; LLVM IR from QiaoLiuHit/LSOTB-TIR :: vlfeat-0.9.19/vl (dsift)

; 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.VlDsiftFilter_ = type { i32, i32, i32, i32, i32, i32, i32, i32, %struct.VlDsiftDescriptorGeometry_, i32, double, i32, i32, ptr, ptr, i32, i32, i32, ptr, ptr, ptr }
%struct.VlDsiftDescriptorGeometry_ = type { i32, i32, i32, i32, i32 }

; Function Attrs: nounwind uwtable
define dso_local void @vl_dsift_delete(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
  call void @_vl_dsift_free_buffers(ptr noundef %3)
  %4 = load ptr, ptr %2, align 8, !tbaa !5
  %5 = getelementptr inbounds %struct.VlDsiftFilter_, ptr %4, i32 0, i32 20
  %6 = load ptr, ptr %5, align 8, !tbaa !9
  %7 = icmp ne ptr %6, null
  br i1 %7, label %8, label %12

8:                                                ; preds = %1
  %9 = load ptr, ptr %2, align 8, !tbaa !5
  %10 = getelementptr inbounds %struct.VlDsiftFilter_, ptr %9, i32 0, i32 20
  %11 = load ptr, ptr %10, align 8, !tbaa !9
  call void @vl_free(ptr noundef %11)
  br label %12

12:                                               ; preds = %8, %1
  %13 = load ptr, ptr %2, align 8, !tbaa !5
  %14 = getelementptr inbounds %struct.VlDsiftFilter_, ptr %13, i32 0, i32 19
  %15 = load ptr, ptr %14, align 8, !tbaa !14
  %16 = icmp ne ptr %15, null
  br i1 %16, label %17, label %21

17:                                               ; preds = %12
  %18 = load ptr, ptr %2, align 8, !tbaa !5
  %19 = getelementptr inbounds %struct.VlDsiftFilter_, ptr %18, i32 0, i32 19
  %20 = load ptr, ptr %19, align 8, !tbaa !14
  call void @vl_free(ptr noundef %20)
  br label %21

21:                                               ; preds = %17, %12
  %22 = load ptr, ptr %2, align 8, !tbaa !5
  call void @vl_free(ptr noundef %22)
  ret void
}

; Function Attrs: nounwind uwtable
declare hidden void @_vl_dsift_free_buffers(ptr noundef) #0

declare void @vl_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 = { "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, !6, i64 0}
!6 = !{!"any pointer", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = !{!10, !6, i64 120}
!10 = !{!"VlDsiftFilter_", !11, i64 0, !11, i64 4, !11, i64 8, !11, i64 12, !11, i64 16, !11, i64 20, !11, i64 24, !11, i64 28, !12, i64 32, !11, i64 52, !13, i64 56, !11, i64 64, !11, i64 68, !6, i64 72, !6, i64 80, !11, i64 88, !11, i64 92, !11, i64 96, !6, i64 104, !6, i64 112, !6, i64 120}
!11 = !{!"int", !7, i64 0}
!12 = !{!"VlDsiftDescriptorGeometry_", !11, i64 0, !11, i64 4, !11, i64 8, !11, i64 12, !11, i64 16}
!13 = !{!"double", !7, i64 0}
!14 = !{!10, !6, i64 112}


; 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
define dso_local void @vl_dsift_delete(ptr noundef %0) local_unnamed_addr #0 {
  tail call void @_vl_dsift_free_buffers(ptr noundef %0)
  %2 = getelementptr inbounds i8, ptr %0, i64 120
  %3 = load ptr, ptr %2, align 8, !tbaa !5
  %.not = icmp eq ptr %3, null
  br i1 %.not, label %5, label %4

4:                                                ; preds = %1
  tail call void @vl_free(ptr noundef nonnull %3) #2
  br label %5

5:                                                ; preds = %4, %1
  %6 = getelementptr inbounds i8, ptr %0, i64 112
  %7 = load ptr, ptr %6, align 8, !tbaa !13
  %.not7 = icmp eq ptr %7, null
  br i1 %.not7, label %9, label %8

8:                                                ; preds = %5
  tail call void @vl_free(ptr noundef nonnull %7) #2
  br label %9

9:                                                ; preds = %8, %5
  tail call void @vl_free(ptr noundef nonnull %0) #2
  ret void
}

; Function Attrs: nounwind uwtable
declare hidden void @_vl_dsift_free_buffers(ptr noundef) local_unnamed_addr #0

declare void @vl_free(ptr 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 = { "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, !12, i64 120}
!6 = !{!"VlDsiftFilter_", !7, i64 0, !7, i64 4, !7, i64 8, !7, i64 12, !7, i64 16, !7, i64 20, !7, i64 24, !7, i64 28, !10, i64 32, !7, i64 52, !11, i64 56, !7, i64 64, !7, i64 68, !12, i64 72, !12, i64 80, !7, i64 88, !7, i64 92, !7, i64 96, !12, i64 104, !12, i64 112, !12, i64 120}
!7 = !{!"int", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!"VlDsiftDescriptorGeometry_", !7, i64 0, !7, i64 4, !7, i64 8, !7, i64 12, !7, i64 16}
!11 = !{!"double", !8, i64 0}
!12 = !{!"any pointer", !8, i64 0}
!13 = !{!6, !12, i64 112}


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