[llvm] [DSE] Apply initializes attribute to DSE (PR #107282)

[Haopeng Liu via llvm-commits]

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@@ -911,7 +1020,8 @@ struct DSEState {
 
         auto *MD = dyn_cast_or_null<MemoryDef>(MA);
         if (MD && MemDefs.size() < MemorySSADefsPerBlockLimit &&
-            (getLocForWrite(&I) || isMemTerminatorInst(&I)))
+            (getLocForWrite(&I) || isMemTerminatorInst(&I) ||
+             HasInitializesAttr(&I)))
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haopliu wrote:

Yes, it's better to check the `EnableInitializesImprovement` at the beginning as well. Done!

https://github.com/llvm/llvm-project/pull/107282