Fix XFAIL

Author: tstellar

.github/workflows/premerge.yaml

@@ -137,8 +137,7 @@ jobs:
                 -DCMAKE_CXX_COMPILER_LAUNCHER=ccache
 
           # XFAIL some tests that are failing:
-          export LIT_XFAIL="Target/SPIRV/./SPIRVTests/SPIRVAPITest/checkTranslateAllExtensions;Target/SPIRV/./SPIRVTests/SPIRVAPITest/checkTranslateExtensionError;Target/SPIRV/./SPIRVTests/SPIRVAPITest/checkTranslateUnknownExtensionByOpts;Target/SPIRV/./SPIRVTests/SPIRVAPITest/checkTranslateWrongExtensionByArg;Target/SPIRV/./SPIRVTests/SPIRVAPITest/checkTranslateWrongExtensionByOpts"
-          export LIT_FILTER=SPIRVTests
+          export LIT_XFAIL="LLVM-Unit :: Target/SPIRV/./SPIRVTests/SPIRVAPITest/checkTranslateAllExtensions;LLVM-Unit :: Target/SPIRV/./SPIRVTests/SPIRVAPITest/checkTranslateExtensionError;LLVM-Unit :: Target/SPIRV/./SPIRVTests/SPIRVAPITest/checkTranslateUnknownExtensionByOpts;LLVM-Unit :: Target/SPIRV/./SPIRVTests/SPIRVAPITest/checkTranslateWrongExtensionByArg;LLVM-Unit :: Target/SPIRV/./SPIRVTests/SPIRVAPITest/checkTranslateWrongExtensionByOpts"
 
           # The libcxx tests fail, so we are skipping the runtime targets.
           ninja -C build  $mac_check_targets