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

[amonakov at gcc dot gnu dot org]

------- Comment #13 from amonakov at gcc dot gnu dot org  2010-07-20 14:13 -------
(In reply to comment #10)
> Re. comment 9: Well, the order of *this* store and *this* load is the
> difference between the test case failing or passing. So I do not think the
> problem is between this load and another store.

To clarify, I'm saying that the problem is in moving insn 9 (the store) past
insn 21, not past insn 28.  Your simplified dumps in comment #10 support that
(r15 is incremented and decremented, r14 is post-modified; thus, both insn 21
and insn 9 touch memory[r12]).  Insn 28 is not relevant to the miscompilation.


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