[test-suite] Supress warnings of missing reference output files using a default reference.

[asbirlea]

Summary

For the Bitcode tests, there is a large number of tests that do not have or need a reference file, leading to a warning for each test.
Yet, it's still cleaner to use the same methods in SingleMulti.cmake which trigger the warning.
Attempting to bypass this by adding a default reference which can apply to a large number of tests.
Alternative suggestions on addressing this are welcome.

[mehdi_amini]

There is a bunch of if(NOT DEFINED ... in this CMake file, can this be used to add a new variable and test with If(NOT DEFINED NO_REFERENCE_OUTPUT) (or similar)?

[asbirlea]

I like that idea a lot more, I'll update the patch.

[asbirlea]

Update patch to set (and check) a variable, for tests with no reference required.

[mehdi_amini]

Unless @MatzeB objects, that looks fine to me.

[asbirlea]

Thanks, I'll wait until tomorrow, in case there are objections.

test-suite/trunk/Bitcode/Regression/CMakeLists.txt

+set(NO_REFERENCE_OUTPUT true)
 if(ARCH STREQUAL "x86")
   add_subdirectory(vector_widen)
 endif()

test-suite/trunk/Bitcode/simd_ops/CMakeLists.txt

+set(NO_REFERENCE_OUTPUT true)
 file(GLOB uosources ${CMAKE_CURRENT_SOURCE_DIR}/${ARCH}_tests/*.bc)
 SET_SOURCE_FILES_PROPERTIES(${uosources} PROPERTIES LANGUAGE CXX)
 file(GLOB scalar_sources ${CMAKE_CURRENT_SOURCE_DIR}/${ARCH}_scalar_tests/*.bc)
 SET_SOURCE_FILES_PROPERTIES(${scalar_sources} PROPERTIES LANGUAGE CXX)
 SET_SOURCE_FILES_PROPERTIES(${CMAKE_CURRENT_SOURCE_DIR}/simd_op_check_runtime.bc PROPERTIES LANGUAGE CXX)
 
 list(APPEND LDFLAGS -lpthread -ldl)
 

test-suite/trunk/cmake/modules/SingleMultiSource.cmake

if(SMALL_PROBLEM_SIZE)
       set(KEY small)
     elseif(LARGE_PROBLEM_SIZE)
       set(KEY large)
     else()
       set(KEY)
     endif()
 
     # Pick the best reference output based on "programname.reference_output".
+    if(NOT DEFINED NO_REFERENCE_OUTPUT)
       if(EXISTS ${CMAKE_CURRENT_SOURCE_DIR}/${name}.reference_output.${ENDIAN}-endian.${KEY})
         set(REFERENCE_OUTPUT ${CMAKE_CURRENT_SOURCE_DIR}/${name}.reference_output.${ENDIAN}-endian.${KEY})
       elseif(EXISTS ${CMAKE_CURRENT_SOURCE_DIR}/${name}.reference_output.${KEY})
         set(REFERENCE_OUTPUT ${CMAKE_CURRENT_SOURCE_DIR}/${name}.reference_output.${KEY})
       elseif(EXISTS ${CMAKE_CURRENT_SOURCE_DIR}/${name}.reference_output.${ENDIAN}-endian)
         set(REFERENCE_OUTPUT ${CMAKE_CURRENT_SOURCE_DIR}/${name}.reference_output.${ENDIAN}-endian)
       elseif(EXISTS ${CMAKE_CURRENT_SOURCE_DIR}/${name}.reference_output)
         set(REFERENCE_OUTPUT ${CMAKE_CURRENT_SOURCE_DIR}/${name}.reference_output)
       else()
         message("-- No reference output found for test ${name}")
       endif()
+    endif()
 
     set(DIFFPROG ${CMAKE_BINARY_DIR}/tools/fpcmp)
     if(DEFINED FP_TOLERANCE)
       set(DIFFPROG "${DIFFPROG} -r ${FP_TOLERANCE}")
     endif()
     if(DEFINED FP_ABSTOLERANCE)
       set(DIFFPROG "${DIFFPROG} -a ${FP_ABSTOLERANCE}")
     endif()