Implement Promote for VAARG, and allow it to be custom promoted for people
who don't want the default behavior (Alpha).
llvm-svn: 25726
diff --git a/llvm/lib/Target/Alpha/AlphaISelLowering.cpp b/llvm/lib/Target/Alpha/AlphaISelLowering.cpp
index ac21b56..6779b90 100644
--- a/llvm/lib/Target/Alpha/AlphaISelLowering.cpp
+++ b/llvm/lib/Target/Alpha/AlphaISelLowering.cpp
@@ -141,6 +141,7 @@
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 @@
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);
+}