[Bug target/64979] [4.8/4.9/5 Regression] stdarg optimization not able to find escape sites in phi nodes

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64979

--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Mon Feb  9 17:01:36 2015
New Revision: 220543

URL: https://gcc.gnu.org/viewcvs?rev=220543&root=gcc&view=rev
Log:
    PR target/64979
    * tree-stdarg.c (pass_stdarg::execute): Scan phi node args for
    va_list escapes.

    * gcc.dg/tree-ssa/stdarg-7.c: New test.
    * gcc.c-torture/execute/pr64979.c: New test.

Added:
    trunk/gcc/testsuite/gcc.c-torture/execute/pr64979.c
    trunk/gcc/testsuite/gcc.dg/tree-ssa/stdarg-7.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-stdarg.c