Jan Svoboda c12577c61d [clang][driver] Introduce new -fdriver-only flag ...

This patch introduces the new -fdriver-only flag which instructs Clang to only execute the driver logic without running individual jobs. In a way, this is very similar to -###, with the following differences:
 * it doesn't automatically print all jobs,
 * it doesn't avoid side effects (e.g. it will generate compilation database when -MJ is specified).

This flag will be useful in testing D121997.

Reviewed By: dexonsmith, egorzhdan

Differential Revision: https://reviews.llvm.org/D127408

2022-06-13 13:30:56 +02:00

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