Added Delta IR Reduction Tool

Summary: Tool parses input IR file, and runs the delta debugging algorithm to reduce the functions inside the input file.

Reviewers: alexshap, chandlerc

Subscribers: mgorny, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D63672

> llvm-svn: 368071

llvm-svn: 368112

1 files changed, 26 insertions, 0 deletions

diff --git a/llvm/tools/llvm-reduce/DeltaManager.h b/llvm/tools/llvm-reduce/DeltaManager.h
new file mode 100644
index 00000000000..027685e4120
--- /dev/null
+++ b/llvm/tools/llvm-reduce/DeltaManager.h
@@ -0,0 +1,26 @@
+//===- llvm-reduce.cpp - The LLVM Delta Reduction utility -----------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// This class calls each specialized Delta pass by passing it as a template to
+// the generic Delta Pass.
+//
+//===----------------------------------------------------------------------===//
+
+#include "TestRunner.h"
+#include "deltas/Delta.h"
+#include "deltas/RemoveFunctions.h"
+
+namespace llvm {
+
+inline void runDeltaPasses(TestRunner &Tester) {
+  outs() << "Reducing functions...\n";
+  Delta<RemoveFunctions>::run(Tester);
+  // TODO: Implement the rest of the Delta Passes
+}
+
+} // namespace llvm