------- Comment #10 from rakdver at gcc dot gnu dot org 2006-03-14 01:01
-------
The following patch should fix the problem. I am fairly sure a similar check
used to be somewhere in ivopts, but it probably got lost when MEM_REFs were
introduced (I am somewhat surprised ivopts do not ICE and produce something
that actually resembles a correct code in this case...)
Index: tree-ssa-loop-ivopts.c
===================================================================
*** tree-ssa-loop-ivopts.c (revision 111993)
--- tree-ssa-loop-ivopts.c (working copy)
*************** find_interesting_uses_address (struct iv
*** 1482,1489 ****
/* Ignore bitfields for now. Not really something terribly complicated
to handle. TODO. */
! if (TREE_CODE (base) == COMPONENT_REF
! && DECL_NONADDRESSABLE_P (TREE_OPERAND (base, 1)))
goto fail;
if (STRICT_ALIGNMENT
--- 1482,1490 ----
/* Ignore bitfields for now. Not really something terribly complicated
to handle. TODO. */
! if (TREE_CODE (base) == BIT_FIELD_REF
! || (TREE_CODE (base) == COMPONENT_REF
! && DECL_NONADDRESSABLE_P (TREE_OPERAND (base, 1))))
goto fail;
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26643
