Added getTiedToSrcOperand() to check for two-address'ness.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31360 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 5 insertions, 1 deletions

diff --git a/include/llvm/Target/TargetInstrInfo.h b/include/llvm/Target/TargetInstrInfo.h
index 0098870..ead6315 100644
--- a/include/llvm/Target/TargetInstrInfo.h
+++ b/include/llvm/Target/TargetInstrInfo.h
@@ -230,7 +230,7 @@ public:
   /// getOperandConstraint - Returns the value of the specific constraint if
   /// it is set. Returns -1 if it is not set.
   int getOperandConstraint(MachineOpCode Opcode, unsigned OpNum,
-                           OperandConstraint Constraint) {
+                           OperandConstraint Constraint) const {
     assert(OpNum < get(Opcode).numOperands &&
            "Invalid operand # of TargetInstrInfo");
     if (get(Opcode).OpInfo[OpNum].Constraints & (1 << Constraint)) {
@@ -240,6 +240,10 @@ public:
     return -1;
   }
 
+  /// getTiedToSrcOperand - Returns the operand that is tied to the specified
+  /// dest operand. Returns -1 if there isn't one.
+  int getTiedToSrcOperand(MachineOpCode Opcode, unsigned OpNum) const;
+
   /// getDWARF_LABELOpcode - Return the opcode of the target's DWARF_LABEL
   /// instruction if it has one.  This is used by codegen passes that update
   /// DWARF line number info as they modify the code.