treat TAILCALL nodes identically to CALL nodes


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21977 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/IA64/IA64ISelPattern.cpp b/lib/Target/IA64/IA64ISelPattern.cpp
index f4c50c0..3cd32ba 100644
--- a/lib/Target/IA64/IA64ISelPattern.cpp
+++ b/lib/Target/IA64/IA64ISelPattern.cpp
@@ -953,7 +953,7 @@
   unsigned &Reg = ExprMap[N];
   if (Reg) return Reg;
 
-  if (N.getOpcode() != ISD::CALL)
+  if (N.getOpcode() != ISD::CALL && N.getOpcode() != ISD::TAILCALL)
     Reg = Result = (N.getValueType() != MVT::Other) ?
       MakeReg(N.getValueType()) : 1;
   else {
@@ -2072,6 +2072,7 @@
       return Result;
   }
 
+  case ISD::TAILCALL:
   case ISD::CALL: {
       Select(N.getOperand(0));
 
@@ -2342,6 +2343,7 @@
   case ISD::ZEXTLOAD:
   case ISD::SEXTLOAD:
   case ISD::LOAD:
+  case ISD::TAILCALL:
   case ISD::CALL:
   case ISD::CopyFromReg:
   case ISD::DYNAMIC_STACKALLOC: