Promote SETCC operands.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43340 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/CodeGen/SelectionDAG/LegalizeDAGTypes.cpp b/lib/CodeGen/SelectionDAG/LegalizeDAGTypes.cpp
index 5e5b07443ec865252354400606bb8716140963c3..e10a427ffedb4f4c146255bd69dc73dfd2250384 100644 (file)
--- a/lib/CodeGen/SelectionDAG/LegalizeDAGTypes.cpp
+++ b/lib/CodeGen/SelectionDAG/LegalizeDAGTypes.cpp
@@ -190,6 +190,7 @@ private:
   SDOperand PromoteOperand_SELECT(SDNode *N, unsigned OpNo);
   SDOperand PromoteOperand_BRCOND(SDNode *N, unsigned OpNo);
   SDOperand PromoteOperand_BR_CC(SDNode *N, unsigned OpNo);
+  SDOperand PromoteOperand_SETCC(SDNode *N, unsigned OpNo);
   SDOperand PromoteOperand_STORE(StoreSDNode *N, unsigned OpNo);
 
   void PromoteSetCCOperands(SDOperand &LHS,SDOperand &RHS, ISD::CondCode Code);
@@ -1456,6 +1457,7 @@ bool DAGTypeLegalizer::PromoteOperand(SDNode *N, unsigned OpNo) {
   case ISD::SELECT:      Res = PromoteOperand_SELECT(N, OpNo); break;
   case ISD::BRCOND:      Res = PromoteOperand_BRCOND(N, OpNo); break;
   case ISD::BR_CC:       Res = PromoteOperand_BR_CC(N, OpNo); break;
+  case ISD::SETCC:       Res = PromoteOperand_SETCC(N, OpNo); break;
 
   case ISD::STORE:       Res = PromoteOperand_STORE(cast<StoreSDNode>(N),
                                                     OpNo); break;
@@ -1577,6 +1579,17 @@ SDOperand DAGTypeLegalizer::PromoteOperand_BR_CC(SDNode *N, unsigned OpNo) {
                                 N->getOperand(1), LHS, RHS, N->getOperand(4));
 }
 
+SDOperand DAGTypeLegalizer::PromoteOperand_SETCC(SDNode *N, unsigned OpNo) {
+  assert(OpNo == 0 && "Don't know how to promote this operand");
+
+  SDOperand LHS = N->getOperand(0);
+  SDOperand RHS = N->getOperand(1);
+  PromoteSetCCOperands(LHS, RHS, cast<CondCodeSDNode>(N->getOperand(2))->get());
+
+  // The CC (#2) is always legal.
+  return DAG.UpdateNodeOperands(SDOperand(N, 0), LHS, RHS, N->getOperand(2));
+}
+
 /// PromoteSetCCOperands - Promote the operands of a comparison.  This code is
 /// shared among BR_CC, SELECT_CC, and SETCC handlers.
 void DAGTypeLegalizer::PromoteSetCCOperands(SDOperand &NewLHS,SDOperand &NewRHS,