[llvm] [ValueTracking] Respect `samesign` flag in `isKnownInversion` (PR #112390)

[Nikita Popov via llvm-commits]

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@@ -8526,14 +8526,26 @@ bool llvm::isKnownInversion(const Value *X, const Value *Y) {
       !match(Y, m_c_ICmp(Pred2, m_Specific(A), m_Value(C))))
     return false;
 
+  // If they are only differ in predicate. They must both have samesign flag or
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nikic wrote:

```suggestion
  // If they only differ in predicate. They must both have samesign flag or
```

https://github.com/llvm/llvm-project/pull/112390