Remove some really nasty uses of hasRawTextSupport.

When MC was first added, targets could use hasRawTextSupport to keep features
working before they were added to the MC interface.

The design goal of MC is to provide an uniform api for printing assembly and
object files. Short of relaxations and other corner cases, a object file is
just another representation of the assembly.

It was never the intention that targets would keep doing things like

if (hasRawTextSupport())
  Set flags in one way.
else
  Set flags in another way.

When they do that they create two code paths and the object file is no longer
just another representation of the assembly. This also then requires testing
with llc -filetype=obj, which is extremelly brittle.

This patch removes some of these hacks by replacing them with smaller ones.
The ARM flag setting is trivial, so I just moved it to the constructor. For
Mips, the patch adds two temporary hack directives that allow the assembly
to represent the same things as the object file was already able to.

The hope is that the mips developers will replace the hack directives with
the same ones that gas uses and drop the -print-hack-directives flag.

I will also try to implement a target streamer interface, so that we can
move this out of the common code.

In summary, for any new work, two rules of the thumb are
  * Don't use "llc -filetype=obj" in tests.
  * Don't add calls to hasRawTextSupport.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@192035 91177308-0d34-0410-b5e6-96231b3b80d8
Add an additional pattern for BLCI since opt can turn (not (add x, 1)) into (sub -2, x).

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@192037 91177308-0d34-0410-b5e6-96231b3b80d8
Remove unneeded TBM intrinsics. The arithmetic/logical operation patterns are sufficient.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@192039 91177308-0d34-0410-b5e6-96231b3b80d8
Remove underscores from TBM instruction names for consistency with other instruction naming.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@192040 91177308-0d34-0410-b5e6-96231b3b80d8
Emit a better error when running out of registers on inline asm.

The most likely case where this error happens is when the user specifies
too many register operands. Don't make it look like an internal LLVM bug
when we can see that the error is coming from an inline asm instruction.
For other instructions we keep the "ran out of registers" error.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@192041 91177308-0d34-0410-b5e6-96231b3b80d8
Silencing an MSVC warning.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@192042 91177308-0d34-0410-b5e6-96231b3b80d8
Rename this feature to "cx16" to match gcc's flag name. Apparently these strings
are directly tied to the flag names in clang with no remapping in between?


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@192044 91177308-0d34-0410-b5e6-96231b3b80d8
Add TBM instructions to loading folding tables.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@192046 91177308-0d34-0410-b5e6-96231b3b80d8