[RFC][debuginfo-test] Rename debug-info lit tests for general purposes

Discussion thread: https://lists.llvm.org/pipermail/llvm-dev/2021-January/148048.html Move debuginfo-test into a subdirectory of a new top-level directory, called cross-project-tests. The new name replaces "debuginfo-test" as an LLVM project enabled via LLVM_ENABLE_PROJECTS. Differential Revision: https://reviews.llvm.org/D95339 Reviewed by: aprantl

Author: jh7370

README.md

@@ -5,7 +5,7 @@
 find_package(Python3 COMPONENTS Interpreter)
 
 add_llvm_executable(check-gdb-llvm-support
- llvm-prettyprinters/gdb/llvm-support.cpp
+ debuginfo-tests/llvm-prettyprinters/gdb/llvm-support.cpp
 )
 target_link_libraries(check-gdb-llvm-support PRIVATE LLVMSupport)
 
@@ -24,7 +24,7 @@ set(DEBUGINFO_TEST_DEPS
 
 if ("mlir" IN_LIST LLVM_ENABLE_PROJECTS)
  add_llvm_executable(check-gdb-mlir-support
- llvm-prettyprinters/gdb/mlir-support.cpp
+ debuginfo-tests/llvm-prettyprinters/gdb/mlir-support.cpp
  )
  target_include_directories(check-gdb-mlir-support PRIVATE
  ${LLVM_EXTERNAL_MLIR_SOURCE_DIR}/include
@@ -61,7 +61,7 @@ configure_lit_site_cfg(
  ${CMAKE_CURRENT_SOURCE_DIR}/lit.cfg.py
  )
 
-add_lit_testsuite(check-debuginfo "Running debug info integration tests"
+add_lit_testsuite(check-debuginfo "Running cross-project tests"
  ${CMAKE_CURRENT_BINARY_DIR}
  DEPENDS ${DEBUGINFO_TEST_DEPS}
  )
@@ -71,4 +71,4 @@ add_lit_testsuites(DEBUGINFO ${CMAKE_CURRENT_SOURCE_DIR}
  DEPENDS ${DEBUGINFO_TEST_DEPS}
  )
 
-set_target_properties(check-debuginfo PROPERTIES FOLDER "Debug info tests")
+set_target_properties(check-debuginfo PROPERTIES FOLDER "Tests")