Revert "[ThinLTO] Populate declaration import status except for distributed ThinLTO under a default-off new option" (#92715)

Reverts llvm/llvm-project#88024

Build bot failures
(https://lab.llvm.org/buildbot/#/builders/259/builds/4727 and
https://lab.llvm.org/buildbot/#/builders/9/builds/43876)

1 files changed, 1 insertions, 8 deletions

diff --git a/llvm/lib/LTO/LTOBackend.cpp b/llvm/lib/LTO/LTOBackend.cpp
index 58434fe..d4b89ed 100644
--- a/llvm/lib/LTO/LTOBackend.cpp
+++ b/llvm/lib/LTO/LTOBackend.cpp
@@ -721,14 +721,7 @@ bool lto::initImportList(const Module &M,
       if (Summary->modulePath() == M.getModuleIdentifier())
         continue;
       // Add an entry to provoke importing by thinBackend.
-      // Try emplace the entry first. If an entry with the same key already
-      // exists, set the value to 'std::min(existing-value, new-value)' to make
-      // sure a definition takes precedence over a declaration.
-      auto [Iter, Inserted] = ImportList[Summary->modulePath()].try_emplace(
-          GUID, Summary->importType());
-
-      if (!Inserted)
-        Iter->second = std::min(Iter->second, Summary->importType());
+      ImportList[Summary->modulePath()].insert(GUID);
     }
   }
   return true;