Update to the rustfmt in rust 1.31, which is now stable.

lib/codegen/src/binemit/relaxation.rs

@@ -186,7 +186,8 @@ fn relax_branch(
                 debug!("  trying [{}]: OK", encinfo.display(enc));
                 true
             }
-        }) {
+        })
+    {
         cur.func.encodings[inst] = enc;
         return encinfo.byte_size(enc, inst, &divert, &cur.func);
     }

lib/codegen/src/ir/dfg.rs

@@ -802,9 +802,9 @@ impl DataFlowGraph {
             .remove(num as usize, &mut self.value_lists);
         for index in num..(self.num_ebb_params(ebb) as u16) {
             match self.values[self.ebbs[ebb]
-                                  .params
-                                  .get(index as usize, &self.value_lists)
-                                  .unwrap()]
+                .params
+                .get(index as usize, &self.value_lists)
+                .unwrap()]
             {
                 ValueData::Param { ref mut num, .. } => {
                     *num -= 1;

lib/codegen/src/isa/registers.rs

@@ -89,7 +89,8 @@ impl RegBank {
                     None
                 }
             }
-        }.and_then(|offset| {
+        }
+        .and_then(|offset| {
             if offset < self.units {
                 Some(offset + self.first_unit)
             } else {

lib/codegen/src/isa/x86/abi.rs

@@ -98,7 +98,8 @@ impl ArgAssigner for Args {
                         RU::r14
                     } else {
                         RU::rsi
-                    } as RegUnit).into()
+                    } as RegUnit)
+                    .into()
                 }
                 // This is SpiderMonkey's `WasmTableCallSigReg`.
                 ArgumentPurpose::SignatureId => return ArgumentLoc::Reg(RU::r10 as RegUnit).into(),

lib/codegen/src/legalizer/boundary.rs

@@ -575,7 +575,8 @@ pub fn handle_return_abi(inst: Inst, func: &mut Function, cfg: &ControlFlowGraph
             rt.purpose == ArgumentPurpose::Link
                 || rt.purpose == ArgumentPurpose::StructReturn
                 || rt.purpose == ArgumentPurpose::VMContext
-        }).count();
+        })
+        .count();
     let abi_args = func.signature.returns.len() - special_args;
 
     let pos = &mut FuncCursor::new(func).at_inst(inst);
@@ -694,7 +695,8 @@ fn spill_call_arguments(pos: &mut FuncCursor) -> bool {
                     }
                     _ => None,
                 }
-            }).collect::<Vec<_>>()
+            })
+            .collect::<Vec<_>>()
     };
 
     if arglist.is_empty() {

lib/codegen/src/legalizer/split.rs

@@ -165,7 +165,8 @@ fn split_any(
                     .get_mut(
                         num_fixed_args + repair.hi_num,
                         &mut pos.func.dfg.value_lists,
-                    ).unwrap() = hi;
+                    )
+                    .unwrap() = hi;
             } else {
                 // We need to append one or more arguments. If we're adding more than one argument,
                 // there must be pending repairs on the stack that will fill in the correct values

lib/codegen/src/lib.rs

@@ -3,10 +3,7 @@
 #![deny(missing_docs, trivial_numeric_casts, unused_extern_crates)]
 #![warn(unused_import_braces)]
 #![cfg_attr(feature = "std", deny(unstable_features))]
-#![cfg_attr(
-    feature = "clippy",
-    plugin(clippy(conf_file = "../../clippy.toml"))
-)]
+#![cfg_attr(feature = "clippy", plugin(clippy(conf_file = "../../clippy.toml")))]
 #![cfg_attr(feature="cargo-clippy", allow(
 // Produces only a false positive:
                 while_let_loop,

lib/codegen/src/print_errors.rs

@@ -30,14 +30,16 @@ pub fn pretty_verifier_error<'a>(
         &mut w,
         func,
         isa,
-    ).unwrap();
+    )
+    .unwrap();
 
     writeln!(
         w,
         "\n; {} verifier error{} detected (see above). Compilation aborted.",
         num_errors,
         if num_errors == 1 { "" } else { "s" }
-    ).unwrap();
+    )
+    .unwrap();
 
     w
 }

lib/codegen/src/regalloc/coloring.rs

@@ -914,12 +914,10 @@ impl<'a> Context<'a> {
             Table(jt, ebb) => {
                 let lr = &self.liveness[value];
                 !lr.is_local()
-                    && (ebb.map_or(false, |ebb| lr.is_livein(ebb, ctx)) || self
-                        .cur
-                        .func
-                        .jump_tables[jt]
-                        .iter()
-                        .any(|ebb| lr.is_livein(*ebb, ctx)))
+                    && (ebb.map_or(false, |ebb| lr.is_livein(ebb, ctx))
+                        || self.cur.func.jump_tables[jt]
+                            .iter()
+                            .any(|ebb| lr.is_livein(*ebb, ctx)))
             }
         }
     }

lib/codegen/src/regalloc/context.rs

@@ -116,7 +116,8 @@ impl Context {
                     &self.liveness,
                     &self.virtregs,
                     &mut errors,
-                ).is_ok();
+                )
+                .is_ok();
 
             if !ok {
                 return Err(errors.into());
@@ -144,7 +145,8 @@ impl Context {
                     &self.liveness,
                     &self.virtregs,
                     &mut errors,
-                ).is_ok();
+                )
+                .is_ok();
 
             if !ok {
                 return Err(errors.into());
@@ -171,7 +173,8 @@ impl Context {
                     &self.liveness,
                     &self.virtregs,
                     &mut errors,
-                ).is_ok();
+                )
+                .is_ok();
 
             if !ok {
                 return Err(errors.into());
@@ -193,7 +196,8 @@ impl Context {
                     &self.liveness,
                     &self.virtregs,
                     &mut errors,
-                ).is_ok();
+                )
+                .is_ok();
 
             if !ok {
                 return Err(errors.into());

lib/codegen/src/regalloc/liveness.rs

@@ -220,7 +220,8 @@ fn get_or_create<'a>(
                         func.dfg
                             .call_signature(inst)
                             .map(|sig| Affinity::abi(&func.dfg.signatures[sig].returns[rnum], isa))
-                    }).unwrap_or_default();
+                    })
+                    .unwrap_or_default();
             }
             ValueDef::Param(ebb, num) => {
                 def = ebb.into();

lib/codegen/src/regalloc/register_set.rs

@@ -207,7 +207,8 @@ impl<'a> fmt::Display for DisplayRegisterSet<'a> {
                                     .unwrap_or_else(|| char::from_digit(
                                         u32::from(offset % 10),
                                         10
-                                    ).unwrap())
+                                    )
+                                    .unwrap())
                             )?;
                         }
                     }

lib/codegen/src/regalloc/reload.rs

@@ -264,9 +264,9 @@ impl<'a> Context<'a> {
 
         // Same thing for spilled call return values.
         let retvals = &defs[self.cur.func.dfg[inst]
-                                .opcode()
-                                .constraints()
-                                .num_fixed_results()..];
+            .opcode()
+            .constraints()
+            .num_fixed_results()..];
         if !retvals.is_empty() {
             let sig = self
                 .cur

lib/codegen/src/regalloc/spilling.rs

@@ -504,7 +504,8 @@ impl<'a> Context<'a> {
                     }
                 }
                 None
-            }).min_by(|&a, &b| {
+            })
+            .min_by(|&a, &b| {
                 // Find the minimum candidate according to the RPO of their defs.
                 self.domtree.rpo_cmp(
                     self.cur.func.dfg.value_def(a),

lib/codegen/src/timing.rs

@@ -37,7 +37,7 @@ macro_rules! define_passes {
 }
 
 // Pass definitions.
-define_passes!{
+define_passes! {
     Pass, NUM_PASSES, DESCRIPTIONS;
 
     process_file: "Processing test file",
@@ -176,7 +176,7 @@ mod details {
     }
 
     /// Information about passes in a single thread.
-    thread_local!{
+    thread_local! {
         static CURRENT_PASS: Cell<Pass> = Cell::new(Pass::None);
         static PASS_TIME: RefCell<PassTimes> = RefCell::new(Default::default());
     }

lib/codegen/src/verifier/mod.rs

@@ -887,11 +887,11 @@ impl<'a> Verifier<'a> {
                     );
                 }
                 // The defining EBB dominates the instruction using this value.
-                if is_reachable && !self.expected_domtree.dominates(
-                    ebb,
-                    loc_inst,
-                    &self.func.layout,
-                ) {
+                if is_reachable
+                    && !self
+                        .expected_domtree
+                        .dominates(ebb, loc_inst, &self.func.layout)
+                {
                     return fatal!(
                         errors,
                         loc_inst,
@@ -1559,7 +1559,8 @@ impl<'a> Verifier<'a> {
                     &self.func,
                     &self.func.dfg[inst],
                     self.func.dfg.ctrl_typevar(inst),
-                ).peekable();
+                )
+                .peekable();
 
             if encodings.peek().is_none() {
                 return nonfatal!(