[llvm] [ADT] Add DenseSet(llvm::from_t, Range) (PR #131832)

[Jakub Kuderski via llvm-commits]

================
@@ -33,6 +33,18 @@ TEST(DenseSetTest, DoubleEntrySetTest) {
   EXPECT_EQ(0u, set.count(2));
 }
 
+TEST(DenseSetTest, CtorRange) {
+  constexpr unsigned Args[] = {3, 1, 2};
----------------
kuhar wrote:

Should we also check for implicit conversions?

https://github.com/llvm/llvm-project/pull/131832