Make `abi::Abi` `Copy` and remove a *lot* of refs

fix

fix

Remove more refs and clones

fix

more

fix

4 files changed, 14 insertions, 14 deletions

diff --git a/compiler/rustc_codegen_ssa/src/mir/block.rs b/compiler/rustc_codegen_ssa/src/mir/block.rs
index 93dc9850fc7..cd0e9354c24 100644
--- a/compiler/rustc_codegen_ssa/src/mir/block.rs
+++ b/compiler/rustc_codegen_ssa/src/mir/block.rs
@@ -1102,9 +1102,9 @@ impl<'a, 'tcx, Bx: BuilderMethods<'a, 'tcx>> FunctionCx<'a, 'tcx, Bx> {
                 // the load would just produce `OperandValue::Ref` instead
                 // of the `OperandValue::Immediate` we need for the call.
                 llval = bx.load(bx.backend_type(arg.layout), llval, align);
-                if let abi::Abi::Scalar(ref scalar) = arg.layout.abi {
+                if let abi::Abi::Scalar(scalar) = arg.layout.abi {
                     if scalar.is_bool() {
-                        bx.range_metadata(llval, &WrappingRange { start: 0, end: 1 });
+                        bx.range_metadata(llval, WrappingRange { start: 0, end: 1 });
                     }
                 }
                 // We store bools as `i8` so we need to truncate to `i1`.
@@ -1424,7 +1424,7 @@ impl<'a, 'tcx, Bx: BuilderMethods<'a, 'tcx>> FunctionCx<'a, 'tcx, Bx> {
         let src = self.codegen_operand(bx, src);
 
         // Special-case transmutes between scalars as simple bitcasts.
-        match (&src.layout.abi, &dst.layout.abi) {
+        match (src.layout.abi, dst.layout.abi) {
             (abi::Abi::Scalar(src_scalar), abi::Abi::Scalar(dst_scalar)) => {
                 // HACK(eddyb) LLVM doesn't like `bitcast`s between pointers and non-pointers.
                 if (src_scalar.value == abi::Pointer) == (dst_scalar.value == abi::Pointer) {
diff --git a/compiler/rustc_codegen_ssa/src/mir/constant.rs b/compiler/rustc_codegen_ssa/src/mir/constant.rs
index fa8a53e60b1..93b39dc8e9e 100644
--- a/compiler/rustc_codegen_ssa/src/mir/constant.rs
+++ b/compiler/rustc_codegen_ssa/src/mir/constant.rs
@@ -68,7 +68,7 @@ impl<'a, 'tcx, Bx: BuilderMethods<'a, 'tcx>> FunctionCx<'a, 'tcx, Bx> {
                         if let Some(prim) = field.val.try_to_scalar() {
                             let layout = bx.layout_of(field_ty);
                             let scalar = match layout.abi {
-                                Abi::Scalar(ref x) => x,
+                                Abi::Scalar(x) => x,
                                 _ => bug!("from_const: invalid ByVal layout: {:#?}", layout),
                             };
                             bx.scalar_to_backend(prim, scalar, bx.immediate_backend_type(layout))
diff --git a/compiler/rustc_codegen_ssa/src/mir/operand.rs b/compiler/rustc_codegen_ssa/src/mir/operand.rs
index 5cee25b5cca..ce6cec67ad4 100644
--- a/compiler/rustc_codegen_ssa/src/mir/operand.rs
+++ b/compiler/rustc_codegen_ssa/src/mir/operand.rs
@@ -79,7 +79,7 @@ impl<'a, 'tcx, V: CodegenObject> OperandRef<'tcx, V> {
         let val = match val {
             ConstValue::Scalar(x) => {
                 let scalar = match layout.abi {
-                    Abi::Scalar(ref x) => x,
+                    Abi::Scalar(x) => x,
                     _ => bug!("from_const: invalid ByVal layout: {:#?}", layout),
                 };
                 let llval = bx.scalar_to_backend(x, scalar, bx.immediate_backend_type(layout));
@@ -87,7 +87,7 @@ impl<'a, 'tcx, V: CodegenObject> OperandRef<'tcx, V> {
             }
             ConstValue::Slice { data, start, end } => {
                 let a_scalar = match layout.abi {
-                    Abi::ScalarPair(ref a, _) => a,
+                    Abi::ScalarPair(a, _) => a,
                     _ => bug!("from_const: invalid ScalarPair layout: {:#?}", layout),
                 };
                 let a = Scalar::from_pointer(
@@ -162,7 +162,7 @@ impl<'a, 'tcx, V: CodegenObject> OperandRef<'tcx, V> {
         llval: V,
         layout: TyAndLayout<'tcx>,
     ) -> Self {
-        let val = if let Abi::ScalarPair(ref a, ref b) = layout.abi {
+        let val = if let Abi::ScalarPair(a, b) = layout.abi {
             debug!("Operand::from_immediate_or_packed_pair: unpacking {:?} @ {:?}", llval, layout);
 
             // Deconstruct the immediate aggregate.
@@ -185,7 +185,7 @@ impl<'a, 'tcx, V: CodegenObject> OperandRef<'tcx, V> {
         let field = self.layout.field(bx.cx(), i);
         let offset = self.layout.fields.offset(i);
 
-        let mut val = match (self.val, &self.layout.abi) {
+        let mut val = match (self.val, self.layout.abi) {
             // If the field is ZST, it has no data.
             _ if field.is_zst() => {
                 return OperandRef::new_zst(bx, field);
@@ -200,7 +200,7 @@ impl<'a, 'tcx, V: CodegenObject> OperandRef<'tcx, V> {
             }
 
             // Extract a scalar component from a pair.
-            (OperandValue::Pair(a_llval, b_llval), &Abi::ScalarPair(ref a, ref b)) => {
+            (OperandValue::Pair(a_llval, b_llval), Abi::ScalarPair(a, b)) => {
                 if offset.bytes() == 0 {
                     assert_eq!(field.size, a.value.size(bx.cx()));
                     OperandValue::Immediate(a_llval)
@@ -212,14 +212,14 @@ impl<'a, 'tcx, V: CodegenObject> OperandRef<'tcx, V> {
             }
 
             // `#[repr(simd)]` types are also immediate.
-            (OperandValue::Immediate(llval), &Abi::Vector { .. }) => {
+            (OperandValue::Immediate(llval), Abi::Vector { .. }) => {
                 OperandValue::Immediate(bx.extract_element(llval, bx.cx().const_usize(i as u64)))
             }
 
             _ => bug!("OperandRef::extract_field({:?}): not applicable", self),
         };
 
-        match (&mut val, &field.abi) {
+        match (&mut val, field.abi) {
             (OperandValue::Immediate(llval), _) => {
                 // Bools in union fields needs to be truncated.
                 *llval = bx.to_immediate(*llval, field);
@@ -308,7 +308,7 @@ impl<'a, 'tcx, V: CodegenObject> OperandValue<V> {
             }
             OperandValue::Pair(a, b) => {
                 let (a_scalar, b_scalar) = match dest.layout.abi {
-                    Abi::ScalarPair(ref a, ref b) => (a, b),
+                    Abi::ScalarPair(a, b) => (a, b),
                     _ => bug!("store_with_flags: invalid ScalarPair layout: {:#?}", dest.layout),
                 };
                 let ty = bx.backend_type(dest.layout);
diff --git a/compiler/rustc_codegen_ssa/src/mir/place.rs b/compiler/rustc_codegen_ssa/src/mir/place.rs
index b48d6d42b43..4b07ed1a1e6 100644
--- a/compiler/rustc_codegen_ssa/src/mir/place.rs
+++ b/compiler/rustc_codegen_ssa/src/mir/place.rs
@@ -99,7 +99,7 @@ impl<'a, 'tcx, V: CodegenObject> PlaceRef<'tcx, V> {
                     // Also handles the first field of Scalar, ScalarPair, and Vector layouts.
                     self.llval
                 }
-                Abi::ScalarPair(ref a, ref b)
+                Abi::ScalarPair(a, b)
                     if offset == a.value.size(bx.cx()).align_to(b.value.align(bx.cx()).abi) =>
                 {
                     // Offset matches second field.
@@ -222,7 +222,7 @@ impl<'a, 'tcx, V: CodegenObject> PlaceRef<'tcx, V> {
                     .map_or(index.as_u32() as u128, |discr| discr.val);
                 return bx.cx().const_uint_big(cast_to, discr_val);
             }
-            Variants::Multiple { ref tag, ref tag_encoding, tag_field, .. } => {
+            Variants::Multiple { tag, ref tag_encoding, tag_field, .. } => {
                 (tag, tag_encoding, tag_field)
             }
         };