[clang] Add debug options to clang-linker-wrapper (PR #101008)

[Joseph Huber via cfe-commits]

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@@ -581,8 +581,16 @@ Expected<StringRef> clang(ArrayRef<StringRef> InputFiles, const ArgList &Args) {
   if (SaveTemps)
     CmdArgs.push_back("-save-temps");
 
-  if (SaveTemps && linkerSupportsLTO(Args))
-    CmdArgs.push_back("-Wl,--save-temps");
+  if (linkerSupportsLTO(Args)) {
+    if (SaveTemps)
+      CmdArgs.push_back("-Wl,--save-temps");
+    if (Args.hasArg(OPT_lto_debug_pass_manager))
+      CmdArgs.push_back("-Wl,--lto-debug-pass-manager");
----------------
jhuber6 wrote:

The `--save-temps` thing is kind of special, I'm thining for stuff like this it's better suited for `-Xoffload-linker --lto-debug-pass-manager` once I merge https://github.com/llvm/llvm-project/pull/101032.

https://github.com/llvm/llvm-project/pull/101008