[Bug middle-end/67222] [4.9/5/6 Regression] ICE in gimple_call_arg with bogus posix_memalign

[mpolacek at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67222

--- Comment #4 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Author: mpolacek
Date: Tue Aug 18 13:41:27 2015
New Revision: 226969

URL: https://gcc.gnu.org/viewcvs?rev=226969&root=gcc&view=rev
Log:
        PR middle-end/67222
        * gimple-low.c (lower_stmt): Don't lower BUILT_IN_POSIX_MEMALIGN
        if the call isn't valid.
        * tree-ssa-alias.c (ref_maybe_used_by_call_p_1): Check builtins using
        gimple_call_builtin_p.
        (call_may_clobber_ref_p_1): Likewise.
        (stmt_kills_ref_p): Likewise.

        * gcc.dg/torture/pr67222.c: New test.

Added:
    trunk/gcc/testsuite/gcc.dg/torture/pr67222.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/gimple-low.c
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-ssa-alias.c