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

[Vyacheslav Levytskyy via cfe-commits]

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@@ -33,7 +33,8 @@
 #include "llvm/Support/Debug.h"
 
 namespace {
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VyacheslavLevytskyy wrote:

@AlexVlx Let's remove all references to `struct SyncScopeIDs` from the whole `SPIRVInstructionSelector.cpp` module. We will insert `getOrInsertSyncScopeID()` in the `getMemScope()` portion of code.

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