[Bug tree-optimization/65217] __builtin_unreachable in if statement causes bad assembly generation

[law at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65217

--- Comment #4 from Jeffrey A. Law <law at gcc dot gnu.org> ---
Author: law
Date: Tue Apr 28 04:01:28 2015
New Revision: 222499

URL: https://gcc.gnu.org/viewcvs?rev=222499&root=gcc&view=rev
Log:
        PR tree-optimization/65217
        * tree-ssa-dom.c (record_equality): Given two SSA_NAMEs, if just one
        of them has a single use, make sure it is the LHS of the implied
        copy.

        PR tree-optimization/65217
        * gcc.target/i386/pr65217.c: Remove XFAIL.

Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/testsuite/gcc.target/i386/pr65217.c
    trunk/gcc/tree-ssa-dom.c