[Bug tree-optimization/15346] [tree-ssa] combine two successive divisions

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=15346

--- Comment #8 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Mon Dec  1 13:13:28 2014
New Revision: 218211

URL: https://gcc.gnu.org/viewcvs?rev=218211&root=gcc&view=rev
Log:
2014-12-01  Richard Biener  <rguent...@suse.de>

    PR tree-optimization/15346
    * Makefile.in (gimple-match.o-warn): Remove -Wno-unused-parameter,
    add -Wno-unused-but-set-variable.
    * match.pd: Combine two successive divisions.

    * gcc.dg/tree-ssa/forwprop-32.c: New testcase.

Added:
    trunk/gcc/testsuite/gcc.dg/tree-ssa/forwprop-32.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/Makefile.in
    trunk/gcc/match.pd
    trunk/gcc/testsuite/ChangeLog