This is the conservative and fast solution. We would get better results
if we would follow all Sync predecessors and ensure there is a store on
all of them (or after a join point).

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

cleanup: Remove pointless assert(is_${NODE}(x)) just before get_${NODE}_${FOO}(x), which do the same assert.

The functions are documented in the header already.

Performing it as localopt was hairy as the optimisation dependet on
correct iredges values which were misleading/wrong during construction
of new stuff.

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.

Noone was really using the return values anyway. This change makes the
API more consistent.

graph_properties are things that a transformation may destroy but which
can be easily recalculated.

graph_constraints are set after lowering phases have been running and
forbid certain constructs that no (later) transformation is allowed to construct

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 part of the initiative to move object-orientation support stuff
out of libfirm into liboo

They have been unnecessary aliases for is_SymConst_addr_ent() and
get_SymConst_entity().

The new interface uses no complicated callbacks anymore, but is a simple
ir_node* -> void* nodemap. Adapted all users of ir_phase for this.

some were missing anyway and nobody is using the global declarations anyway

Converted: ifconv, boolopt, combo, fpvrp, ldst, code placement,
jumpthreading, deconv, parallelize mem, loop, scalar replacement,
cfopt.

Load-Store-Opt now shifts constant loads from bitfields accordingly.