[llvm] [CVP]: Fold `icmp eq X, C` to `trunc X to i1` if C=2k+1 and X in [2k, 2k+1] (PR #83829)

[Yingwei Zheng via llvm-commits]

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@@ -340,6 +373,9 @@ static bool processCmp(CmpInst *Cmp, LazyValueInfo *LVI) {
     if (processICmp(ICmp, LVI))
       return true;
 
+  if (processEqualityICmp(Cmp, LVI))
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dtcxzyw wrote:

Please move the logic into `processICmp`.

https://github.com/llvm/llvm-project/pull/83829