[clang] [Driver][PS5] Set visibility option defaults (PR #92091)

[via cfe-commits]

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@@ -376,24 +382,32 @@ void toolchains::PS4PS5Base::addClangTargetOptions(
     else
       CC1Args.push_back("-fvisibility-dllexport=protected");
 
+    // For PS4 we override the visibilty of globals definitions without
+    // dllimport or  dllexport annotations.
     if (DriverArgs.hasArg(options::OPT_fvisibility_nodllstorageclass_EQ))
       DriverArgs.AddLastArg(CC1Args,
                             options::OPT_fvisibility_nodllstorageclass_EQ);
-    else
+    else if (getTriple().isPS4())
       CC1Args.push_back("-fvisibility-nodllstorageclass=hidden");
+    else
+      CC1Args.push_back("-fvisibility-nodllstorageclass=keep");
 
     if (DriverArgs.hasArg(options::OPT_fvisibility_externs_dllimport_EQ))
       DriverArgs.AddLastArg(CC1Args,
                             options::OPT_fvisibility_externs_dllimport_EQ);
     else
       CC1Args.push_back("-fvisibility-externs-dllimport=default");
 
+    // For PS4 we override the visibilty of external globals without
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bd1976bris wrote:

Note for reviewer: This comment is new and replaces a comment in our downstream code that wasn't suitable for upstream as it referenced internal tracking numbers.

https://github.com/llvm/llvm-project/pull/92091