Disable validation for some tests

Author: oli-obk

tests/run-pass-fullmir/u128.rs

@@ -8,6 +8,8 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
+// compile-flags: -Zmir-emit-validate=0
+
 #![feature(i128_type)]
 
 fn b<T>(t: T) -> T { t }

tests/run-pass-fullmir/unsized-tuple-impls.rs

@@ -8,6 +8,8 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
+// compile-flags: -Zmir-emit-validate=0
+
 #![feature(unsized_tuple_coercion)]
 use std::mem;
 

tests/run-pass/pointers.rs

@@ -1,3 +1,5 @@
+// compile-flags: -Zmir-emit-validate=0
+
 fn one_line_ref() -> i16 {
     *&1
 }