Index: CMakeLists.txt
===================================================================
--- CMakeLists.txt
+++ CMakeLists.txt
@@ -234,13 +234,14 @@
 option(TEST_SUITE_BENCHMARKING_ONLY "Only run the benchmarking only subset" OFF)
 
 option(TEST_SUITE_COLLECT_STATS "Collect LLVM statistics" OFF)
+string(TOUPPER ${CMAKE_BUILD_TYPE} CMAKE_BUILD_TYPE_UPPER)
 if(TEST_SUITE_COLLECT_STATS)
   list(APPEND CFLAGS -save-stats=obj)
   list(APPEND CXXFLAGS -save-stats=obj)
   # Collect stats for LTO step too.
-  if (${CMAKE_C_FLAGS} MATCHES ".*-flto.*" AND
-      ${CMAKE_CXX_FLAGS} MATCHES ".*-flto.*")
-    list(APPEND LDFLAGS -save-stats=obj)
+  if ("${CMAKE_C_FLAGS} ${CMAKE_C_FLAGS_${CMAKE_BUILD_TYPE_UPPER}}" MATCHES ".*-flto.*" AND
+      "${CMAKE_CXX_FLAGS} ${CMAKE_CXX_FLAGS_${CMAKE_BUILD_TYPE_UPPER}}" MATCHES ".*-flto.*")
+      list(APPEND LDFLAGS -save-stats=obj)
   endif()
 endif()