Index: llvm/trunk/docs/LangRef.rst
===================================================================
--- llvm/trunk/docs/LangRef.rst
+++ llvm/trunk/docs/LangRef.rst
@@ -12700,6 +12700,33 @@
 that the optimizer can otherwise deduce or facts that are of little use to the
 optimizer.
 
+.. _int_ssa_copy:
+
+'``llvm.ssa_copy``' Intrinsic
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+Syntax:
+"""""""
+
+::
+
+      declare type @llvm.ssa_copy(type %operand) returned(1) readnone
+
+Arguments:
+""""""""""
+
+The first argument is an operand which is used as the returned value.
+
+Overview:
+""""""""""
+
+The ``llvm.ssa_copy`` intrinsic can be used to attach information to
+operations by copying them and giving them new names.  For example,
+the PredicateInfo utility uses it to build Extended SSA form, and
+attach various forms of information to operands that dominate specific
+uses.  It is not meant for general use, only for building temporary
+renaming forms that require value splits at certain points.
+
 .. _type.test:
 
 '``llvm.type.test``' Intrinsic
Index: llvm/trunk/include/llvm/IR/Intrinsics.td
===================================================================
--- llvm/trunk/include/llvm/IR/Intrinsics.td
+++ llvm/trunk/include/llvm/IR/Intrinsics.td
@@ -781,6 +781,10 @@
                                  [IntrArgMemOnly, NoCapture<0>, NoCapture<1>,
                                   WriteOnly<0>, ReadOnly<1>]>;
 
+//===----- Intrinsics that are used to provide predicate information -----===//
+
+def int_ssa_copy : Intrinsic<[llvm_any_ty], [LLVMMatchType<0>],
+			     [IntrNoMem, Returned<0>]>;
 //===----------------------------------------------------------------------===//
 // Target-specific intrinsics
 //===----------------------------------------------------------------------===//