Rollup of 8 pull requests

compiler/rustc_codegen_ssa/src/target_features.rs

@@ -187,7 +187,7 @@ const X86_ALLOWED_FEATURES: &[(&str, Option<Symbol>)] = &[
     ("bmi2", None),
     ("cmpxchg16b", Some(sym::cmpxchg16b_target_feature)),
     ("ermsb", Some(sym::ermsb_target_feature)),
-    ("f16c", Some(sym::f16c_target_feature)),
+    ("f16c", None),
     ("fma", None),
     ("fxsr", None),
     ("gfni", Some(sym::avx512_target_feature)),
@@ -396,7 +396,6 @@ pub fn from_target_feature(
                 Some(sym::cmpxchg16b_target_feature) => rust_features.cmpxchg16b_target_feature,
                 Some(sym::movbe_target_feature) => rust_features.movbe_target_feature,
                 Some(sym::rtm_target_feature) => rust_features.rtm_target_feature,
-                Some(sym::f16c_target_feature) => rust_features.f16c_target_feature,
                 Some(sym::ermsb_target_feature) => rust_features.ermsb_target_feature,
                 Some(sym::bpf_target_feature) => rust_features.bpf_target_feature,
                 Some(sym::aarch64_ver_target_feature) => rust_features.aarch64_ver_target_feature,

compiler/rustc_error_messages/locales/en-US/hir_analysis.ftl

@@ -120,3 +120,7 @@ hir_analysis_self_in_impl_self =
 
 hir_analysis_linkage_type =
     invalid type for variable with `#[linkage]` attribute
+
+hir_analysis_auto_deref_reached_recursion_limit = reached the recursion limit while auto-dereferencing `{$ty}`
+    .label = deref recursion limit reached
+    .help = consider increasing the recursion limit by adding a `#![recursion_limit = "{$suggested_limit}"]` attribute to your crate (`{$crate_name}`)

compiler/rustc_error_messages/locales/en-US/mir_build.ftl

@@ -303,3 +303,64 @@ mir_build_multiple_mut_borrows = cannot borrow value as mutable more than once a
     .mutable_borrow = another mutable borrow, by `{$name_mut}`, occurs here
     .immutable_borrow = also borrowed as immutable, by `{$name_immut}`, here
     .moved = also moved into `{$name_moved}` here
+
+mir_build_union_pattern = cannot use unions in constant patterns
+
+mir_build_type_not_structural =
+     to use a constant of type `{$non_sm_ty}` in a pattern, `{$non_sm_ty}` must be annotated with `#[derive(PartialEq, Eq)]`
+
+mir_build_unsized_pattern = cannot use unsized non-slice type `{$non_sm_ty}` in constant patterns
+
+mir_build_invalid_pattern = `{$non_sm_ty}` cannot be used in patterns
+
+mir_build_float_pattern = floating-point types cannot be used in patterns
+
+mir_build_pointer_pattern = function pointers and unsized pointers in patterns behave unpredictably and should not be relied upon. See https://github.com/rust-lang/rust/issues/70861 for details.
+
+mir_build_indirect_structural_match =
+    to use a constant of type `{$non_sm_ty}` in a pattern, `{$non_sm_ty}` must be annotated with `#[derive(PartialEq, Eq)]`
+
+mir_build_nontrivial_structural_match =
+    to use a constant of type `{$non_sm_ty}` in a pattern, the constant's initializer must be trivial or `{$non_sm_ty}` must be annotated with `#[derive(PartialEq, Eq)]`
+
+mir_build_overlapping_range_endpoints = multiple patterns overlap on their endpoints
+    .range = ... with this range
+    .note = you likely meant to write mutually exclusive ranges
+
+mir_build_non_exhaustive_omitted_pattern = some variants are not matched explicitly
+    .help = ensure that all variants are matched explicitly by adding the suggested match arms
+    .note = the matched value is of type `{$scrut_ty}` and the `non_exhaustive_omitted_patterns` attribute was found
+
+mir_build_uncovered = {$count ->
+        [1] pattern `{$witness_1}`
+        [2] patterns `{$witness_1}` and `{$witness_2}`
+        [3] patterns `{$witness_1}`, `{$witness_2}` and `{$witness_3}`
+        *[other] patterns `{$witness_1}`, `{$witness_2}`, `{$witness_3}` and {$remainder} more
+    } not covered
+
+mir_build_pattern_not_covered = refutable pattern in {$origin}
+    .pattern_ty = the matched value is of type `{$pattern_ty}`
+
+mir_build_inform_irrefutable = `let` bindings require an "irrefutable pattern", like a `struct` or an `enum` with only one variant
+
+mir_build_more_information = for more information, visit https://doc.rust-lang.org/book/ch18-02-refutability.html
+
+mir_build_res_defined_here = {$res} defined here
+
+mir_build_adt_defined_here = `{$ty}` defined here
+
+mir_build_variant_defined_here = not covered
+
+mir_build_interpreted_as_const = introduce a variable instead
+
+mir_build_confused = missing patterns are not covered because `{$variable}` is interpreted as {$article} {$res} pattern, not a new variable
+
+mir_build_suggest_if_let = you might want to use `if let` to ignore the {$count ->
+        [one] variant that isn't
+        *[other] variants that aren't
+    } matched
+
+mir_build_suggest_let_else = you might want to use `let else` to handle the {$count ->
+        [one] variant that isn't
+        *[other] variants that aren't
+    } matched

compiler/rustc_error_messages/locales/en-US/trait_selection.ftl

@@ -2,10 +2,6 @@ trait_selection_dump_vtable_entries = vtable entries for `{$trait_ref}`: {$entri
 
 trait_selection_unable_to_construct_constant_value = unable to construct a constant value for the unevaluated constant {$unevaluated}
 
-trait_selection_auto_deref_reached_recursion_limit = reached the recursion limit while auto-dereferencing `{$ty}`
-    .label = deref recursion limit reached
-    .help = consider increasing the recursion limit by adding a `#![recursion_limit = "{$suggested_limit}"]` attribute to your crate (`{$crate_name}`)
-
 trait_selection_empty_on_clause_in_rustc_on_unimplemented = empty `on`-clause in `#[rustc_on_unimplemented]`
     .label = empty on-clause here
 

compiler/rustc_feature/src/accepted.rs

@@ -161,6 +161,8 @@ declare_features! (
     (accepted, extern_crate_self, "1.34.0", Some(56409), None),
     /// Allows access to crate names passed via `--extern` through prelude.
     (accepted, extern_prelude, "1.30.0", Some(44660), None),
+    /// Allows using F16C intrinsics from `core::arch::{x86, x86_64}`.
+    (accepted, f16c_target_feature, "CURRENT_RUSTC_VERSION", Some(44839), None),
     /// Allows field shorthands (`x` meaning `x: x`) in struct literal expressions.
     (accepted, field_init_shorthand, "1.17.0", Some(37340), None),
     /// Allows `#[must_use]` on functions, and introduces must-use operators (RFC 1940).

compiler/rustc_feature/src/active.rs

@@ -254,7 +254,6 @@ declare_features! (
     (active, bpf_target_feature, "1.54.0", Some(44839), None),
     (active, cmpxchg16b_target_feature, "1.32.0", Some(44839), None),
     (active, ermsb_target_feature, "1.49.0", Some(44839), None),
-    (active, f16c_target_feature, "1.36.0", Some(44839), None),
     (active, hexagon_target_feature, "1.27.0", Some(44839), None),
     (active, mips_target_feature, "1.27.0", Some(44839), None),
     (active, movbe_target_feature, "1.34.0", Some(44839), None),