Add a comment about the special meaning of VoidTy in this context.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@71466 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/include/llvm/Target/TargetLowering.h b/include/llvm/Target/TargetLowering.h
index 624f9fc72ce4f8b5b66259e1f33e131038be6c6d..dcff47d24bc18fb0d624cdbc0df2a135978b0f80 100644 (file)
--- a/include/llvm/Target/TargetLowering.h
+++ b/include/llvm/Target/TargetLowering.h
@@ -1381,6 +1381,8 @@ public:
   
   /// isLegalAddressingMode - Return true if the addressing mode represented by
   /// AM is legal for this target, for a load/store of the specified type.
+  /// The type may be VoidTy, in which case only return true if the addressing
+  /// mode is legal for a load/store of any legal type.
   /// TODO: Handle pre/postinc as well.
   virtual bool isLegalAddressingMode(const AddrMode &AM, const Type *Ty) const;