diff --git a/src/librustc_trans/trans/cabi_aarch64.rs b/src/librustc_trans/trans/cabi_aarch64.rs
index 3485e29707a..0d8ef9e2fc9 100644
--- a/src/librustc_trans/trans/cabi_aarch64.rs
+++ b/src/librustc_trans/trans/cabi_aarch64.rs
@@ -139,7 +139,8 @@ fn is_reg_ty(ty: Type) -> bool {
         Integer
         | Pointer
         | Float
-        | Double => true,
+        | Double
+        | Vector => true,
         _ => false
     }
 }
diff --git a/src/librustc_trans/trans/cabi_arm.rs b/src/librustc_trans/trans/cabi_arm.rs
index 13c70875f68..7d1a8ab1452 100644
--- a/src/librustc_trans/trans/cabi_arm.rs
+++ b/src/librustc_trans/trans/cabi_arm.rs
@@ -169,7 +169,8 @@ fn is_reg_ty(ty: Type) -> bool {
         Integer
         | Pointer
         | Float
-        | Double => true,
+        | Double
+        | Vector => true,
         _ => false
     }
 }
diff --git a/src/librustc_trans/trans/cabi_mips.rs b/src/librustc_trans/trans/cabi_mips.rs
index 70b29b5fb75..776be8855cb 100644
--- a/src/librustc_trans/trans/cabi_mips.rs
+++ b/src/librustc_trans/trans/cabi_mips.rs
@@ -123,7 +123,8 @@ fn is_reg_ty(ty: Type) -> bool {
         Integer
         | Pointer
         | Float
-        | Double => true,
+        | Double
+        | Vector => true,
         _ => false
     };
 }