Silly Sparc is big endian. If we have to load args out of incoming stack slots

that are smaller than an int, make sure to adjust the frame pointer to take
this into consideration.

llvm-svn: 25351

llvm/lib/Target/SparcV8/SparcV8ISelDAGToDAG.cpp

@@ -241,6 +241,10 @@ SparcV8TargetLowering::LowerArguments(Function &F, SelectionDAG &DAG) {
           unsigned LoadOp =
             I->getType()->isSigned() ? ISD::SEXTLOAD : ISD::ZEXTLOAD;
 
+          // Sparc is big endian, so add an offset based on the ObjectVT.
+          unsigned Offset = 4-std::max(1U, MVT::getSizeInBits(ObjectVT)/8);
+          FIPtr = DAG.getNode(ISD::ADD, MVT::i32, FIPtr,
+                              DAG.getConstant(Offset, MVT::i32));
           Load = DAG.getExtLoad(LoadOp, MVT::i32, Root, FIPtr,
                                 DAG.getSrcValue(0), ObjectVT);
           Load = DAG.getNode(ISD::TRUNCATE, ObjectVT, Load);