Complete functionality and general cleanup

1 files changed, 0 insertions, 143 deletions

diff --git a/compiler/rustc_monomorphize/src/partitioning/autodiff.rs b/compiler/rustc_monomorphize/src/partitioning/autodiff.rs
deleted file mode 100644
index 22d593b80b8..00000000000
--- a/compiler/rustc_monomorphize/src/partitioning/autodiff.rs
+++ /dev/null
@@ -1,143 +0,0 @@
-use rustc_ast::expand::autodiff_attrs::{AutoDiffItem, DiffActivity};
-use rustc_hir::def_id::LOCAL_CRATE;
-use rustc_middle::bug;
-use rustc_middle::mir::mono::MonoItem;
-use rustc_middle::ty::{self, Instance, PseudoCanonicalInput, Ty, TyCtxt, TypingEnv};
-use rustc_symbol_mangling::symbol_name_for_instance_in_crate;
-use tracing::{debug, trace};
-
-use crate::partitioning::UsageMap;
-
-fn adjust_activity_to_abi<'tcx>(tcx: TyCtxt<'tcx>, fn_ty: Ty<'tcx>, da: &mut Vec<DiffActivity>) {
-    if !matches!(fn_ty.kind(), ty::FnDef(..)) {
-        bug!("expected fn def for autodiff, got {:?}", fn_ty);
-    }
-
-    // We don't actually pass the types back into the type system.
-    // All we do is decide how to handle the arguments.
-    let sig = fn_ty.fn_sig(tcx).skip_binder();
-
-    let mut new_activities = vec![];
-    let mut new_positions = vec![];
-    for (i, ty) in sig.inputs().iter().enumerate() {
-        if let Some(inner_ty) = ty.builtin_deref(true) {
-            if inner_ty.is_slice() {
-                // Now we need to figure out the size of each slice element in memory to allow
-                // safety checks and usability improvements in the backend.
-                let sty = match inner_ty.builtin_index() {
-                    Some(sty) => sty,
-                    None => {
-                        panic!("slice element type unknown");
-                    }
-                };
-                let pci = PseudoCanonicalInput {
-                    typing_env: TypingEnv::fully_monomorphized(),
-                    value: sty,
-                };
-
-                let layout = tcx.layout_of(pci);
-                let elem_size = match layout {
-                    Ok(layout) => layout.size,
-                    Err(_) => {
-                        bug!("autodiff failed to compute slice element size");
-                    }
-                };
-                let elem_size: u32 = elem_size.bytes() as u32;
-
-                // We know that the length will be passed as extra arg.
-                if !da.is_empty() {
-                    // We are looking at a slice. The length of that slice will become an
-                    // extra integer on llvm level. Integers are always const.
-                    // However, if the slice get's duplicated, we want to know to later check the
-                    // size. So we mark the new size argument as FakeActivitySize.
-                    // There is one FakeActivitySize per slice, so for convenience we store the
-                    // slice element size in bytes in it. We will use the size in the backend.
-                    let activity = match da[i] {
-                        DiffActivity::DualOnly
-                        | DiffActivity::Dual
-                        | DiffActivity::Dualv
-                        | DiffActivity::DuplicatedOnly
-                        | DiffActivity::Duplicated => {
-                            DiffActivity::FakeActivitySize(Some(elem_size))
-                        }
-                        DiffActivity::Const => DiffActivity::Const,
-                        _ => bug!("unexpected activity for ptr/ref"),
-                    };
-                    new_activities.push(activity);
-                    new_positions.push(i + 1);
-                }
-
-                continue;
-            }
-        }
-    }
-    // now add the extra activities coming from slices
-    // Reverse order to not invalidate the indices
-    for _ in 0..new_activities.len() {
-        let pos = new_positions.pop().unwrap();
-        let activity = new_activities.pop().unwrap();
-        da.insert(pos, activity);
-    }
-}
-
-pub(crate) fn find_autodiff_source_functions<'tcx>(
-    tcx: TyCtxt<'tcx>,
-    usage_map: &UsageMap<'tcx>,
-    autodiff_mono_items: Vec<(&MonoItem<'tcx>, &Instance<'tcx>)>,
-) -> Vec<AutoDiffItem> {
-    let mut autodiff_items: Vec<AutoDiffItem> = vec![];
-    for (item, instance) in autodiff_mono_items {
-        let target_id = instance.def_id();
-        let cg_fn_attr = &tcx.codegen_fn_attrs(target_id).autodiff_item;
-        let Some(target_attrs) = cg_fn_attr else {
-            continue;
-        };
-        let mut input_activities: Vec<DiffActivity> = target_attrs.input_activity.clone();
-        if target_attrs.is_source() {
-            trace!("source found: {:?}", target_id);
-        }
-        if !target_attrs.apply_autodiff() {
-            continue;
-        }
-
-        let target_symbol = symbol_name_for_instance_in_crate(tcx, instance.clone(), LOCAL_CRATE);
-
-        let source =
-            usage_map.used_map.get(&item).unwrap().into_iter().find_map(|item| match *item {
-                MonoItem::Fn(ref instance_s) => {
-                    let source_id = instance_s.def_id();
-                    if let Some(ad) = &tcx.codegen_fn_attrs(source_id).autodiff_item
-                        && ad.is_active()
-                    {
-                        return Some(instance_s);
-                    }
-                    None
-                }
-                _ => None,
-            });
-        let inst = match source {
-            Some(source) => source,
-            None => continue,
-        };
-
-        debug!("source_id: {:?}", inst.def_id());
-        let fn_ty = inst.ty(tcx, ty::TypingEnv::fully_monomorphized());
-        assert!(fn_ty.is_fn());
-        adjust_activity_to_abi(tcx, fn_ty, &mut input_activities);
-        let symb = symbol_name_for_instance_in_crate(tcx, inst.clone(), LOCAL_CRATE);
-
-        let mut new_target_attrs = target_attrs.clone();
-        new_target_attrs.input_activity = input_activities;
-        let itm = new_target_attrs.into_item(symb, target_symbol);
-        autodiff_items.push(itm);
-    }
-
-    if !autodiff_items.is_empty() {
-        trace!("AUTODIFF ITEMS EXIST");
-        for item in &mut *autodiff_items {
-            trace!("{}", &item);
-        }
-    }
-
-    autodiff_items
-}