[clang] [Clang] Simplify specifying passes via -Xoffload-linker (PR #102483)

[Joseph Huber via cfe-commits]

================
@@ -571,9 +572,10 @@ Expected<StringRef> clang(ArrayRef<StringRef> InputFiles, const ArgList &Args) {
   }
 
   // Pass on -mllvm options to the linker invocation.
-  for (const opt::Arg *Arg : Args.filtered(OPT_mllvm))
-    CmdArgs.push_back(
-        Args.MakeArgString("-Wl,-mllvm=" + StringRef(Arg->getValue())));
+  for (const opt::Arg *Arg : Args.filtered(OPT_mllvm)) {
+    CmdArgs.append({"-Xlinker", Args.MakeArgString(
+                                    "-mllvm=" + StringRef(Arg->getValue()))});
+  }
----------------
jhuber6 wrote:

```suggestion
  for (const opt::Arg *Arg : Args.filtered(OPT_mllvm))
    CmdArgs.append({"-Xlinker", Args.MakeArgString(
                                    "-mllvm=" + StringRef(Arg->getValue()))});
```
```suggestion
  for (const opt::Arg *Arg : Args.filtered(OPT_mllvm))
    CmdArgs.append({"-Xlinker", Args.MakeArgString(
                                    "-mllvm=" + StringRef(Arg->getValue()))});
```

https://github.com/llvm/llvm-project/pull/102483