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[Clang][AMDGPU] Enable avail-extern-to-local for ThinLTO in HIP #134476

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Merged
merged 1 commit into from
Apr 14, 2025
Merged

[Clang][AMDGPU] Enable avail-extern-to-local for ThinLTO in HIP #134476

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4 changes: 3 additions & 1 deletion clang/lib/Driver/ToolChains/HIPAMD.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -103,8 +103,10 @@ void AMDGCN::Linker::constructLldCommand(Compilation &C, const JobAction &JA,
// ToDo: Remove this option after AMDGPU backend supports ISA-level linking.
// Since AMDGPU backend currently does not support ISA-level linking, all
// called functions need to be imported.
if (IsThinLTO)
if (IsThinLTO) {
LldArgs.push_back(Args.MakeArgString("-plugin-opt=-force-import-all"));
LldArgs.push_back(Args.MakeArgString("-plugin-opt=-avail-extern-to-local"));
}

for (const Arg *A : Args.filtered(options::OPT_mllvm)) {
LldArgs.push_back(
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8 changes: 8 additions & 0 deletions clang/test/Driver/hip-thinlto.hip
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Original file line number Diff line number Diff line change
@@ -0,0 +1,8 @@
// RUN: %clang -foffload-lto=thin -nogpulib -nogpuinc %s -### 2>&1 | FileCheck %s

// CHECK: -plugin-opt=thinlto
// CHECK-SAME: -plugin-opt=-force-import-all
// CHECK-SAME: -plugin-opt=-avail-extern-to-local
int main(int, char *[]) {
return 0;
}