Index: cfe/trunk/test/lit.cfg
===================================================================
--- cfe/trunk/test/lit.cfg
+++ cfe/trunk/test/lit.cfg
@@ -532,3 +532,6 @@
 macOSSDKVersion = lit.util.findPlatformSdkVersionOnMacOS(config, lit_config)
 if macOSSDKVersion is not None:
     config.available_features.add('macos-sdk-' + macOSSDKVersion)
+
+if config.enable_abi_breaking_checks == "1":
+    config.available_features.add('abi-breaking-checks')
Index: cfe/trunk/test/lit.site.cfg.in
===================================================================
--- cfe/trunk/test/lit.site.cfg.in
+++ cfe/trunk/test/lit.site.cfg.in
@@ -24,6 +24,7 @@
 config.enable_shared = @ENABLE_SHARED@
 config.enable_backtrace = @ENABLE_BACKTRACES@
 config.host_arch = "@HOST_ARCH@"
+config.enable_abi_breaking_checks = "@LLVM_ENABLE_ABI_BREAKING_CHECKS@"
 
 # Support substitution of the tools and libs dirs with user parameters. This is
 # used when we can't determine the tool dir at configuration time.