Refactor DAGCombinerInfo. Change the different booleans that indicate if we are before or after different runs of DAGCo, with the CombineLevel enum.

Also, added a new API for checking if we are running before or after the LegalizeVectorOps phase. 



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@171142 91177308-0d34-0410-b5e6-96231b3b80d8

2 files changed, 26 insertions, 7 deletions

diff --git a/include/llvm/CodeGen/DAGCombine.h b/include/llvm/CodeGen/DAGCombine.h
new file mode 100644
index 0000000..8b59190
--- /dev/null
+++ b/include/llvm/CodeGen/DAGCombine.h
@@ -0,0 +1,25 @@
+//===-- llvm/CodeGen/DAGCombine.h  ------- SelectionDAG Nodes ---*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+
+#ifndef LLVM_CODEGEN_DAGCOMBINE_H
+#define LLVM_CODEGEN_DAGCOMBINE_H
+
+namespace llvm {
+
+enum CombineLevel {
+  BeforeLegalizeTypes,
+  AfterLegalizeTypes,
+  AfterLegalizeVectorOps,
+  AfterLegalizeDAG
+};
+
+} // end llvm namespace
+
+#endif
diff --git a/include/llvm/CodeGen/SelectionDAG.h b/include/llvm/CodeGen/SelectionDAG.h
index b150c29..431c679 100644
--- a/include/llvm/CodeGen/SelectionDAG.h
+++ b/include/llvm/CodeGen/SelectionDAG.h
@@ -18,6 +18,7 @@
 #include "llvm/ADT/DenseSet.h"
 #include "llvm/ADT/StringMap.h"
 #include "llvm/ADT/ilist.h"
+#include "llvm/CodeGen/DAGCombine.h"
 #include "llvm/CodeGen/SelectionDAGNodes.h"
 #include "llvm/Support/RecyclingAllocator.h"
 #include "llvm/Target/TargetMachine.h"
@@ -111,13 +112,6 @@ public:
   DbgIterator ByvalParmDbgEnd()   { return ByvalParmDbgValues.end(); }
 };
 
-enum CombineLevel {
-  BeforeLegalizeTypes,
-  AfterLegalizeTypes,
-  AfterLegalizeVectorOps,
-  AfterLegalizeDAG
-};
-
 class SelectionDAG;
 void checkForCycles(const SDNode *N);
 void checkForCycles(const SelectionDAG *DAG);