1 files changed, 57 insertions, 0 deletions
diff --git a/contrib/llvm/lib/CodeGen/Spiller.h b/contrib/llvm/lib/CodeGen/Spiller.h
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+++ b/contrib/llvm/lib/CodeGen/Spiller.h
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+//===-- 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 "llvm/ADT/SmallVector.h"
+#include <vector>
+
+namespace llvm {
+
+  class LiveInterval;
+  class LiveIntervals;
+  class LiveStacks;
+  class MachineFunction;
+  class MachineInstr;
+  class MachineLoopInfo;
+  class SlotIndex;
+  class VirtRegMap;
+  class VNInfo;
+
+  /// Spiller interface.
+  ///
+  /// Implementations are utility classes which insert spill or remat code on
+  /// demand.
+  class Spiller {
+  public:
+    virtual ~Spiller() = 0;
+
+    /// spill - Spill the given live interval. The method used will depend on
+    /// the Spiller implementation selected.
+    ///
+    /// @param li            The live interval to be spilled.
+    /// @param spillIs       A list of intervals that are about to be spilled,
+    ///                      and so cannot be used for remat etc.
+    /// @param newIntervals  The newly created intervals will be appended here.
+    /// @param earliestIndex The earliest point for splitting. (OK, it's another
+    ///                      pointer to the allocator guts).
+    virtual void spill(LiveInterval *li,
+                       std::vector<LiveInterval*> &newIntervals,
+                       SmallVectorImpl<LiveInterval*> &spillIs,
+                       SlotIndex *earliestIndex = 0) = 0;
+
+  };
+
+  /// Create and return a spiller object, as specified on the command line.
+  Spiller* createSpiller(MachineFunction *mf, LiveIntervals *li,
+                         const MachineLoopInfo *loopInfo, VirtRegMap *vrm);
+}
+
+#endif