Add make targets for LLD test directories

[ncw]

Summary

Add ability to run "ninja check-lld-wasm" to run specific tests, allowing faster turnaround while developing

---

I don't have commit access - assuming this change is OK, could someone commit it for me? Thanks.

[ruiu]

I didn't test this patch, but I think that the idea of accepting check-lld-{wasm,COFF,ELF} is fine.

[smeenai]

I like this idea.

[ncw]

It's been a while since I opened this - I'll land it soon if there are no objections.

[ruiu]

LGTM

lld/trunk/test/CMakeLists.txt

 
 add_lit_testsuite(check-lld "Running lld test suite"
   ${CMAKE_CURRENT_BINARY_DIR}
   PARAMS lld_site_config=${CMAKE_CURRENT_BINARY_DIR}/lit.site.cfg
        lld_unit_site_config=${CMAKE_CURRENT_BINARY_DIR}/Unit/lit.site.cfg
   DEPENDS ${LLD_TEST_DEPS}
   )
 
+add_lit_testsuites(LLD ${CMAKE_CURRENT_SOURCE_DIR}
+  PARAMS lld_site_config=${CMAKE_CURRENT_BINARY_DIR}/lit.site.cfg
+       lld_unit_site_config=${CMAKE_CURRENT_BINARY_DIR}/Unit/lit.site.cfg
+  DEPENDS ${LLD_TEST_DEPS}
+  )
+
 set_target_properties(check-lld PROPERTIES FOLDER "lld tests")
 
 # Add a legacy target spelling: lld-test
 add_custom_target(lld-test)
 add_dependencies(lld-test check-lld)
 set_target_properties(lld-test PROPERTIES FOLDER "lld tests")