[PATCH] D139811: sanmd: improve precision of UAR analysis

[Dmitry Vyukov via Phabricator via llvm-commits]

dvyukov created this revision.
dvyukov added a reviewer: melver.
Herald added subscribers: Enna1, hiraditya.
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dvyukov requested review of this revision.
Herald added projects: Sanitizers, LLVM.
Herald added subscribers: llvm-commits, Sanitizers.

Only mark functions that have address-taken locals
as requiring UAR checking.

On a large internal app this reduces number of marked functions
from 78441 to 66618. Mostly small, trivial getter/setter-type
functions are unmarked, but also some amount of larger
number-crunching-type functions are unmarked as well.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D139811

Files:
  compiler-rt/test/metadata/covered.cpp
  compiler-rt/test/metadata/uar.cpp
  llvm/lib/Transforms/Instrumentation/SanitizerBinaryMetadata.cpp

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