Optimizing: Run gtests without creating the Runtime.

The only Optimizing test that actually needs a Runtime is
the ReferenceTypePropagationTest, so we make it subclass
CommonCompilerTest explicitly and change OptimizingUnitTest
to subclass CommonArtTest for the other tests.

On host, each test that initializes the Runtime takes ~220ms
more than without initializing the Runtime. For example, the
ConstantFoldingTest that has 10 individual tests previously
took over 2.2s to run but without the Runtime initialization
it takes around 3-5ms. On target, running 32-bit gtests on
taimen with run-gtests.sh (single-threaded) goes from
~28m47s to ~26m13s, a reduction of ~9%.

Test: m test-art-host-gtest
Test: run-gtests.sh
Change-Id: I43e50ed58e52cc0ad04cdb4d39801bfbae840a3d

1 files changed, 4 insertions, 1 deletions

diff --git a/compiler/optimizing/live_ranges_test.cc b/compiler/optimizing/live_ranges_test.cc
index 60f513ca48..bb8a4dc08e 100644
--- a/compiler/optimizing/live_ranges_test.cc
+++ b/compiler/optimizing/live_ranges_test.cc
@@ -28,12 +28,15 @@
 namespace art {
 
 class LiveRangesTest : public OptimizingUnitTest {
- public:
+ protected:
   HGraph* BuildGraph(const std::vector<uint16_t>& data);
+
+  std::unique_ptr<CompilerOptions> compiler_options_;
 };
 
 HGraph* LiveRangesTest::BuildGraph(const std::vector<uint16_t>& data) {
   HGraph* graph = CreateCFG(data);
+  compiler_options_ = CommonCompilerTest::CreateCompilerOptions(kRuntimeISA, "default");
   // Suspend checks implementation may change in the future, and this test relies
   // on how instructions are ordered.
   RemoveSuspendChecks(graph);