[flang-commits] [flang] [flang] Move parser invocations into ParserActions (PR #130309)

[Tom Eccles via flang-commits]

https://github.com/tblah commented:

Thank you for this @mrkajetanp and welcome to flang!

Our intention here is to make flang a little eaiser to build on machines with less memory per CPU core. This change partitions one of the most difficult to compile translation units into more manageable chunks. Furthermore, this should speed up incremental re-builds: for example, if flang is built fully, then a change is made to flang's parse tree, now only ParserActions will have to be rebuilt (which is much faster than the older FrontendActions.cpp).

LGTM but please wait for approval from other reviewers.

https://github.com/llvm/llvm-project/pull/130309