AVX Testcases

I should be sending up some AVX code this week. When I do this
I'd like to generate some testcases to make sure we actually
generate AVX code. Ideally we'd have a testcase for each AVX
pattern but that's probably overkill. Still, we'd like a lot
of tests, I think.

Should these tests go into CodeGen/X86 or should I create a new space,
like CodeGen/X86/SIMD? I tend to favor the latter as it keeps things
more compartmentalized and cleaner.

                             -Dave

Adding a subdirectory here sounds good. "SIMD" might be a bit too general
though; how about test/CodeGen/X86/AVX?

Dan

This will be a rewrite of all the x86 SIMD stuff so the name seemed
appropriate. It'll be testing the whole infrastructure, not just AVX.

                                 -Dave

Ok, SIMD sounds fine.

Dan