Rename rustc_mir to rustc_const_eval.

Cargo.lock

@@ -3605,6 +3605,7 @@ dependencies = [
  "either",
  "itertools 0.9.0",
  "polonius-engine",
+ "rustc_const_eval",
  "rustc_data_structures",
  "rustc_errors",
  "rustc_graphviz",
@@ -3613,7 +3614,6 @@ dependencies = [
  "rustc_infer",
  "rustc_lexer",
  "rustc_middle",
- "rustc_mir",
  "rustc_mir_dataflow",
  "rustc_serialize",
  "rustc_session",
@@ -3708,6 +3708,30 @@ dependencies = [
  "tracing",
 ]
 
+[[package]]
+name = "rustc_const_eval"
+version = "0.0.0"
+dependencies = [
+ "either",
+ "gsgdt",
+ "rustc_apfloat",
+ "rustc_ast",
+ "rustc_attr",
+ "rustc_data_structures",
+ "rustc_errors",
+ "rustc_hir",
+ "rustc_index",
+ "rustc_infer",
+ "rustc_macros",
+ "rustc_middle",
+ "rustc_mir_dataflow",
+ "rustc_session",
+ "rustc_span",
+ "rustc_target",
+ "rustc_trait_selection",
+ "tracing",
+]
+
 [[package]]
 name = "rustc_data_structures"
 version = "0.0.0"
@@ -3746,6 +3770,7 @@ dependencies = [
  "rustc_ast",
  "rustc_ast_pretty",
  "rustc_codegen_ssa",
+ "rustc_const_eval",
  "rustc_data_structures",
  "rustc_error_codes",
  "rustc_errors",
@@ -3756,7 +3781,6 @@ dependencies = [
  "rustc_lint",
  "rustc_metadata",
  "rustc_middle",
- "rustc_mir",
  "rustc_parse",
  "rustc_plugin_impl",
  "rustc_save_analysis",
@@ -3919,6 +3943,7 @@ dependencies = [
  "rustc_builtin_macros",
  "rustc_codegen_llvm",
  "rustc_codegen_ssa",
+ "rustc_const_eval",
  "rustc_data_structures",
  "rustc_errors",
  "rustc_expand",
@@ -3927,7 +3952,6 @@ dependencies = [
  "rustc_lint",
  "rustc_metadata",
  "rustc_middle",
- "rustc_mir",
  "rustc_mir_build",
  "rustc_mir_transform",
  "rustc_monomorphize",
@@ -4073,30 +4097,6 @@ dependencies = [
  "tracing",
 ]
 
-[[package]]
-name = "rustc_mir"
-version = "0.0.0"
-dependencies = [
- "either",
- "gsgdt",
- "rustc_apfloat",
- "rustc_ast",
- "rustc_attr",
- "rustc_data_structures",
- "rustc_errors",
- "rustc_hir",
- "rustc_index",
- "rustc_infer",
- "rustc_macros",
- "rustc_middle",
- "rustc_mir_dataflow",
- "rustc_session",
- "rustc_span",
- "rustc_target",
- "rustc_trait_selection",
- "tracing",
-]
-
 [[package]]
 name = "rustc_mir_build"
 version = "0.0.0"
@@ -4148,12 +4148,12 @@ dependencies = [
  "itertools 0.9.0",
  "rustc_ast",
  "rustc_attr",
+ "rustc_const_eval",
  "rustc_data_structures",
  "rustc_errors",
  "rustc_hir",
  "rustc_index",
  "rustc_middle",
- "rustc_mir",
  "rustc_mir_dataflow",
  "rustc_serialize",
  "rustc_session",

compiler/rustc_borrowck/Cargo.toml

@@ -21,7 +21,7 @@ rustc_index = { path = "../rustc_index" }
 rustc_infer = { path = "../rustc_infer" }
 rustc_lexer = { path = "../rustc_lexer" }
 rustc_middle = { path = "../rustc_middle" }
-rustc_mir = { path = "../rustc_mir" }
+rustc_const_eval = { path = "../rustc_const_eval" }
 rustc_mir_dataflow = { path = "../rustc_mir_dataflow" }
 rustc_serialize = { path = "../rustc_serialize" }
 rustc_session = { path = "../rustc_session" }

compiler/rustc_borrowck/src/diagnostics/conflict_errors.rs

@@ -1695,7 +1695,7 @@ fn explain_deref_coercion(&mut self, loan: &BorrowData<'tcx>, err: &mut Diagnost
             Some((method_did, method_substs)),
         ) = (
             &self.body[loan.reserve_location.block].terminator,
-            rustc_mir::util::find_self_call(
+            rustc_const_eval::util::find_self_call(
                 tcx,
                 self.body,
                 loan.assigned_place.local,

compiler/rustc_borrowck/src/diagnostics/mod.rs

@@ -899,12 +899,13 @@ pub(super) fn move_spans(
             kind: TerminatorKind::Call { fn_span, from_hir_call, .. }, ..
         }) = &self.body[location.block].terminator
         {
-            let (method_did, method_substs) = if let Some(info) = rustc_mir::util::find_self_call(
-                self.infcx.tcx,
-                &self.body,
-                target_temp,
-                location.block,
-            ) {
+            let (method_did, method_substs) = if let Some(info) =
+                rustc_const_eval::util::find_self_call(
+                    self.infcx.tcx,
+                    &self.body,
+                    target_temp,
+                    location.block,
+                ) {
                 info
             } else {
                 return normal_ret;

compiler/rustc_borrowck/src/diagnostics/mutability_errors.rs

@@ -16,8 +16,8 @@
 
 use crate::diagnostics::BorrowedContentSource;
 use crate::MirBorrowckCtxt;
+use rustc_const_eval::util::collect_writes::FindAssignments;
 use rustc_errors::{Applicability, DiagnosticBuilder};
-use rustc_mir::util::collect_writes::FindAssignments;
 
 #[derive(Copy, Clone, Debug, Eq, PartialEq)]
 pub(crate) enum AccessKind {

compiler/rustc_borrowck/src/type_check/mod.rs

@@ -41,7 +41,7 @@
 use rustc_trait_selection::traits::query::Fallible;
 use rustc_trait_selection::traits::{self, ObligationCause, PredicateObligations};
 
-use rustc_mir::transform::{
+use rustc_const_eval::transform::{
     check_consts::ConstCx, promote_consts::is_const_fn_in_array_repeat_expression,
 };
 use rustc_mir_dataflow::impls::MaybeInitializedPlaces;

compiler/rustc_mir/Cargo.toml → compiler/rustc_const_eval/Cargo.toml

 [package]
-name = "rustc_mir"
+name = "rustc_const_eval"
 version = "0.0.0"
 edition = "2018"
 

compiler/rustc_driver/Cargo.toml

@@ -22,7 +22,7 @@ rustc_feature = { path = "../rustc_feature" }
 rustc_hir = { path = "../rustc_hir" }
 rustc_hir_pretty = { path = "../rustc_hir_pretty" }
 rustc_metadata = { path = "../rustc_metadata" }
-rustc_mir = { path = "../rustc_mir" }
+rustc_const_eval = { path = "../rustc_const_eval" }
 rustc_parse = { path = "../rustc_parse" }
 rustc_plugin_impl = { path = "../rustc_plugin_impl" }
 rustc_save_analysis = { path = "../rustc_save_analysis" }

compiler/rustc_interface/Cargo.toml

@@ -32,7 +32,7 @@ rustc_symbol_mangling = { path = "../rustc_symbol_mangling" }
 rustc_codegen_llvm = { path = "../rustc_codegen_llvm", optional = true }
 rustc_hir = { path = "../rustc_hir" }
 rustc_metadata = { path = "../rustc_metadata" }
-rustc_mir = { path = "../rustc_mir" }
+rustc_const_eval = { path = "../rustc_const_eval" }
 rustc_mir_build = { path = "../rustc_mir_build" }
 rustc_mir_transform = { path = "../rustc_mir_transform" }
 rustc_monomorphize = { path = "../rustc_monomorphize" }

compiler/rustc_interface/src/passes.rs

@@ -22,7 +22,6 @@
 use rustc_middle::middle::cstore::{MetadataLoader, MetadataLoaderDyn};
 use rustc_middle::ty::query::Providers;
 use rustc_middle::ty::{self, GlobalCtxt, ResolverOutputs, TyCtxt};
-use rustc_mir as mir;
 use rustc_mir_build as mir_build;
 use rustc_parse::{parse_crate_from_file, parse_crate_from_source_str};
 use rustc_passes::{self, hir_stats, layout_test};
@@ -738,8 +737,8 @@ pub fn prepare_outputs(
     let providers = &mut Providers::default();
     providers.analysis = analysis;
     proc_macro_decls::provide(providers);
+    rustc_const_eval::provide(providers);
     rustc_middle::hir::provide(providers);
-    mir::provide(providers);
     mir_borrowck::provide(providers);
     mir_build::provide(providers);
     rustc_mir_transform::provide(providers);

compiler/rustc_middle/src/lib.rs

@@ -8,7 +8,7 @@
 //! - **MIR.** The "mid-level (M) intermediate representation (IR)" is
 //!   defined in the `mir` module. This module contains only the
 //!   *definition* of the MIR; the passes that transform and operate
-//!   on MIR are found in `rustc_mir` crate.
+//!   on MIR are found in `rustc_const_eval` crate.
 //! - **Types.** The internal representation of types used in rustc is
 //!   defined in the `ty` module. This includes the **type context**
 //!   (or `tcx`), which is the central context during most of

compiler/rustc_middle/src/mir/mod.rs

@@ -1170,7 +1170,7 @@ pub struct VarDebugInfo<'tcx> {
     /// [CFG]: https://rustc-dev-guide.rust-lang.org/appendix/background.html#cfg
     /// [data-flow analyses]:
     ///     https://rustc-dev-guide.rust-lang.org/appendix/background.html#what-is-a-dataflow-analysis
-    /// [`CriticalCallEdges`]: ../../rustc_mir/transform/add_call_guards/enum.AddCallGuards.html#variant.CriticalCallEdges
+    /// [`CriticalCallEdges`]: ../../rustc_const_eval/transform/add_call_guards/enum.AddCallGuards.html#variant.CriticalCallEdges
     /// [guide-mir]: https://rustc-dev-guide.rust-lang.org/mir/
     pub struct BasicBlock {
         derive [HashStable]

compiler/rustc_middle/src/mir/query.rs

@@ -219,7 +219,7 @@ pub struct BorrowCheckResult<'tcx> {
 /// The result of the `mir_const_qualif` query.
 ///
 /// Each field (except `error_occured`) corresponds to an implementer of the `Qualif` trait in
-/// `rustc_mir/src/transform/check_consts/qualifs.rs`. See that file for more information on each
+/// `rustc_const_eval/src/transform/check_consts/qualifs.rs`. See that file for more information on each
 /// `Qualif`.
 #[derive(Clone, Copy, Debug, Default, TyEncodable, TyDecodable, HashStable)]
 pub struct ConstQualifs {
@@ -313,7 +313,7 @@ pub struct ClosureOutlivesRequirement<'tcx> {
 /// are interesting (for error reporting). Order of variants indicates sort
 /// order of the category, thereby influencing diagnostic output.
 ///
-/// See also `rustc_mir::borrow_check::constraints`.
+/// See also `rustc_const_eval::borrow_check::constraints`.
 #[derive(Copy, Clone, Debug, Eq, PartialEq, PartialOrd, Ord, Hash)]
 #[derive(TyEncodable, TyDecodable, HashStable)]
 pub enum ConstraintCategory {

compiler/rustc_middle/src/ty/sty.rs

@@ -643,7 +643,7 @@ pub fn discr_ty(&self, tcx: TyCtxt<'tcx>) -> Ty<'tcx> {
     }
 
     /// This returns the types of the MIR locals which had to be stored across suspension points.
-    /// It is calculated in rustc_mir::transform::generator::StateTransform.
+    /// It is calculated in rustc_const_eval::transform::generator::StateTransform.
     /// All the types here must be in the tuple in GeneratorInterior.
     ///
     /// The locals are grouped by their variant number. Note that some locals may
@@ -1268,7 +1268,7 @@ pub fn for_def(def: &ty::GenericParamDef) -> ParamConst {
 /// Representation of regions. Note that the NLL checker uses a distinct
 /// representation of regions. For this reason, it internally replaces all the
 /// regions with inference variables -- the index of the variable is then used
-/// to index into internal NLL data structures. See `rustc_mir::borrow_check`
+/// to index into internal NLL data structures. See `rustc_const_eval::borrow_check`
 /// module for more information.
 ///
 /// ## The Region lattice within a given function

compiler/rustc_mir_dataflow/src/framework/mod.rs

@@ -11,7 +11,7 @@
 //! `visit_results`. The following example uses the `ResultsCursor` approach.
 //!
 //! ```ignore (cross-crate-imports)
-//! use rustc_mir::dataflow::Analysis; // Makes `into_engine` available.
+//! use rustc_const_eval::dataflow::Analysis; // Makes `into_engine` available.
 //!
 //! fn do_my_analysis(tcx: TyCtxt<'tcx>, body: &mir::Body<'tcx>) {
 //!     let analysis = MyAnalysis::new()

compiler/rustc_mir_transform/Cargo.toml

@@ -18,7 +18,7 @@ rustc_errors = { path = "../rustc_errors" }
 rustc_hir = { path = "../rustc_hir" }
 rustc_index = { path = "../rustc_index" }
 rustc_middle = { path = "../rustc_middle" }
-rustc_mir = { path = "../rustc_mir" }
+rustc_const_eval = { path = "../rustc_const_eval" }
 rustc_mir_dataflow = { path = "../rustc_mir_dataflow" }
 rustc_serialize = { path = "../rustc_serialize" }
 rustc_session = { path = "../rustc_session" }

compiler/rustc_mir_transform/src/const_prop.rs

@@ -29,8 +29,8 @@
 use rustc_trait_selection::traits;
 
 use crate::MirPass;
-use rustc_mir::const_eval::ConstEvalErr;
-use rustc_mir::interpret::{
+use rustc_const_eval::const_eval::ConstEvalErr;
+use rustc_const_eval::interpret::{
     self, compile_time_machine, AllocId, Allocation, ConstValue, CtfeValidationMode, Frame, ImmTy,
     Immediate, InterpCx, InterpResult, LocalState, LocalValue, MemPlace, MemoryKind, OpTy,
     Operand as InterpOperand, PlaceTy, Scalar, ScalarMaybeUninit, StackPopCleanup, StackPopUnwind,

compiler/rustc_mir_transform/src/lib.rs

@@ -19,6 +19,7 @@
 extern crate rustc_middle;
 
 use required_consts::RequiredConstsVisitor;
+use rustc_const_eval::util;
 use rustc_data_structures::fx::FxHashSet;
 use rustc_data_structures::steal::Steal;
 use rustc_hir as hir;
@@ -29,7 +30,6 @@
 use rustc_middle::mir::{traversal, Body, ConstQualifs, MirPhase, Promoted};
 use rustc_middle::ty::query::Providers;
 use rustc_middle::ty::{self, TyCtxt, TypeFoldable};
-use rustc_mir::util;
 use rustc_span::{Span, Symbol};
 
 mod abort_unwinding_calls;
@@ -73,10 +73,10 @@
 mod uninhabited_enum_branching;
 mod unreachable_prop;
 
-use rustc_mir::transform::check_consts;
-use rustc_mir::transform::promote_consts;
-use rustc_mir::transform::validate;
-use rustc_mir::transform::MirPass;
+use rustc_const_eval::transform::check_consts;
+use rustc_const_eval::transform::promote_consts;
+use rustc_const_eval::transform::validate;
+use rustc_const_eval::transform::MirPass;
 use rustc_mir_dataflow::rustc_peek;
 
 pub fn provide(providers: &mut Providers) {

compiler/rustc_mir_transform/src/lower_slice_len.rs

 //! This pass lowers calls to core::slice::len to just Len op.
 //! It should run before inlining!
 
+use crate::MirPass;
 use rustc_hir::def_id::DefId;
 use rustc_index::vec::IndexVec;
 use rustc_middle::mir::*;
 use rustc_middle::ty::{self, TyCtxt};
-use rustc_mir::transform::MirPass;
 
 pub struct LowerSliceLenCalls;
 

compiler/rustc_mir_transform/src/match_branches.rs

@@ -134,7 +134,7 @@ fn run_pass(&self, tcx: TyCtxt<'tcx>, body: &mut Body<'tcx>) {
                             let const_cmp = Operand::const_from_scalar(
                                 tcx,
                                 switch_ty,
-                                rustc_mir::interpret::Scalar::from_uint(val, size),
+                                rustc_const_eval::interpret::Scalar::from_uint(val, size),
                                 rustc_span::DUMMY_SP,
                             );
                             let op = if f_b { BinOp::Eq } else { BinOp::Ne };

compiler/rustc_typeck/src/check/generator_interior.rs

 //! This calculates the types which has storage which lives across a suspension point in a
 //! generator from the perspective of typeck. The actual types used at runtime
-//! is calculated in `rustc_mir::transform::generator` and may be a subset of the
+//! is calculated in `rustc_const_eval::transform::generator` and may be a subset of the
 //! types computed here.
 
 use super::FnCtxt;

src/librustdoc/clean/mod.rs

@@ -11,6 +11,7 @@
 
 use rustc_ast as ast;
 use rustc_attr as attr;
+use rustc_const_eval::const_eval::{is_const_fn, is_unstable_const_fn};
 use rustc_data_structures::fx::{FxHashMap, FxHashSet};
 use rustc_hir as hir;
 use rustc_hir::def::{CtorKind, DefKind, Res};
@@ -22,7 +23,6 @@
 use rustc_middle::ty::subst::{InternalSubsts, Subst};
 use rustc_middle::ty::{self, AdtKind, DefIdTree, Lift, Ty, TyCtxt};
 use rustc_middle::{bug, span_bug};
-use rustc_mir::const_eval::{is_const_fn, is_unstable_const_fn};
 use rustc_span::hygiene::{AstPass, MacroKind};
 use rustc_span::symbol::{kw, sym, Ident, Symbol};
 use rustc_span::{self, ExpnKind};

src/librustdoc/lib.rs

@@ -34,6 +34,7 @@
 extern crate rustc_ast_lowering;
 extern crate rustc_ast_pretty;
 extern crate rustc_attr;
+extern crate rustc_const_eval;
 extern crate rustc_data_structures;
 extern crate rustc_driver;
 extern crate rustc_errors;
@@ -49,7 +50,6 @@
 extern crate rustc_lint_defs;
 extern crate rustc_metadata;
 extern crate rustc_middle;
-extern crate rustc_mir;
 extern crate rustc_parse;
 extern crate rustc_passes;
 extern crate rustc_resolve;

src/test/run-make-fulldeps/sepcomp-cci-copies/Makefile

@@ -3,7 +3,7 @@
 # Check that cross-crate inlined items are inlined in all compilation units
 # that refer to them, and not in any other compilation units.
 # Note that we have to pass `-C codegen-units=6` because up to two CGUs may be
-# created for each source module (see `rustc_mir::monomorphize::partitioning`).
+# created for each source module (see `rustc_const_eval::monomorphize::partitioning`).
 
 all:
 	$(RUSTC) cci_lib.rs

src/tools/clippy/clippy_utils/src/lib.rs

@@ -17,6 +17,7 @@
 extern crate rustc_ast;
 extern crate rustc_ast_pretty;
 extern crate rustc_attr;
+extern crate rustc_const_eval;
 extern crate rustc_data_structures;
 extern crate rustc_errors;
 extern crate rustc_hir;
@@ -24,7 +25,6 @@
 extern crate rustc_lexer;
 extern crate rustc_lint;
 extern crate rustc_middle;
-extern crate rustc_mir;
 extern crate rustc_session;
 extern crate rustc_span;
 extern crate rustc_target;

src/tools/clippy/clippy_utils/src/qualify_min_const_fn.rs

@@ -366,7 +366,7 @@ fn check_terminator(
 }
 
 fn is_const_fn(tcx: TyCtxt<'_>, def_id: DefId, msrv: Option<&RustcVersion>) -> bool {
-    rustc_mir::const_eval::is_const_fn(tcx, def_id)
+    rustc_const_eval::const_eval::is_const_fn(tcx, def_id)
         && tcx.lookup_const_stability(def_id).map_or(true, |const_stab| {
             if let rustc_attr::StabilityLevel::Stable { since } = const_stab.level {
                 // Checking MSRV is manually necessary because `rustc` has no such concept. This entire