[clang] [clang][Driver][SPIR-V] Allow linking IR using llvm-link (PR #169572)

[Nick Sarnie via cfe-commits]

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@@ -70,6 +70,28 @@ void SPIRV::constructAssembleCommand(Compilation &C, const Tool &T,
                                          Exec, CmdArgs, Input, Output));
 }
 
+void SPIRV::constructLLVMLinkCommand(Compilation &C, const Tool &T,
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sarnex wrote:

Just pushed a commit implementing this, hopefully it matches what you were thinking

https://github.com/llvm/llvm-project/pull/169572