[mlir][PassManager] Properly set the initialization generation when cloning a pass...

Fixes a bug where dynamic pass pipelines of cloned pass managers weren't being initialized properly.

diff --git a/mlir/lib/Pass/Pass.cpp b/mlir/lib/Pass/Pass.cpp
index fdc6d56..d8a59bc 100644 (file)
--- a/mlir/lib/Pass/Pass.cpp
+++ b/mlir/lib/Pass/Pass.cpp
@@ -246,6 +246,7 @@ OpPassManager::OpPassManager(OpPassManager &&rhs) : impl(std::move(rhs.impl)) {}
 OpPassManager::OpPassManager(const OpPassManager &rhs) { *this = rhs; }
 OpPassManager &OpPassManager::operator=(const OpPassManager &rhs) {
   impl.reset(new OpPassManagerImpl(rhs.impl->name, rhs.impl->nesting));
+  impl->initializationGeneration = rhs.impl->initializationGeneration;
   for (auto &pass : rhs.impl->passes)
     impl->passes.emplace_back(pass->clone());
   return *this;