Revert "Revert "Add Constant Hoisting Pass" (r200034)"

This reverts commit r200058 and adds the using directive for
ARMTargetTransformInfo to silence two g++ overload warnings.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200062 91177308-0d34-0410-b5e6-96231b3b80d8
[Mips] Move 2 test cases from MC to CodeGen.

No code changes. Just reassignment of test case files.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200064 91177308-0d34-0410-b5e6-96231b3b80d8
Remove an easy use of EmitRawText from PPC.

This makes lib/Target/PowerPC EmitRawText free.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200065 91177308-0d34-0410-b5e6-96231b3b80d8