[Bug rtl-optimization/43494] gcc.c-torture/execute/vector-2.c fails with -fpic/-fPIC

[amonakov at gcc dot gnu dot org]

------- Comment #9 from amonakov at gcc dot gnu dot org  2010-07-20 08:25 -------
It's probably worth noting that the disambiguated MEMs are of different widths:

> load from "(mem/c/i:DI (reg/f:DI 14 r14 [351]) [2 t+8 S8 A64])"
> store to  "(mem/s/j/c:SI (reg/f:DI 15 r15 [343]) [2 t+4 S4 A32])"

(btw, IIUC the above mems do not alias indeed, and the problem is in
disambiguating the above store and a load from
(mem/c/i:DI (post_inc:DI (reg/f:DI 14 r14 [351])) [2 t+0 S8 A128]) )

Also, with -fno-strict-aliasing the failure vanishes.


-- 

amonakov at gcc dot gnu dot org changed:

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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43494