FileCheck scalar_literal_propagation.

Author: cjgillot

tests/mir-opt/const_prop/scalar_literal_propagation.rs

@@ -1,8 +1,10 @@
-// skip-filecheck
 // unit-test: ConstProp
 // EMIT_MIR_FOR_EACH_PANIC_STRATEGY
+
 // EMIT_MIR scalar_literal_propagation.main.ConstProp.diff
 fn main() {
+    // CHECK-LABEL: fn main(
+    // CHECK: = consume(const 1_u32)
     let x = 1;
     consume(x);
 }