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It looks like a cool improvement -- but must this be in GCC 4.2? Don't take this as discouragement, I really like the idea of using BLAS more when it's available (rationale: why invent the matmul wheel twice? ;-)
Does the driver know how to link in the BLAS library itself, or is it up to the user to provide the extra -lblas (or whatever) option?
Where is the documentation of the new options and this new feature?
Oh, and how does it handle the MATMUL(TRANSPOSE()) optimization?
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