[llvm-commits] [llvm] r43165 - in /llvm/trunk: include/llvm/Target/TargetLowering.h lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp

[Chris Lattner]

Author: lattner
Date: Thu Oct 18 22:31:45 2007
New Revision: 43165

URL: http://llvm.org/viewvc/llvm-project?rev=43165&view=rev
Log:
add a new target hook.

Modified:
    llvm/trunk/include/llvm/Target/TargetLowering.h
    llvm/trunk/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp

Modified: llvm/trunk/include/llvm/Target/TargetLowering.h
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/include/llvm/Target/TargetLowering.h?rev=43165&r1=43164&r2=43165&view=diff

==============================================================================
--- llvm/trunk/include/llvm/Target/TargetLowering.h (original)
+++ llvm/trunk/include/llvm/Target/TargetLowering.h Thu Oct 18 22:31:45 2007
@@ -885,6 +885,15 @@
   /// implement this.  The default implementation of this aborts.
   virtual SDOperand LowerOperation(SDOperand Op, SelectionDAG &DAG);
 
+  /// ExpandOperation - This callback is invoked for operations that are 
+  /// unsupported by the target, which are registered to use 'custom' lowering,
+  /// and whose result type needs to be expanded.
+  ///
+  /// If the target has no operations that require custom lowering, it need not
+  /// implement this.  The default implementation of this aborts.
+  virtual std::pair<SDOperand,SDOperand> 
+    ExpandOperation(SDOperand Op, SelectionDAG &DAG);
+  
   /// IsEligibleForTailCallOptimization - Check whether the call is eligible for
   /// tail call optimization. Targets which want to do tail call optimization
   /// should override this function. 

Modified: llvm/trunk/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp?rev=43165&r1=43164&r2=43165&view=diff

==============================================================================
--- llvm/trunk/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp (original)
+++ llvm/trunk/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp Thu Oct 18 22:31:45 2007
@@ -4134,6 +4134,14 @@
   return SDOperand();
 }
 
+std::pair<SDOperand,SDOperand>
+TargetLowering::ExpandOperation(SDOperand Op, SelectionDAG &DAG) {
+  assert(0 && "ExpandOperation not implemented for this target!");
+  abort();
+  return std::pair<SDOperand,SDOperand>();
+}
+
+
 SDOperand TargetLowering::CustomPromoteOperation(SDOperand Op,
                                                  SelectionDAG &DAG) {
   assert(0 && "CustomPromoteOperation not implemented for this target!");