Avoid matching with reference patterns.

https://github.com/rust-lang-nursery/rust-clippy/wiki#match_ref_pats

cranelift/src/wasm.rs

@@ -149,9 +149,9 @@ fn handle_module(
         vprint!(flag_verbose, "Checking...   ");
         terminal.reset().unwrap();
         for func in translation.functions.iter() {
-            let il = match func {
-                &FunctionTranslation::Import() => continue,
-                &FunctionTranslation::Code { ref il, .. } => il.clone(),
+            let il = match *func {
+                FunctionTranslation::Import() => continue,
+                FunctionTranslation::Code { ref il, .. } => il.clone(),
             };
             match verifier::verify_function(&il, None) {
                 Ok(()) => (),
@@ -167,9 +167,9 @@ fn handle_module(
         vprint!(flag_verbose, "Optimizing... ");
         terminal.reset().unwrap();
         for func in translation.functions.iter() {
-            let mut il = match func {
-                &FunctionTranslation::Import() => continue,
-                &FunctionTranslation::Code { ref il, .. } => il.clone(),
+            let mut il = match *func {
+                FunctionTranslation::Import() => continue,
+                FunctionTranslation::Code { ref il, .. } => il.clone(),
             };
             let mut loop_analysis = LoopAnalysis::new();
             let mut cfg = ControlFlowGraph::new();

lib/cretonne/src/ir/globalvar.rs

@@ -29,9 +29,9 @@ pub enum GlobalVarData {
 
 impl fmt::Display for GlobalVarData {
     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
-        match self {
-            &GlobalVarData::VmCtx { offset } => write!(f, "vmctx{}", offset),
-            &GlobalVarData::Deref { base, offset } => write!(f, "deref({}){}", base, offset),
+        match *self {
+            GlobalVarData::VmCtx { offset } => write!(f, "vmctx{}", offset),
+            GlobalVarData::Deref { base, offset } => write!(f, "deref({}){}", base, offset),
         }
     }
 }

lib/frontend/src/ssa.rs

@@ -78,17 +78,17 @@ enum BlockData<Variable> {
 
 impl<Variable> BlockData<Variable> {
     fn add_predecessor(&mut self, pred: Block, inst: Inst) {
-        match self {
-            &mut BlockData::EbbBody { .. } => panic!("you can't add a predecessor to a body block"),
-            &mut BlockData::EbbHeader(ref mut data) => {
+        match *self {
+            BlockData::EbbBody { .. } => panic!("you can't add a predecessor to a body block"),
+            BlockData::EbbHeader(ref mut data) => {
                 data.predecessors.push((pred, inst));
             }
         }
     }
     fn remove_predecessor(&mut self, inst: Inst) -> Block {
-        match self {
-            &mut BlockData::EbbBody { .. } => panic!("should not happen"),
-            &mut BlockData::EbbHeader(ref mut data) => {
+        match *self {
+            BlockData::EbbBody { .. } => panic!("should not happen"),
+            BlockData::EbbHeader(ref mut data) => {
                 // This a linear complexity operation but the number of predecessors is low
                 // in all non-pathological cases
                 let pred: usize =

lib/wasm/src/code_translator.rs

@@ -72,54 +72,54 @@ enum ControlStackFrame {
 /// Helper methods for the control stack objects.
 impl ControlStackFrame {
     fn return_values(&self) -> &[Type] {
-        match self {
-            &ControlStackFrame::If { ref return_values, .. } |
-            &ControlStackFrame::Block { ref return_values, .. } |
-            &ControlStackFrame::Loop { ref return_values, .. } => return_values.as_slice(),
+        match *self {
+            ControlStackFrame::If { ref return_values, .. } |
+            ControlStackFrame::Block { ref return_values, .. } |
+            ControlStackFrame::Loop { ref return_values, .. } => return_values.as_slice(),
         }
     }
     fn following_code(&self) -> Ebb {
-        match self {
-            &ControlStackFrame::If { destination, .. } |
-            &ControlStackFrame::Block { destination, .. } |
-            &ControlStackFrame::Loop { destination, .. } => destination,
+        match *self {
+            ControlStackFrame::If { destination, .. } |
+            ControlStackFrame::Block { destination, .. } |
+            ControlStackFrame::Loop { destination, .. } => destination,
         }
     }
     fn br_destination(&self) -> Ebb {
-        match self {
-            &ControlStackFrame::If { destination, .. } |
-            &ControlStackFrame::Block { destination, .. } => destination,
-            &ControlStackFrame::Loop { header, .. } => header,
+        match *self {
+            ControlStackFrame::If { destination, .. } |
+            ControlStackFrame::Block { destination, .. } => destination,
+            ControlStackFrame::Loop { header, .. } => header,
         }
     }
     fn original_stack_size(&self) -> usize {
-        match self {
-            &ControlStackFrame::If { original_stack_size, .. } |
-            &ControlStackFrame::Block { original_stack_size, .. } |
-            &ControlStackFrame::Loop { original_stack_size, .. } => original_stack_size,
+        match *self {
+            ControlStackFrame::If { original_stack_size, .. } |
+            ControlStackFrame::Block { original_stack_size, .. } |
+            ControlStackFrame::Loop { original_stack_size, .. } => original_stack_size,
         }
     }
     fn is_loop(&self) -> bool {
-        match self {
-            &ControlStackFrame::If { .. } |
-            &ControlStackFrame::Block { .. } => false,
-            &ControlStackFrame::Loop { .. } => true,
+        match *self {
+            ControlStackFrame::If { .. } |
+            ControlStackFrame::Block { .. } => false,
+            ControlStackFrame::Loop { .. } => true,
         }
     }
 
     fn is_reachable(&self) -> bool {
-        match self {
-            &ControlStackFrame::If { reachable, .. } |
-            &ControlStackFrame::Block { reachable, .. } |
-            &ControlStackFrame::Loop { reachable, .. } => reachable,
+        match *self {
+            ControlStackFrame::If { reachable, .. } |
+            ControlStackFrame::Block { reachable, .. } |
+            ControlStackFrame::Loop { reachable, .. } => reachable,
         }
     }
 
     fn set_reachable(&mut self) {
-        match self {
-            &mut ControlStackFrame::If { ref mut reachable, .. } |
-            &mut ControlStackFrame::Block { ref mut reachable, .. } |
-            &mut ControlStackFrame::Loop { ref mut reachable, .. } => *reachable = true,
+        match *self {
+            ControlStackFrame::If { ref mut reachable, .. } |
+            ControlStackFrame::Block { ref mut reachable, .. } |
+            ControlStackFrame::Loop { ref mut reachable, .. } => *reachable = true,
         }
     }
 }
@@ -1314,9 +1314,9 @@ fn find_function_import(
     let sig_index = functions[index];
     if let Some(local_sig_index) = func_imports.signatures.get(&(sig_index as usize)) {
         let local_func_index = builder.import_function(ExtFuncData {
-            name: match exports {
-                &None => FunctionName::new(""),
-                &Some(ref exports) => {
+            name: match *exports {
+                None => FunctionName::new(""),
+                Some(ref exports) => {
                     match exports.get(&index) {
                         None => FunctionName::new(""),
                         Some(name) => FunctionName::new(name.clone()),
@@ -1335,9 +1335,9 @@ fn find_function_import(
         sig_local_index,
     );
     let local_func_index = builder.import_function(ExtFuncData {
-        name: match exports {
-            &None => FunctionName::new(""),
-            &Some(ref exports) => {
+        name: match *exports {
+            None => FunctionName::new(""),
+            Some(ref exports) => {
                 match exports.get(&index) {
                     None => FunctionName::new(""),
                     Some(name) => FunctionName::new(name.clone()),

lib/wasm/src/sections_translator.rs

@@ -132,8 +132,8 @@ pub fn parse_export_section(
                 ref kind,
                 index,
             } => {
-                match kind {
-                    &ExternalKind::Function => {
+                match *kind {
+                    ExternalKind::Function => {
                         exports.insert(
                             index as FunctionIndex,
                             String::from(from_utf8(field).unwrap()),

lib/wasm/tests/testsuite.rs

@@ -70,9 +70,9 @@ fn handle_module(path: PathBuf) -> Result<(), String> {
         }
     };
     for func in translation.functions.iter() {
-        let il = match func {
-            &FunctionTranslation::Import() => continue,
-            &FunctionTranslation::Code { ref il, .. } => il.clone(),
+        let il = match *func {
+            FunctionTranslation::Import() => continue,
+            FunctionTranslation::Code { ref il, .. } => il.clone(),
         };
         match verifier::verify_function(&il, None) {
             Ok(()) => (),