[PATCH] D113447: [sancov] add tracing for loads and store

[Kostya Serebryany via Phabricator via cfe-commits]

kcc created this revision.
kcc added a reviewer: morehouse.
Herald added subscribers: ormris, dexonsmith, dang, hiraditya.
kcc requested review of this revision.
Herald added projects: clang, Sanitizers, LLVM.
Herald added subscribers: llvm-commits, Sanitizers, cfe-commits.

add tracing for loads and stores.

The primary goal is to have more options for data-flow-guided fuzzing,
i.e. use data flow insights to perform better mutations or more agressive corpus expansion.
But the feature is general puspose, could be used for other things too.

Pipe the flag though clang and clang driver, same as for the other SanitizerCoverage flags.
While at it, change some plain arrays into std::array.

Tests: clang flags test, LLVM IR test, compiler-rt executable test.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D113447

Files:
  clang/docs/SanitizerCoverage.rst
  clang/include/clang/Basic/CodeGenOptions.def
  clang/include/clang/Basic/CodeGenOptions.h
  clang/include/clang/Driver/Options.td
  clang/lib/CodeGen/BackendUtil.cpp
  clang/lib/Driver/SanitizerArgs.cpp
  clang/test/Driver/autocomplete.c
  clang/test/Driver/fsanitize-coverage.c
  compiler-rt/test/sanitizer_common/TestCases/sanitizer_coverage_trace_loads_stores.cpp
  llvm/include/llvm/Transforms/Instrumentation.h
  llvm/lib/Transforms/Instrumentation/SanitizerCoverage.cpp
  llvm/test/Instrumentation/SanitizerCoverage/trace-loads-stores.ll

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