[llvm] [StaticDataLayout][MemProf] Record whether the IR is compiled with data access profiles by module flag. (PR #162333)

[Teresa Johnson via llvm-commits]

================
@@ -798,13 +798,15 @@ bool MemProfUsePass::annotateGlobalVariables(
     return false;
 
   if (!DataAccessProf) {
+    M.addModuleFlag(Module::Warning, "EnableDataAccessProf", 0U);
----------------
teresajohnson wrote:

What if the function doesn't have any variables that get data access profiles? I assume we have an non-missing but empty DataAccessProfiles section so we wouldn't come in here?

https://github.com/llvm/llvm-project/pull/162333