The opt_manage framework didn't really do much except assuring that some
analysis info is computed before a pass starts. We can achieve this
simpler by providing an assure_irg_properties function.
This commit also fixes some places where analysis info was potentially
not invalidated before.

This makes it consistent with other firm analyse functions. Also removes
the unnecessary return value.

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

build_edges_walker calls get_block_n on block preds, possibly consing
and hashing a node which init_lh_walker couldn't reach via
irg_walk_anchors.

This fixes a crash I see when compiling Postgres.

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 get_n in the foreach loop is a macro and not a use of the function.

Simplify: if (!irn_visited(x)) { mark_irn_visited(x); ... }  ->  if (!irn_visited_else_mark(x)) { ... }.

[r28435]

[r28272]

Note that this is an ugly change because ALL index variables used inside
bitset_foreach() MUST be switched to size_t now, or the magical

elm != (size_t) -1;

will fail :-(

[r28199]

[r28127]

[r28116]

[r28020]

differentiate between Bad and Deleted (because of exchange) nodes, this avoid some invalid memory accesses when trying to get irg from a Bad node

[r28019]

[r27944]

[r27836]

[r27631]

[r27277]

[r27195]

[r27153]

[r27145]

[r26958]

- if a node was built with edges disabled gets dead, but is revived by CSE when edges are enabled, it had NO edges
- tries to keep track of such dead nodes ...

[r26954]

[r26953]

[r26529]

[r26424]

[r26408]

  on stdlib.h
- move doxygen comment to header

[r24014]

[r23176]