https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105091
--- Comment #11 from Jiu Fu Guo <guojiufu at gcc dot gnu.org> ---
Find one difference between trunk and r12-656:
On trunk:
tree expr = MEM_EXPR (mem);
where mem is
(mem/f/c:DI (plus:DI (reg/f:DI 110 sfp)
(const_int 32 [0x20])) [3 GOTMP.2[0].x.__values+0 S8 A128])
and then expr is GOTMP.2[0].x.__values
base = get_base_address (expr); base is "GOTMP.2"
"may_be_aliased (base)" returns false.
On r12-656: "may_be_aliased (base)" returns true.
may_be_aliased checks TREE_ADDRESSABLE which also returns differences between
trunk and r12-656.
