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This first version should perform similar to the support in the ia32
backend, but needs more work to add amd64 specific immediate types.

Also adds a new INSN_MODE_INVALID for 0 to catch uninitialized values.

Further, do not spell it TEMPALTE (sic).

Just state the copyright and the project the files belong to. You can
then find the COPYING file for the whole project.

This was an odd convention from the past, there's no need for it
anymore.

[r27995]

amd64: Added Load and FrameAddr transformation. And fixed some corruption bugs w.r.t. node attribute handling.

[r27666]

[r27660]

[r27658]

[r27495]

[r27454]

[r26317]

[r25129]

[r17143]

- "Fix" TEMPLATE backend
- Load TEMPLATE backend in bemodules
- fix ppc32 not scheduling alot of nodes

[r14319]

[r13566]

[r13508]

- Started working on flags

[r12716]

- Replace limit callback in register requirements with a simple bitset
- Fix backends, generators and the rest of the code for the change register
  requirements structure
- Eliminated the custom register_requirement structures in the backend, they
  are pointless now, use the normal arch_register_req_t
- Fix TEMPLATE backend
- Extract emitter framework from ia32 and provide generic header/code for it
- Port TEMPLATE backend to new emitter
- Extract gas specific emit stuff (declarations, sections) from ia32 backend
  and provide it as generic header/code. Make TEMPLATE backend use that
- Remove several FIRM_DBG_REGISTERs from functions which are called very often.
  Before we had millions of string hashtable lookups because of that. The
  prefered way is to have 1 static debug module per file and initialize it in
  the module constructor. No passing around in environment structs and in no
  case should you dynamically register it in single functions.

No more extra allocation needed, but must be last in the attribute structure