Export well known instruction opcodes usable by target independant passes

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5063 91177308-0d34-0410-b5e6-96231b3b80d8

2 files changed, 12 insertions, 0 deletions

diff --git a/include/llvm/Target/MachineInstrInfo.h b/include/llvm/Target/MachineInstrInfo.h
index f4a6a7714c..ea16d3dfd8 100644
--- a/include/llvm/Target/MachineInstrInfo.h
+++ b/include/llvm/Target/MachineInstrInfo.h
@@ -85,6 +85,12 @@ public:
   MachineInstrInfo(const MachineInstrDescriptor *desc, unsigned descSize,
 		   unsigned numRealOpCodes);
   virtual ~MachineInstrInfo();
+
+  // Invariant: All instruction sets use opcode #0 as the PHI instruction and
+  // opcode #1 as the noop instruction.
+  enum {
+    PHI = 0, NOOP = 1
+  };
   
   unsigned getNumRealOpCodes()  const { return numRealOpCodes; }
   unsigned getNumTotalOpCodes() const { return descSize; }
diff --git a/include/llvm/Target/TargetInstrInfo.h b/include/llvm/Target/TargetInstrInfo.h
index f4a6a7714c..ea16d3dfd8 100644
--- a/include/llvm/Target/TargetInstrInfo.h
+++ b/include/llvm/Target/TargetInstrInfo.h
@@ -85,6 +85,12 @@ public:
   MachineInstrInfo(const MachineInstrDescriptor *desc, unsigned descSize,
 		   unsigned numRealOpCodes);
   virtual ~MachineInstrInfo();
+
+  // Invariant: All instruction sets use opcode #0 as the PHI instruction and
+  // opcode #1 as the noop instruction.
+  enum {
+    PHI = 0, NOOP = 1
+  };
   
   unsigned getNumRealOpCodes()  const { return numRealOpCodes; }
   unsigned getNumTotalOpCodes() const { return descSize; }