From: Scott Michel <scottm@aero.org>
Date: Mon, 30 Jul 2007 21:00:31 +0000 (+0000)
Subject: - Allow custom lowering for CTPOP, CTTZ, CTLZ.
X-Git-Url: http://plrg.eecs.uci.edu/git/?a=commitdiff_plain;h=910b66d8d6fd8a27dcdea74431e3ea20c69b7db5;p=oota-llvm.git

- Allow custom lowering for CTPOP, CTTZ, CTLZ.
- Fixed an existing unexpanded tab.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40605 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp b/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
index 078cbf3d7a2..3ca30dd88d2 100644
--- a/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
+++ b/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
@@ -2738,9 +2738,16 @@ SDOperand SelectionDAGLegalize::LegalizeOp(SDOperand Op) {
   case ISD::CTLZ:
     Tmp1 = LegalizeOp(Node->getOperand(0));   // Op
     switch (TLI.getOperationAction(Node->getOpcode(), Node->getValueType(0))) {
-    case TargetLowering::Custom: assert(0 && "Cannot custom handle this yet!");
+    case TargetLowering::Custom:
     case TargetLowering::Legal:
       Result = DAG.UpdateNodeOperands(Result, Tmp1);
+      if (TLI.getOperationAction(Node->getOpcode(), Node->getValueType(0)) ==
+	  TargetLowering::Custom) {
+	Tmp1 = TLI.LowerOperation(Result, DAG);
+	if (Tmp1.Val) {
+	  Result = Tmp1;
+	}
+      }
       break;
     case TargetLowering::Promote: {
       MVT::ValueType OVT = Tmp1.getValueType();
@@ -2760,7 +2767,7 @@ SDOperand SelectionDAGLegalize::LegalizeOp(SDOperand Op) {
                             DAG.getConstant(MVT::getSizeInBits(NVT), NVT),
                             ISD::SETEQ);
         Result = DAG.getNode(ISD::SELECT, NVT, Tmp2,
-                           DAG.getConstant(MVT::getSizeInBits(OVT),NVT), Tmp1);
+                             DAG.getConstant(MVT::getSizeInBits(OVT),NVT), Tmp1);
         break;
       case ISD::CTLZ:
         // Tmp1 = Tmp1 - (sizeinbits(NVT) - sizeinbits(Old VT))