[llvm-commits] CVS: llvm/include/llvm/Target/TargetInstrInfo.h

[Alkis Evlogimenos]

Changes in directory llvm/include/llvm/Target:

TargetInstrInfo.h updated: 1.52 -> 1.53

---
Log message:

Add TargetInstrInfo::isMoveInstr() to support coalescing in register
allocation.


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Diffs of the changes:  (+10 -0)

Index: llvm/include/llvm/Target/TargetInstrInfo.h
diff -u llvm/include/llvm/Target/TargetInstrInfo.h:1.52 llvm/include/llvm/Target/TargetInstrInfo.h:1.53
--- llvm/include/llvm/Target/TargetInstrInfo.h:1.52	Tue Nov 11 16:41:31 2003
+++ llvm/include/llvm/Target/TargetInstrInfo.h	Sun Dec 28 11:35:08 2003
@@ -214,6 +214,16 @@
     return get(Opcode).Flags & M_TERMINATOR_FLAG;
   }
 
+  //
+  // Return true if the instruction is a register to register move and
+  // leave the source and dest operands in the passed parameters.
+  //
+  virtual bool isMoveInstr(const MachineInstr& MI,
+                           unsigned& sourceReg,
+                           unsigned& destReg) const {
+    return false;
+  }
+
   // Check if an instruction can be issued before its operands are ready,
   // or if a subsequent instruction that uses its result can be issued
   // before the results are ready.