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[Bug middle-end/77568] [7 regression] CSE/PRE/Hoisting blocks common instruction contractions
- From: "rguenth at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Tue, 13 Sep 2016 13:08:08 +0000
- Subject: [Bug middle-end/77568] [7 regression] CSE/PRE/Hoisting blocks common instruction contractions
- Auto-submitted: auto-generated
- References: <bug-77568-4@http.gcc.gnu.org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77568
--- Comment #6 from Richard Biener <rguenth at gcc dot gnu.org> ---
Note that all "bad" transforms can be done by users on the source level
already. So the _only_ proper solution is to handle the situation in the
passes that now refuse to do an important optimization (like combine).