message: Fix some nits in cpu_literal_caching_test that I noticed after submission
diff: @@ -20,9 +20,9 @@ limitations under the License.
  namespace xla {
  namespace cpu {
  namespace {
  -class CpuExternalConstantsTest : public CpuCodegenTest {};
  +class CpuDuplicateConstantsTest : public CpuCodegenTest {};
  -TEST_F(CpuExternalConstantsTest, RepeatedArrayConstants) {
  +TEST_F(CpuDuplicateConstantsTest, RepeatedArrayConstants) {
  // We use a while loop here to force the two constant HloInstructions to be in
  // different computations. Otherwise the HLO optimizer itself CSEs them.
  const string hlo_text = R"(
  @@ -56,6 +56,10 @@ ENTRY main {
  }
  )";
  + // TODO(b/78879738): The fake "f32[] constant(1)" root is only needed to work
  + // around b/78879738. Once b/78879738 is fixed, we can set one of the
  + // outfeeds as the root.
  +
  string filecheck_pattern = R"(
  CHECK: private constant [2 x [3 x [2 x float]]]
  CHECK-NOT: private constant [2 x [3 x [2 x float]]]
  @@ -73,7 +77,7 @@ CHECK-NOT: private constant [2 x [3 x [2 x float]]]
  /*match_optimized_ir=*/false);
  }
  -TEST_F(CpuExternalConstantsTest, RepeatedTupleConstants) {
  +TEST_F(CpuDuplicateConstantsTest, RepeatedTupleConstants) {
  // We use a while loop here to force the two constant HloInstructions to be in
  // different computations. Otherwise the HLO optimizer itself CSEs them.
  const string hlo_text = R"(
  @@ -101,6 +105,10 @@ ENTRY main {
  }
  )";
  + // TODO(b/78879738): The fake "f32[] constant(1)" root is only needed to work
  + // around b/78879738. Once b/78879738 is fixed, we can set one of the
  + // outfeeds as the root.
  +
  string filecheck_pattern = R"(
  CHECK: private constant [2 x float]
  CHECK: private constant [2 x [1 x float]]
  