[clang] [llvm] [clang][Driver] Add HIPAMD Driver support for AMDGCN flavoured SPIR-V (PR #95061)

[Yaxun Liu via cfe-commits]

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@@ -147,6 +147,14 @@ getNVIDIAOffloadTargetTriple(const Driver &D, const 
ArgList &Args,
 static std::optional<llvm::Triple>
 getHIPOffloadTargetTriple(const Driver &D, const ArgList &Args) {
   if (!Args.hasArg(options::OPT_offload_EQ)) {
+    auto OffloadArchs = Args.getAllArgValues(options::OPT_offload_arch_EQ);
+    if (llvm::find(OffloadArchs, "amdgcnspirv") != OffloadArchs.cend()) {
+      if (OffloadArchs.size() == 1)
+        return llvm::Triple("spirv64-amd-amdhsa");
----------------
yxsamliu wrote:

I am OK to commit this since the command line option won't change so users are 
not affected.

https://github.com/llvm/llvm-project/pull/95061
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