1 files changed, 97 insertions, 0 deletions
diff --git a/llvm/lib/Target/SparcV9/MachineCodeForInstruction.h b/llvm/lib/Target/SparcV9/MachineCodeForInstruction.h
new file mode 100644
index 00000000000..fc36267cb9e
--- /dev/null
+++ b/llvm/lib/Target/SparcV9/MachineCodeForInstruction.h
@@ -0,0 +1,97 @@
+//===-- MachineCodeForInstruction.h -----------------------------*- C++ -*-===//
+// 
+//                     The LLVM Compiler Infrastructure
+//
+// This file was developed by the LLVM research group and is distributed under
+// the University of Illinois Open Source License. See LICENSE.TXT for details.
+// 
+//===----------------------------------------------------------------------===//
+//
+// FIXME: This file is SparcV9 specific.  Do not rely on this class for new 
+// targets, it will go away in the future.
+//
+// Representation of the sequence of machine instructions created for a single
+// VM instruction.  Additionally records information about hidden and implicit
+// values used by the machine instructions: about hidden values used by the
+// machine instructions:
+// 
+// "Temporary values" are intermediate values used in the machine instruction
+// sequence, but not in the VM instruction Note that such values should be
+// treated as pure SSA values with no interpretation of their operands (i.e., as
+// a TmpInstruction object which actually represents such a value).
+// 
+// (2) "Implicit uses" are values used in the VM instruction but not in
+//     the machine instruction sequence
+// 
+//===----------------------------------------------------------------------===//
+
+#ifndef MACHINECODE_FOR_INSTRUCTION_H
+#define MACHINECODE_FOR_INSTRUCTION_H
+
+#include <vector>
+
+namespace llvm {
+
+class MachineInstr;
+class Instruction;
+class Value;
+class CallArgsDescriptor;
+
+  class MachineCodeForInstruction {
+  std::vector<Value*> tempVec;          // used by m/c instr but not VM instr
+  std::vector<MachineInstr*> Contents;  // the machine instr for this VM instr
+  CallArgsDescriptor* callArgsDesc;     // only used for CALL instructions
+public:
+  MachineCodeForInstruction() : callArgsDesc(NULL) {}
+  ~MachineCodeForInstruction();
+  
+  static MachineCodeForInstruction &get(const Instruction *I);
+  static void destroy(const Instruction *I);
+
+  // Access to underlying machine instructions...
+  typedef std::vector<MachineInstr*>::iterator iterator;
+  typedef std::vector<MachineInstr*>::const_iterator const_iterator;
+
+  unsigned size() const { return Contents.size(); }
+  bool empty() const { return Contents.empty(); }
+  MachineInstr *front() const { return Contents.front(); }
+  MachineInstr *back() const { return Contents.back(); }
+  MachineInstr *&operator[](unsigned i) { return Contents[i]; }
+  MachineInstr *operator[](unsigned i) const { return Contents[i]; }
+  void pop_back() { Contents.pop_back(); }
+
+  iterator begin() { return Contents.begin(); }
+  iterator end()   { return Contents.end(); }
+  const_iterator begin() const { return Contents.begin(); }
+  const_iterator end()   const { return Contents.end(); }
+
+  template<class InIt>
+  void insert(iterator where, InIt first, InIt last) {
+    Contents.insert(where, first, last);
+  }
+  iterator erase(iterator where) { return Contents.erase(where); }
+  iterator erase(iterator s, iterator e) { return Contents.erase(s, e); }
+  
+
+  // dropAllReferences() - This function drops all references within
+  // temporary (hidden) instructions created in implementing the original
+  // VM intruction.  This ensures there are no remaining "uses" within
+  // these hidden instructions, before the values of a method are freed.
+  //
+  void dropAllReferences();
+
+  const std::vector<Value*> &getTempValues() const { return tempVec; }
+        std::vector<Value*> &getTempValues()       { return tempVec; }
+  
+  MachineCodeForInstruction &addTemp(Value *tmp) {
+    tempVec.push_back(tmp);
+    return *this;
+  }
+
+  void setCallArgsDescriptor(CallArgsDescriptor* desc) { callArgsDesc = desc; }
+  CallArgsDescriptor* getCallArgsDescriptor() const    { return callArgsDesc; }
+};
+
+} // End llvm namespace
+
+#endif