[Bug tree-optimization/54000] [4.8 Regression] Performance breakdown for gcc-4.{6,7} vs. gcc-4.5 using std::vector in matrix vector multiplication (IVopts / inliner)

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=54000

--- Comment #16 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Mon Feb  9 11:51:05 2015
New Revision: 220536

URL: https://gcc.gnu.org/viewcvs?rev=220536&root=gcc&view=rev
Log:
2015-02-09  Richard Biener  <rguenther@suse.de>

    PR tree-optimization/54000
    * tree-ssa-looo-ivopts.c: Include tree-vectorizer.h.
    (struct ivopts_data): Add loop_loc member.
    (tree_ssa_iv_optimize_loop): Dump loop location.
    (create_new_ivs): Likewise, also dump number of IVs generated.

    * g++.dg/tree-ssa/ivopts-3.C: New testcase.

Added:
    trunk/gcc/testsuite/g++.dg/tree-ssa/ivopts-3.C
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-ssa-loop-ivopts.c