[llvm-project] Replace downstream patch with backport

llvm/llvm-project#121293 properly fixes the
mlgo-utils build issue found during the upgrade to LLVM 18.

Author: hahnjo

interpreter/llvm-project/llvm-project.tag

@@ -1 +1 @@
-ROOT-llvm18-20250110-01
+ROOT-llvm18-20250113-01

interpreter/llvm-project/llvm/CMakeLists.txt

@@ -1197,7 +1197,7 @@ if( LLVM_INCLUDE_UTILS )
   add_subdirectory(utils/UnicodeData)
   add_subdirectory(utils/yaml-bench)
   add_subdirectory(utils/split-file)
-  # add_subdirectory(utils/mlgo-utils)
+  add_subdirectory(utils/mlgo-utils)
   if( LLVM_INCLUDE_TESTS )
     add_subdirectory(${LLVM_THIRD_PARTY_DIR}/unittest ${CMAKE_CURRENT_BINARY_DIR}/third-party/unittest)
   endif()

interpreter/llvm-project/llvm/utils/mlgo-utils/CMakeLists.txt

@@ -1,11 +1,13 @@
-configure_lit_site_cfg(
-  "${CMAKE_CURRENT_SOURCE_DIR}/tests/lit.site.cfg.in"
-  "${CMAKE_CURRENT_BINARY_DIR}/lit.site.cfg"
-)
+if(LLVM_INCLUDE_TESTS)
+  configure_lit_site_cfg(
+    "${CMAKE_CURRENT_SOURCE_DIR}/tests/lit.site.cfg.in"
+    "${CMAKE_CURRENT_BINARY_DIR}/lit.site.cfg"
+  )
 
-add_lit_testsuite(check-mlgo-utils "Running mlgo-utils tests"
-  ${CMAKE_CURRENT_BINARY_DIR}
-  DEPENDS "FileCheck" "not" "count" "split-file" "yaml2obj" "llvm-objcopy"
-)
+  add_lit_testsuite(check-mlgo-utils "Running mlgo-utils tests"
+    ${CMAKE_CURRENT_BINARY_DIR}
+    DEPENDS "FileCheck" "not" "count" "split-file" "yaml2obj" "llvm-objcopy"
+  )
 
-set_target_properties(check-mlgo-utils PROPERTIES FOLDER "Tests")
+  set_target_properties(check-mlgo-utils PROPERTIES FOLDER "Tests")
+endif()