Implement Promote for VAARG, and allow it to be custom promoted for people

who don't want the default behavior (Alpha).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25726 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 11 insertions, 0 deletions

diff --git a/lib/Target/Alpha/AlphaISelLowering.cpp b/lib/Target/Alpha/AlphaISelLowering.cpp
index ac21b563b4..6779b90bd3 100644
--- a/lib/Target/Alpha/AlphaISelLowering.cpp
+++ b/lib/Target/Alpha/AlphaISelLowering.cpp
@@ -141,6 +141,7 @@ AlphaTargetLowering::AlphaTargetLowering(TargetMachine &TM) : TargetLowering(TM)
   setOperationAction(ISD::VAEND,   MVT::Other, Expand);
   setOperationAction(ISD::VACOPY,  MVT::Other, Custom);
   setOperationAction(ISD::VAARG,   MVT::Other, Custom);
+  setOperationAction(ISD::VAARG,   MVT::i32,   Custom);
 
   setStackPointerRegisterToSaveRestore(Alpha::R30);
 
@@ -691,3 +692,13 @@ SDOperand AlphaTargetLowering::LowerOperation(SDOperand Op, SelectionDAG &DAG) {
 
   return SDOperand();
 }
+
+SDOperand AlphaTargetLowering::CustomPromoteOperation(SDOperand Op, 
+                                                      SelectionDAG &DAG) {
+  assert(Op.getValueType() == MVT::i32 && 
+         Op.getOpcode() == ISD::VAARG &&
+         "Unknown node to custom promote!");
+  
+  // The code in LowerOperation already handles i32 vaarg
+  return LowerOperation(Op, DAG);
+}