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[Frontend][Index] Add frontend option to skip indexing the stdlib (for test performance)

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Several tests related to indexing system modules were taking a considerable
amount of time (100+ seconds in the worst case) indexing the standard library.
This adds a frontend option to skip it and updates those tests to pass it.
This commit is contained in:
Nathan Hawes
2020-03-25 14:36:23 -07:00
parent 8b03b05f1d
commit a785fa6cee
9 changed files with 52 additions and 15 deletions
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4
include/swift/Option/FrontendOptions.td
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@@ -604,6 +604,10 @@ def external_pass_pipeline_filename : Separate<["-"], "external-pass-pipeline-fi
def index_system_modules : Flag<["-"], "index-system-modules">,
HelpText<"Emit index data for imported serialized swift system modules">;
def index_ignore_stdlib :
Flag<["-"], "index-ignore-stdlib">,
HelpText<"Avoid emitting index data for the standard library.">;
def dump_interface_hash : Flag<["-"], "dump-interface-hash">,
HelpText<"Parse input file(s) and dump interface token hash(es)">,
ModeOpt;