Move the dataflow framework to its own crate.

Author: cjgillot

clippy_lints/src/lib.rs

@@ -31,7 +31,7 @@ extern crate rustc_infer;
 extern crate rustc_lexer;
 extern crate rustc_lint;
 extern crate rustc_middle;
-extern crate rustc_mir;
+extern crate rustc_mir_dataflow;
 extern crate rustc_parse;
 extern crate rustc_parse_format;
 extern crate rustc_session;

clippy_lints/src/redundant_clone.rs

@@ -15,7 +15,7 @@ use rustc_middle::mir::{
     Mutability,
 };
 use rustc_middle::ty::{self, fold::TypeVisitor, Ty, TyCtxt};
-use rustc_mir::dataflow::{Analysis, AnalysisDomain, GenKill, GenKillAnalysis, ResultsCursor};
+use rustc_mir_dataflow::{Analysis, AnalysisDomain, GenKill, GenKillAnalysis, ResultsCursor};
 use rustc_session::{declare_lint_pass, declare_tool_lint};
 use rustc_span::source_map::{BytePos, Span};
 use rustc_span::sym;
@@ -625,7 +625,10 @@ impl<'a, 'tcx> mir::visit::Visitor<'tcx> for PossibleBorrowerVisitor<'a, 'tcx> {
                 .flat_map(HybridBitSet::iter)
                 .collect();
 
-            if ContainsRegion(self.cx.tcx).visit_ty(self.body.local_decls[*dest].ty).is_break() {
+            if ContainsRegion(self.cx.tcx)
+                .visit_ty(self.body.local_decls[*dest].ty)
+                .is_break()
+            {
                 mutable_variables.push(*dest);
             }