; LLVM IR from glaretechnologies/substrata :: opus/opus-1.3.1/celt (entenc)

; 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: nounwind uwtable
declare dso_local void @ec_encode(ptr noundef, i32 noundef, i32 noundef, i32 noundef) #0

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: nounwind uwtable
define dso_local void @ec_enc_uint(ptr noundef %0, i32 noundef %1, i32 noundef %2) #0 {
  %4 = alloca ptr, align 8
  %5 = alloca i32, align 4
  %6 = alloca i32, align 4
  %7 = alloca i32, align 4
  %8 = alloca i32, align 4
  %9 = alloca i32, align 4
  store ptr %0, ptr %4, align 8, !tbaa !5
  store i32 %1, ptr %5, align 4, !tbaa !9
  store i32 %2, ptr %6, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #3
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #3
  call void @llvm.lifetime.start.p0(i64 4, ptr %9) #3
  %10 = load i32, ptr %6, align 4, !tbaa !9
  %11 = add i32 %10, -1
  store i32 %11, ptr %6, align 4, !tbaa !9
  %12 = load i32, ptr %6, align 4, !tbaa !9
  %13 = call i32 @llvm.ctlz.i32(i32 %12, i1 true)
  %14 = sub nsw i32 32, %13
  store i32 %14, ptr %9, align 4, !tbaa !9
  %15 = load i32, ptr %9, align 4, !tbaa !9
  %16 = icmp sgt i32 %15, 8
  br i1 %16, label %17, label %39

17:                                               ; preds = %3
  %18 = load i32, ptr %9, align 4, !tbaa !9
  %19 = sub nsw i32 %18, 8
  store i32 %19, ptr %9, align 4, !tbaa !9
  %20 = load i32, ptr %6, align 4, !tbaa !9
  %21 = load i32, ptr %9, align 4, !tbaa !9
  %22 = lshr i32 %20, %21
  %23 = add i32 %22, 1
  store i32 %23, ptr %7, align 4, !tbaa !9
  %24 = load i32, ptr %5, align 4, !tbaa !9
  %25 = load i32, ptr %9, align 4, !tbaa !9
  %26 = lshr i32 %24, %25
  store i32 %26, ptr %8, align 4, !tbaa !9
  %27 = load ptr, ptr %4, align 8, !tbaa !5
  %28 = load i32, ptr %8, align 4, !tbaa !9
  %29 = load i32, ptr %8, align 4, !tbaa !9
  %30 = add i32 %29, 1
  %31 = load i32, ptr %7, align 4, !tbaa !9
  call void @ec_encode(ptr noundef %27, i32 noundef %28, i32 noundef %30, i32 noundef %31)
  %32 = load ptr, ptr %4, align 8, !tbaa !5
  %33 = load i32, ptr %5, align 4, !tbaa !9
  %34 = load i32, ptr %9, align 4, !tbaa !9
  %35 = shl i32 1, %34
  %36 = sub i32 %35, 1
  %37 = and i32 %33, %36
  %38 = load i32, ptr %9, align 4, !tbaa !9
  call void @ec_enc_bits(ptr noundef %32, i32 noundef %37, i32 noundef %38)
  br label %46

39:                                               ; preds = %3
  %40 = load ptr, ptr %4, align 8, !tbaa !5
  %41 = load i32, ptr %5, align 4, !tbaa !9
  %42 = load i32, ptr %5, align 4, !tbaa !9
  %43 = add i32 %42, 1
  %44 = load i32, ptr %6, align 4, !tbaa !9
  %45 = add i32 %44, 1
  call void @ec_encode(ptr noundef %40, i32 noundef %41, i32 noundef %43, i32 noundef %45)
  br label %46

46:                                               ; preds = %39, %17
  call void @llvm.lifetime.end.p0(i64 4, ptr %9) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #3
  ret void
}

; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare i32 @llvm.ctlz.i32(i32, i1 immarg) #2

; Function Attrs: nounwind uwtable
declare dso_local void @ec_enc_bits(ptr noundef, i32 noundef, i32 noundef) #0

attributes #0 = { 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 #1 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { 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)"}
!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}


; 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: nounwind uwtable
declare dso_local void @ec_encode(ptr noundef, i32 noundef, i32 noundef, i32 noundef) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
define dso_local void @ec_enc_uint(ptr noundef %0, i32 noundef %1, i32 noundef %2) local_unnamed_addr #0 {
  %4 = add i32 %2, -1
  %5 = icmp ugt i32 %4, 255
  br i1 %5, label %6, label %15

6:                                                ; preds = %3
  %7 = tail call range(i32 0, 33) i32 @llvm.ctlz.i32(i32 %4, i1 true)
  %8 = sub nuw nsw i32 24, %7
  %9 = lshr i32 %4, %8
  %10 = add nuw i32 %9, 1
  %11 = lshr i32 %1, %8
  %12 = add nuw i32 %11, 1
  tail call void @ec_encode(ptr noundef %0, i32 noundef %11, i32 noundef %12, i32 noundef %10)
  %notmask = shl nsw i32 -1, %8
  %13 = xor i32 %notmask, -1
  %14 = and i32 %13, %1
  tail call void @ec_enc_bits(ptr noundef %0, i32 noundef %14, i32 noundef %8)
  br label %17

15:                                               ; preds = %3
  %16 = add i32 %1, 1
  tail call void @ec_encode(ptr noundef %0, i32 noundef %1, i32 noundef %16, i32 noundef %2)
  br label %17

17:                                               ; preds = %15, %6
  ret void
}

; Function Attrs: mustprogress nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare i32 @llvm.ctlz.i32(i32, i1 immarg) #1

; Function Attrs: nounwind uwtable
declare dso_local void @ec_enc_bits(ptr noundef, i32 noundef, i32 noundef) local_unnamed_addr #0

attributes #0 = { 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 #1 = { mustprogress nocallback nofree nosync nounwind speculatable willreturn memory(none) }

!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: CorrelatedValuePropagationPass,EarlyCSEPass,GlobalOptPass,IPSCCPPass,InferFunctionAttrsPass,InstCombinePass,SROAPass,TailCallElimPass