Merge pull request #3475 from carriepl/scan_backend_speedup

Scan backend speedup

Merge pull request #3475 from carriepl/scan_backend_speedup
c4f1ede2 · Frédéric Bastien · 60026783 · 9a70e813 · c4f1ede2 · c4f1ede2
--- a/theano/scan_module/scan_op.py
+++ b/theano/scan_module/scan_op.py
--- a/theano/scan_module/scan_perform.c
+++ b/theano/scan_module/scan_perform.c
--- a/theano/scan_module/scan_perform.pyx
+++ b/theano/scan_module/scan_perform.pyx
--- a/theano/scan_module/scan_perform_ext.py
+++ b/theano/scan_module/scan_perform_ext.py