = icmp ult i32 %1, %2
  br i1 %4, label %.lr.ph14, label %._crit_edge

.lr.ph:                                           ; preds = %3, %.lr.ph
  %.012 = phi i32 [ %10, %.lr.ph ], [ 0, %3 ]
  %5 = xor i32 %.012, -1
  %6 = add i32 %5, %1
  %7 = lshr i32 %0, %6
  %8 = and i32 %7, 1
  %9 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.3, i32 noundef %8)
  %10 = add nuw i32 %.012, 1
  %exitcond.not = icmp eq i32 %10, %1
  br i1 %exitcond.not, label %.preheader, label %.lr.ph, !llvm.loop !5

.lr.ph14:                                         ; preds = %.preheader, %.lr.ph14
  %.113 = phi i32 [ %12, %.lr.ph14 ], [ %1, %.preheader ]
  %11 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.4)
  %12 = add i32 %.113, 1
  %exitcond15.not = icmp eq i32 %12, %2
  br i1 %exitcond15.not, label %._crit_edge, label %.lr.ph14, !llvm.loop !7

._crit_edge:                                      ; preds = %.lr.ph14, %.preheader
  ret void
}

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 = { nofree 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" }

!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 = distinct !{!5, !6}
!6 = !{!"llvm.loop.mustprogress"}
!7 = distinct !{!7, !6}


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