[CUDA] Set LLVM calling convention for CUDA kernel
Some targets need special LLVM calling convention for CUDA kernel.
This patch does that through a TargetCodeGenInfo hook.
It only affects amdgcn target.
Patch by Greg Rodgers.
Revised and lit tests added by Yaxun Liu.
Differential Revision: https://reviews.llvm.org/D45223
llvm-svn: 330447
diff --git a/clang/lib/CodeGen/TargetInfo.h b/clang/lib/CodeGen/TargetInfo.h
index 24bd731..5c19c71 100644
--- a/clang/lib/CodeGen/TargetInfo.h
+++ b/clang/lib/CodeGen/TargetInfo.h
@@ -301,6 +301,8 @@
/// mangled name of functions declared within an extern "C" region and marked
/// as 'used', and having internal linkage.
virtual bool shouldEmitStaticExternCAliases() const { return true; }
+
+ virtual void setCUDAKernelCallingConvention(llvm::Function *F) const {}
};
} // namespace CodeGen