[llvm] [EarlyCSE] Compare GEP instructions based on offset (PR #65875)

[Nikita Popov via llvm-commits]

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@@ -553,6 +553,77 @@ bool DenseMapInfo<CallValue>::isEqual(CallValue LHS, CallValue RHS) {
   return LHSI->isIdenticalTo(RHSI);
 }
 
+//===----------------------------------------------------------------------===//
+// GEPValue
+//===----------------------------------------------------------------------===//
+
+namespace {
+
+struct GEPValue {
+  Instruction *Inst;
+  APInt ConstantOffset;
+  bool HasConstantOffset;
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nikic wrote:

Use std::optional instead?

https://github.com/llvm/llvm-project/pull/65875