; LLVM IR from casensiom/fast-image-processing :: src (canny)

; 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.SCannyWorkspace = type { i32, i32, ptr, ptr, ptr, ptr }

; Function Attrs: nounwind uwtable
define dso_local void @release_workspace_canny(ptr noundef %0) #0 {
  %2 = alloca ptr, align 8
  store ptr %0, ptr %2, align 8, !tbaa !5
  %3 = load ptr, ptr %2, align 8, !tbaa !5
  %4 = icmp ne ptr %3, null
  br i1 %4, label %5, label %55

5:                                                ; preds = %1
  %6 = load ptr, ptr %2, align 8, !tbaa !5
  %7 = getelementptr inbounds %struct.SCannyWorkspace, ptr %6, i32 0, i32 0
  store i32 0, ptr %7, align 8, !tbaa !9
  %8 = load ptr, ptr %2, align 8, !tbaa !5
  %9 = getelementptr inbounds %struct.SCannyWorkspace, ptr %8, i32 0, i32 1
  store i32 0, ptr %9, align 4, !tbaa !12
  %10 = load ptr, ptr %2, align 8, !tbaa !5
  %11 = getelementptr inbounds %struct.SCannyWorkspace, ptr %10, i32 0, i32 2
  %12 = load ptr, ptr %11, align 8, !tbaa !13
  %13 = icmp ne ptr %12, null
  br i1 %13, label %14, label %20

14:                                               ; preds = %5
  %15 = load ptr, ptr %2, align 8, !tbaa !5
  %16 = getelementptr inbounds %struct.SCannyWorkspace, ptr %15, i32 0, i32 2
  %17 = load ptr, ptr %16, align 8, !tbaa !13
  call void @free(ptr noundef %17) #2
  %18 = load ptr, ptr %2, align 8, !tbaa !5
  %19 = getelementptr inbounds %struct.SCannyWorkspace, ptr %18, i32 0, i32 2
  store ptr null, ptr %19, align 8, !tbaa !13
  br label %20

20:                                               ; preds = %14, %5
  %21 = load ptr, ptr %2, align 8, !tbaa !5
  %22 = getelementptr inbounds %struct.SCannyWorkspace, ptr %21, i32 0, i32 3
  %23 = load ptr, ptr %22, align 8, !tbaa !14
  %24 = icmp ne ptr %23, null
  br i1 %24, label %25, label %31

25:                                               ; preds = %20
  %26 = load ptr, ptr %2, align 8, !tbaa !5
  %27 = getelementptr inbounds %struct.SCannyWorkspace, ptr %26, i32 0, i32 3
  %28 = load ptr, ptr %27, align 8, !tbaa !14
  call void @free(ptr noundef %28) #2
  %29 = load ptr, ptr %2, align 8, !tbaa !5
  %30 = getelementptr inbounds %struct.SCannyWorkspace, ptr %29, i32 0, i32 3
  store ptr null, ptr %30, align 8, !tbaa !14
  br label %31

31:                                               ; preds = %25, %20
  %32 = load ptr, ptr %2, align 8, !tbaa !5
  %33 = getelementptr inbounds %struct.SCannyWorkspace, ptr %32, i32 0, i32 4
  %34 = load ptr, ptr %33, align 8, !tbaa !15
  %35 = icmp ne ptr %34, null
  br i1 %35, label %36, label %42

36:                                               ; preds = %31
  %37 = load ptr, ptr %2, align 8, !tbaa !5
  %38 = getelementptr inbounds %struct.SCannyWorkspace, ptr %37, i32 0, i32 4
  %39 = load ptr, ptr %38, align 8, !tbaa !15
  call void @free(ptr noundef %39) #2
  %40 = load ptr, ptr %2, align 8, !tbaa !5
  %41 = getelementptr inbounds %struct.SCannyWorkspace, ptr %40, i32 0, i32 4
  store ptr null, ptr %41, align 8, !tbaa !15
  br label %42

42:                                               ; preds = %36, %31
  %43 = load ptr, ptr %2, align 8, !tbaa !5
  %44 = getelementptr inbounds %struct.SCannyWorkspace, ptr %43, i32 0, i32 5
  %45 = load ptr, ptr %44, align 8, !tbaa !16
  %46 = icmp ne ptr %45, null
  br i1 %46, label %47, label %53

47:                                               ; preds = %42
  %48 = load ptr, ptr %2, align 8, !tbaa !5
  %49 = getelementptr inbounds %struct.SCannyWorkspace, ptr %48, i32 0, i32 5
  %50 = load ptr, ptr %49, align 8, !tbaa !16
  call void @free(ptr noundef %50) #2
  %51 = load ptr, ptr %2, align 8, !tbaa !5
  %52 = getelementptr inbounds %struct.SCannyWorkspace, ptr %51, i32 0, i32 5
  store ptr null, ptr %52, align 8, !tbaa !16
  br label %53

53:                                               ; preds = %47, %42
  %54 = load ptr, ptr %2, align 8, !tbaa !5
  call void @free(ptr noundef %54) #2
  br label %55

55:                                               ; preds = %53, %1
  ret void
}

; Function Attrs: nounwind
declare void @free(ptr noundef) #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 = { 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 }

!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, !11, i64 0}
!10 = !{!"SCannyWorkspace", !11, i64 0, !11, i64 4, !6, i64 8, !6, i64 16, !6, i64 24, !6, i64 32}
!11 = !{!"int", !7, i64 0}
!12 = !{!10, !11, i64 4}
!13 = !{!10, !6, i64 8}
!14 = !{!10, !6, i64 16}
!15 = !{!10, !6, i64 24}
!16 = !{!10, !6, 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: mustprogress nounwind willreturn uwtable
define dso_local void @release_workspace_canny(ptr noundef %0) local_unnamed_addr #0 {
  %.not = icmp eq ptr %0, null
  br i1 %.not, label %20, label %2

2:                                                ; preds = %1
  store i32 0, ptr %0, align 8, !tbaa !5
  %3 = getelementptr inbounds i8, ptr %0, i64 4
  store i32 0, ptr %3, align 4, !tbaa !11
  %4 = getelementptr inbounds i8, ptr %0, i64 8
  %5 = load ptr, ptr %4, align 8, !tbaa !12
  %.not20 = icmp eq ptr %5, null
  br i1 %.not20, label %7, label %6

6:                                                ; preds = %2
  tail call void @free(ptr noundef nonnull %5) #2
  store ptr null, ptr %4, align 8, !tbaa !12
  br label %7

7:                                                ; preds = %6, %2
  %8 = getelementptr inbounds i8, ptr %0, i64 16
  %9 = load ptr, ptr %8, align 8, !tbaa !13
  %.not21 = icmp eq ptr %9, null
  br i1 %.not21, label %11, label %10

10:                                               ; preds = %7
  tail call void @free(ptr noundef nonnull %9) #2
  store ptr null, ptr %8, align 8, !tbaa !13
  br label %11

11:                                               ; preds = %10, %7
  %12 = getelementptr inbounds i8, ptr %0, i64 24
  %13 = load ptr, ptr %12, align 8, !tbaa !14
  %.not22 = icmp eq ptr %13, null
  br i1 %.not22, label %15, label %14

14:                                               ; preds = %11
  tail call void @free(ptr noundef nonnull %13) #2
  store ptr null, ptr %12, align 8, !tbaa !14
  br label %15

15:                                               ; preds = %14, %11
  %16 = getelementptr inbounds i8, ptr %0, i64 32
  %17 = load ptr, ptr %16, align 8, !tbaa !15
  %.not23 = icmp eq ptr %17, null
  br i1 %.not23, label %19, label %18

18:                                               ; preds = %15
  tail call void @free(ptr noundef nonnull %17) #2
  br label %19

19:                                               ; preds = %18, %15
  tail call void @free(ptr noundef nonnull %0) #2
  br label %20

20:                                               ; preds = %19, %1
  ret void
}

; Function Attrs: mustprogress nounwind willreturn allockind("free") memory(argmem: readwrite, inaccessiblemem: readwrite)
declare void @free(ptr allocptr nocapture noundef) local_unnamed_addr #1

attributes #0 = { mustprogress nounwind willreturn 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 nounwind willreturn allockind("free") memory(argmem: readwrite, inaccessiblemem: readwrite) "alloc-family"="malloc" "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 }

!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, !7, i64 0}
!6 = !{!"SCannyWorkspace", !7, i64 0, !7, i64 4, !10, i64 8, !10, i64 16, !10, i64 24, !10, i64 32}
!7 = !{!"int", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!"any pointer", !8, i64 0}
!11 = !{!6, !7, i64 4}
!12 = !{!6, !10, i64 8}
!13 = !{!6, !10, i64 16}
!14 = !{!6, !10, i64 24}
!15 = !{!6, !10, i64 32}


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