As a followup to my previous commits, this is an implementation of a
single clause, in this case the 'default' clause. This implements all
semantic analysis for it on compute clauses, and continues to leave it
rejected for all others (some as 'doesnt appertain', others as 'not
implemented' as appropriate).
This also implements and tests the TreeTransform as requested in the
previous patch.
While working on a followup patch, I discovered we didn't
serialize/deserialize the Compute Context properly, so this patch fixes
it, then adds a PCH mode to the ast test.
So far, all the work we've done for compute constructs has only used
'parallel'. This patch does the work to enable the same logic for
'serial' and 'kernels' constructs as well, since they are the same
semantic behavior.
This patch Implements AST node creation and appertainment enforcement
for 'parallel', as well as changes the 'not implemented' messages to be
more specific. It does not deal with clauses/clause legality, nor a few
of the other rules from the standard, but this gets us most of the way
for a framework for future construct implementation.
