[Bug rtl-optimization/78038] [5 Regression] internal compiler error: in get_sub_rtx, at ree.c:655

ktkachov at gcc dot gnu.org gcc-bugzilla@gcc.gnu.org
Fri Dec 2 12:23:00 GMT 2016


https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78038

--- Comment #12 from ktkachov at gcc dot gnu.org ---
Author: ktkachov
Date: Fri Dec  2 12:22:54 2016
New Revision: 243175

URL: https://gcc.gnu.org/viewcvs?rev=243175&root=gcc&view=rev
Log:
[ree] PR rtl-optimization/78038: Handle global register dataflow definitions in
ree

2016-12-02  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

        Backport from mainline
        2016-10-21  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

        PR rtl-optimization/78038
        * ree.c (get_defs): Return NULL if a defining insn for REG cannot
        be deduced to set REG through the RTL structure.
        (make_defs_and_copies_lists): Return false on a failing get_defs call.

        * gcc.target/aarch64/pr78038.c: New test.


Added:
    branches/gcc-5-branch/gcc/testsuite/gcc.target/aarch64/pr78038.c
Modified:
    branches/gcc-5-branch/gcc/ChangeLog
    branches/gcc-5-branch/gcc/ree.c
    branches/gcc-5-branch/gcc/testsuite/ChangeLog


More information about the Gcc-bugs mailing list