diff --git a/src/librustc_codegen_llvm/llvm_util.rs b/src/librustc_codegen_llvm/llvm_util.rs
index 87ee9ef5adb23..e941998098d00 100644
--- a/src/librustc_codegen_llvm/llvm_util.rs
+++ b/src/librustc_codegen_llvm/llvm_util.rs
@@ -85,6 +85,8 @@ unsafe fn configure_llvm(sess: &Session) {
 
 const ARM_WHITELIST: &[(&str, Option<&str>)] = &[
     ("mclass", Some("arm_target_feature")),
+    ("rclass", Some("arm_target_feature")),
+    ("dsp", Some("arm_target_feature")),
     ("neon", Some("arm_target_feature")),
     ("v7", Some("arm_target_feature")),
     ("vfp2", Some("arm_target_feature")),