the templates are now friendlier for usage outside of libfirm

It has been empty for nearly all systems. People who used to put stuff
in config.h can still create a config.h on their own and inject
-include (gcc) or /FI (msvc) into their CPPFLAGS.

structs are bad in a library API. We provide setter functions for the
fields now.

You should specify the pinned attribute when calling new_ir_op and not
change it later.

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

This means floatingpoint calculation in a firm graph must be performed
in the mode specified (and may not be performed in a wider mode as
before).

so external users can set their own opcode functions.

You can still attach NoMem if no memory input is present.
This makes it more consistent with the Call node and fixes failing
get_ASM_mem in case of no memory input.

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().

public functions are already documented in their headers, no need to
repeat the comment at the definition site.

memops are nodes that have memory inputs, you can generically query them
for their memory input. We can also get rid of get_fragile_op_mem in
favor of get_memop_mem.

This is the new way of handling switch-jumps. The node contains a table
which maps (ranges of) input values to proj numbers. Compared to a
Cond-node this results in a clean consecutive sequence of Proj numbers
(no searching for a free number for the default_pn anymore) and allows
factoring multiple cases jumping to the same block in a single Proj
(though we still need the optimisation in cfopt for that).

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

They're adding more noise than they provide gain in readability. They
also make extra work to keep up to date.

- The pns of X_regular and X_except are annotated in the opcode now.
- The memory input is annotated in the opcode now
- only nodes with X_regular, X_except are marked fragile

[r28127]

[r28061]

[r27836]

[r27762]

[r27328]