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[Bug target/17390] missing floating point compare optimization
- From: "steven at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 19 Oct 2005 13:13:55 -0000
- Subject: [Bug target/17390] missing floating point compare optimization
- References: <bug-17390-1649@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #5 from steven at gcc dot gnu dot org 2005-10-19 13:13 -------
That patch is yet another example of why we constantly keep having compile time
problems. Just add more, and more, and more, and more. And act surprised when
someone notices that gcc 4.1 is four times as slow as 2.95.3 for very little
benefit on x86 at least.
Why a new pass over all insns, instead of e.g. teaching postreload cse or
postreload gcse about this kind of thing?
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17390