[clang] [llvm] [HIPSPV] Add in-tree SPIR-V backend support for chipStar (PR #186972)

[Henry Linjamäki via cfe-commits]

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@@ -59,7 +59,11 @@ void HIPSPV::Linker::constructLinkAndEmitSpirvCommand(
   // Link LLVM bitcode.
   ArgStringList LinkArgs{};
 
-  for (auto Input : Inputs)
+  // The new offload driver can pass non-filename InputInfo entries (e.g.
+  // Nothing/InputArg placeholders) alongside the real bitcode inputs. Calling
+  // getFilename() on those reads garbage from the union; only forward genuine
+  // filename inputs to llvm-link.
+  for (const auto &Input : Inputs)
     if (Input.isFilename())
       LinkArgs.push_back(Input.getFilename());
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linehill wrote:

This change got introduced in https://github.com/llvm/llvm-project/pull/187655 so a rebase maybe needed before merge.

https://github.com/llvm/llvm-project/pull/186972