[clang] [clang][SPIR-V] Add support for AMDGCN flavoured SPIRV (PR #89796)

[Yaxun Liu via cfe-commits]

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@@ -54,3 +56,289 @@ void SPIRV64TargetInfo::getTargetDefines(const LangOptions &Opts,
   BaseSPIRVTargetInfo::getTargetDefines(Opts, Builder);
   DefineStd(Builder, "SPIRV64", Opts);
 }
+
+static constexpr Builtin::Info BuiltinInfo[] = {
+#define BUILTIN(ID, TYPE, ATTRS)                                               \
+  {#ID, TYPE, ATTRS, nullptr, HeaderDesc::NO_HEADER, ALL_LANGUAGES},
+#define TARGET_BUILTIN(ID, TYPE, ATTRS, FEATURE)                               \
+  {#ID, TYPE, ATTRS, FEATURE, HeaderDesc::NO_HEADER, ALL_LANGUAGES},
+#include "clang/Basic/BuiltinsAMDGPU.def"
+};
+
+namespace {
+const char *AMDGPUGCCRegNames[] = {
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yxsamliu wrote:

we could create a common base class for amdgpu target info and spirv64 amdgcn target info and not duplicate stuff. we can define a static member for reg names.

https://github.com/llvm/llvm-project/pull/89796