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/PowerPC/PPC64ISelPattern.cpp b/lib/Target/PowerPC/PPC64ISelPattern.cpp
index ce74c58..41138cf 100644
--- a/lib/Target/PowerPC/PPC64ISelPattern.cpp
+++ b/lib/Target/PowerPC/PPC64ISelPattern.cpp
@@ -939,6 +939,7 @@
     Reg = Result = (N.getValueType() != MVT::Other) ?
                             MakeReg(N.getValueType()) : 1;
     break;
+  case ISD::TAILCALL:
   case ISD::CALL:
     // If this is a call instruction, make sure to prepare ALL of the result
     // values as well as the chain.
@@ -1070,6 +1071,7 @@
     return Result;
   }
 
+  case ISD::TAILCALL:
   case ISD::CALL: {
     unsigned GPR_idx = 0, FPR_idx = 0;
     static const unsigned GPR[] = {
@@ -1617,6 +1619,7 @@
   case ISD::ZEXTLOAD:
   case ISD::LOAD:
   case ISD::CopyFromReg:
+  case ISD::TAILCALL:
   case ISD::CALL:
   case ISD::DYNAMIC_STACKALLOC:
     ExprMap.erase(N);