[Bug tree-optimization/73714] [Regression 7] Incorrect unsigned long long arithmetic optimization

[glisse at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=73714

--- Comment #3 from Marc Glisse <glisse at gcc dot gnu.org> ---
Author: glisse
Date: Wed Aug 31 18:22:58 2016
New Revision: 239902

URL: https://gcc.gnu.org/viewcvs?rev=239902&root=gcc&view=rev
Log:
match.pd: Revert a * (1 << b) relaxation.

2016-08-31  Marc Glisse  <marc.glisse@inria.fr>

        PR tree-optimization/73714
gcc/
        * match.pd (a * (1 << b)): Revert change from 2016-05-23.
gcc/testsuite/
        * gcc.dg/tree-ssa/pr73714.c: New test.


Added:
    trunk/gcc/testsuite/gcc.dg/tree-ssa/pr73714.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/match.pd
    trunk/gcc/testsuite/ChangeLog