use is_uninhabited in more places

src/librustc/ty/layout.rs

@@ -449,7 +449,7 @@ impl<'a, 'tcx> LayoutCx<'tcx, TyCtxt<'a, 'tcx, 'tcx>> {
                 }
             }
 
-            if sized && fields.iter().any(|f| f.abi == Abi::Uninhabited) {
+            if sized && fields.iter().any(|f| f.abi.is_uninhabited()) {
                 abi = Abi::Uninhabited;
             }
 
@@ -724,7 +724,7 @@ impl<'a, 'tcx> LayoutCx<'tcx, TyCtxt<'a, 'tcx, 'tcx>> {
                 // See issue #49298 for more details on the need to leave space
                 // for non-ZST uninhabited data (mostly partial initialization).
                 let absent = |fields: &[TyLayout<'_>]| {
-                    let uninhabited = fields.iter().any(|f| f.abi == Abi::Uninhabited);
+                    let uninhabited = fields.iter().any(|f| f.abi.is_uninhabited());
                     let is_zst = fields.iter().all(|f| f.is_zst());
                     uninhabited && is_zst
                 };
@@ -872,7 +872,7 @@ impl<'a, 'tcx> LayoutCx<'tcx, TyCtxt<'a, 'tcx, 'tcx>> {
                                 _ => Abi::Aggregate { sized: true },
                             };
 
-                            if st.iter().all(|v| v.abi == Abi::Uninhabited) {
+                            if st.iter().all(|v| v.abi.is_uninhabited()) {
                                 abi = Abi::Uninhabited;
                             }
 
@@ -900,7 +900,7 @@ impl<'a, 'tcx> LayoutCx<'tcx, TyCtxt<'a, 'tcx, 'tcx>> {
                 let discr_type = def.repr.discr_type();
                 let bits = Integer::from_attr(tcx, discr_type).size().bits();
                 for (i, discr) in def.discriminants(tcx).enumerate() {
-                    if variants[i].iter().any(|f| f.abi == Abi::Uninhabited) {
+                    if variants[i].iter().any(|f| f.abi.is_uninhabited()) {
                         continue;
                     }
                     let mut x = discr.val as i128;
@@ -1096,7 +1096,7 @@ impl<'a, 'tcx> LayoutCx<'tcx, TyCtxt<'a, 'tcx, 'tcx>> {
                     }
                 }
 
-                if layout_variants.iter().all(|v| v.abi == Abi::Uninhabited) {
+                if layout_variants.iter().all(|v| v.abi.is_uninhabited()) {
                     abi = Abi::Uninhabited;
                 }
 

src/librustc_codegen_llvm/debuginfo/mod.rs

@@ -279,7 +279,7 @@ pub fn create_function_debug_context(
         }
         None => {}
     };
-    if cx.layout_of(sig.output()).abi == ty::layout::Abi::Uninhabited {
+    if cx.layout_of(sig.output()).abi.is_uninhabited() {
         flags = flags | DIFlags::FlagNoReturn;
     }
 

src/librustc_codegen_llvm/declare.rs

@@ -23,7 +23,7 @@
 use llvm;
 use llvm::AttributePlace::Function;
 use rustc::ty::{self, Ty};
-use rustc::ty::layout::{self, LayoutOf};
+use rustc::ty::layout::LayoutOf;
 use rustc::session::config::Sanitizer;
 use rustc_data_structures::small_c_str::SmallCStr;
 use rustc_target::spec::PanicStrategy;
@@ -137,7 +137,7 @@ pub fn declare_fn(
     let fty = FnType::new(cx, sig, &[]);
     let llfn = declare_raw_fn(cx, name, fty.llvm_cconv(), fty.llvm_type(cx));
 
-    if cx.layout_of(sig.output()).abi == layout::Abi::Uninhabited {
+    if cx.layout_of(sig.output()).abi.is_uninhabited() {
         llvm::Attribute::NoReturn.apply_llfn(Function, llfn);
     }
 

src/librustc_codegen_llvm/mir/place.rs

@@ -275,7 +275,7 @@ impl PlaceRef<'ll, 'tcx> {
     /// Obtain the actual discriminant of a value.
     pub fn codegen_get_discr(self, bx: &Builder<'a, 'll, 'tcx>, cast_to: Ty<'tcx>) -> &'ll Value {
         let cast_to = bx.cx.layout_of(cast_to).immediate_llvm_type(bx.cx);
-        if self.layout.abi == layout::Abi::Uninhabited {
+        if self.layout.abi.is_uninhabited() {
             return C_undef(cast_to);
         }
         match self.layout.variants {
@@ -338,7 +338,7 @@ impl PlaceRef<'ll, 'tcx> {
     /// Set the discriminant for a new value of the given case of the given
     /// representation.
     pub fn codegen_set_discr(&self, bx: &Builder<'a, 'll, 'tcx>, variant_index: usize) {
-        if self.layout.for_variant(bx.cx, variant_index).abi == layout::Abi::Uninhabited {
+        if self.layout.for_variant(bx.cx, variant_index).abi.is_uninhabited() {
             return;
         }
         match self.layout.variants {

src/librustc_codegen_llvm/mir/rvalue.rs

@@ -290,7 +290,7 @@ impl FunctionCx<'a, 'll, 'tcx> {
                     mir::CastKind::Misc => {
                         assert!(cast.is_llvm_immediate());
                         let ll_t_out = cast.immediate_llvm_type(bx.cx);
-                        if operand.layout.abi == layout::Abi::Uninhabited {
+                        if operand.layout.abi.is_uninhabited() {
                             return (bx, OperandRef {
                                 val: OperandValue::Immediate(C_undef(ll_t_out)),
                                 layout: cast,

src/librustc_mir/interpret/operand.rs

@@ -514,7 +514,7 @@ impl<'a, 'mir, 'tcx, M: Machine<'a, 'mir, 'tcx>> EvalContext<'a, 'mir, 'tcx, M>
         rval: OpTy<'tcx>,
     ) -> EvalResult<'tcx, (u128, usize)> {
         trace!("read_discriminant_value {:#?}", rval.layout);
-        if rval.layout.abi == layout::Abi::Uninhabited {
+        if rval.layout.abi.is_uninhabited() {
             return err!(Unreachable);
         }