1 files changed, 47 insertions, 0 deletions
diff --git a/include/llvm/Intrinsics.h b/include/llvm/Intrinsics.h
index 3703825603375..c3503889e7024 100644
--- a/include/llvm/Intrinsics.h
+++ b/include/llvm/Intrinsics.h
@@ -74,6 +74,53 @@ namespace Intrinsic {
   /// Map a GCC builtin name to an intrinsic ID.
   ID getIntrinsicForGCCBuiltin(const char *Prefix, const char *BuiltinName);
   
+  /// IITDescriptor - This is a type descriptor which explains the type
+  /// requirements of an intrinsic.  This is returned by
+  /// getIntrinsicInfoTableEntries.
+  struct IITDescriptor {
+    enum IITDescriptorKind {
+      Void, MMX, Metadata, Float, Double,
+      Integer, Vector, Pointer, Struct,
+      Argument, ExtendVecArgument, TruncVecArgument
+    } Kind;
+    
+    union {
+      unsigned Integer_Width;
+      unsigned Float_Width;
+      unsigned Vector_Width;
+      unsigned Pointer_AddressSpace;
+      unsigned Struct_NumElements;
+      unsigned Argument_Info;
+    };
+    
+    enum ArgKind {
+      AK_AnyInteger,
+      AK_AnyFloat,
+      AK_AnyVector,
+      AK_AnyPointer
+    };
+    unsigned getArgumentNumber() const {
+      assert(Kind == Argument || Kind == ExtendVecArgument || 
+             Kind == TruncVecArgument);
+      return Argument_Info >> 2;
+    }
+    ArgKind getArgumentKind() const {
+      assert(Kind == Argument || Kind == ExtendVecArgument || 
+             Kind == TruncVecArgument);
+      return (ArgKind)(Argument_Info&3);
+    }
+    
+    static IITDescriptor get(IITDescriptorKind K, unsigned Field) {
+      IITDescriptor Result = { K, { Field } };
+      return Result;
+    }
+  };
+  
+  /// getIntrinsicInfoTableEntries - Return the IIT table descriptor for the
+  /// specified intrinsic into an array of IITDescriptors.
+  /// 
+  void getIntrinsicInfoTableEntries(ID id, SmallVectorImpl<IITDescriptor> &T);
+  
 } // End Intrinsic namespace
 
 } // End llvm namespace