-
Notifications
You must be signed in to change notification settings - Fork 12.5k
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
Auto merge of #39628 - arielb1:shimmir, r=eddyb
Translate shims using MIR This removes one large remaining part of old trans.
- Loading branch information
Showing
88 changed files
with
2,797 additions
and
3,169 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,128 @@ | ||
| // Copyright 2016 The Rust Project Developers. See the COPYRIGHT | ||
| // file at the top-level directory of this distribution and at | ||
| // http://rust-lang.org/COPYRIGHT. | ||
| // | ||
| // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or | ||
| // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license | ||
| // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your | ||
| // option. This file may not be copied, modified, or distributed | ||
| // except according to those terms. | ||
|
|
||
| use dep_graph::DepNode; | ||
| use hir::def_id::DefId; | ||
| use ty::{self, Ty, TypeFoldable, Substs}; | ||
| use util::ppaux; | ||
|
|
||
| use std::borrow::Cow; | ||
| use std::fmt; | ||
| use syntax::ast; | ||
|
|
||
|
|
||
| #[derive(Copy, Clone, PartialEq, Eq, Hash, Debug)] | ||
| pub struct Instance<'tcx> { | ||
| pub def: InstanceDef<'tcx>, | ||
| pub substs: &'tcx Substs<'tcx>, | ||
| } | ||
|
|
||
| #[derive(Copy, Clone, PartialEq, Eq, Hash, Debug)] | ||
| pub enum InstanceDef<'tcx> { | ||
| Item(DefId), | ||
| Intrinsic(DefId), | ||
| // <fn() as FnTrait>::call_* | ||
| // def-id is FnTrait::call_* | ||
| FnPtrShim(DefId, Ty<'tcx>), | ||
| // <Trait as Trait>::fn | ||
| Virtual(DefId, usize), | ||
| // <[mut closure] as FnOnce>::call_once | ||
| ClosureOnceShim { call_once: DefId }, | ||
| // drop_in_place::<T>; None for empty drop glue. | ||
| DropGlue(DefId, Option<Ty<'tcx>>), | ||
| } | ||
|
|
||
| impl<'tcx> InstanceDef<'tcx> { | ||
| #[inline] | ||
| pub fn def_id(&self) -> DefId { | ||
| match *self { | ||
| InstanceDef::Item(def_id) | | ||
| InstanceDef::FnPtrShim(def_id, _) | | ||
| InstanceDef::Virtual(def_id, _) | | ||
| InstanceDef::Intrinsic(def_id, ) | | ||
| InstanceDef::ClosureOnceShim { call_once: def_id } | ||
| => def_id, | ||
| InstanceDef::DropGlue(def_id, _) => def_id | ||
| } | ||
| } | ||
|
|
||
| #[inline] | ||
| pub fn def_ty<'a>(&self, tcx: ty::TyCtxt<'a, 'tcx, 'tcx>) -> Ty<'tcx> { | ||
| tcx.item_type(self.def_id()) | ||
| } | ||
|
|
||
| #[inline] | ||
| pub fn attrs<'a>(&self, tcx: ty::TyCtxt<'a, 'tcx, 'tcx>) -> Cow<'tcx, [ast::Attribute]> { | ||
| tcx.get_attrs(self.def_id()) | ||
| } | ||
|
|
||
| pub(crate) fn dep_node(&self) -> DepNode<DefId> { | ||
| // HACK: def-id binning, project-style; someone replace this with | ||
| // real on-demand. | ||
| let ty = match self { | ||
| &InstanceDef::FnPtrShim(_, ty) => Some(ty), | ||
| &InstanceDef::DropGlue(_, ty) => ty, | ||
| _ => None | ||
| }.into_iter(); | ||
|
|
||
| DepNode::MirShim( | ||
| Some(self.def_id()).into_iter().chain( | ||
| ty.flat_map(|t| t.walk()).flat_map(|t| match t.sty { | ||
| ty::TyAdt(adt_def, _) => Some(adt_def.did), | ||
| ty::TyProjection(ref proj) => Some(proj.trait_ref.def_id), | ||
| _ => None, | ||
| }) | ||
| ).collect() | ||
| ) | ||
| } | ||
| } | ||
|
|
||
| impl<'tcx> fmt::Display for Instance<'tcx> { | ||
| fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { | ||
| ppaux::parameterized(f, self.substs, self.def_id(), &[])?; | ||
| match self.def { | ||
| InstanceDef::Item(_) => Ok(()), | ||
| InstanceDef::Intrinsic(_) => { | ||
| write!(f, " - intrinsic") | ||
| } | ||
| InstanceDef::Virtual(_, num) => { | ||
| write!(f, " - shim(#{})", num) | ||
| } | ||
| InstanceDef::FnPtrShim(_, ty) => { | ||
| write!(f, " - shim({:?})", ty) | ||
| } | ||
| InstanceDef::ClosureOnceShim { .. } => { | ||
| write!(f, " - shim") | ||
| } | ||
| InstanceDef::DropGlue(_, ty) => { | ||
| write!(f, " - shim({:?})", ty) | ||
| } | ||
| } | ||
| } | ||
| } | ||
|
|
||
| impl<'a, 'b, 'tcx> Instance<'tcx> { | ||
| pub fn new(def_id: DefId, substs: &'tcx Substs<'tcx>) | ||
| -> Instance<'tcx> { | ||
| assert!(substs.is_normalized_for_trans() && !substs.has_escaping_regions(), | ||
| "substs of instance {:?} not normalized for trans: {:?}", | ||
| def_id, substs); | ||
| Instance { def: InstanceDef::Item(def_id), substs: substs } | ||
| } | ||
|
|
||
| pub fn mono(tcx: ty::TyCtxt<'a, 'tcx, 'b>, def_id: DefId) -> Instance<'tcx> { | ||
| Instance::new(def_id, tcx.global_tcx().empty_substs_for_def_id(def_id)) | ||
| } | ||
|
|
||
| #[inline] | ||
| pub fn def_id(&self) -> DefId { | ||
| self.def.def_id() | ||
| } | ||
| } |
Oops, something went wrong.