1 files changed, 43 insertions, 0 deletions
diff --git a/contrib/llvm/lib/IR/PassManager.cpp b/contrib/llvm/lib/IR/PassManager.cpp
new file mode 100644
index 0000000..a5f407c
--- /dev/null
+++ b/contrib/llvm/lib/IR/PassManager.cpp
@@ -0,0 +1,43 @@
+//===- PassManager.cpp - Infrastructure for managing & running IR passes --===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#include "llvm/ADT/STLExtras.h"
+#include "llvm/IR/LLVMContext.h"
+#include "llvm/IR/PassManager.h"
+
+using namespace llvm;
+
+char FunctionAnalysisManagerModuleProxy::PassID;
+
+FunctionAnalysisManagerModuleProxy::Result
+FunctionAnalysisManagerModuleProxy::run(Module &M) {
+  assert(FAM->empty() && "Function analyses ran prior to the module proxy!");
+  return Result(*FAM);
+}
+
+FunctionAnalysisManagerModuleProxy::Result::~Result() {
+  // Clear out the analysis manager if we're being destroyed -- it means we
+  // didn't even see an invalidate call when we got invalidated.
+  FAM->clear();
+}
+
+bool FunctionAnalysisManagerModuleProxy::Result::invalidate(
+    Module &M, const PreservedAnalyses &PA) {
+  // If this proxy isn't marked as preserved, then we can't even invalidate
+  // individual function analyses, there may be an invalid set of Function
+  // objects in the cache making it impossible to incrementally preserve them.
+  // Just clear the entire manager.
+  if (!PA.preserved(ID()))
+    FAM->clear();
+
+  // Return false to indicate that this result is still a valid proxy.
+  return false;
+}
+
+char ModuleAnalysisManagerFunctionProxy::PassID;