Rollup merge of rust-lang#136191 - klensy:const_a, r=compiler-errors

compiler: replace few consts arrays with statics to remove const dupes

Locally on `x86_64-pc-windows-msvc` -100kb for `rustc_driver.dll`

Author: matthiaskrgr

compiler/rustc_feature/src/accepted.rs

@@ -9,7 +9,7 @@ macro_rules! declare_features {
         $(#[doc = $doc:tt])* (accepted, $feature:ident, $ver:expr, $issue:expr),
     )+) => {
         /// Formerly unstable features that have now been accepted (stabilized).
-        pub const ACCEPTED_LANG_FEATURES: &[Feature] = &[
+        pub static ACCEPTED_LANG_FEATURES: &[Feature] = &[
             $(Feature {
                 name: sym::$feature,
                 since: $ver,

compiler/rustc_feature/src/builtin_attrs.rs

@@ -318,7 +318,7 @@ pub struct BuiltinAttribute {
 
 /// Attributes that have a special meaning to rustc or rustdoc.
 #[rustfmt::skip]
-pub const BUILTIN_ATTRIBUTES: &[BuiltinAttribute] = &[
+pub static BUILTIN_ATTRIBUTES: &[BuiltinAttribute] = &[
     // ==========================================================================
     // Stable attributes:
     // ==========================================================================

compiler/rustc_feature/src/removed.rs

@@ -14,7 +14,7 @@ macro_rules! declare_features {
         $(#[doc = $doc:tt])* (removed, $feature:ident, $ver:expr, $issue:expr, $reason:expr),
     )+) => {
         /// Formerly unstable features that have now been removed.
-        pub const REMOVED_LANG_FEATURES: &[RemovedFeature] = &[
+        pub static REMOVED_LANG_FEATURES: &[RemovedFeature] = &[
             $(RemovedFeature {
                 feature: Feature {
                     name: sym::$feature,

compiler/rustc_feature/src/unstable.rs

@@ -104,7 +104,7 @@ macro_rules! declare_features {
     )+) => {
         /// Unstable language features that are being implemented or being
         /// considered for acceptance (stabilization) or removal.
-        pub const UNSTABLE_LANG_FEATURES: &[Feature] = &[
+        pub static UNSTABLE_LANG_FEATURES: &[Feature] = &[
             $(Feature {
                 name: sym::$feature,
                 since: $ver,

compiler/rustc_parse/src/lexer/unicode_chars.rs

@@ -8,7 +8,7 @@ use crate::errors::TokenSubstitution;
 use crate::token::{self, Delimiter};
 
 #[rustfmt::skip] // for line breaks
-pub(super) const UNICODE_ARRAY: &[(char, &str, &str)] = &[
+pub(super) static UNICODE_ARRAY: &[(char, &str, &str)] = &[
     ('
', "Line Separator", " "),
     ('
', "Paragraph Separator", " "),
     (' ', "Ogham Space mark", " "),

compiler/rustc_target/src/spec/mod.rs

@@ -1651,7 +1651,7 @@ macro_rules! supported_targets {
         }
 
         /// List of supported targets
-        pub const TARGETS: &[&str] = &[$($tuple),+];
+        pub static TARGETS: &[&str] = &[$($tuple),+];
 
         fn load_builtin(target: &str) -> Option<Target> {
             let t = match target {

compiler/rustc_target/src/target_features.rs

@@ -131,7 +131,7 @@ impl Stability {
 // Both of these are also applied transitively.
 type ImpliedFeatures = &'static [&'static str];
 
-const ARM_FEATURES: &[(&str, Stability, ImpliedFeatures)] = &[
+static ARM_FEATURES: &[(&str, Stability, ImpliedFeatures)] = &[
     // tidy-alphabetical-start
     ("aclass", Unstable(sym::arm_target_feature), &[]),
     ("aes", Unstable(sym::arm_target_feature), &["neon"]),
@@ -175,7 +175,7 @@ const ARM_FEATURES: &[(&str, Stability, ImpliedFeatures)] = &[
     // tidy-alphabetical-end
 ];
 
-const AARCH64_FEATURES: &[(&str, Stability, ImpliedFeatures)] = &[
+static AARCH64_FEATURES: &[(&str, Stability, ImpliedFeatures)] = &[
     // tidy-alphabetical-start
     // FEAT_AES & FEAT_PMULL
     ("aes", Stable, &["neon"]),
@@ -371,7 +371,7 @@ const AARCH64_TIED_FEATURES: &[&[&str]] = &[
     &["paca", "pacg"], // Together these represent `pauth` in LLVM
 ];
 
-const X86_FEATURES: &[(&str, Stability, ImpliedFeatures)] = &[
+static X86_FEATURES: &[(&str, Stability, ImpliedFeatures)] = &[
     // tidy-alphabetical-start
     ("adx", Stable, &[]),
     ("aes", Stable, &["sse2"]),
@@ -453,7 +453,7 @@ const HEXAGON_FEATURES: &[(&str, Stability, ImpliedFeatures)] = &[
     // tidy-alphabetical-end
 ];
 
-const POWERPC_FEATURES: &[(&str, Stability, ImpliedFeatures)] = &[
+static POWERPC_FEATURES: &[(&str, Stability, ImpliedFeatures)] = &[
     // tidy-alphabetical-start
     ("altivec", Unstable(sym::powerpc_target_feature), &[]),
     ("partword-atomics", Unstable(sym::powerpc_target_feature), &[]),
@@ -476,7 +476,7 @@ const MIPS_FEATURES: &[(&str, Stability, ImpliedFeatures)] = &[
     // tidy-alphabetical-end
 ];
 
-const RISCV_FEATURES: &[(&str, Stability, ImpliedFeatures)] = &[
+static RISCV_FEATURES: &[(&str, Stability, ImpliedFeatures)] = &[
     // tidy-alphabetical-start
     ("a", Stable, &["zaamo", "zalrsc"]),
     ("c", Stable, &[]),
@@ -521,7 +521,7 @@ const RISCV_FEATURES: &[(&str, Stability, ImpliedFeatures)] = &[
     // tidy-alphabetical-end
 ];
 
-const WASM_FEATURES: &[(&str, Stability, ImpliedFeatures)] = &[
+static WASM_FEATURES: &[(&str, Stability, ImpliedFeatures)] = &[
     // tidy-alphabetical-start
     ("atomics", Unstable(sym::wasm_target_feature), &[]),
     ("bulk-memory", Stable, &[]),
@@ -542,7 +542,7 @@ const WASM_FEATURES: &[(&str, Stability, ImpliedFeatures)] = &[
 const BPF_FEATURES: &[(&str, Stability, ImpliedFeatures)] =
     &[("alu32", Unstable(sym::bpf_target_feature), &[])];
 
-const CSKY_FEATURES: &[(&str, Stability, ImpliedFeatures)] = &[
+static CSKY_FEATURES: &[(&str, Stability, ImpliedFeatures)] = &[
     // tidy-alphabetical-start
     ("10e60", Unstable(sym::csky_target_feature), &["7e10"]),
     ("2e3", Unstable(sym::csky_target_feature), &["e2"]),
@@ -589,7 +589,7 @@ const CSKY_FEATURES: &[(&str, Stability, ImpliedFeatures)] = &[
     // tidy-alphabetical-end
 ];
 
-const LOONGARCH_FEATURES: &[(&str, Stability, ImpliedFeatures)] = &[
+static LOONGARCH_FEATURES: &[(&str, Stability, ImpliedFeatures)] = &[
     // tidy-alphabetical-start
     ("d", Unstable(sym::loongarch_target_feature), &["f"]),
     ("f", Unstable(sym::loongarch_target_feature), &[]),
@@ -618,7 +618,7 @@ const SPARC_FEATURES: &[(&str, Stability, ImpliedFeatures)] = &[
     // tidy-alphabetical-end
 ];
 
-const M68K_FEATURES: &[(&str, Stability, ImpliedFeatures)] = &[
+static M68K_FEATURES: &[(&str, Stability, ImpliedFeatures)] = &[
     // tidy-alphabetical-start
     ("isa-68000", Unstable(sym::m68k_target_feature), &[]),
     ("isa-68010", Unstable(sym::m68k_target_feature), &["isa-68000"]),