George Balatsouras d10f173f34 [dfsan] Add -dfsan-fast-8-labels flag
This is only adding support to the dfsan instrumentation pass but not
to the runtime.

Added more RUN lines for testing: for each instrumentation test that
had a -dfsan-fast-16-labels invocation, a new invocation was added
using fast8.

Reviewed By: stephan.yichao.zhao

Differential Revision: https://reviews.llvm.org/D98734
2021-03-18 16:28:42 -07:00
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