Fix up the generator crates to use the new syntax

Author: sayantn

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

@@ -364,7 +364,7 @@ fn generate_single_test(
         quote!()
     };
 
-    let feats = load.target_features.join(",");
+    let feats = &load.target_features;
 
     if let Some(store) = store {
         let data_init = if *tuple_len == 1 {
@@ -415,7 +415,7 @@ fn generate_single_test(
         };
 
         Ok(quote! {
-            #[simd_test(enable = #feats)]
+            #[simd_test(#( #feats ),*)]
             unsafe fn #test_name() {
                 #octaword_guard
                 #length_call
@@ -458,7 +458,7 @@ fn generate_single_test(
             }
         };
         Ok(quote! {
-            #[simd_test(enable = #feats)]
+            #[simd_test(#( #feats ),*)]
             unsafe fn #test_name() {
                 #octaword_guard
                 #bases_load
@@ -804,7 +804,7 @@ fn assert_vector_matches_u64(vector: svuint64_t, expected: svuint64_t) {{
     )
 });
 
-const MANUAL_TESTS: &str = "#[simd_test(enable = \"sve\")]
+const MANUAL_TESTS: &str = "#[simd_test(\"sve\")]
 unsafe fn test_ffr() {
     svsetffr();
     let ffr = svrdffr();

crates/stdarch-gen-loongarch/src/main.rs

@@ -53,20 +53,19 @@ impl TargetFeature {
     }
 
     /// A string for use with `#[target_feature(...)]`.
-    fn as_target_feature_arg(&self, ins: &str) -> String {
+    fn as_target_feature_arg(&self, ins: &str) -> Vec<&'static str> {
         let vec = match *self {
             // Features included with LoongArch64 LSX and LASX.
             Self::Lsx => "lsx",
             Self::Lasx => "lasx",
         };
-        let frecipe = match ins {
+        match ins {
             "lsx_vfrecipe_s" | "lsx_vfrecipe_d" | "lsx_vfrsqrte_s" | "lsx_vfrsqrte_d"
             | "lasx_xvfrecipe_s" | "lasx_xvfrecipe_d" | "lasx_xvfrsqrte_s" | "lasx_xvfrsqrte_d" => {
-                ",frecipe"
+                vec![vec, "frecipe"]
             }
-            _ => "",
-        };
-        format!("{vec}{frecipe}")
+            _ => vec![vec],
+        }
     }
 
     fn attr(name: &str, value: impl fmt::Display) -> String {
@@ -77,7 +76,7 @@ impl TargetFeature {
     fn to_target_feature_attr(self, ins: &str) -> Lines {
         Lines::single(Self::attr(
             "target_feature",
-            self.as_target_feature_arg(ins),
+            self.as_target_feature_arg(ins).join(","),
         ))
     }
 
@@ -1561,7 +1560,7 @@ fn gen_test_body(
             r#"
 static void {current_name}(void)
 {{
-    printf("\n#[simd_test(enable = \"{}\")]\n");
+    printf("\n#[simd_test(\"{}\")]\n");
     printf("unsafe fn test_{current_name}() {{\n");
 {fn_inputs}
 {fn_output}
@@ -1571,7 +1570,7 @@ static void {current_name}(void)
     printf("}}\n");
 }}
 "#,
-            target.as_target_feature_arg(current_name)
+            target.as_target_feature_arg(current_name).join("\", \"")
         )
     };
     let call_function = format!("    {current_name}();\n");