Add function attribute 'optnone'.

This function attribute indicates that the function is not optimized
by any optimization or code generator passes with the 
exception of interprocedural optimization passes.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@189101 91177308-0d34-0410-b5e6-96231b3b80d8

include/llvm/Bitcode/LLVMBitCodes.h

@@ -368,7 +368,8 @@ namespace bitc {
     ATTR_KIND_UW_TABLE = 33,
     ATTR_KIND_Z_EXT = 34,
     ATTR_KIND_BUILTIN = 35,
-    ATTR_KIND_COLD = 36
+    ATTR_KIND_COLD = 36,
+    ATTR_KIND_OPTIMIZE_NONE = 37
   };
 
 } // End bitc namespace