Index: lib/CMakeLists.txt
===================================================================
--- lib/CMakeLists.txt
+++ lib/CMakeLists.txt
@@ -28,7 +28,6 @@
 endfunction()
 
 function(compiler_rt_build_sanitizer sanitizer)
-  string(TOUPPER ${sanitizer} sanitizer_uppercase)
   string(TOLOWER ${sanitizer} sanitizer_lowercase)
   list(FIND COMPILER_RT_SANITIZERS_TO_BUILD ${sanitizer_lowercase} result)
   if(NOT ${result} EQUAL -1)
Index: test/CMakeLists.txt
===================================================================
--- test/CMakeLists.txt
+++ test/CMakeLists.txt
@@ -35,6 +35,24 @@
   endif()
 endif()
 
+function(compiler_rt_test_runtime runtime)
+  string(TOUPPER ${runtime} runtime_uppercase)
+  if(COMPILER_RT_HAS_${runtime_uppercase})
+    add_subdirectory(${runtime})
+    foreach(directory ${ARGN})
+      add_subdirectory(${directory})
+    endforeach()
+  endif()
+endfunction()
+
+function(compiler_rt_test_sanitizer sanitizer)
+  string(TOLOWER ${sanitizer} sanitizer_lowercase)
+  list(FIND COMPILER_RT_SANITIZERS_TO_BUILD ${sanitizer_lowercase} result)
+  if(NOT ${result} EQUAL -1)
+    compiler_rt_test_runtime(${sanitizer} ${ARGN})
+  endif()
+endfunction()
+
 # Run sanitizer tests only if we're sure that clang would produce
 # working binaries.
 if(COMPILER_RT_CAN_EXECUTE_TESTS)
@@ -42,49 +60,25 @@
     add_subdirectory(builtins)
   endif()
   if(COMPILER_RT_BUILD_SANITIZERS)
-    if(COMPILER_RT_HAS_ASAN)
-      add_subdirectory(asan)
-    endif()
-    if(COMPILER_RT_HAS_DFSAN)
-      add_subdirectory(dfsan)
-    endif()
-    if (COMPILER_RT_HAS_INTERCEPTION)
-      add_subdirectory(interception)
-    endif()
-    if(COMPILER_RT_HAS_LSAN)
-      add_subdirectory(lsan)
-    endif()
-    if(COMPILER_RT_HAS_MSAN)
-      add_subdirectory(msan)
-    endif()
-    if(COMPILER_RT_HAS_PROFILE)
-      add_subdirectory(profile)
-    endif()
-    if(COMPILER_RT_HAS_SANITIZER_COMMON)
-      add_subdirectory(sanitizer_common)
-    endif()
-    if(COMPILER_RT_HAS_TSAN)
-      add_subdirectory(tsan)
-    endif()
-    if(COMPILER_RT_HAS_UBSAN)
-      add_subdirectory(ubsan)
-    endif()
+    compiler_rt_test_runtime(interception)
+
+    compiler_rt_test_runtime(lsan)
     # CFI tests require diagnostic mode, which is implemented in UBSan.
-    if(COMPILER_RT_HAS_UBSAN)
-      add_subdirectory(cfi)
-    endif()
-    if(COMPILER_RT_HAS_SAFESTACK)
-      add_subdirectory(safestack)
-    endif()
-    if(COMPILER_RT_HAS_ESAN)
-      add_subdirectory(esan)
-    endif()
-    if(COMPILER_RT_HAS_SCUDO)
-      add_subdirectory(scudo)
-    endif()
+    compiler_rt_test_runtime(ubsan cfi)
+    compiler_rt_test_runtime(sanitizer_common)
+
+    compiler_rt_test_sanitizer(asan)
+    compiler_rt_test_sanitizer(dfsan)
+    compiler_rt_test_sanitizer(msan)
+    compiler_rt_test_sanitizer(tsan)
+    compiler_rt_test_sanitizer(safestack)
+    compiler_rt_test_sanitizer(esan)
+    compiler_rt_test_sanitizer(scudo)
+
+    compiler_rt_test_runtime(profile)
   endif()
-  if(COMPILER_RT_BUILD_XRAY AND COMPILER_RT_HAS_XRAY)
-    add_subdirectory(xray)
+  if(COMPILER_RT_BUILD_XRAY)
+    compiler_rt_test_runtime(xray)
   endif()
 endif()