bugfix: if linker is a string in ProfileMode(linker). It was not working.

theano/compile/profilemode.py

@@ -2,7 +2,7 @@ import time
 
 from ..gof.link import WrapLinkerMany
 from ..gof.cutils import run_cthunk
-from ..compile.mode import Mode
+from ..compile.mode import Mode, predefined_linkers
 
 class ProfileMode(Mode):
     def __init__(self, linker, optimizer=None):
@@ -31,6 +31,9 @@ class ProfileMode(Mode):
         self.op_time = op_time
         self.op_cimpl = op_cimpl
 
+        if isinstance(linker, str):
+            linker = predefined_linkers[linker]
+
         wrap_linker = WrapLinkerMany([linker], [blah])
         if optimizer:
             super(ProfileMode, self).__init__(wrap_linker, optimizer)