message: Add fexceptions to tests which need it
  Test Plan: All tests now pass with gcc
  Reviewers: davidn
diff: @@ -223,6 +223,9 @@ cc_library(
  tf_cc_test(
  name = "graph_compile_io_map_test",
  srcs = ["tests/graph_compile_io_map_test.cc"],
  + extra_copts = [
  + "-fexceptions",
  + ],
  deps = [
  ":poplar_lib",
  "//tensorflow/compiler/xla/service:hlo_matchers",
  @@ -233,6 +236,9 @@ tf_cc_test(
  tf_cc_test(
  name = "conversions_test",
  srcs = ["tests/conversions_test.cc"],
  + extra_copts = [
  + "-fexceptions",
  + ],
  deps = [
  ":poplar_lib",
  "//tensorflow/compiler/xla/service:hlo_matchers",
  