}
// `SubregionOrigin` is used a lot. Make sure it doesn't unintentionally get bigger.
-#[cfg(target_arch = "x86_64")]
+#[cfg(all(target_arch = "x86_64", target_pointer_width = "64"))]
static_assert_size!(SubregionOrigin<'_>, 32);
/// Times when we replace late-bound regions with variables: