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

; 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"

%struct.ec_ctx = type { ptr, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32 }

; Function Attrs: nounwind uwtable
declare hidden void @ec_dec_normalize(ptr 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_dec_update(ptr noundef %0, i32 noundef %1, i32 noundef %2, i32 noundef %3) #0 {
  %5 = alloca ptr, align 8
  %6 = alloca i32, align 4
  %7 = alloca i32, align 4
  %8 = alloca i32, align 4
  %9 = alloca i32, align 4
  store ptr %0, ptr %5, align 8, !tbaa !5
  store i32 %1, ptr %6, align 4, !tbaa !9
  store i32 %2, ptr %7, align 4, !tbaa !9
  store i32 %3, ptr %8, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %9) #2
  %10 = load ptr, ptr %5, align 8, !tbaa !5
  %11 = getelementptr inbounds %struct.ec_ctx, ptr %10, i32 0, i32 9
  %12 = load i32, ptr %11, align 8, !tbaa !11
  %13 = load i32, ptr %8, align 4, !tbaa !9
  %14 = load i32, ptr %7, align 4, !tbaa !9
  %15 = sub i32 %13, %14
  %16 = mul i32 %12, %15
  store i32 %16, ptr %9, align 4, !tbaa !9
  %17 = load i32, ptr %9, align 4, !tbaa !9
  %18 = load ptr, ptr %5, align 8, !tbaa !5
  %19 = getelementptr inbounds %struct.ec_ctx, ptr %18, i32 0, i32 8
  %20 = load i32, ptr %19, align 4, !tbaa !13
  %21 = sub i32 %20, %17
  store i32 %21, ptr %19, align 4, !tbaa !13
  %22 = load i32, ptr %6, align 4, !tbaa !9
  %23 = icmp ugt i32 %22, 0
  br i1 %23, label %24, label %32

24:                                               ; preds = %4
  %25 = load ptr, ptr %5, align 8, !tbaa !5
  %26 = getelementptr inbounds %struct.ec_ctx, ptr %25, i32 0, i32 9
  %27 = load i32, ptr %26, align 8, !tbaa !11
  %28 = load i32, ptr %7, align 4, !tbaa !9
  %29 = load i32, ptr %6, align 4, !tbaa !9
  %30 = sub i32 %28, %29
  %31 = mul i32 %27, %30
  br label %38

32:                                               ; preds = %4
  %33 = load ptr, ptr %5, align 8, !tbaa !5
  %34 = getelementptr inbounds %struct.ec_ctx, ptr %33, i32 0, i32 7
  %35 = load i32, ptr %34, align 8, !tbaa !14
  %36 = load i32, ptr %9, align 4, !tbaa !9
  %37 = sub i32 %35, %36
  br label %38

38:                                               ; preds = %32, %24
  %39 = phi i32 [ %31, %24 ], [ %37, %32 ]
  %40 = load ptr, ptr %5, align 8, !tbaa !5
  %41 = getelementptr inbounds %struct.ec_ctx, ptr %40, i32 0, i32 7
  store i32 %39, ptr %41, align 8, !tbaa !14
  %42 = load ptr, ptr %5, align 8, !tbaa !5
  call void @ec_dec_normalize(ptr noundef %42)
  call void @llvm.lifetime.end.p0(i64 4, ptr %9) #2
  ret void
}

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 = { 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, !10, i64 40}
!12 = !{!"ec_ctx", !6, i64 0, !10, i64 8, !10, i64 12, !10, i64 16, !10, i64 20, !10, i64 24, !10, i64 28, !10, i64 32, !10, i64 36, !10, i64 40, !10, i64 44, !10, i64 48}
!13 = !{!12, !10, i64 36}
!14 = !{!12, !10, i64 32}


; 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 hidden void @ec_dec_normalize(ptr noundef) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
define dso_local void @ec_dec_update(ptr noundef %0, i32 noundef %1, i32 noundef %2, i32 noundef %3) local_unnamed_addr #0 {
  %5 = getelementptr inbounds i8, ptr %0, i64 40
  %6 = load i32, ptr %5, align 8, !tbaa !5
  %7 = sub i32 %3, %2
  %8 = mul i32 %6, %7
  %9 = getelementptr inbounds i8, ptr %0, i64 36
  %10 = load i32, ptr %9, align 4, !tbaa !11
  %11 = sub i32 %10, %8
  store i32 %11, ptr %9, align 4, !tbaa !11
  %.not = icmp eq i32 %1, 0
  br i1 %.not, label %15, label %12

12:                                               ; preds = %4
  %13 = sub i32 %2, %1
  %14 = mul i32 %6, %13
  br label %19

15:                                               ; preds = %4
  %16 = getelementptr inbounds i8, ptr %0, i64 32
  %17 = load i32, ptr %16, align 8, !tbaa !12
  %18 = sub i32 %17, %8
  br label %19

19:                                               ; preds = %15, %12
  %20 = phi i32 [ %14, %12 ], [ %18, %15 ]
  %21 = getelementptr inbounds i8, ptr %0, i64 32
  store i32 %20, ptr %21, align 8, !tbaa !12
  tail call void @ec_dec_normalize(ptr noundef nonnull %0)
  ret void
}

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" }

!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, !10, i64 40}
!6 = !{!"ec_ctx", !7, i64 0, !10, i64 8, !10, i64 12, !10, i64 16, !10, i64 20, !10, i64 24, !10, i64 28, !10, i64 32, !10, i64 36, !10, i64 40, !10, i64 44, !10, i64 48}
!7 = !{!"any pointer", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!"int", !8, i64 0}
!11 = !{!6, !10, i64 36}
!12 = !{!6, !10, i64 32}


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