[XRay] [test-suite] Don't use llvm_multisource macro for XRay tests and use .test files

[eizan]

Summary

Fix up CMakeLists.txt and Add multiple .test files for test-suite/MicroBenchmarks/XRay/
Follow-up work as suggested by https://reviews.llvm.org/D32272#794759

[dberris]

Thanks @eizan -- but I'm afraid you're going to have to re-roll this with the llvm-commits mailing list in the subscribers list with the original patch. If you're doing this with arcanist, please remember to add llvm-commits as a subscriber (I don't know how to set that as a default though).

MicroBenchmarks/XRay/CMakeLists.txt

 check_cxx_compiler_flag(-fxray-instrument COMPILER_HAS_FXRAY_INSTRUMENT)
 if("${ARCH}" STREQUAL "x86" AND ${COMPILER_HAS_FXRAY_INSTRUMENT})
   file(COPY lit.local.cfg DESTINATION "${CMAKE_CURRENT_BINARY_DIR}")
 
-  list(APPEND CPPFLAGS -std=c++11 -Wl,--gc-sections -fxray-instrument)
-  set(Source retref-bench.cc)
-  list(APPEND LDFLAGS -fxray-instrument)
-  set(RUN_OPTIONS --benchmark_repetitions=10 --benchmark_report_aggregates_only=true)
-
-  set(PROG retref-bench)
-  llvm_multisource()
+  SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11 -Wl,--gc-sections -fxray-instrument")
+  SET(CMAKE_EXE_LINKER_FLAGS  "${CMAKE_EXE_LINKER_FLAGS} -fxray-instrument")
+  add_executable(retref-bench retref-bench.cc)
   target_link_libraries(retref-bench benchmark)
+
+  file(COPY retref-bench_BM_ReturnNeverInstrumented.test
+       DESTINATION "${CMAKE_CURRENT_BINARY_DIR}")
+  file(COPY retref-bench_BM_ReturnInstrumentedUnPatched.test
+       DESTINATION "${CMAKE_CURRENT_BINARY_DIR}")
+  file(COPY retref-bench_BM_ReturnInstrumentedPatchedThenUnpatched.test
+       DESTINATION "${CMAKE_CURRENT_BINARY_DIR}")
+  file(COPY retref-bench_BM_ReturnInstrumentedPatched.test
+       DESTINATION "${CMAKE_CURRENT_BINARY_DIR}")
+  file(COPY retref-bench_BM_RDTSCP_Cost.test
+       DESTINATION "${CMAKE_CURRENT_BINARY_DIR}")
+  file(COPY retref-bench_BM_ReturnInstrumentedPatchedWithLogHandler.test
+       DESTINATION "${CMAKE_CURRENT_BINARY_DIR}")
 endif()

MicroBenchmarks/XRay/retref-bench_BM_RDTSCP_Cost.test

+RUN: %S/retref-bench --benchmark_repetitions=10 --benchmark_report_aggregates_only=true --benchmark_filter=BM_RDTSCP_Cost

MicroBenchmarks/XRay/retref-bench_BM_ReturnInstrumentedPatched.test

+RUN: %S/retref-bench --benchmark_repetitions=10 --benchmark_report_aggregates_only=true --benchmark_filter=BM_ReturnInstrumentedPatched

MicroBenchmarks/XRay/retref-bench_BM_ReturnInstrumentedPatchedThenUnpatched.test

+RUN: %S/retref-bench --benchmark_repetitions=10 --benchmark_report_aggregates_only=true --benchmark_filter=BM_ReturnInstrumentedPatchedThenUnpatched

MicroBenchmarks/XRay/retref-bench_BM_ReturnInstrumentedPatchedWithLogHandler.test

+RUN: %S/retref-bench --benchmark_repetitions=10 --benchmark_report_aggregates_only=true --benchmark_filter=BM_ReturnInstrumentedPatchedWithLogHandler

MicroBenchmarks/XRay/retref-bench_BM_ReturnInstrumentedUnPatched.test

+RUN: %S/retref-bench --benchmark_repetitions=10 --benchmark_report_aggregates_only=true --benchmark_filter=BM_ReturnInstrumentedUnPatched

MicroBenchmarks/XRay/retref-bench_BM_ReturnNeverInstrumented.test

+RUN: %S/retref-bench --benchmark_repetitions=10 --benchmark_report_aggregates_only=true --benchmark_filter=BM_ReturnNeverInstrumented