[Bug tree-optimization/70754] [5/6/7 Regression] ICE during predictive commoning

[amker at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70754

--- Comment #10 from amker at gcc dot gnu.org ---
Author: amker
Date: Mon Jan 23 15:59:19 2017
New Revision: 244815

URL: https://gcc.gnu.org/viewcvs?rev=244815&root=gcc&view=rev
Log:
        PR tree-optimization/70754
        * tree-predcom.c (stmt_combining_refs): New parameter INSERT_BEFORE.
        (reassociate_to_the_same_stmt): New parameter INSERT_BEFORE.  Insert
        combined stmt before it if not NULL.
        (combine_chains): Process refs reversely and compute dominance point
        for root ref.

        gcc/testsuite
        PR tree-optimization/70754
        * gfortran.dg/pr70754.f90: New test.

Added:
    trunk/gcc/testsuite/gfortran.dg/pr70754.f90
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-predcom.c