The array type is fine, because it is the containing type, which is used for TBAA.
This partially reverts commit 1786345c.

After spilling this is done in the backend.

This unbreaks the backend option 'profilegenerate'.

This partially unbreaks the backend option 'profilegenerate'.

* 'get_atomic_ent_value()' is a wrapper, which tries to unify the different kind of initalizers by wastefully creating nodes on demand.
  It had only a single user, which tried to use it for method entities, which does not work anymore (see 3rd bullet point).
* 'set_atomic_ent_value()' is a thin and unnecessary wrapper to set a const node initializer.
* 'is_atomic_entity()' classifies entities having (among primitive and pointer types) method type as having an atomic initializer.
  They do not for a long time (was an address of itself).
  Except for the two functions above, this function is unused.
* 'Atomic' is a misnomer and should rather be 'scalar'.

Now you only pass a name prefix and it automatically adds a ".%u".

The length is now set on creation.
Neither length nor element type can be changed later on.

cleanup: Use 'new_global_entity()' instead of 'new_entity()' + 'set_entity_visibility()' + 'set_entity_linkage()'.

For stabs debug info it was used to suppress debug info, so set ir_visibility_private instead.

This unifies several locally defined macros.

The initial block is not immature after new_ir_graph() anymore for a long time.
The end block is matured automatically by irg_finalize_cons().

This is unnecessary, because all nodes are created using new_r_*.

Previously a Bad node was returned which could hide problems and more
importantly you create new nodes (the BadBB) in an operation that apparently
only queries the graph.

Deduce the mode automatically from the given entity.

This removes the strange entity/type duality and we get rid of union symconst_symbol.

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.