[PATCH] D97483: [dfsan] Propagate origins for callsites

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

stephan.yichao.zhao created this revision.
stephan.yichao.zhao added a reviewer: morehouse.
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 is a part of https://reviews.llvm.org/D95835.

Each customized function has two wrappers. The
first one dfsw is for the normal shadow propagation. The second one dfso is used
when origin tracking is on. It calls the first one, and does additional
origin propagation. Which one to use can be decided at instrumentation
time. This is to ensure minimal additional overhead when origin tracking
is off.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D97483

Files:
  compiler-rt/lib/dfsan/dfsan.syms.extra
  llvm/lib/Transforms/Instrumentation/DataFlowSanitizer.cpp
  llvm/test/Instrumentation/DataFlowSanitizer/origin_abilist.ll
  llvm/test/Instrumentation/DataFlowSanitizer/origin_call.ll

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