tree cc25db980b37b98c6df46d54f8a5e3e244513798
parent c5ec0bf2210efe4dd54ffce3faa952d1c743e572
author Kostya Serebryany <kcc@google.com> 1636422756 -0800
committer Copybara-Service <copybara-worker@google.com> 1636497443 -0800

[sancov] add tracing for loads and store

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.

Reviewed By: morehouse

Differential Revision: https://reviews.llvm.org/D113447

GitOrigin-RevId: b7f3a4f4fa148dd6c1c3df828c6990d7e91b1731