; LLVM IR from octu0/blurry :: buffer (create_yuv420_buffer)

; 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: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: nounwind allocsize(0)
declare noalias ptr @malloc(i64 noundef) #1

; Function Attrs: nocallback nofree nounwind willreturn memory(argmem: write)
declare void @llvm.memset.p0.i64(ptr nocapture writeonly, i8, i64, i1 immarg) #2

; Function Attrs: nounwind uwtable
declare dso_local void @free_buf(ptr noundef) #3

; Function Attrs: nounwind uwtable
declare dso_local void @init_uint8_buf(ptr noundef, ptr noundef, ptr noundef, i32 noundef) #3

; 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 @init_yuv_dim(ptr noundef, i32 noundef, i32 noundef, i32 noundef) #3

; Function Attrs: nounwind uwtable
define dso_local ptr @create_yuv420_buffer(ptr noundef %0, i32 noundef %1, i32 noundef %2) #3 {
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  %6 = alloca i32, align 4
  %7 = alloca i32, align 4
  %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 i32, align 4
  %15 = alloca i32, align 4
  %16 = 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
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #4
  store i32 2, ptr %8, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %9) #4
  %17 = call noalias ptr @malloc(i64 noundef 56) #5
  store ptr %17, ptr %9, align 8, !tbaa !5
  %18 = load ptr, ptr %9, align 8, !tbaa !5
  %19 = icmp eq ptr %18, null
  br i1 %19, label %20, label %21

20:                                               ; preds = %3
  store ptr null, ptr %4, align 8
  store i32 1, ptr %10, align 4
  br label %57

21:                                               ; preds = %3
  %22 = load ptr, ptr %9, align 8, !tbaa !5
  call void @llvm.memset.p0.i64(ptr align 8 %22, i8 0, i64 56, i1 false)
  call void @llvm.lifetime.start.p0(i64 8, ptr %11) #4
  %23 = load i32, ptr %8, align 4, !tbaa !9
  %24 = sext i32 %23 to i64
  %25 = mul i64 %24, 16
  %26 = call noalias ptr @malloc(i64 noundef %25) #5
  store ptr %26, ptr %11, align 8, !tbaa !5
  %27 = load ptr, ptr %11, align 8, !tbaa !5
  %28 = icmp eq ptr %27, null
  br i1 %28, label %29, label %31

29:                                               ; preds = %21
  %30 = load ptr, ptr %9, align 8, !tbaa !5
  call void @free_buf(ptr noundef %30)
  store ptr null, ptr %4, align 8
  store i32 1, ptr %10, align 4
  br label %56

31:                                               ; preds = %21
  %32 = load ptr, ptr %11, align 8, !tbaa !5
  %33 = load i32, ptr %8, align 4, !tbaa !9
  %34 = sext i32 %33 to i64
  %35 = mul i64 %34, 16
  call void @llvm.memset.p0.i64(ptr align 4 %32, i8 0, i64 %35, i1 false)
  call void @llvm.lifetime.start.p0(i64 4, ptr %12) #4
  %36 = load i32, ptr %6, align 4, !tbaa !9
  store i32 %36, ptr %12, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %13) #4
  %37 = load i32, ptr %7, align 4, !tbaa !9
  store i32 %37, ptr %13, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %14) #4
  %38 = load i32, ptr %13, align 4, !tbaa !9
  %39 = sdiv i32 %38, 2
  store i32 %39, ptr %14, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %15) #4
  %40 = load i32, ptr %13, align 4, !tbaa !9
  %41 = sdiv i32 %40, 2
  store i32 %41, ptr %15, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %16) #4
  %42 = load i32, ptr %12, align 4, !tbaa !9
  store i32 %42, ptr %16, align 4, !tbaa !9
  %43 = load ptr, ptr %11, align 8, !tbaa !5
  %44 = load i32, ptr %16, align 4, !tbaa !9
  %45 = load i32, ptr %12, align 4, !tbaa !9
  %46 = load i32, ptr %13, align 4, !tbaa !9
  %47 = load i32, ptr %14, align 4, !tbaa !9
  %48 = add nsw i32 %46, %47
  %49 = load i32, ptr %15, align 4, !tbaa !9
  %50 = add nsw i32 %48, %49
  call void @init_yuv_dim(ptr noundef %43, i32 noundef %44, i32 noundef %45, i32 noundef %50)
  %51 = load ptr, ptr %9, align 8, !tbaa !5
  %52 = load ptr, ptr %11, align 8, !tbaa !5
  %53 = load ptr, ptr %5, align 8, !tbaa !5
  %54 = load i32, ptr %8, align 4, !tbaa !9
  call void @init_uint8_buf(ptr noundef %51, ptr noundef %52, ptr noundef %53, i32 noundef %54)
  %55 = load ptr, ptr %9, align 8, !tbaa !5
  store ptr %55, ptr %4, align 8
  store i32 1, ptr %10, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %16) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr %15) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr %14) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr %13) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr %12) #4
  br label %56

56:                                               ; preds = %31, %29
  call void @llvm.lifetime.end.p0(i64 8, ptr %11) #4
  br label %57

57:                                               ; preds = %56, %20
  call void @llvm.lifetime.end.p0(i64 8, ptr %9) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #4
  %58 = load ptr, ptr %4, align 8
  ret ptr %58
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { nounwind allocsize(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 nounwind willreturn memory(argmem: write) }
attributes #3 = { 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 #4 = { nounwind }
attributes #5 = { nounwind allocsize(0) }

!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 @free_buf(ptr noundef) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
declare dso_local void @init_uint8_buf(ptr noundef, ptr noundef, ptr noundef, i32 noundef) local_unnamed_addr #0

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

; Function Attrs: nounwind uwtable
define dso_local noundef ptr @create_yuv420_buffer(ptr noundef %0, i32 noundef %1, i32 noundef %2) local_unnamed_addr #0 {
  %calloc25 = tail call dereferenceable_or_null(56) ptr @calloc(i64 1, i64 56)
  %4 = icmp eq ptr %calloc25, null
  br i1 %4, label %11, label %5

5:                                                ; preds = %3
  %calloc = tail call dereferenceable_or_null(32) ptr @calloc(i64 1, i64 32)
  %6 = icmp eq ptr %calloc, null
  br i1 %6, label %7, label %8

7:                                                ; preds = %5
  tail call void @free_buf(ptr noundef nonnull %calloc25)
  br label %11

8:                                                ; preds = %5
  %9 = sdiv i32 %2, 2
  %reass.add = shl nsw i32 %9, 1
  %10 = add i32 %reass.add, %2
  tail call void @init_yuv_dim(ptr noundef nonnull %calloc, i32 noundef %1, i32 noundef %1, i32 noundef %10)
  tail call void @init_uint8_buf(ptr noundef nonnull %calloc25, ptr noundef nonnull %calloc, ptr noundef %0, i32 noundef 2)
  br label %11

11:                                               ; preds = %7, %8, %3
  %.1 = phi ptr [ null, %3 ], [ null, %7 ], [ %calloc25, %8 ]
  ret ptr %.1
}

; Function Attrs: nofree nounwind willreturn allockind("alloc,zeroed") allocsize(0,1) memory(inaccessiblemem: readwrite)
declare noalias noundef ptr @calloc(i64 noundef, i64 noundef) local_unnamed_addr #1

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 = { nofree nounwind willreturn allockind("alloc,zeroed") allocsize(0,1) memory(inaccessiblemem: readwrite) "alloc-family"="malloc" }

!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: DSEPass,EarlyCSEPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,PostOrderFunctionAttrsPass,ReassociatePass,SROAPass,SimplifyCFGPass,TailCallElimPass