[clang] [clang] Implement gcc_struct attribute on Itanium targets (PR #71148)

[Dan Klishch via cfe-commits]

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@@ -6113,9 +6113,13 @@ void Clang::ConstructJob(Compilation &C, const JobAction &JA,
   if (KernelOrKext && RawTriple.isOSDarwin())
     CmdArgs.push_back("-fforbid-guard-variables");
 
-  if (Args.hasFlag(options::OPT_mms_bitfields, options::OPT_mno_ms_bitfields,
-                   Triple.isWindowsGNUEnvironment())) {
-    CmdArgs.push_back("-mms-bitfields");
+  if (Args.hasArg(options::OPT_mms_bitfields) ||
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DanShaders wrote:

Sure, I don't mind

https://github.com/llvm/llvm-project/pull/71148