[llvm-branch-commits] [llvm] [BOLT][Docs] Add instructions to run all tests. (PR #172847)

[Peter Waller via llvm-branch-commits]

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@@ -59,6 +59,34 @@ Start with cloning LLVM repo:
 `llvm-bolt` will be available under `bin/`. Add this directory to your path to
 ensure the rest of the commands in this tutorial work.
 
+### Testing changes during development
+
+During development, it is recommended to run both the in-tree tests (under
+[bolt/test](./test)) and the out-of-tree tests, which use binaries hosted in an
+[external](https://github.com/rafaelauler/bolt-tests) repository.
+
+Below are sample instructions to run both test suites. You may need to define
+additional CMake variables. Can also use the [docker-tests](./utils/docker-tests/Dockerfile) Dockerfile.
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peterwaller-arm wrote:

Grammar could be improved.

You could say:

> The [docker-tests](./utils/docker-tests/Dockerfile) Dockerfile is provided which is another route to get a known good testing environment.

https://github.com/llvm/llvm-project/pull/172847