Merge pull request #449 from Xilinx/jrickert.perf_benchmark

Only include perf tests if LLVM_INCLUDE_BENCHMARKS is enabled, as it has dependencies that are only available if this option is set

Author: jorickert

test/CMakeLists.txt

@@ -74,6 +74,8 @@ add_subdirectory(numerical)
 add_subdirectory(backend-cpp)
 add_subdirectory(unit)
 add_subdirectory(compilerlib)
-add_subdirectory(perf)
+if(LLVM_INCLUDE_BENCHMARKS)
+  add_subdirectory(perf)
+endif()
 add_subdirectory(multiple-models)