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[Bug tree-optimization/84824] DCE fails to remove dead code of std::function constructor
- From: "manjian2006 at gmail dot com" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Fri, 16 Mar 2018 13:25:08 +0000
- Subject: [Bug tree-optimization/84824] DCE fails to remove dead code of std::function constructor
- Auto-submitted: auto-generated
- References: <bug-84824-4@http.gcc.gnu.org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84824
--- Comment #11 from linzj <manjian2006 at gmail dot com> ---
This patch makes the printf clobber/use set correct. But it doesn't seem like
much help.
Maybe the escape set only comes from the function wise one.