Add an "original alignment" field to load and store nodes. This enables the

DAG Combiner to disambiguate chains for loads and stores of types which are
 broken up by the Legalizer into smaller pieces.  


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@81813 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 6 insertions, 6 deletions

diff --git a/include/llvm/CodeGen/SelectionDAG.h b/include/llvm/CodeGen/SelectionDAG.h
index 9ab0415..064fc87 100644
--- a/include/llvm/CodeGen/SelectionDAG.h
+++ b/include/llvm/CodeGen/SelectionDAG.h
@@ -544,7 +544,7 @@ public:
   ///
   SDValue getLoad(EVT VT, DebugLoc dl, SDValue Chain, SDValue Ptr,
                     const Value *SV, int SVOffset, bool isVolatile=false,
-                    unsigned Alignment=0);
+                    unsigned Alignment=0, unsigned OrigAlignment=0);
   SDValue getExtLoad(ISD::LoadExtType ExtType, DebugLoc dl, EVT VT,
                        SDValue Chain, SDValue Ptr, const Value *SV,
                        int SVOffset, EVT EVT, bool isVolatile=false,
@@ -552,16 +552,16 @@ public:
   SDValue getIndexedLoad(SDValue OrigLoad, DebugLoc dl, SDValue Base,
                            SDValue Offset, ISD::MemIndexedMode AM);
   SDValue getLoad(ISD::MemIndexedMode AM, DebugLoc dl, ISD::LoadExtType ExtType,
-                    EVT VT, SDValue Chain,
-                    SDValue Ptr, SDValue Offset,
-                    const Value *SV, int SVOffset, EVT EVT,
-                    bool isVolatile=false, unsigned Alignment=0);
+                  EVT VT, SDValue Chain, SDValue Ptr, SDValue Offset,
+                  const Value *SV, int SVOffset, EVT EVT,
+                  bool isVolatile=false, unsigned Alignment=0,
+                  unsigned OrigAlignment=0);
 
   /// getStore - Helper function to build ISD::STORE nodes.
   ///
   SDValue getStore(SDValue Chain, DebugLoc dl, SDValue Val, SDValue Ptr,
                      const Value *SV, int SVOffset, bool isVolatile=false,
-                     unsigned Alignment=0);
+                     unsigned Alignment=0, unsigned OrigAlignment=0);
   SDValue getTruncStore(SDValue Chain, DebugLoc dl, SDValue Val, SDValue Ptr,
                           const Value *SV, int SVOffset, EVT TVT,
                           bool isVolatile=false, unsigned Alignment=0);