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diff --git a/contrib/llvm/lib/Target/PTX/PTXInstrFormats.td b/contrib/llvm/lib/Target/PTX/PTXInstrFormats.td
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+++ b/contrib/llvm/lib/Target/PTX/PTXInstrFormats.td
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+//===- PTXInstrFormats.td - PTX Instruction Formats ----------*- tblgen -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+// PTX Predicate operand, default to (0, 0) = (zero-reg, always).
+// Leave PrintMethod empty; predicate printing is defined elsewhere.
+def pred : PredicateOperand<OtherVT, (ops Preds, i32imm),
+                                     (ops (i1 zero_reg), (i32 0))>;
+
+let Namespace = "PTX" in {
+  class InstPTX<dag oops, dag iops, string asmstr, list<dag> pattern>
+    : Instruction {
+      dag OutOperandList = oops;
+      dag InOperandList = !con(iops, (ins pred:$_p));
+      let AsmString = asmstr; // Predicate printing is defined elsewhere.
+      let Pattern = pattern;
+      let isPredicable = 1;
+  }
+}