move stable_mir back to its own crate and move rustc_internal to thestable_mir crate

As part of this reorganization, some traits need to be moved from `rustc_smir::context::traits` to `stable_mir::unstable::internal_cx`. These traits are specifically designed for `InternalCx` to clarify the behavior of different functions that share the same name. This move is necessary to avoid orphan rule violations.

Author: makai410

Cargo.lock

@@ -4540,9 +4540,6 @@ dependencies = [
  "rustc_session",
  "rustc_span",
  "rustc_target",
- "scoped-tls",
- "serde",
- "tracing",
 ]
 
 [[package]]
@@ -5095,7 +5092,16 @@ checksum = "a8f112729512f8e442d81f95a8a7ddf2b7c6b8a1a6f509a95864142b30cab2d3"
 name = "stable_mir"
 version = "0.1.0-preview"
 dependencies = [
+ "rustc_abi",
+ "rustc_hir",
+ "rustc_middle",
+ "rustc_session",
  "rustc_smir",
+ "rustc_span",
+ "rustc_target",
+ "scoped-tls",
+ "serde",
+ "tracing",
 ]
 
 [[package]]

compiler/rustc_smir/Cargo.toml

@@ -13,7 +13,4 @@ rustc_middle = { path = "../rustc_middle" }
 rustc_session = { path = "../rustc_session" }
 rustc_span = { path = "../rustc_span" }
 rustc_target = { path = "../rustc_target" }
-scoped-tls = "1.0"
-serde = { version = "1.0.125", features = [ "derive" ] }
-tracing = "0.1"
 # tidy-alphabetical-end

compiler/rustc_smir/src/rustc_smir/alloc.rs renamed to compiler/rustc_smir/src/alloc.rs

@@ -11,14 +11,14 @@ use rustc_middle::mir::interpret::{
 use rustc_middle::ty::{Ty, layout};
 
 use super::{SmirCtxt, Tables};
-use crate::rustc_smir::bridge::Allocation as _;
-use crate::rustc_smir::{Bridge, SmirError};
+use crate::bridge::Allocation as _;
+use crate::{Bridge, SmirError};
 
 pub fn create_ty_and_layout<'tcx, B: Bridge>(
     cx: &SmirCtxt<'tcx, B>,
     ty: Ty<'tcx>,
 ) -> Result<TyAndLayout<'tcx, Ty<'tcx>>, &'tcx layout::LayoutError<'tcx>> {
-    use crate::rustc_smir::context::SmirTypingEnv;
+    use crate::context::SmirTypingEnv;
     cx.tcx.layout_of(cx.fully_monomorphized().as_query_input(ty))
 }
 

compiler/rustc_smir/src/rustc_smir/bridge.rs renamed to compiler/rustc_smir/src/bridge.rs

@@ -25,8 +25,8 @@ use rustc_span::{FileNameDisplayPreference, Span, Symbol};
 use rustc_target::callconv::FnAbi;
 
 use super::{SmirAllocRange, SmirCtxt, SmirTy, SmirTypingEnv};
-use crate::rustc_smir::builder::BodyBuilder;
-use crate::rustc_smir::{Bridge, SmirError, Tables, filter_def_ids};
+use crate::builder::BodyBuilder;
+use crate::{Bridge, SmirError, Tables, filter_def_ids};
 
 impl<'tcx, B: Bridge> SmirTy<'tcx> for SmirCtxt<'tcx, B> {
     fn new_foreign(&self, def_id: DefId) -> ty::Ty<'tcx> {
@@ -426,7 +426,7 @@ impl<'tcx, B: Bridge> SmirCtxt<'tcx, B> {
 
     /// Evaluate constant as a target usize.
     pub fn eval_target_usize(&self, cnst: MirConst<'tcx>) -> Result<u64, B::Error> {
-        use crate::rustc_smir::context::SmirTypingEnv;
+        use crate::context::SmirTypingEnv;
         cnst.try_eval_target_usize(self.tcx, self.fully_monomorphized())
             .ok_or_else(|| B::Error::new(format!("Const `{cnst:?}` cannot be encoded as u64")))
     }
@@ -436,10 +436,7 @@ impl<'tcx, B: Bridge> SmirCtxt<'tcx, B> {
             .ok_or_else(|| B::Error::new(format!("Const `{cnst:?}` cannot be encoded as u64")))
     }
 
-    pub(crate) fn try_new_const_zst(
-        &self,
-        ty_internal: Ty<'tcx>,
-    ) -> Result<MirConst<'tcx>, B::Error> {
+    pub fn try_new_const_zst(&self, ty_internal: Ty<'tcx>) -> Result<MirConst<'tcx>, B::Error> {
         let size = self
             .tcx
             .layout_of(self.fully_monomorphized().as_query_input(ty_internal))

compiler/rustc_smir/src/rustc_smir/builder.rs renamed to compiler/rustc_smir/src/builder.rs

@@ -9,7 +9,7 @@ use rustc_middle::ty;
 use rustc_middle::ty::layout::{FnAbiOfHelpers, HasTyCtxt, HasTypingEnv, LayoutOfHelpers};
 use rustc_middle::ty::{Ty, TyCtxt};
 
-use crate::rustc_smir::{Bridge, SmirError};
+use crate::{Bridge, SmirError};
 
 mod impls;
 mod traits;
@@ -18,7 +18,7 @@ pub use traits::*;
 
 /// Provides direct access to rustc's internal queries.
 ///
-/// The [`crate::stable_mir::compiler_interface::SmirInterface`] must go through
+/// `SmirInterface` must go through
 /// this context to obtain rustc-level information.
 pub struct SmirCtxt<'tcx, B: Bridge> {
     pub tcx: TyCtxt<'tcx>,

compiler/rustc_smir/src/rustc_smir/context/impls.rs renamed to compiler/rustc_smir/src/context/impls.rs

@@ -8,31 +8,6 @@ use rustc_middle::ty;
 use rustc_middle::ty::Ty;
 use rustc_span::def_id::DefId;
 
-pub trait SmirExistentialProjection<'tcx> {
-    fn new_from_args(
-        &self,
-        def_id: DefId,
-        args: ty::GenericArgsRef<'tcx>,
-        term: ty::Term<'tcx>,
-    ) -> ty::ExistentialProjection<'tcx>;
-}
-
-pub trait SmirExistentialTraitRef<'tcx> {
-    fn new_from_args(
-        &self,
-        trait_def_id: DefId,
-        args: ty::GenericArgsRef<'tcx>,
-    ) -> ty::ExistentialTraitRef<'tcx>;
-}
-
-pub trait SmirTraitRef<'tcx> {
-    fn new_from_args(
-        &self,
-        trait_def_id: DefId,
-        args: ty::GenericArgsRef<'tcx>,
-    ) -> ty::TraitRef<'tcx>;
-}
-
 pub trait SmirTy<'tcx> {
     fn new_foreign(&self, def_id: DefId) -> Ty<'tcx>;
 }