Move mir validation out of tree

src/librustc/Cargo.toml

@@ -24,7 +24,6 @@ rustc_errors = { path = "../librustc_errors" }
 serialize = { path = "../libserialize" }
 syntax = { path = "../libsyntax" }
 syntax_pos = { path = "../libsyntax_pos" }
-regex = "0.2.2"
 backtrace = "0.3.3"
 byteorder = { version = "1.1", features = ["i128"]}
 

src/librustc/lib.rs

@@ -92,7 +92,6 @@ extern crate serialize as rustc_serialize; // used by deriving
 
 extern crate rustc_apfloat;
 extern crate byteorder;
-extern crate regex;
 extern crate backtrace;
 
 // Note that librustc doesn't actually depend on these crates, see the note in

src/librustc_mir/Cargo.toml

@@ -13,7 +13,6 @@ bitflags = "1.0"
 graphviz = { path = "../libgraphviz" }
 log = "0.3"
 log_settings = "0.1.1"
-lazy_static = "1.0"
 rustc = { path = "../librustc" }
 rustc_const_eval = { path = "../librustc_const_eval" }
 rustc_const_math = { path = "../librustc_const_math" }
@@ -23,5 +22,4 @@ serialize = { path = "../libserialize" }
 syntax = { path = "../libsyntax" }
 syntax_pos = { path = "../libsyntax_pos" }
 byteorder = { version = "1.1", features = ["i128"] }
-regex = "0.2"
 rustc_apfloat = { path = "../librustc_apfloat" }

src/librustc_mir/interpret/eval_context.rs

@@ -1,4 +1,4 @@
-use std::collections::{HashMap, HashSet};
+use std::collections::HashSet;
 use std::fmt::Write;
 
 use rustc::hir::def_id::DefId;
@@ -13,13 +13,13 @@ use rustc_data_structures::indexed_vec::Idx;
 use syntax::codemap::{self, DUMMY_SP};
 use syntax::ast::Mutability;
 use rustc::mir::interpret::{
-    PtrAndAlign, DynamicLifetime, GlobalId, Value, Pointer, PrimVal, PrimValKind,
+    PtrAndAlign, GlobalId, Value, Pointer, PrimVal, PrimValKind,
     EvalError, EvalResult, EvalErrorKind, MemoryPointer,
 };
 
 use super::{Place, PlaceExtra, Memory,
             HasMemory, MemoryKind, operator,
-            ValidationQuery, Machine};
+            Machine};
 
 pub struct EvalContext<'a, 'tcx: 'a, M: Machine<'tcx>> {
     /// Stores the `Machine` instance.
@@ -34,9 +34,6 @@ pub struct EvalContext<'a, 'tcx: 'a, M: Machine<'tcx>> {
     /// The virtual memory system.
     pub memory: Memory<'a, 'tcx, M>,
 
-    /// Places that were suspended by the validation subsystem, and will be recovered later
-    pub(crate) suspended: HashMap<DynamicLifetime, Vec<ValidationQuery<'tcx>>>,
-
     /// The virtual call stack.
     pub(crate) stack: Vec<Frame<'tcx>>,
 
@@ -203,7 +200,6 @@ impl<'a, 'tcx, M: Machine<'tcx>> EvalContext<'a, 'tcx, M> {
             tcx,
             param_env,
             memory: Memory::new(tcx, limits.memory_size, memory_data),
-            suspended: HashMap::new(),
             stack: Vec::new(),
             stack_limit: limits.stack_limit,
             steps_remaining: limits.step_limit,
@@ -471,7 +467,7 @@ impl<'a, 'tcx, M: Machine<'tcx>> EvalContext<'a, 'tcx, M> {
 
     pub(super) fn pop_stack_frame(&mut self) -> EvalResult<'tcx> {
         ::log_settings::settings().indentation -= 1;
-        self.end_region(None)?;
+        M::end_region(self, None)?;
         let frame = self.stack.pop().expect(
             "tried to pop a stack frame, but there were none",
         );
@@ -996,7 +992,7 @@ impl<'a, 'tcx, M: Machine<'tcx>> EvalContext<'a, 'tcx, M> {
     }
 
     /// ensures this Value is not a ByRef
-    pub(super) fn follow_by_ref_value(
+    pub fn follow_by_ref_value(
         &self,
         value: Value,
         ty: Ty<'tcx>,
@@ -1396,15 +1392,15 @@ impl<'a, 'tcx, M: Machine<'tcx>> EvalContext<'a, 'tcx, M> {
         self.stack.last().expect("no call frames exist")
     }
 
-    pub(super) fn frame_mut(&mut self) -> &mut Frame<'tcx> {
+    pub fn frame_mut(&mut self) -> &mut Frame<'tcx> {
         self.stack.last_mut().expect("no call frames exist")
     }
 
     pub(super) fn mir(&self) -> &'tcx mir::Mir<'tcx> {
         self.frame().mir
     }
 
-    pub(super) fn substs(&self) -> &'tcx Substs<'tcx> {
+    pub fn substs(&self) -> &'tcx Substs<'tcx> {
         if let Some(frame) = self.stack.last() {
             frame.instance.substs
         } else {

src/librustc_mir/interpret/machine.rs

@@ -2,8 +2,8 @@
 //! This separation exists to ensure that no fancy miri features like
 //! interpreting common C functions leak into CTFE.
 
-use rustc::mir::interpret::{EvalResult, PrimVal};
-use super::{EvalContext, Place, ValTy};
+use rustc::mir::interpret::{EvalResult, PrimVal, MemoryPointer, AccessKind};
+use super::{EvalContext, Place, ValTy, Memory};
 
 use rustc::mir;
 use rustc::ty::{self, Ty};
@@ -77,4 +77,41 @@ pub trait Machine<'tcx>: Sized {
         instance: ty::Instance<'tcx>,
         mutability: Mutability,
     ) -> EvalResult<'tcx>;
+
+    fn check_locks<'a>(
+        _mem: &Memory<'a, 'tcx, Self>,
+        _ptr: MemoryPointer,
+        _size: u64,
+        _access: AccessKind,
+    ) -> EvalResult<'tcx> {
+        Ok(())
+    }
+
+    fn add_lock<'a>(
+        _mem: &mut Memory<'a, 'tcx, Self>,
+        _id: u64,
+    ) {}
+
+    fn free_lock<'a>(
+        _mem: &mut Memory<'a, 'tcx, Self>,
+        _id: u64,
+        _len: u64,
+    ) -> EvalResult<'tcx> {
+        Ok(())
+    }
+
+    fn end_region<'a>(
+        _ecx: &mut EvalContext<'a, 'tcx, Self>,
+        _reg: Option<::rustc::middle::region::Scope>,
+    ) -> EvalResult<'tcx> {
+        Ok(())
+    }
+
+    fn validation_op<'a>(
+        _ecx: &mut EvalContext<'a, 'tcx, Self>,
+        _op: ::rustc::mir::ValidationOp,
+        _operand: &::rustc::mir::ValidationOperand<'tcx, ::rustc::mir::Place<'tcx>>,
+    ) -> EvalResult<'tcx> {
+        Ok(())
+    }
 }