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So all files in libFirm do this consistently

so external users can set their own opcode functions.

Get away from the strange set_default_XXX_op style and instead let the
code modules register their node ops directly.

The opcode list was a member of irprog before which wasn't really
handled consistently. Also make sure opcodes are properly freed at
ir_finish().

They are reserved in ANSI-C so instead of _XXX we use XXX_ now.

add unknown_jump opflag for the special case of a jump where we can't directly influence the destination and can't predict/change them

[r27762]

- remove a bunch of code which unexpectedly dependent on current_ir_graph being
  set to something
- fix unnecessary double creation of backedge arrays in some cases

[r27265]

CSE neutral to its users, i.e. op(..., x, ...) ~ op(..., y, ...) if x and y are both neutral.
Setting this property to ia32_ProduceVal nodes allow to CSE nodes that differ in ProduceVals only (which themself NEVER are cse'd).
This "fixes" divmod.

[r26981]

[r22889]

[r22725]

[r19748]

[r17143]

- renamed op_pin_state field to pin_state (was probaly refactored wrong)
- improved doxygen comments

[r16830]

[r16828]

- extend backend generator to support custom irop data
- cleanup and streamline transform code in ia32
- Improve handling of AddAM vs. Add used in AM expressions

[r16254]

[r15042]

[r14961]

[r14548]

[r14265]

Fixed Proj(X_regular) node dumping.

[r14188]

[r13522]

[r13510]

[r8534]

[r8311]

[r7998]

[r7803]

[r7572]

[r7571]

[r7258]

[r7254]

get_op_ops() added

[r6817]

[r6743]

[r6624]

[r6615]