Add a variant of foldMemoryOperand to fold any load / store, not just load / store from / to stack slots.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41597 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 7 insertions, 5 deletions

diff --git a/include/llvm/CodeGen/LiveIntervalAnalysis.h b/include/llvm/CodeGen/LiveIntervalAnalysis.h
index 59d482e..bf78475 100644
--- a/include/llvm/CodeGen/LiveIntervalAnalysis.h
+++ b/include/llvm/CodeGen/LiveIntervalAnalysis.h
@@ -242,11 +242,13 @@ namespace llvm {
     bool isReMaterializable(const LiveInterval &li, const VNInfo *ValNo,
                             MachineInstr *MI);
 
-    /// tryFoldMemoryOperand - Attempts to fold a spill / restore from slot
-    /// to reg into ith operand of specified MI. If it is successul, MI is
-    /// updated with the newly created MI and returns true.
-    bool tryFoldMemoryOperand(MachineInstr* &MI, VirtRegMap &vrm, unsigned index,
-                              unsigned i, int slot, unsigned reg);
+    /// tryFoldMemoryOperand - Attempts to fold either a spill / restore from
+    /// slot / to reg or any rematerialized load into ith operand of specified
+    /// MI. If it is successul, MI is updated with the newly created MI and
+    /// returns true.
+    bool tryFoldMemoryOperand(MachineInstr* &MI, VirtRegMap &vrm,
+                              unsigned index, unsigned i, bool isSS,
+                              MachineInstr *DefMI, int slot, unsigned reg);
 
     static LiveInterval createInterval(unsigned Reg);