Artem Chikin 0ddd1a9202 [Parseable Output] Emit parseable messages on failure in CompilerInstance.setup ...

FrontendTool sets up diagnostic infrastructure early and suppresses stdout diagnostics if frontend-parseable-output is enabled. It then calls `CompilerInstance.setup` which may fail - if it fails, we exit early. But that means we have not gotten a chance to emit parseable-output.

This change moves emission of the `began` parseable message to before `CompilerInstance.setup`, and ensures that a corresponding `finished` message is emitted if the setup fails.

Resolves rdar://93187783

2022-05-12 15:18:57 -07:00

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