[llvm-commits] [llvm] r40605 - /llvm/trunk/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp

[Scott Michel]

Author: pingbak
Date: Mon Jul 30 16:00:31 2007
New Revision: 40605

URL: http://llvm.org/viewvc/llvm-project?rev=40605&view=rev
Log:
- Allow custom lowering for CTPOP, CTTZ, CTLZ.
- Fixed an existing unexpanded tab.

Modified:
    llvm/trunk/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp

Modified: llvm/trunk/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
URL: 
http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp?rev=40605&r1=40604&r2=40605&view=diff

==============================================================================
--- llvm/trunk/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp (original)
+++ llvm/trunk/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp Mon Jul 30 16:00:31 2007
@@ -2738,9 +2738,16 @@
   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 @@
                             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))


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