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HIPSPV: Unbundle SDL #136412

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HIPSPV: Unbundle SDL #136412

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This fixes the issue of rdc linking static libraries with device code

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@llvmbot llvmbot added clang Clang issues not falling into any other category clang:driver 'clang' and 'clang++' user-facing binaries. Not 'clang-cl' labels Apr 19, 2025
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llvmbot commented Apr 19, 2025

@llvm/pr-subscribers-clang-driver

@llvm/pr-subscribers-clang

Author: Paulius Velesko (pvelesko)

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This fixes the issue of rdc linking static libraries with device code


Full diff: https://github.com/llvm/llvm-project/pull/136412.diff

1 Files Affected:

  • (modified) clang/lib/Driver/ToolChains/HIPSPV.cpp (+10)
diff --git a/clang/lib/Driver/ToolChains/HIPSPV.cpp b/clang/lib/Driver/ToolChains/HIPSPV.cpp
index bbde5c047c3f9..9d227ca6fa1c8 100644
--- a/clang/lib/Driver/ToolChains/HIPSPV.cpp
+++ b/clang/lib/Driver/ToolChains/HIPSPV.cpp
@@ -70,6 +70,16 @@ void HIPSPV::Linker::constructLinkAndEmitSpirvCommand(
 
   // Link LLVM bitcode.
   ArgStringList LinkArgs{};
+
+  // Add static device libraries using the common helper function.
+  // This handles unbundling archives (.a) containing bitcode bundles.
+  const HIPSPVToolChain &TC = static_cast<const HIPSPVToolChain &>(getToolChain());
+  StringRef Arch = TC.getTriple().getArchName();
+  StringRef Target = "generic"; // SPIR-V is generic, no specific target ID like -mcpu
+  tools::AddStaticDeviceLibsLinking(C, *this, JA, Inputs, Args, LinkArgs, Arch,
+                                  Target, /*IsBitCodeSDL=*/true,
+                                  /*PostClangLink=*/false);
+
   for (auto Input : Inputs)
     LinkArgs.push_back(Input.getFilename());
   LinkArgs.append({"-o", TempFile});

This fixes the issue of rdc linking static libraries with device code
@pvelesko pvelesko force-pushed the hipspv-sdl-unbundle branch from 4a569a2 to fe6a426 Compare May 5, 2025 15:00
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