[Bug rtl-optimization/58029] base_alias_check says pretend-args saves and varargs accesses don't alias

[amylaar at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58029

--- Comment #1 from Jorn Wolfgang Rennecke <amylaar at gcc dot gnu.org> ---
Created attachment 30572
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=30572&action=edit
patch

This patch fixes the problem for the epiphany, however, it appears to
cause 37 guality regressions for i686-pc-linuc-gnu - looking in the log
file, I find numerous instances where gdb just says <optimized out> .