Define GenHPVM pass in GenHPVM.cpp

hpvm/lib/Transforms/GenHPVM/GenHPVM.cpp

@@ -6,6 +6,12 @@
 // License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
+//
+// This pass takes LLVM IR with HPVM-C functions to generate textual representa-
+// -tion for HPVM IR consisting of HPVM intrinsics. Memory-to-register 
+// optimization pass is expected to execute prior to execution of this pass.
+//
+//===----------------------------------------------------------------------===//
 
 #define DEBUG_TYPE "genhpvm"
 #include "GenHPVM/GenHPVM.h"