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[Bug tree-optimization/42108] [4.8/4.9 Regression] 50% performance regression
- 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: Thu, 11 Dec 2014 15:53:19 +0000
- Subject: [Bug tree-optimization/42108] [4.8/4.9 Regression] 50% performance regression
- Auto-submitted: auto-generated
- References: <bug-42108-4 at http dot gcc dot gnu dot org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=42108
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Known to work| |5.0
Summary|[4.8/4.9/5 Regression] 50% |[4.8/4.9 Regression] 50%
|performance regression |performance regression
Known to fail| |4.3.6
--- Comment #67 from Richard Biener <rguenth at gcc dot gnu.org> ---
Fixed on trunk (sofar).
--- Comment #68 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Thu Dec 11 15:52:47 2014
New Revision: 218630
URL: https://gcc.gnu.org/viewcvs?rev=218630&root=gcc&view=rev
Log:
2014-12-11 Richard Biener <rguenther@suse.de>
PR tree-optimization/42108
* trans-stmt.c (gfc_trans_do): Execute the division computing
countm1 before the loop entry check.
* gfortran.dg/pr42108.f90: Amend.
Modified:
trunk/gcc/fortran/ChangeLog
trunk/gcc/fortran/trans-stmt.c
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/gfortran.dg/pr42108.f90