- Added getOpcodeAfterMemoryUnfold(). It doesn't unfold an instruction, but only returns the opcode of the instruction post unfolding.

- Fix some copy+paste bugs.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43153 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 10 insertions, 2 deletions

diff --git a/include/llvm/Target/MRegisterInfo.h b/include/llvm/Target/MRegisterInfo.h
index 12b022e..dd24f37 100644
--- a/include/llvm/Target/MRegisterInfo.h
+++ b/include/llvm/Target/MRegisterInfo.h
@@ -508,7 +508,7 @@ public:
                                    const TargetRegisterClass *RC) const = 0;
 
   virtual void storeRegToAddr(MachineFunction &MF, unsigned SrcReg,
-                              SmallVectorImpl<MachineOperand> Addr,
+                              SmallVectorImpl<MachineOperand> &Addr,
                               const TargetRegisterClass *RC,
                               SmallVectorImpl<MachineInstr*> &NewMIs) const = 0;
 
@@ -518,7 +518,7 @@ public:
                                     const TargetRegisterClass *RC) const = 0;
 
   virtual void loadRegFromAddr(MachineFunction &MF, unsigned DestReg,
-                               SmallVectorImpl<MachineOperand> Addr,
+                               SmallVectorImpl<MachineOperand> &Addr,
                                const TargetRegisterClass *RC,
                                SmallVectorImpl<MachineInstr*> &NewMIs) const =0;
 
@@ -577,6 +577,14 @@ public:
     return false;
   }
 
+  /// getOpcodeAfterMemoryUnfold - Returns the opcode of the would be new
+  /// instruction after load / store are unfolded from the specified opcode.
+  /// It returns zero if the specified unfolding is impossible.
+  virtual unsigned getOpcodeAfterMemoryUnfold(unsigned Opc,
+                                      bool UnfoldLoad, bool UnfoldStore) const {
+    return 0;
+  }
+
   /// targetHandlesStackFrameRounding - Returns true if the target is
   /// responsible for rounding up the stack frame (probably at emitPrologue
   /// time).