[Bug target/77326] [avr] Invalid optimization using varargs and a weak function

[gjl at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77326

--- Comment #3 from Georg-Johann Lay <gjl at gcc dot gnu.org> ---
Author: gjl
Date: Wed Sep 21 09:31:38 2016
New Revision: 240308

URL: https://gcc.gnu.org/viewcvs?rev=240308&root=gcc&view=rev
Log:
        Backport from 2016-09-21 trunk r240306.
        PR target/77326
        * config/avr/avr.c (avr_notice_update_cc) [CC_NONE]: If insn
        touches some regs mentioned in cc_status, do CC_STATUS_INIT.


Added:
    branches/gcc-6-branch/gcc/testsuite/gcc.target/avr/torture/pr77326.c
Modified:
    branches/gcc-6-branch/gcc/ChangeLog
    branches/gcc-6-branch/gcc/config/avr/avr.c
    branches/gcc-6-branch/gcc/testsuite/ChangeLog