Add an isTailCall flag to LowerCallTo


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21958 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/PowerPC/PPCISelPattern.cpp b/lib/Target/PowerPC/PPCISelPattern.cpp
index 8a0f27b..4eeaa24 100644
--- a/lib/Target/PowerPC/PPCISelPattern.cpp
+++ b/lib/Target/PowerPC/PPCISelPattern.cpp
@@ -94,7 +94,8 @@
     /// actual call.
     virtual std::pair<SDOperand, SDOperand>
     LowerCallTo(SDOperand Chain, const Type *RetTy, bool isVarArg, unsigned CC,
-                SDOperand Callee, ArgListTy &Args, SelectionDAG &DAG);
+                bool isTailCall, SDOperand Callee, ArgListTy &Args,
+                SelectionDAG &DAG);
 
     virtual std::pair<SDOperand, SDOperand>
     LowerVAStart(SDOperand Chain, SelectionDAG &DAG);
@@ -281,7 +282,7 @@
 std::pair<SDOperand, SDOperand>
 PPC32TargetLowering::LowerCallTo(SDOperand Chain,
                                  const Type *RetTy, bool isVarArg,
-                                 unsigned CallingConv, 
+                                 unsigned CallingConv, bool isTailCall, 
                                  SDOperand Callee, ArgListTy &Args,
                                  SelectionDAG &DAG) {
   // args_to_use will accumulate outgoing args for the ISD::CALL case in