[Bug middle-end/19988] [4.3/4.4/4.5 Regression] pessimizes fp multiply-add/subtract combo

2010-01-21 Thread rguenth at gcc dot gnu dot org
--- Comment #24 from rguenth at gcc dot gnu dot org 2010-01-21 12:15 --- Subject: Bug 19988 Author: rguenth Date: Thu Jan 21 12:15:40 2010 New Revision: 156152 URL: http://gcc.gnu.org/viewcvs?root=gccview=revrev=156152 Log: 2010-01-21 Richard Guenther rguent...@suse.de PR

[Bug middle-end/19988] [4.3/4.4/4.5 Regression] pessimizes fp multiply-add/subtract combo

2010-01-19 Thread rguenth at gcc dot gnu dot org
-- rguenth at gcc dot gnu dot org changed: What|Removed |Added BugsThisDependsOn|42802 | AssignedTo|unassigned at gcc dot gnu |rguenth at gcc dot

[Bug middle-end/19988] [4.3/4.4/4.5 Regression] pessimizes fp multiply-add/subtract combo

2010-01-18 Thread rguenth at gcc dot gnu dot org
--- Comment #23 from rguenth at gcc dot gnu dot org 2010-01-18 15:16 --- And a fix along comment #14 would be (untested, but of course fixes the testcase): Index: gcc/fold-const.c === --- gcc/fold-const.c(revision

[Bug middle-end/19988] [4.3/4.4/4.5 Regression] pessimizes fp multiply-add/subtract combo

2010-01-16 Thread rguenth at gcc dot gnu dot org
--- Comment #18 from rguenth at gcc dot gnu dot org 2010-01-16 19:09 --- Created an attachment (id=19626) -- (http://gcc.gnu.org/bugzilla/attachment.cgi?id=19626action=view) VN based fix This extends the value-numberers value insertion facility to handle this special case. Well, it

[Bug middle-end/19988] [4.3/4.4/4.5 Regression] pessimizes fp multiply-add/subtract combo

2010-01-16 Thread rguenth at gcc dot gnu dot org
--- Comment #19 from rguenth at gcc dot gnu dot org 2010-01-16 19:15 --- What does (can) the new VN do here? -- rguenth at gcc dot gnu dot org changed: What|Removed |Added

[Bug middle-end/19988] [4.3/4.4/4.5 Regression] pessimizes fp multiply-add/subtract combo

2010-01-16 Thread matz at gcc dot gnu dot org
--- Comment #20 from matz at gcc dot gnu dot org 2010-01-16 20:10 --- It obviously could do the same. It all depends on the answer to this question: Do we want to deal with this via canonicalization of expressions, and if yes, then also on the outcome of our discussion of where

[Bug middle-end/19988] [4.3/4.4/4.5 Regression] pessimizes fp multiply-add/subtract combo

2010-01-16 Thread rguenth at gcc dot gnu dot org
--- Comment #21 from rguenth at gcc dot gnu dot org 2010-01-16 20:30 --- (In reply to comment #20) It obviously could do the same. It all depends on the answer to this question: Do we want to deal with this via canonicalization of expressions, and if yes, then also on the

[Bug middle-end/19988] [4.3/4.4/4.5 Regression] pessimizes fp multiply-add/subtract combo

2010-01-16 Thread rguenth at gcc dot gnu dot org
--- Comment #22 from rguenth at gcc dot gnu dot org 2010-01-16 21:42 --- Created an attachment (id=19627) -- (http://gcc.gnu.org/bugzilla/attachment.cgi?id=19627action=view) fixed patch Fixed patch that actually bootstraps. -- rguenth at gcc dot gnu dot org changed:

[Bug middle-end/19988] [4.3/4.4/4.5 Regression] pessimizes fp multiply-add/subtract combo

2009-08-04 Thread rguenth at gcc dot gnu dot org
--- Comment #17 from rguenth at gcc dot gnu dot org 2009-08-04 12:26 --- GCC 4.3.4 is being released, adjusting target milestone. -- rguenth at gcc dot gnu dot org changed: What|Removed |Added

[Bug middle-end/19988] [4.3/4.4/4.5 Regression] pessimizes fp multiply-add/subtract combo

2009-03-31 Thread jsm28 at gcc dot gnu dot org
--- Comment #16 from jsm28 at gcc dot gnu dot org 2009-03-31 16:45 --- Closing 4.2 branch. -- jsm28 at gcc dot gnu dot org changed: What|Removed |Added