[llvm] [MergeFunc] Handle ConstantRange attributes. (PR #88584)

[Nikita Popov via llvm-commits]

================
@@ -143,6 +143,14 @@ int FunctionComparator::cmpAttrs(const AttributeList L,
         if (int Res = cmpNumbers((uint64_t)TyL, (uint64_t)TyR))
           return Res;
         continue;
+      } else if (LA.isConstantRangeAttribute() &&
+                 RA.isConstantRangeAttribute()) {
----------------
nikic wrote:

This still needs the getKindAsEnum check (in case there are more ConstantRange attributes in the future).

Might make sense to just move that check outside the isTypeAttribute branch and always perform it.

https://github.com/llvm/llvm-project/pull/88584