Special calling conventions for Intel OpenCL built-in library.

llvm-svn: 166566
diff --git a/llvm/lib/VMCore/Verifier.cpp b/llvm/lib/VMCore/Verifier.cpp
index fd629b4..eb40b09 100644
--- a/llvm/lib/VMCore/Verifier.cpp
+++ b/llvm/lib/VMCore/Verifier.cpp
@@ -705,6 +705,7 @@
   case CallingConv::Cold:
   case CallingConv::X86_FastCall:
   case CallingConv::X86_ThisCall:
+  case CallingConv::Intel_OCL_BI:
   case CallingConv::PTX_Kernel:
   case CallingConv::PTX_Device:
     Assert1(!F.isVarArg(),