[weak vtables] Remove a bunch of weak vtables

This patch removes most of the trivial cases of weak vtables by pinning them to
a single object file. The memory leaks in this version have been fixed. Thanks
Alexey for pointing them out.

Differential Revision: http://llvm-reviews.chandlerc.com/D2068

Reviewed by Andy

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@195064 91177308-0d34-0410-b5e6-96231b3b80d8
[Mips] Support for MicroMips STO refactoring.

No true functional changes.

Change the "hack" name of emitMipsHackSTOCG to emitSymSTO.

Remove demonstration code in AsmParser for emitMipsHackSTOCG and
emitMipsHackELFFlags. The STO field is in an ELF symbol and is not
an explicit directive. That said, we are missing the compliment call
in AsmParser and that will need to be addressed soon.

XFAIL dummy tests for emitMipsHackELFFlags and emitMipsHackELFFlags.
These will built out with following patches.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@195067 91177308-0d34-0410-b5e6-96231b3b80d8
Add predicate for AArch64 crypto instructions.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@195071 91177308-0d34-0410-b5e6-96231b3b80d8
implement MC layer of AArch64 neon instruction PMULL and PMULL2 with 128 bit integer.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@195072 91177308-0d34-0410-b5e6-96231b3b80d8
Implement AArch64 SISD intrinsics for vget_high and vget_low.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@195074 91177308-0d34-0410-b5e6-96231b3b80d8
Remove unused variable.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@195075 91177308-0d34-0410-b5e6-96231b3b80d8
Fix previous commit and fully remove variable.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@195076 91177308-0d34-0410-b5e6-96231b3b80d8