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Subject: [Bug target/55894] No constant propagation in Intel intrinsics
Date: Mon, 07 Jan 2013 13:48:00 -0000
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55894

--- Comment #2 from Marc Glisse <glisse at gcc dot gnu.org> 2013-01-07 13:48:17 UTC ---
(In reply to comment #1)
> Usually target built-in folders are missing (targetm.fold_builtin).

That's one possibility. But I was wondering (and almost filed it in
rtl-optimization) why the folding was not already happening in RTL. The
builtins are expanded to standard vec_duplicate, eq, xor.