Mention Checker tests in `test/README.md`.
Test: Render `test/README.md` as HTML and check the output manually
Change-Id: I6c4d5d02fb3418692fb7e33e29f6d4d3aa29dcf4
diff --git a/test/README.md b/test/README.md
index 74fbead..da9a1f1 100644
--- a/test/README.md
+++ b/test/README.md
@@ -58,6 +58,20 @@
art/test/testrunner/testrunner.py --help
```
+### Checker tests
+
+Some ART run-tests, known as "Checker tests", perform additional checks on ART's
+compiler. They are identified by their name, which match the
+`^[0-9]+-checker-.*` regular expression (e.g. `004-checker-UnsafeTest18`).
+
+Checker assertions are annotations in a run-test's (Java and Smali) source files
+verifying the behavior of the ART compiler when compiling the corresponding Dex
+code. They are checked by the `checker` tool (see [directory
+`art/tools/checker`](https://cs.android.com/android/platform/superproject/+/master:art/tools/checker/))
+against a c1visualizer-style (`.cfg`) file emitted by `dex2oat`, containing
+control-flow graphs (CFGs) for compiled methods at each step (pass) in the
+compiler's pipeline, as well as the emitted assembly code.
+
## ART gtests
ART gtests are written in C++ using the [Google