[Bug middle-end/37742] [4.4 Regression] ICE in vectorizer with restrict pointer

[jakub at gcc dot gnu dot org]

------- Comment #17 from jakub at gcc dot gnu dot org  2008-11-18 18:26 -------
Created an attachment (id=16718)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=16718&action=view)
gcc44-pr37742.patch

Testcase #c7 can be fixed by this patch.  Without it, alias sets in presence of
restricted pointers act weirdly - if it is called on an INDIRECT_REF with a
SSA_NAME, it will return one alias set, but if a new INDIRECT_REF is
constructed from the SSA_NAME's var decl, then a different alias set is
returned.
Unfortunately this patch breaks bootstrap in matmul_i2.c, ICE in
vectorizable_store.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37742