[PEI] Pass the frame index operand number to the eliminateFrameIndex function.

Each target implementation was needlessly recomputing the index.
Part of rdar://13076458

llvm-svn: 174083

1 files changed, 4 insertions, 3 deletions

diff --git a/llvm/include/llvm/Target/TargetRegisterInfo.h b/llvm/include/llvm/Target/TargetRegisterInfo.h
index 2a8ef98cc77..b33a85035e4 100644
--- a/llvm/include/llvm/Target/TargetRegisterInfo.h
+++ b/llvm/include/llvm/Target/TargetRegisterInfo.h
@@ -767,10 +767,11 @@ public:
   /// referenced by the iterator contains an MO_FrameIndex operand which must be
   /// eliminated by this method.  This method may modify or replace the
   /// specified instruction, as long as it keeps the iterator pointing at the
-  /// finished product. SPAdj is the SP adjustment due to call frame setup
-  /// instruction.
+  /// finished product.  SPAdj is the SP adjustment due to call frame setup
+  /// instruction.  FIOperandNum is the FI operand number.
   virtual void eliminateFrameIndex(MachineBasicBlock::iterator MI,
-                                   int SPAdj, RegScavenger *RS=NULL) const = 0;
+                                   int SPAdj, unsigned FIOperandNum,
+                                   RegScavenger *RS = NULL) const = 0;
 
   //===--------------------------------------------------------------------===//
   /// Debug information queries.