New Spiller interface and trivial implementation.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72030 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/Spiller.h b/lib/CodeGen/Spiller.h
new file mode 100644
index 0000000..f17a0b5
--- /dev/null
+++ b/lib/CodeGen/Spiller.h
@@ -0,0 +1,32 @@
+//===-- llvm/CodeGen/Spiller.h - Spiller -*- 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_SPILLER_H
+#define LLVM_CODEGEN_SPILLER_H
+
+#include <vector>
+
+namespace llvm {
+
+ /// Spiller interface.
+ ///
+ /// Implementations are utility classes which insert spill or remat code on
+ /// demand.
+ class Spiller {
+ public:
+ virtual ~Spiller() = 0;
+ virtual std::vector<class LiveInterval*> spill(class LiveInterval *li) = 0;
+ };
+
+ /// Create and return a spiller object, as specified on the command line.
+ Spiller* createSpiller(class MachineFunction *mf, class LiveIntervals *li,
+ class VirtRegMap *vrm);
+}
+
+#endif