[Hexagon] Renaming classes in preparation for replacement.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@224036 91177308-0d34-0410-b5e6-96231b3b80d8
[CodeGen] Let MachineVerifierPass own its banner string

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@224041 91177308-0d34-0410-b5e6-96231b3b80d8
[CodeGen] Add print and verify pass after each MachineFunctionPass by default

Previously print+verify passes were added in a very unsystematic way, which is
annoying when debugging as you miss intermediate steps and allows bugs to stay
unnotice when no verification is performed.

To make this change practical I added the possibility to explicitely disable
verification. I used this option on all places where no verification was
performed previously (because alot of places actually don't pass the
MachineVerifier).
In the long term these problems should be fixed properly and verification
enabled after each pass. I'll enable some more verification in subsequent
commits.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@224042 91177308-0d34-0410-b5e6-96231b3b80d8
Enable machineverifier in debug mode for X86, ARM, AArch64, Mips

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@224043 91177308-0d34-0410-b5e6-96231b3b80d8
Silence static analyzer warnings in LLVMSupport.

The static analyzer catches a few potential bugs in LLVMSupport. Add
in asserts to silence the warnings.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@224044 91177308-0d34-0410-b5e6-96231b3b80d8