[clang] [llvm] [SPIRV][RFC] Rework / extend support for memory scopes (PR #106429)

[Matt Arsenault via cfe-commits]

================
@@ -251,6 +251,24 @@ SPIRV::MemorySemantics::MemorySemantics 
getMemSemantics(AtomicOrdering Ord) {
   llvm_unreachable(nullptr);
 }
 
+SPIRV::Scope::Scope getMemScope(const LLVMContext &Ctx, SyncScope::ID ID) {
+  SmallVector<StringRef> SSNs;
+  Ctx.getSyncScopeNames(SSNs);
+
+  StringRef MemScope = SSNs[ID];
+  if (MemScope.empty() || MemScope == "all_svm_devices")
----------------
arsenm wrote:

Hard disagree, we do not want aliases. System = "" = all_svm_devices 

https://github.com/llvm/llvm-project/pull/106429
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