Convert vld1_lane_* and other methods to const generics (#1034)

library/stdarch/crates/core_arch/src/macros.rs

@@ -9,6 +9,13 @@ impl<const IMM: i32, const BITS: i32> ValidateConstImm<IMM, BITS> {
     };
 }
 
+#[allow(unused)]
+macro_rules! static_assert_imm1 {
+    ($imm:ident) => {
+        let _ = $crate::core_arch::macros::ValidateConstImm::<$imm, 1>::VALID;
+    };
+}
+
 #[allow(unused)]
 macro_rules! static_assert_imm2 {
     ($imm:ident) => {