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[oota-llvm.git] / include / llvm / MDBuilder.h

diff --git a/include/llvm/MDBuilder.h b/include/llvm/MDBuilder.h
index add6f2e2f96d7c6afff7da2723958b75607adff5..c0f0ae67d99f1e9789873b92321c53b865157710 100644 (file)
--- a/include/llvm/MDBuilder.h
+++ b/include/llvm/MDBuilder.h
@@ -12,14 +12,14 @@
 //
 //===----------------------------------------------------------------------===//
 
-#ifndef LLVM_SUPPORT_MDBUILDER_H
-#define LLVM_SUPPORT_MDBUILDER_H
+#ifndef LLVM_MDBUILDER_H
+#define LLVM_MDBUILDER_H
 
+#include "llvm/ADT/APInt.h"
 #include "llvm/Constants.h"
 #include "llvm/DerivedTypes.h"
 #include "llvm/LLVMContext.h"
 #include "llvm/Metadata.h"
-#include "llvm/ADT/APInt.h"
 
 namespace llvm {
 
@@ -134,6 +134,27 @@ namespace llvm {
       }
     }
 
+    struct TBAAStructField {
+      uint64_t Offset;
+      uint64_t Size;
+      MDNode *TBAA;
+      TBAAStructField(uint64_t Offset, uint64_t Size, MDNode *TBAA) :
+        Offset(Offset), Size(Size), TBAA(TBAA) {}
+    };
+
+    /// \brief Return metadata for a tbaa.struct node with the given
+    /// struct field descriptions.
+    MDNode *createTBAAStructNode(ArrayRef<TBAAStructField> Fields) {
+      SmallVector<Value *, 4> Vals(Fields.size() * 3);
+      Type *Int64 = IntegerType::get(Context, 64);
+      for (unsigned i = 0, e = Fields.size(); i != e; ++i) {
+        Vals[i * 3 + 0] = ConstantInt::get(Int64, Fields[i].Offset);
+        Vals[i * 3 + 1] = ConstantInt::get(Int64, Fields[i].Size);
+        Vals[i * 3 + 2] = Fields[i].TBAA;
+      }
+      return MDNode::get(Context, Vals);
+    }
+
   };
 
 } // end namespace llvm