attributes: Add #[test] and #[simd_test]

gcc/rust/ChangeLog:

	* util/rust-attribute-values.h: Add declarations for them.
	* util/rust-attributes.cc: Add definitions.

Author: CohenArthur

gcc/rust/util/rust-attribute-values.h

@@ -85,6 +85,10 @@ class Attributes
   static constexpr auto &NON_EXHAUSTIVE = "non_exhaustive";
 
   static constexpr auto &RUSTFMT = "rustfmt";
+
+  static constexpr auto &TEST = "test";
+
+  static constexpr auto &SIMD_TEST = "simd_test";
 };
 } // namespace Values
 } // namespace Rust

gcc/rust/util/rust-attributes.cc

@@ -95,7 +95,10 @@ static const BuiltinAttrDefinition __definitions[]
 
      {Attrs::FUNDAMENTAL, TYPE_CHECK},
      {Attrs::NON_EXHAUSTIVE, TYPE_CHECK},
-     {Attrs::RUSTFMT, EXTERNAL}};
+     {Attrs::RUSTFMT, EXTERNAL},
+
+     {Attrs::TEST, CODE_GENERATION},
+     {Attrs::SIMD_TEST, CODE_GENERATION}};
 
 BuiltinAttributeMappings *
 BuiltinAttributeMappings::get ()