Improve documentation of Hlo input formats for Hlo runner.

PiperOrigin-RevId: 575489893

Author: tensorflower-gardener

xla/service/hlo_parser.h

@@ -29,9 +29,6 @@ limitations under the License.
 
 namespace xla {
 
-// For details about the syntax accepted by this parser, see
-// g3doc/hlo_parser.md.
-
 // Given a string in the HloModule::ToString() format, parses the string and
 // creates a HloModule with the given config.
 // Note: Tests derived from HloTestBase should use

xla/tools/multihost_hlo_runner/functional_hlo_runner.h

@@ -40,9 +40,9 @@ namespace xla {
 
 // Supported input formats for the input HLO module.
 enum class InputFormat {
-  kText,                 // Text format.
-  kProtoText,            // Protobuf text format.
-  kProtoBinary,          // Protobuf binary format.
+  kText,                 // Text format returned by HloModule::ToString().
+  kProtoText,            // Protobuf text format of an xla::HloProto message.
+  kProtoBinary,          // Protobuf binary format of an xla::HloProto message.
   kSnapshotProtoBinary,  // HloSnapshot protobuf binary format. Can be dumped by
                          // TensorFlow by setting the environment variable
                          // xla_dump_hlo_snapshots.