message: modify Log to gry
diff: @@ -287,10 +287,10 @@ TEST_F(AutoMixedPrecisionTest, Simple) {
  Output clr2 = ops::Relu(s.WithOpName("clr2"), gry1);
  Output wht1 = ops::MatMul(s.WithOpName("wht1"), clr2, clr2);
  Output clr3 = ops::Relu(s.WithOpName("clr3"), wht1);
  - Output blk2 = ops::Log(s.WithOpName("blk2"), clr3);
  - Output clr4 = ops::Relu(s.WithOpName("clr4"), blk2);
  - Output blk3 = ops::SparseMatMul(s.WithOpName("blk3"), clr4, clr4);
  - Output clr5 = ops::Relu(s.WithOpName("clr5"), blk3);
  + Output gry2 = ops::Log(s.WithOpName("gry2"), clr3);
  + Output clr4 = ops::Relu(s.WithOpName("clr4"), gry2);
  + Output blk2 = ops::SparseMatMul(s.WithOpName("blk2"), clr4, clr4);
  + Output clr5 = ops::Relu(s.WithOpName("clr5"), blk2);
  Output fetch = ops::Identity(s.WithOpName("fetch"), clr5);
  GrapplerItem item;
  @@ -313,10 +313,10 @@ TEST_F(AutoMixedPrecisionTest, Simple) {
  EXPECT_EQ(output_view.GetNode("clr2")->attr().at("T").type(), DT_HALF);
  EXPECT_EQ(output_view.GetNode("wht1")->attr().at("T").type(), DT_HALF);
  EXPECT_EQ(output_view.GetNode("clr3")->attr().at("T").type(), DT_HALF);
  - EXPECT_EQ(output_view.GetNode("blk2")->attr().at("T").type(), DT_FLOAT);
  + EXPECT_EQ(output_view.GetNode("gry2")->attr().at("T").type(), DT_FLOAT);
  EXPECT_EQ(output_view.GetNode("clr4")->attr().at("T").type(), DT_FLOAT);
  - EXPECT_EQ(output_view.GetNode("blk3")->attr().at("Ta").type(), DT_FLOAT);
  - EXPECT_EQ(output_view.GetNode("blk3")->attr().at("Tb").type(), DT_FLOAT);
  + EXPECT_EQ(output_view.GetNode("blk2")->attr().at("Ta").type(), DT_FLOAT);
  + EXPECT_EQ(output_view.GetNode("blk2")->attr().at("Tb").type(), DT_FLOAT);
  EXPECT_EQ(output_view.GetNode("clr5")->attr().at("T").type(), DT_FLOAT);
  auto tensors = EvaluateNodes(output, item.fetch);
  