Added isLegalAddressExpression hook to test if the given expression can be

folded into target addressing mode for the given type.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35121 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 7 insertions, 1 deletions

diff --git a/include/llvm/Target/TargetLowering.h b/include/llvm/Target/TargetLowering.h
index 7fedc38..dc023c8 100644
--- a/include/llvm/Target/TargetLowering.h
+++ b/include/llvm/Target/TargetLowering.h
@@ -855,7 +855,13 @@ public:
   //===--------------------------------------------------------------------===//
   // Loop Strength Reduction hooks
   //
-  
+
+  /// isLegalAddressExpression - Return true if the binary expression made up of
+  /// specified opcode, operands, and type can be folded into target addressing
+  /// mode for load / store of the given type.
+  virtual bool isLegalAddressExpression(unsigned Opc, Value *Op0, Value *Op1,
+                                        const Type *Ty) const;
+
   /// isLegalAddressImmediate - Return true if the integer value can be used as
   /// the offset of the target addressing mode for load / store of the given
   /// type.