[llvm] [GVN] MemorySSA for GVN: embed the memory state in symbolic expressions (PR #123218)

[Alina Sbirlea via llvm-commits]

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@@ -596,10 +617,37 @@ uint32_t GVNPass::ValueTable::lookupOrAddCall(CallInst *C) {
     return v;
   }
 
+  if (MSSA && AA->onlyReadsMemory(C)) {
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alinas wrote:

This looks to me like it should be  `MSSA && IsMSSAEnabled && AA->onlyReadsMemory(C)`. WDYT?

https://github.com/llvm/llvm-project/pull/123218