[clang] Add SPIRV support to HIPAMD toolchain (PR #75357)

[Alex Voicu via cfe-commits]

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@@ -209,6 +210,13 @@ void AMDGCN::Linker::ConstructJob(Compilation &C, const JobAction &JA,
   if (JA.getType() == types::TY_LLVM_BC)
     return constructLlvmLinkCommand(C, JA, Inputs, Output, Args);
 
+  if (Args.getLastArgValue(options::OPT_mcpu_EQ) == "generic") {
+    llvm::opt::ArgStringList TrArgs{"--spirv-max-version=1.1",
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AlexVlx wrote:

I'm not sure we want to stick with 1.1 here, the Translator goes up to 1.4 at the moment - should we consider going to that instead?

https://github.com/llvm/llvm-project/pull/75357