[llvm-branch-commits] [clang] Accept `cl`-style output arguments (`/Fo`, `-Fo`) for `--fmodule-output` (PR #121046)

[Carlo Cabrera via llvm-branch-commits]

================
@@ -5890,7 +5890,7 @@ const char *Driver::GetNamedOutputPath(Compilation &C, 
const JobAction &JA,
   llvm::PrettyStackTraceString CrashInfo("Computing output path");
   // Output to a user requested destination?
   if (AtTopLevel && !isa<DsymutilJobAction>(JA) && !isa<VerifyJobAction>(JA)) {
-    if (Arg *FinalOutput = C.getArgs().getLastArg(options::OPT_o))
+    if (Arg *FinalOutput = C.getArgs().getLastArg(options::OPT_o, 
options::OPT__SLASH_Fo, options::OPT__SLASH_Fo_COLON))
----------------
carlocab wrote:

We should probably gate checking the cl-style flags behind `isCLMode`.

https://github.com/llvm/llvm-project/pull/121046
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