FileCheck checked_add.

Author: cjgillot

tests/mir-opt/const_prop/checked_add.rs

@@ -1,9 +1,12 @@
-// skip-filecheck
 // EMIT_MIR_FOR_EACH_PANIC_STRATEGY
 // unit-test: ConstProp
 // compile-flags: -C overflow-checks=on
 
 // EMIT_MIR checked_add.main.ConstProp.diff
 fn main() {
+    // CHECK-LABEL: fn main(
+    // CHECK: debug x => [[x:_.*]];
+    // CHECK: assert(!const false,
+    // CHECK: [[x]] = const 2_u32;
     let x: u32 = 1 + 1;
 }