[X86][BtVer2] Add tests for all vector instructions that should match the...

[X86][BtVer2] Add tests for all vector instructions that should match the dependency-breaking 'zero-idiom'

As detailed on Agner's Microarchitecture doc (21.8 AMD Bobcat and Jaguar pipeline - Dependency-breaking instructions), all these instructions are dependency breaking and zero the destination register.

TODO: Scalar instructions still need to be tested (need to check EFLAGS handling).
llvm-svn: 334104