new file, obviously just a stub

llvm-svn: 22868

1 files changed, 23 insertions, 0 deletions

diff --git a/llvm/lib/CodeGen/SelectionDAG/ScheduleDAG.cpp b/llvm/lib/CodeGen/SelectionDAG/ScheduleDAG.cpp
new file mode 100644
index 00000000000..28edbe30b5d
--- /dev/null
+++ b/llvm/lib/CodeGen/SelectionDAG/ScheduleDAG.cpp
@@ -0,0 +1,23 @@
+//===-- ScheduleDAG.cpp - Implement a trivial DAG scheduler ---------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file was developed by Chris Lattner and is distributed under the
+// University of Illinois Open Source License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This implements a simple code linearizer for DAGs.  This is not a very good
+// way to emit code, but gets working code quickly.
+//
+//===----------------------------------------------------------------------===//
+
+#define DEBUG_TYPE "sched"
+#include "llvm/CodeGen/SelectionDAGISel.h"
+using namespace llvm;
+
+/// Pick a safe ordering and emit instructions for each target node in the
+/// graph.
+void SelectionDAGISel::ScheduleAndEmitDAG(SelectionDAG &SD) {
+  
+}