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[Bug target/32593] Missed optimization of 'y = constant - x' operation
- From: "rguenth at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 7 Nov 2009 14:44:39 -0000
- Subject: [Bug target/32593] Missed optimization of 'y = constant - x' operation
- References: <bug-32593-10175@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #7 from rguenth at gcc dot gnu dot org 2009-11-07 14:44 -------
Oh, there's no loop. Then it's the not implemented strength-reduction on
scalar code that is the issue. In theory strength-reduction can be
integrated into our global value-numbering / PRE code, but nobody has done
that.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=32593