stdarch-gen-arm: remove lazy_static, use LazyLock instead

Author: folkertdev

Cargo.lock

@@ -13,7 +13,6 @@ edition = "2024"
 
 [dependencies]
 itertools = "0.14.0"
-lazy_static = "1.4.0"
 proc-macro2 = "1.0"
 quote = "1.0"
 regex = "1.5"

crates/stdarch-gen-arm/Cargo.toml

@@ -1,12 +1,12 @@
 use itertools::Itertools;
-use lazy_static::lazy_static;
 use proc_macro2::{Literal, Punct, Spacing, TokenStream};
 use quote::{ToTokens, TokenStreamExt, format_ident, quote};
 use regex::Regex;
 use serde::de::{self, MapAccess, Visitor};
 use serde::{Deserialize, Deserializer, Serialize};
 use std::fmt;
 use std::str::FromStr;
+use std::sync::LazyLock;
 
 use crate::intrinsic::Intrinsic;
 use crate::wildstring::WildStringPart;
@@ -374,10 +374,8 @@ impl FromStr for Expression {
     type Err = String;
 
     fn from_str(s: &str) -> Result<Self, Self::Err> {
-        lazy_static! {
-            static ref MACRO_RE: Regex =
-                Regex::new(r"^(?P<name>[\w\d_]+)!\((?P<ex>.*?)\);?$").unwrap();
-        }
+        static MACRO_RE: LazyLock<Regex> =
+            LazyLock::new(|| Regex::new(r"^(?P<name>[\w\d_]+)!\((?P<ex>.*?)\);?$").unwrap());
 
         if s == "SvUndef" {
             Ok(Expression::SvUndef)

crates/stdarch-gen-arm/src/expression.rs

@@ -2,6 +2,7 @@ use std::fs::File;
 use std::io::Write;
 use std::path::PathBuf;
 use std::str::FromStr;
+use std::sync::LazyLock;
 
 use crate::format_code;
 use crate::input::InputType;
@@ -10,7 +11,6 @@ use crate::typekinds::BaseType;
 use crate::typekinds::{ToRepr, TypeKind};
 
 use itertools::Itertools;
-use lazy_static::lazy_static;
 use proc_macro2::TokenStream;
 use quote::{format_ident, quote};
 
@@ -639,8 +639,8 @@ impl LdIntrCharacteristics {
     }
 }
 
-lazy_static! {
-    static ref PREAMBLE: String = format!(
+static PREAMBLE: LazyLock<String> = LazyLock::new(|| {
+    format!(
         r#"#![allow(unused)]
 
 use super::*;
@@ -801,13 +801,11 @@ fn assert_vector_matches_u64(vector: svuint64_t, expected: svuint64_t) {{
     assert!(!svptest_any(defined, cmp))
 }}
 "#
-    );
-}
+    )
+});
 
-lazy_static! {
-    static ref MANUAL_TESTS: String = format!(
-        "#[simd_test(enable = \"sve\")]
-unsafe fn test_ffr() {{
+const MANUAL_TESTS: &str = "#[simd_test(enable = \"sve\")]
+unsafe fn test_ffr() {
     svsetffr();
     let ffr = svrdffr();
     assert_vector_matches_u8(svdup_n_u8_z(ffr, 1), svindex_u8(1, 0));
@@ -816,7 +814,5 @@ unsafe fn test_ffr() {{
     svwrffr(pred);
     let ffr = svrdffr_z(svptrue_b8());
     assert_vector_matches_u8(svdup_n_u8_z(ffr, 1), svdup_n_u8_z(pred, 1));
-}}
-"
-    );
 }
+";

crates/stdarch-gen-arm/src/load_store_tests.rs

@@ -1,10 +1,10 @@
-use lazy_static::lazy_static;
 use proc_macro2::TokenStream;
 use quote::{ToTokens, TokenStreamExt, quote};
 use regex::Regex;
 use serde_with::{DeserializeFromStr, SerializeDisplay};
 use std::fmt;
 use std::str::FromStr;
+use std::sync::LazyLock;
 
 use crate::context;
 use crate::expression::{Expression, FnCall};
@@ -496,9 +496,9 @@ impl FromStr for VectorType {
     type Err = String;
 
     fn from_str(s: &str) -> Result<Self, Self::Err> {
-        lazy_static! {
-            static ref RE: Regex = Regex::new(r"^(?:(?:sv(?P<sv_ty>(?:uint|int|bool|float)(?:\d+)?))|(?:(?P<ty>(?:uint|int|bool|poly|float)(?:\d+)?)x(?P<lanes>(?:\d+)?)))(?:x(?P<tuple_size>2|3|4))?_t$").unwrap();
-        }
+        static RE: LazyLock<Regex> = LazyLock::new(|| {
+            Regex::new(r"^(?:(?:sv(?P<sv_ty>(?:uint|int|bool|float)(?:\d+)?))|(?:(?P<ty>(?:uint|int|bool|poly|float)(?:\d+)?)x(?P<lanes>(?:\d+)?)))(?:x(?P<tuple_size>2|3|4))?_t$").unwrap()
+        });
 
         if let Some(c) = RE.captures(s) {
             let (base_type, lanes) = Self::sanitise_lanes(
@@ -698,9 +698,8 @@ impl FromStr for BaseType {
     type Err = String;
 
     fn from_str(s: &str) -> Result<Self, Self::Err> {
-        lazy_static! {
-            static ref RE: Regex = Regex::new(r"^(?P<kind>[a-zA-Z]+)(?P<size>\d+)?(_t)?$").unwrap();
-        }
+        static RE: LazyLock<Regex> =
+            LazyLock::new(|| Regex::new(r"^(?P<kind>[a-zA-Z]+)(?P<size>\d+)?(_t)?$").unwrap());
 
         if let Some(c) = RE.captures(s) {
             let kind = c["kind"].parse()?;

crates/stdarch-gen-arm/src/typekinds.rs

@@ -1,8 +1,7 @@
-use lazy_static::lazy_static;
 use regex::Regex;
 use serde_with::{DeserializeFromStr, SerializeDisplay};
-use std::fmt;
 use std::str::FromStr;
+use std::{fmt, sync::LazyLock};
 
 use crate::{
     fn_suffix::SuffixKind,
@@ -66,9 +65,9 @@ impl FromStr for Wildcard {
     type Err = String;
 
     fn from_str(s: &str) -> Result<Self, Self::Err> {
-        lazy_static! {
-            static ref RE: Regex = Regex::new(r"^(?P<wildcard>\w+?)(?:_x(?P<tuple_size>[2-4]))?(?:\[(?P<index>\d+)\])?(?:\.(?P<modifiers>\w+))?(?:\s+as\s+(?P<scale_to>.*?))?$").unwrap();
-        }
+        static RE: LazyLock<Regex> = LazyLock::new(|| {
+            Regex::new(r"^(?P<wildcard>\w+?)(?:_x(?P<tuple_size>[2-4]))?(?:\[(?P<index>\d+)\])?(?:\.(?P<modifiers>\w+))?(?:\s+as\s+(?P<scale_to>.*?))?$").unwrap()
+        });
 
         if let Some(c) = RE.captures(s) {
             let wildcard_name = &c["wildcard"];