add a file-level comment to the string-push codegen test

lincot · lincot · commit a2effde47cb6 · 2024-12-20T18:13:24.000+03:00
diff --git a/tests/codegen/string-push.rs b/tests/codegen/string-push.rs
@@ -1,3 +1,5 @@
+//! Check that `String::push` is optimized enough not to call `memcpy`.
+
 //@ compile-flags: -O
 #![crate_type = "lib"]
 

Original file line number	Diff line number	Diff line change
`@@ -1,3 +1,5 @@`
	`1`	+//! Check that `String::push` is optimized enough not to call `memcpy`.
	`2`	`+`
`1`	`3`	`//@ compile-flags: -O`
`2`	`4`	`#![crate_type = "lib"]`
`3`	`5`