[Bug tree-optimization/71636] Missed optimization in variable alignment test

[prathamesh3492 at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71636

--- Comment #4 from prathamesh3492 at gcc dot gnu.org ---
Author: prathamesh3492
Date: Mon Oct 17 08:48:43 2016
New Revision: 241229

URL: https://gcc.gnu.org/viewcvs?rev=241229&root=gcc&view=rev
Log:
2016-10-17  Prathamesh Kulkarni  <prathamesh.kulkarni@linaro.org>

        PR tree-optimization/71636
        * match.pd (x & ((1 << b) - 1) -> x & ~(~0 << b)): New pattern.

testsuite/
        * gcc.dg/pr71636-1.c: New test-case.
        * gcc.dg/pr71636-2.c: Likewise.

Added:
    trunk/gcc/testsuite/gcc.dg/pr71636-1.c
    trunk/gcc/testsuite/gcc.dg/pr71636-2.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/match.pd
    trunk/gcc/testsuite/ChangeLog