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

1 files changed, 4 insertions, 0 deletions

diff --git a/llvm/lib/Target/SparcV8/SparcV8ISelDAGToDAG.cpp b/llvm/lib/Target/SparcV8/SparcV8ISelDAGToDAG.cpp
index 08c66367141..e09b308e1fa 100644
--- a/llvm/lib/Target/SparcV8/SparcV8ISelDAGToDAG.cpp
+++ b/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);