[Dialect] Avoid repeated hash lookups (NFC) (#108319)

kazutakahirata · web-flow · commit 67e7f05aa0ef · 2024-09-12T00:52:17.000-07:00
diff --git a/mlir/lib/Dialect/Transform/IR/TransformOps.cpp b/mlir/lib/Dialect/Transform/IR/TransformOps.cpp
@@ -1588,10 +1588,8 @@ transform::GetParentOp::apply(transform::TransformRewriter &rewriter,
       }
     }
     if (getDeduplicate()) {
-      if (!resultSet.contains(parent)) {
+      if (resultSet.insert(parent).second)
         parents.push_back(parent);
-        resultSet.insert(parent);
-      }
     } else {
       parents.push_back(parent);
     }

Original file line number	Diff line number	Diff line change
`@@ -1588,10 +1588,8 @@ transform::GetParentOp::apply(transform::TransformRewriter &rewriter,`
`1588`	`1588`	`}`
`1589`	`1589`	`}`
`1590`	`1590`	`if (getDeduplicate()) {`
`1591`		`- if (!resultSet.contains(parent)) {`
	`1591`	`+ if (resultSet.insert(parent).second)`
`1592`	`1592`	`parents.push_back(parent);`
`1593`		`- resultSet.insert(parent);`
`1594`		`- }`
`1595`	`1593`	`} else {`
`1596`	`1594`	`parents.push_back(parent);`
`1597`	`1595`	`}`