[Bug rtl-optimization/60131] [4.9 Regression] RTL check fail in rhs_regno

[law at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60131

--- Comment #5 from Jeffrey A. Law <law at gcc dot gnu.org> ---
Author: law
Date: Fri Feb 14 20:26:31 2014
New Revision: 207792

URL: http://gcc.gnu.org/viewcvs?rev=207792&root=gcc&view=rev
Log:
    PR rtl-optimization/60131
    * ree.c (get_extended_src_reg): New function.
    (combine_reaching_defs): Use it rather than assuming location
    of REG.
    (find_and_remove_re): Verify first operand of extension is
    a REG before adding the insns to the copy list.

    PR rtl-optimization/60131
    * g++.dg/torture/pr60131.C: New test.

Added:
    trunk/gcc/testsuite/g++.dg/torture/pr60131.C
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/ree.c
    trunk/gcc/testsuite/ChangeLog