[PATCH] D105128: [dfsan] Expose dfsan_get_track_origins to get origin tracking status

[stephan.yichao.zhao via Phabricator via llvm-commits]

stephan.yichao.zhao created this revision.
stephan.yichao.zhao added a reviewer: browneee.
Herald added a subscriber: hiraditya.
stephan.yichao.zhao requested review of this revision.
Herald added projects: Sanitizers, LLVM.
Herald added subscribers: llvm-commits, Sanitizers.

This allows application code checks if origin tracking is on before
printing out traces.

-dfsan-track-origins can be 0,1,2.
The current code only distinguishes 1 and 2 in compile time, but not at runtime.
Made runtime distinguish 1 and 2 too.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D105128

Files:
  compiler-rt/lib/dfsan/dfsan.cpp
  compiler-rt/lib/dfsan/done_abilist.txt
  compiler-rt/test/dfsan/dfsan_get_track_origins.c
  llvm/lib/Transforms/Instrumentation/DataFlowSanitizer.cpp
  llvm/test/Instrumentation/DataFlowSanitizer/basic.ll

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