1 files changed, 92 insertions, 0 deletions
diff --git a/lib/CodeGen/PseudoSourceValue.cpp b/lib/CodeGen/PseudoSourceValue.cpp
new file mode 100644
index 000000000000..b4c20e6bfd31
--- /dev/null
+++ b/lib/CodeGen/PseudoSourceValue.cpp
@@ -0,0 +1,92 @@
+//===-- llvm/CodeGen/PseudoSourceValue.cpp ----------------------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file implements the PseudoSourceValue class.
+//
+//===----------------------------------------------------------------------===//
+
+#include "llvm/CodeGen/MachineFrameInfo.h"
+#include "llvm/CodeGen/PseudoSourceValue.h"
+#include "llvm/DerivedTypes.h"
+#include "llvm/Support/Compiler.h"
+#include "llvm/Support/ManagedStatic.h"
+#include "llvm/Support/raw_ostream.h"
+#include <map>
+using namespace llvm;
+
+static ManagedStatic<PseudoSourceValue[4]> PSVs;
+
+const PseudoSourceValue *PseudoSourceValue::getStack()
+{ return &(*PSVs)[0]; }
+const PseudoSourceValue *PseudoSourceValue::getGOT()
+{ return &(*PSVs)[1]; }
+const PseudoSourceValue *PseudoSourceValue::getJumpTable()
+{ return &(*PSVs)[2]; }
+const PseudoSourceValue *PseudoSourceValue::getConstantPool()
+{ return &(*PSVs)[3]; }
+
+static const char *const PSVNames[] = {
+  "Stack",
+  "GOT",
+  "JumpTable",
+  "ConstantPool"
+};
+
+PseudoSourceValue::PseudoSourceValue() :
+  Value(PointerType::getUnqual(Type::Int8Ty), PseudoSourceValueVal) {}
+
+void PseudoSourceValue::dump() const {
+  print(errs()); errs() << '\n';
+}
+
+void PseudoSourceValue::print(raw_ostream &OS) const {
+  OS << PSVNames[this - *PSVs];
+}
+
+namespace {
+  /// FixedStackPseudoSourceValue - A specialized PseudoSourceValue
+  /// for holding FixedStack values, which must include a frame
+  /// index.
+  class VISIBILITY_HIDDEN FixedStackPseudoSourceValue
+    : public PseudoSourceValue {
+    const int FI;
+  public:
+    explicit FixedStackPseudoSourceValue(int fi) : FI(fi) {}
+
+    virtual bool isConstant(const MachineFrameInfo *MFI) const;
+
+    virtual void print(raw_ostream &OS) const {
+      OS << "FixedStack" << FI;
+    }
+  };
+}
+
+static ManagedStatic<std::map<int, const PseudoSourceValue *> > FSValues;
+
+const PseudoSourceValue *PseudoSourceValue::getFixedStack(int FI) {
+  const PseudoSourceValue *&V = (*FSValues)[FI];
+  if (!V)
+    V = new FixedStackPseudoSourceValue(FI);
+  return V;
+}
+
+bool PseudoSourceValue::isConstant(const MachineFrameInfo *) const {
+  if (this == getStack())
+    return false;
+  if (this == getGOT() ||
+      this == getConstantPool() ||
+      this == getJumpTable())
+    return true;
+  assert(0 && "Unknown PseudoSourceValue!");
+  return false;
+}
+
+bool FixedStackPseudoSourceValue::isConstant(const MachineFrameInfo *MFI) const{
+  return MFI && MFI->isImmutableObjectIndex(FI);
+}