[llvm-commits] CVS: llvm/include/llvm/Target/MRegisterInfo.h

[Chris Lattner]

Changes in directory llvm/include/llvm/Target:

MRegisterInfo.h updated: 1.57 -> 1.58
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Log message:

add a new callback


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Diffs of the changes:  (+8 -0)

 MRegisterInfo.h |    8 ++++++++
 1 files changed, 8 insertions(+)


Index: llvm/include/llvm/Target/MRegisterInfo.h
diff -u llvm/include/llvm/Target/MRegisterInfo.h:1.57 llvm/include/llvm/Target/MRegisterInfo.h:1.58
--- llvm/include/llvm/Target/MRegisterInfo.h:1.57	Thu Apr 21 22:46:24 2005
+++ llvm/include/llvm/Target/MRegisterInfo.h	Fri Sep 16 20:02:45 2005
@@ -250,6 +250,14 @@
                             unsigned DestReg, unsigned SrcReg,
                             const TargetRegisterClass *RC) const = 0;
 
+  /// isLoadFromStackSlot - If the specified machine instruction is a direct
+  /// load from a stack slot, return the virtual or physical register number of
+  /// the destination along with the FrameIndex of the loaded stack slot.  If
+  /// not, return 0.  This predicate must return false if the instruction has
+  /// any side effects other than loading from the stack slot.
+  virtual unsigned isLoadFromStackSlot(MachineInstr *MI, int &FrameIndex) const{
+    return 0;
+  }
 
   /// foldMemoryOperand - Attempt to fold a load or store of the
   /// specified stack slot into the specified machine instruction for