[llvm-commits] [llvm] r41578 - /llvm/trunk/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp

[Anton Korobeynikov]

Author: asl
Date: Wed Aug 29 14:28:29 2007
New Revision: 41578

URL: http://llvm.org/viewvc/llvm-project?rev=41578&view=rev
Log:
Lower FRAME_TO_ADDR_OFFSET to zero by default (if not custom lowered)

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=41578&r1=41577&r2=41578&view=diff

==============================================================================
--- llvm/trunk/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp (original)
+++ llvm/trunk/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp Wed Aug 29 14:28:29 2007
@@ -733,7 +733,6 @@
     break;
   case ISD::FRAMEADDR:
   case ISD::RETURNADDR:
-  case ISD::FRAME_TO_ARGS_OFFSET:
     // The only option for these nodes is to custom lower them.  If the target
     // does not custom lower them, then return zero.
     Tmp1 = TLI.LowerOperation(Op, DAG);
@@ -742,6 +741,19 @@
     else
       Result = DAG.getConstant(0, TLI.getPointerTy());
     break;
+  case ISD::FRAME_TO_ARGS_OFFSET:
+    MVT::ValueType VT = Node->getValueType(0);
+    switch (TLI.getOperationAction(Node->getOpcode(), VT)) {
+    default: assert(0 && "This action is not supported yet!");
+    case TargetLowering::Custom:
+      Result = TLI.LowerOperation(Op, DAG);
+      if (Result.Val) break;
+      // Fall Thru
+    case TargetLowering::Legal:
+      Result = DAG.getConstant(0, VT);
+      break;
+    }
+    break;
   case ISD::EXCEPTIONADDR: {
     Tmp1 = LegalizeOp(Node->getOperand(0));
     MVT::ValueType VT = Node->getValueType(0);