Add experimental/ to .bazelignore and update docs.
Closes https://github.com/google/iree/pull/729
COPYBARA_INTEGRATE_REVIEW=https://github.com/google/iree/pull/729 from ScottTodd:ignore-experimental c5292645b1b3024c1eb60d174cd7c669837fad2d
PiperOrigin-RevId: 294303047
diff --git a/.bazelignore b/.bazelignore
index 7dee7e2..96fc1a2 100644
--- a/.bazelignore
+++ b/.bazelignore
@@ -12,11 +12,16 @@
# See the License for the specific language governing permissions and
# limitations under the License.
-# TODO(scotttodd): enable when Dawn HAL implementation is functional
-iree/hal/dawn
-iree/tools/web
+# Ignore 'experimental' folders. These builds are not regularly maintained.
+# If you wish to build/run a target under experimental/, you must remove this
+# line from this file.
+experimental
# Ignore third_party directories which contain BUILD files so that recursive
# from root works.
third_party
build_tools/bazel/third_party_import/llvm-project/overlay
+
+# TODO(scotttodd): enable when Dawn HAL implementation is functional
+iree/hal/dawn
+iree/tools/web
diff --git a/experimental/README.md b/experimental/README.md
index 57621d7..21f05da 100644
--- a/experimental/README.md
+++ b/experimental/README.md
@@ -1,8 +1,8 @@
This folder contains experimental subprojects related to IREE and MLIR. These
-are not yet stable and supported and may not always be working. We ensure the
-build bots are green for the configurations the targets support but would prefer
-not to take on too much maintence overhead for things unless they are on a path
-to leaving experimental. Please use forks of the repository for purely
+are not yet stable and supported and may not always be working. We may keep the
+build bots green for certain configurations but would prefer not to take on too
+much maintence overhead for things unless they are on a path to leaving
+experimental. Please use forks of the repository for purely
experimental/personal work.
**NOTE**: not all projects require a cmake build. If you are adding a directory
