diff --git a/src/driver/jit.rs b/src/driver/jit.rs
index 0d62a13b4724e..ae9578eeffb61 100644
--- a/src/driver/jit.rs
+++ b/src/driver/jit.rs
@@ -74,7 +74,7 @@ fn create_jit_module(
     jit_builder.symbol("__clif_jit_fn", clif_jit_fn as *const u8);
     let mut jit_module = UnwindModule::new(JITModule::new(jit_builder), false);
 
-    let cx = crate::CodegenCx::new(tcx, jit_module.isa(), false, Symbol::intern("dummy_cgu_name"));
+    let cx = crate::CodegenCx::new(tcx, jit_module.isa(), false, sym::dummy_cgu_name);
 
     crate::allocator::codegen(tcx, &mut jit_module);
 
@@ -276,12 +276,7 @@ fn jit_fn(instance_ptr: *const Instance<'static>, trampoline_ptr: *const u8) ->
 
             jit_module.module.prepare_for_function_redefine(func_id).unwrap();
 
-            let mut cx = crate::CodegenCx::new(
-                tcx,
-                jit_module.isa(),
-                false,
-                Symbol::intern("dummy_cgu_name"),
-            );
+            let mut cx = crate::CodegenCx::new(tcx, jit_module.isa(), false, sym::dummy_cgu_name);
             codegen_and_compile_fn(tcx, &mut cx, &mut Context::new(), jit_module, instance);
 
             assert!(cx.global_asm.is_empty());
diff --git a/src/lib.rs b/src/lib.rs
index e6f6ae305816f..cac9975f04ce2 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -189,18 +189,13 @@ impl CodegenBackend for CraneliftCodegenBackend {
         // FIXME return the actually used target features. this is necessary for #[cfg(target_feature)]
         if sess.target.arch == "x86_64" && sess.target.os != "none" {
             // x86_64 mandates SSE2 support
-            vec![Symbol::intern("fxsr"), sym::sse, Symbol::intern("sse2")]
+            vec![sym::fsxr, sym::sse, sym::sse2]
         } else if sess.target.arch == "aarch64" {
             match &*sess.target.os {
                 "none" => vec![],
                 // On macOS the aes, sha2 and sha3 features are enabled by default and ring
                 // fails to compile on macOS when they are not present.
-                "macos" => vec![
-                    sym::neon,
-                    Symbol::intern("aes"),
-                    Symbol::intern("sha2"),
-                    Symbol::intern("sha3"),
-                ],
+                "macos" => vec![sym::neon, sym::aes, sym::sha2, sym::sha3],
                 // AArch64 mandates Neon support
                 _ => vec![sym::neon],
             }