https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87728

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |alias
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2018-10-24
                 CC|                            |rguenth at gcc dot gnu.org
     Ever confirmed|0                           |1

--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
Primary cause:

/* If the statement STMT may clobber the memory reference REF return true,
   otherwise return false.  */

bool
stmt_may_clobber_ref_p_1 (gimple *stmt, ao_ref *ref, bool tbaa_p)
{
...
  else if (gimple_code (stmt) == GIMPLE_ASM)
    return true;

similarly ref_maybe_used_by_stmt_p ().

Not sure if really worth the trouble though.

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