diff --git a/cranelift/src/filetest/binemit.rs b/cranelift/src/filetest/binemit.rs
index cc8dcad0b7..9c19533c64 100644
--- a/cranelift/src/filetest/binemit.rs
+++ b/cranelift/src/filetest/binemit.rs
@@ -35,8 +35,8 @@ struct TextSink {
 
 impl TextSink {
     /// Create a new empty TextSink.
-    pub fn new(isa: &TargetIsa) -> TextSink {
-        TextSink {
+    pub fn new(isa: &TargetIsa) -> Self {
+        Self {
             rnames: isa.reloc_names(),
             offset: 0,
             text: String::new(),
diff --git a/cranelift/src/filetest/concurrent.rs b/cranelift/src/filetest/concurrent.rs
index 430fb54142..4f7cca6935 100644
--- a/cranelift/src/filetest/concurrent.rs
+++ b/cranelift/src/filetest/concurrent.rs
@@ -38,7 +38,7 @@ pub struct ConcurrentRunner {
 
 impl ConcurrentRunner {
     /// Create a new `ConcurrentRunner` with threads spun up.
-    pub fn new() -> ConcurrentRunner {
+    pub fn new() -> Self {
         let (request_tx, request_rx) = channel();
         let request_mutex = Arc::new(Mutex::new(request_rx));
         let (reply_tx, reply_rx) = channel();
@@ -51,7 +51,7 @@ impl ConcurrentRunner {
             })
             .collect();
 
-        ConcurrentRunner {
+        Self {
             request_tx: Some(request_tx),
             reply_rx,
             handles,
diff --git a/cranelift/src/filetest/runner.rs b/cranelift/src/filetest/runner.rs
index 6425482084..8e0f7721a7 100644
--- a/cranelift/src/filetest/runner.rs
+++ b/cranelift/src/filetest/runner.rs
@@ -81,8 +81,8 @@ pub struct TestRunner {
 
 impl TestRunner {
     /// Create a new blank TrstRunner.
-    pub fn new(verbose: bool) -> TestRunner {
-        TestRunner {
+    pub fn new(verbose: bool) -> Self {
+        Self {
             verbose,
             dir_stack: Vec::new(),
             tests: Vec::new(),
diff --git a/lib/cretonne/src/bitset.rs b/lib/cretonne/src/bitset.rs
index 2ed4efe15b..62e0286bb3 100644
--- a/lib/cretonne/src/bitset.rs
+++ b/lib/cretonne/src/bitset.rs
@@ -61,7 +61,7 @@ where
     }
 
     /// Construct a BitSet with the half-open range [lo,hi) filled in
-    pub fn from_range(lo: u8, hi: u8) -> BitSet<T> {
+    pub fn from_range(lo: u8, hi: u8) -> Self {
         assert!(lo <= hi);
         assert!((hi as usize) <= Self::bits());
         let one: T = T::from(1);
diff --git a/lib/cretonne/src/context.rs b/lib/cretonne/src/context.rs
index ca2cd43854..6f7f7a65c1 100644
--- a/lib/cretonne/src/context.rs
+++ b/lib/cretonne/src/context.rs
@@ -47,8 +47,8 @@ impl Context {
     ///
     /// The returned instance should be reused for compiling multiple functions in order to avoid
     /// needless allocator thrashing.
-    pub fn new() -> Context {
-        Context {
+    pub fn new() -> Self {
+        Self {
             func: Function::new(),
             cfg: ControlFlowGraph::new(),
             domtree: DominatorTree::new(),
diff --git a/lib/cretonne/src/dominator_tree.rs b/lib/cretonne/src/dominator_tree.rs
index 4a3965540e..2c2fd1b48c 100644
--- a/lib/cretonne/src/dominator_tree.rs
+++ b/lib/cretonne/src/dominator_tree.rs
@@ -204,8 +204,8 @@ impl DominatorTree {
 impl DominatorTree {
     /// Allocate a new blank dominator tree. Use `compute` to compute the dominator tree for a
     /// function.
-    pub fn new() -> DominatorTree {
-        DominatorTree {
+    pub fn new() -> Self {
+        Self {
             nodes: EntityMap::new(),
             postorder: Vec::new(),
             stack: Vec::new(),
@@ -214,8 +214,8 @@ impl DominatorTree {
     }
 
     /// Allocate and compute a dominator tree.
-    pub fn with_function(func: &Function, cfg: &ControlFlowGraph) -> DominatorTree {
-        let mut domtree = DominatorTree::new();
+    pub fn with_function(func: &Function, cfg: &ControlFlowGraph) -> Self {
+        let mut domtree = Self::new();
         domtree.compute(func, cfg);
         domtree
     }
diff --git a/lib/cretonne/src/entity/keys.rs b/lib/cretonne/src/entity/keys.rs
index 795e896a00..3ad5b660b6 100644
--- a/lib/cretonne/src/entity/keys.rs
+++ b/lib/cretonne/src/entity/keys.rs
@@ -12,8 +12,8 @@ pub struct Keys<K: EntityRef> {
 
 impl<K: EntityRef> Keys<K> {
     /// Create a `Keys` iterator that visits `count` entities starting from 0.
-    pub fn new(count: usize) -> Keys<K> {
-        Keys {
+    pub fn new(count: usize) -> Self {
+        Self {
             pos: 0,
             rev_pos: count,
             unused: PhantomData,
diff --git a/lib/cretonne/src/entity/list.rs b/lib/cretonne/src/entity/list.rs
index 03c66a8ec0..c9bb5b1a69 100644
--- a/lib/cretonne/src/entity/list.rs
+++ b/lib/cretonne/src/entity/list.rs
@@ -68,7 +68,7 @@ pub struct EntityList<T: EntityRef> {
 /// Create an empty list.
 impl<T: EntityRef> Default for EntityList<T> {
     fn default() -> Self {
-        EntityList {
+        Self {
             index: 0,
             unused: PhantomData,
         }
@@ -82,7 +82,7 @@ impl<T: EntityRef> Hash for EntityList<T> {
 }
 
 impl<T: EntityRef> PartialEq for EntityList<T> {
-    fn eq(&self, _: &EntityList<T>) -> bool {
+    fn eq(&self, _: &Self) -> bool {
         panic!("eq called on EntityList");
     }
 }
@@ -121,8 +121,8 @@ fn is_sclass_min_length(len: usize) -> bool {
 
 impl<T: EntityRef> ListPool<T> {
     /// Create a new list pool.
-    pub fn new() -> ListPool<T> {
-        ListPool {
+    pub fn new() -> Self {
+        Self {
             data: Vec::new(),
             free: Vec::new(),
         }
@@ -311,7 +311,7 @@ impl<T: EntityRef> EntityList<T> {
     /// Take all elements from this list and return them as a new list. Leave this list empty.
     ///
     /// This is the equivalent of `Option::take()`.
-    pub fn take(&mut self) -> EntityList<T> {
+    pub fn take(&mut self) -> Self {
         mem::replace(self, Default::default())
     }
 
diff --git a/lib/cretonne/src/entity/map.rs b/lib/cretonne/src/entity/map.rs
index 200aa464c3..9622f93485 100644
--- a/lib/cretonne/src/entity/map.rs
+++ b/lib/cretonne/src/entity/map.rs
@@ -34,7 +34,7 @@ where
     where
         V: Default,
     {
-        EntityMap {
+        Self {
             elems: Vec::new(),
             default: Default::default(),
             unused: PhantomData,
@@ -45,7 +45,7 @@ where
     ///
     /// This constructor does not require V to implement Default.
     pub fn with_default(default: V) -> Self {
-        EntityMap {
+        Self {
             elems: Vec::new(),
             default: default,
             unused: PhantomData,
diff --git a/lib/cretonne/src/entity/primary.rs b/lib/cretonne/src/entity/primary.rs
index c0347304aa..137320f3e5 100644
--- a/lib/cretonne/src/entity/primary.rs
+++ b/lib/cretonne/src/entity/primary.rs
@@ -27,7 +27,7 @@ where
 {
     /// Create a new empty map.
     pub fn new() -> Self {
-        PrimaryMap {
+        Self {
             elems: Vec::new(),
             unused: PhantomData,
         }
diff --git a/lib/cretonne/src/entity/set.rs b/lib/cretonne/src/entity/set.rs
index b1c351b650..8b5d32e790 100644
--- a/lib/cretonne/src/entity/set.rs
+++ b/lib/cretonne/src/entity/set.rs
@@ -24,7 +24,7 @@ where
 {
     /// Create a new empty set.
     pub fn new() -> Self {
-        EntitySet {
+        Self {
             elems: Vec::new(),
             len: 0,
             unused: PhantomData,
diff --git a/lib/cretonne/src/entity/sparse.rs b/lib/cretonne/src/entity/sparse.rs
index 26be799afd..dacbf66031 100644
--- a/lib/cretonne/src/entity/sparse.rs
+++ b/lib/cretonne/src/entity/sparse.rs
@@ -66,7 +66,7 @@ where
 {
     /// Create a new empty mapping.
     pub fn new() -> Self {
-        SparseMap {
+        Self {
             sparse: EntityMap::new(),
             dense: Vec::new(),
         }
@@ -215,7 +215,7 @@ impl<T> SparseMapValue<T> for T
 where
     T: EntityRef,
 {
-    fn key(&self) -> T {
+    fn key(&self) -> Self {
         *self
     }
 }
diff --git a/lib/cretonne/src/flowgraph.rs b/lib/cretonne/src/flowgraph.rs
index 67ff150196..bc6096ad9a 100644
--- a/lib/cretonne/src/flowgraph.rs
+++ b/lib/cretonne/src/flowgraph.rs
@@ -51,16 +51,16 @@ pub struct ControlFlowGraph {
 
 impl ControlFlowGraph {
     /// Allocate a new blank control flow graph.
-    pub fn new() -> ControlFlowGraph {
-        ControlFlowGraph {
+    pub fn new() -> Self {
+        Self {
             data: EntityMap::new(),
             valid: false,
         }
     }
 
     /// Allocate and compute the control flow graph for `func`.
-    pub fn with_function(func: &Function) -> ControlFlowGraph {
-        let mut cfg = ControlFlowGraph::new();
+    pub fn with_function(func: &Function) -> Self {
+        let mut cfg = Self::new();
         cfg.compute(func);
         cfg
     }
diff --git a/lib/cretonne/src/ir/dfg.rs b/lib/cretonne/src/ir/dfg.rs
index 83a32f7ff8..e2328e46dc 100644
--- a/lib/cretonne/src/ir/dfg.rs
+++ b/lib/cretonne/src/ir/dfg.rs
@@ -62,8 +62,8 @@ pub struct DataFlowGraph {
 
 impl DataFlowGraph {
     /// Create a new empty `DataFlowGraph`.
-    pub fn new() -> DataFlowGraph {
-        DataFlowGraph {
+    pub fn new() -> Self {
+        Self {
             insts: PrimaryMap::new(),
             results: EntityMap::new(),
             ebbs: PrimaryMap::new(),
@@ -829,8 +829,8 @@ struct EbbData {
 }
 
 impl EbbData {
-    fn new() -> EbbData {
-        EbbData { params: ValueList::new() }
+    fn new() -> Self {
+        Self { params: ValueList::new() }
     }
 }
 
diff --git a/lib/cretonne/src/ir/extfunc.rs b/lib/cretonne/src/ir/extfunc.rs
index 4403b6ebef..b3c3a274e7 100644
--- a/lib/cretonne/src/ir/extfunc.rs
+++ b/lib/cretonne/src/ir/extfunc.rs
@@ -38,8 +38,8 @@ pub struct Signature {
 
 impl Signature {
     /// Create a new blank signature.
-    pub fn new(call_conv: CallConv) -> Signature {
-        Signature {
+    pub fn new(call_conv: CallConv) -> Self {
+        Self {
             params: Vec::new(),
             returns: Vec::new(),
             call_conv,
@@ -138,8 +138,8 @@ pub struct AbiParam {
 
 impl AbiParam {
     /// Create a parameter with default flags.
-    pub fn new(vt: Type) -> AbiParam {
-        AbiParam {
+    pub fn new(vt: Type) -> Self {
+        Self {
             value_type: vt,
             extension: ArgumentExtension::None,
             purpose: ArgumentPurpose::Normal,
@@ -148,8 +148,8 @@ impl AbiParam {
     }
 
     /// Create a special-purpose parameter that is not (yet) bound to a specific register.
-    pub fn special(vt: Type, purpose: ArgumentPurpose) -> AbiParam {
-        AbiParam {
+    pub fn special(vt: Type, purpose: ArgumentPurpose) -> Self {
+        Self {
             value_type: vt,
             extension: ArgumentExtension::None,
             purpose,
@@ -158,8 +158,8 @@ impl AbiParam {
     }
 
     /// Create a parameter for a special-purpose register.
-    pub fn special_reg(vt: Type, purpose: ArgumentPurpose, regunit: RegUnit) -> AbiParam {
-        AbiParam {
+    pub fn special_reg(vt: Type, purpose: ArgumentPurpose, regunit: RegUnit) -> Self {
+        Self {
             value_type: vt,
             extension: ArgumentExtension::None,
             purpose,
@@ -168,18 +168,18 @@ impl AbiParam {
     }
 
     /// Convert `self` to a parameter with the `uext` flag set.
-    pub fn uext(self) -> AbiParam {
+    pub fn uext(self) -> Self {
         debug_assert!(self.value_type.is_int(), "uext on {} arg", self.value_type);
-        AbiParam {
+        Self {
             extension: ArgumentExtension::Uext,
             ..self
         }
     }
 
     /// Convert `self` to a parameter type with the `sext` flag set.
-    pub fn sext(self) -> AbiParam {
+    pub fn sext(self) -> Self {
         debug_assert!(self.value_type.is_int(), "sext on {} arg", self.value_type);
-        AbiParam {
+        Self {
             extension: ArgumentExtension::Sext,
             ..self
         }
diff --git a/lib/cretonne/src/ir/function.rs b/lib/cretonne/src/ir/function.rs
index 4c348b6ce9..457b47a5e0 100644
--- a/lib/cretonne/src/ir/function.rs
+++ b/lib/cretonne/src/ir/function.rs
@@ -66,8 +66,8 @@ pub struct Function {
 
 impl Function {
     /// Create a function with the given name and signature.
-    pub fn with_name_signature(name: ExternalName, sig: Signature) -> Function {
-        Function {
+    pub fn with_name_signature(name: ExternalName, sig: Signature) -> Self {
+        Self {
             name,
             signature: sig,
             stack_slots: StackSlots::new(),
@@ -99,7 +99,7 @@ impl Function {
     }
 
     /// Create a new empty, anonymous function with a native calling convention.
-    pub fn new() -> Function {
+    pub fn new() -> Self {
         Self::with_name_signature(ExternalName::default(), Signature::new(CallConv::Native))
     }
 
diff --git a/lib/cretonne/src/ir/instructions.rs b/lib/cretonne/src/ir/instructions.rs
index 6c101d751e..0038fa42c4 100644
--- a/lib/cretonne/src/ir/instructions.rs
+++ b/lib/cretonne/src/ir/instructions.rs
@@ -262,7 +262,7 @@ pub struct VariableArgs(Vec<Value>);
 
 impl VariableArgs {
     /// Create an empty argument list.
-    pub fn new() -> VariableArgs {
+    pub fn new() -> Self {
         VariableArgs(Vec::new())
     }
 
@@ -314,8 +314,8 @@ impl Display for VariableArgs {
 }
 
 impl Default for VariableArgs {
-    fn default() -> VariableArgs {
-        VariableArgs::new()
+    fn default() -> Self {
+        Self::new()
     }
 }
 
diff --git a/lib/cretonne/src/ir/jumptable.rs b/lib/cretonne/src/ir/jumptable.rs
index a6cfad3346..2d09aab4da 100644
--- a/lib/cretonne/src/ir/jumptable.rs
+++ b/lib/cretonne/src/ir/jumptable.rs
@@ -24,16 +24,16 @@ pub struct JumpTableData {
 
 impl JumpTableData {
     /// Create a new empty jump table.
-    pub fn new() -> JumpTableData {
-        JumpTableData {
+    pub fn new() -> Self {
+        Self {
             table: Vec::new(),
             holes: 0,
         }
     }
 
     /// Create a new empty jump table with the specified capacity.
-    pub fn with_capacity(capacity: usize) -> JumpTableData {
-        JumpTableData {
+    pub fn with_capacity(capacity: usize) -> Self {
+        Self {
             table: Vec::with_capacity(capacity),
             holes: 0,
         }
diff --git a/lib/cretonne/src/ir/layout.rs b/lib/cretonne/src/ir/layout.rs
index 8bb61cb11f..551055394a 100644
--- a/lib/cretonne/src/ir/layout.rs
+++ b/lib/cretonne/src/ir/layout.rs
@@ -42,8 +42,8 @@ pub struct Layout {
 
 impl Layout {
     /// Create a new empty `Layout`.
-    pub fn new() -> Layout {
-        Layout {
+    pub fn new() -> Self {
+        Self {
             ebbs: EntityMap::new(),
             insts: EntityMap::new(),
             first_ebb: None,
diff --git a/lib/cretonne/src/ir/memflags.rs b/lib/cretonne/src/ir/memflags.rs
index fd836d2752..e87fb3c4ec 100644
--- a/lib/cretonne/src/ir/memflags.rs
+++ b/lib/cretonne/src/ir/memflags.rs
@@ -21,8 +21,8 @@ pub struct MemFlags {
 
 impl MemFlags {
     /// Create a new empty set of flags.
-    pub fn new() -> MemFlags {
-        MemFlags { bits: 0 }
+    pub fn new() -> Self {
+        Self { bits: 0 }
     }
 
     /// Read a flag bit.
diff --git a/lib/cretonne/src/ir/sourceloc.rs b/lib/cretonne/src/ir/sourceloc.rs
index 104bc541b6..ffcf0db943 100644
--- a/lib/cretonne/src/ir/sourceloc.rs
+++ b/lib/cretonne/src/ir/sourceloc.rs
@@ -33,7 +33,7 @@ impl SourceLoc {
 }
 
 impl Default for SourceLoc {
-    fn default() -> SourceLoc {
+    fn default() -> Self {
         SourceLoc(!0)
     }
 }
diff --git a/lib/cretonne/src/ir/stackslot.rs b/lib/cretonne/src/ir/stackslot.rs
index f46f91dd74..dc02f0df6b 100644
--- a/lib/cretonne/src/ir/stackslot.rs
+++ b/lib/cretonne/src/ir/stackslot.rs
@@ -172,8 +172,8 @@ pub struct StackSlots {
 /// Stack slot manager functions that behave mostly like an entity map.
 impl StackSlots {
     /// Create an empty stack slot manager.
-    pub fn new() -> StackSlots {
-        StackSlots {
+    pub fn new() -> Self {
+        Self {
             slots: PrimaryMap::new(),
             outgoing: Vec::new(),
             emergency: Vec::new(),
diff --git a/lib/cretonne/src/ir/types.rs b/lib/cretonne/src/ir/types.rs
index e0cdcd02ce..da502f9bf7 100644
--- a/lib/cretonne/src/ir/types.rs
+++ b/lib/cretonne/src/ir/types.rs
@@ -321,7 +321,7 @@ impl Debug for Type {
 }
 
 impl Default for Type {
-    fn default() -> Type {
+    fn default() -> Self {
         VOID
     }
 }
diff --git a/lib/cretonne/src/isa/registers.rs b/lib/cretonne/src/isa/registers.rs
index f21c946b99..55ec2bb8a8 100644
--- a/lib/cretonne/src/isa/registers.rs
+++ b/lib/cretonne/src/isa/registers.rs
@@ -214,7 +214,7 @@ impl fmt::Debug for RegClassData {
 
 /// Within an ISA, register classes are uniquely identified by their index.
 impl PartialEq for RegClassData {
-    fn eq(&self, other: &RegClassData) -> bool {
+    fn eq(&self, other: &Self) -> bool {
         self.index == other.index
     }
 }
diff --git a/lib/cretonne/src/loop_analysis.rs b/lib/cretonne/src/loop_analysis.rs
index c994ff3027..e6390aa100 100644
--- a/lib/cretonne/src/loop_analysis.rs
+++ b/lib/cretonne/src/loop_analysis.rs
@@ -42,8 +42,8 @@ impl LoopData {
 impl LoopAnalysis {
     /// Allocate a new blank loop analysis struct. Use `compute` to compute the loop analysis for
     /// a function.
-    pub fn new() -> LoopAnalysis {
-        LoopAnalysis {
+    pub fn new() -> Self {
+        Self {
             valid: false,
             loops: PrimaryMap::new(),
             ebb_loop_map: EntityMap::new(),
diff --git a/lib/cretonne/src/regalloc/allocatable_set.rs b/lib/cretonne/src/regalloc/allocatable_set.rs
index 355443affc..0e8e559cca 100644
--- a/lib/cretonne/src/regalloc/allocatable_set.rs
+++ b/lib/cretonne/src/regalloc/allocatable_set.rs
@@ -37,8 +37,8 @@ impl AllocatableSet {
     ///
     /// Note that this includes *all* registers. Query the `TargetIsa` object to get a set of
     /// allocatable registers where reserved registers have been filtered out.
-    pub fn new() -> AllocatableSet {
-        AllocatableSet { avail: [!0; 3] }
+    pub fn new() -> Self {
+        Self { avail: [!0; 3] }
     }
 
     /// Returns `true` if the specified register is available.
diff --git a/lib/cretonne/src/regalloc/coalescing.rs b/lib/cretonne/src/regalloc/coalescing.rs
index 28cde8c10c..cd54f2ece2 100644
--- a/lib/cretonne/src/regalloc/coalescing.rs
+++ b/lib/cretonne/src/regalloc/coalescing.rs
@@ -74,8 +74,8 @@ impl Node {
 
 impl DomForest {
     /// Create a new empty dominator forest.
-    pub fn new() -> DomForest {
-        DomForest {
+    pub fn new() -> Self {
+        Self {
             values: Vec::new(),
             stack: Vec::new(),
         }
@@ -252,8 +252,8 @@ struct Context<'a> {
 
 impl Coalescing {
     /// Create a new coalescing pass.
-    pub fn new() -> Coalescing {
-        Coalescing {
+    pub fn new() -> Self {
+        Self {
             forest: DomForest::new(),
             values: Vec::new(),
             split_values: Vec::new(),
diff --git a/lib/cretonne/src/regalloc/coloring.rs b/lib/cretonne/src/regalloc/coloring.rs
index d8607e4bd1..ff5bc0ef69 100644
--- a/lib/cretonne/src/regalloc/coloring.rs
+++ b/lib/cretonne/src/regalloc/coloring.rs
@@ -101,8 +101,8 @@ struct Context<'a> {
 
 impl Coloring {
     /// Allocate scratch space data structures for the coloring pass.
-    pub fn new() -> Coloring {
-        Coloring {
+    pub fn new() -> Self {
+        Self {
             divert: RegDiversions::new(),
             solver: Solver::new(),
         }
diff --git a/lib/cretonne/src/regalloc/context.rs b/lib/cretonne/src/regalloc/context.rs
index 06d27ff325..a35ddb3484 100644
--- a/lib/cretonne/src/regalloc/context.rs
+++ b/lib/cretonne/src/regalloc/context.rs
@@ -36,8 +36,8 @@ impl Context {
     ///
     /// This context should be reused for multiple functions in order to avoid repeated memory
     /// allocations.
-    pub fn new() -> Context {
-        Context {
+    pub fn new() -> Self {
+        Self {
             liveness: Liveness::new(),
             virtregs: VirtRegs::new(),
             coalescing: Coalescing::new(),
diff --git a/lib/cretonne/src/regalloc/diversion.rs b/lib/cretonne/src/regalloc/diversion.rs
index c6d25f543e..588ad040a5 100644
--- a/lib/cretonne/src/regalloc/diversion.rs
+++ b/lib/cretonne/src/regalloc/diversion.rs
@@ -44,8 +44,8 @@ pub struct RegDiversions {
 
 impl RegDiversions {
     /// Create a new empty diversion tracker.
-    pub fn new() -> RegDiversions {
-        RegDiversions { current: Vec::new() }
+    pub fn new() -> Self {
+        Self { current: Vec::new() }
     }
 
     /// Clear the tracker, preparing for a new EBB.
diff --git a/lib/cretonne/src/regalloc/live_value_tracker.rs b/lib/cretonne/src/regalloc/live_value_tracker.rs
index 10fe9ff595..cb57683661 100644
--- a/lib/cretonne/src/regalloc/live_value_tracker.rs
+++ b/lib/cretonne/src/regalloc/live_value_tracker.rs
@@ -65,8 +65,8 @@ struct LiveValueVec {
 }
 
 impl LiveValueVec {
-    fn new() -> LiveValueVec {
-        LiveValueVec {
+    fn new() -> Self {
+        Self {
             values: Vec::new(),
             live_prefix: None,
         }
@@ -124,8 +124,8 @@ impl LiveValueVec {
 
 impl LiveValueTracker {
     /// Create a new blank tracker.
-    pub fn new() -> LiveValueTracker {
-        LiveValueTracker {
+    pub fn new() -> Self {
+        Self {
             live: LiveValueVec::new(),
             idom_sets: HashMap::new(),
             idom_pool: ListPool::new(),
diff --git a/lib/cretonne/src/regalloc/liveness.rs b/lib/cretonne/src/regalloc/liveness.rs
index 0a449bd85c..e5face5ef4 100644
--- a/lib/cretonne/src/regalloc/liveness.rs
+++ b/lib/cretonne/src/regalloc/liveness.rs
@@ -299,8 +299,8 @@ impl Liveness {
     ///
     /// The memory allocated for this analysis can be reused for multiple functions. Use the
     /// `compute` method to actually runs the analysis for a function.
-    pub fn new() -> Liveness {
-        Liveness {
+    pub fn new() -> Self {
+        Self {
             ranges: LiveRangeSet::new(),
             worklist: Vec::new(),
             ebb_params: Vec::new(),
diff --git a/lib/cretonne/src/regalloc/reload.rs b/lib/cretonne/src/regalloc/reload.rs
index 97b849f3a9..9b0006b990 100644
--- a/lib/cretonne/src/regalloc/reload.rs
+++ b/lib/cretonne/src/regalloc/reload.rs
@@ -46,8 +46,8 @@ struct Context<'a> {
 
 impl Reload {
     /// Create a new blank reload pass.
-    pub fn new() -> Reload {
-        Reload {
+    pub fn new() -> Self {
+        Self {
             candidates: Vec::new(),
             reloads: SparseMap::new(),
         }
diff --git a/lib/cretonne/src/regalloc/solver.rs b/lib/cretonne/src/regalloc/solver.rs
index 69b7bd1dd3..a18599a127 100644
--- a/lib/cretonne/src/regalloc/solver.rs
+++ b/lib/cretonne/src/regalloc/solver.rs
@@ -502,8 +502,8 @@ pub struct Solver {
 /// Interface for programming the constraints into the solver.
 impl Solver {
     /// Create a new empty solver.
-    pub fn new() -> Solver {
-        Solver {
+    pub fn new() -> Self {
+        Self {
             assignments: SparseMap::new(),
             vars: Vec::new(),
             inputs_done: false,
diff --git a/lib/cretonne/src/regalloc/spilling.rs b/lib/cretonne/src/regalloc/spilling.rs
index 85d7b20b4a..65d2f2d076 100644
--- a/lib/cretonne/src/regalloc/spilling.rs
+++ b/lib/cretonne/src/regalloc/spilling.rs
@@ -63,8 +63,8 @@ struct Context<'a> {
 
 impl Spilling {
     /// Create a new spilling data structure.
-    pub fn new() -> Spilling {
-        Spilling {
+    pub fn new() -> Self {
+        Self {
             spills: Vec::new(),
             reg_uses: Vec::new(),
         }
diff --git a/lib/cretonne/src/regalloc/virtregs.rs b/lib/cretonne/src/regalloc/virtregs.rs
index 21a2a917d5..c2cb6c8ffe 100644
--- a/lib/cretonne/src/regalloc/virtregs.rs
+++ b/lib/cretonne/src/regalloc/virtregs.rs
@@ -45,8 +45,8 @@ pub struct VirtRegs {
 #[allow(dead_code)]
 impl VirtRegs {
     /// Create a new virtual register collection.
-    pub fn new() -> VirtRegs {
-        VirtRegs {
+    pub fn new() -> Self {
+        Self {
             pool: ListPool::new(),
             vregs: PrimaryMap::new(),
             value_vregs: EntityMap::new(),
diff --git a/lib/cretonne/src/topo_order.rs b/lib/cretonne/src/topo_order.rs
index db566ae7c8..d71dc63ccf 100644
--- a/lib/cretonne/src/topo_order.rs
+++ b/lib/cretonne/src/topo_order.rs
@@ -26,8 +26,8 @@ pub struct TopoOrder {
 
 impl TopoOrder {
     /// Create a new empty topological order.
-    pub fn new() -> TopoOrder {
-        TopoOrder {
+    pub fn new() -> Self {
+        Self {
             preferred: Vec::new(),
             next: 0,
             visited: SparseSet::new(),
diff --git a/lib/filecheck/src/checker.rs b/lib/filecheck/src/checker.rs
index bad8e4774e..b3a68fba4c 100644
--- a/lib/filecheck/src/checker.rs
+++ b/lib/filecheck/src/checker.rs
@@ -95,8 +95,8 @@ pub struct CheckerBuilder {
 
 impl CheckerBuilder {
     /// Create a new, blank `CheckerBuilder`.
-    pub fn new() -> CheckerBuilder {
-        CheckerBuilder {
+    pub fn new() -> Self {
+        Self {
             directives: Vec::new(),
             linerx: Regex::new(DIRECTIVE_RX).unwrap(),
         }
@@ -146,8 +146,8 @@ pub struct Checker {
 }
 
 impl Checker {
-    fn new(directives: Vec<Directive>) -> Checker {
-        Checker { directives: directives }
+    fn new(directives: Vec<Directive>) -> Self {
+        Self { directives: directives }
     }
 
     /// An empty checker contains no directives, and will match any input string.
diff --git a/lib/filecheck/src/pattern.rs b/lib/filecheck/src/pattern.rs
index 7969bc00ec..934150dca7 100644
--- a/lib/filecheck/src/pattern.rs
+++ b/lib/filecheck/src/pattern.rs
@@ -54,8 +54,8 @@ impl Part {
 
 impl Pattern {
     /// Create a new blank pattern. Use the `FromStr` trait to generate Patterns with content.
-    fn new() -> Pattern {
-        Pattern {
+    fn new() -> Self {
+        Self {
             parts: Vec::new(),
             defs: Vec::new(),
         }
diff --git a/lib/wasm/src/func_translator.rs b/lib/wasm/src/func_translator.rs
index fd784a4491..57821c49c5 100644
--- a/lib/wasm/src/func_translator.rs
+++ b/lib/wasm/src/func_translator.rs
@@ -30,8 +30,8 @@ pub struct FuncTranslator {
 
 impl FuncTranslator {
     /// Create a new translator.
-    pub fn new() -> FuncTranslator {
-        FuncTranslator {
+    pub fn new() -> Self {
+        Self {
             il_builder: ILBuilder::new(),
             state: TranslationState::new(),
         }
diff --git a/lib/wasm/src/state.rs b/lib/wasm/src/state.rs
index 91737a370c..f9f76d2934 100644
--- a/lib/wasm/src/state.rs
+++ b/lib/wasm/src/state.rs
@@ -126,8 +126,8 @@ pub struct TranslationState {
 }
 
 impl TranslationState {
-    pub fn new() -> TranslationState {
-        TranslationState {
+    pub fn new() -> Self {
+        Self {
             stack: Vec::new(),
             control_stack: Vec::new(),
             phantom_unreachable_stack_depth: 0,