https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81428

--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Mon Jul 17 10:20:41 2017
New Revision: 250265

URL: https://gcc.gnu.org/viewcvs?rev=250265&root=gcc&view=rev
Log:
        PR tree-optimization/81428
        * match.pd (X / X -> one): Don't optimize _Fract divisions, as 1
        can't be built for those types.

        * gcc.dg/fixed-point/pr81428.c: New test.

Added:
    trunk/gcc/testsuite/gcc.dg/fixed-point/pr81428.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/match.pd
    trunk/gcc/testsuite/ChangeLog

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