[Bug tree-optimization/40770] Vectorization of complex types, vectorization of sincos missing

[rguenther at suse dot de]

------- Comment #3 from rguenther at suse dot de  2009-07-16 13:05 -------
Subject: Re:  Vectorization of complex types,
 vectorization of sincos missing

On Thu, 16 Jul 2009, irar at il dot ibm dot com wrote:

> ------- Comment #2 from irar at il dot ibm dot com  2009-07-16 12:29 -------
> pr40770.c:20: note: ==> examining statement: sincostmp.21_1 = __builtin_cexpi
> (D.1625_3);
> pr40770.c:20: note: get vectype for scalar type:  complex double
> pr40770.c:20: note: not vectorized: unsupported data-type complex double
> 
> make_vector_type returns NULL for this type.

Yes - there is no vector type for complex double.  But the vectorizer
could query for a vector type for the complex component type (double)
and divide the vector element count by 2 (for complex) to get the
vectorization factor which would be 1 here.  Should SLP the be possible
for that loop?

Richard.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40770