Add infer_shape to the blas ops.

theano/tensor/blas.py

@@ -473,6 +473,9 @@ class Gemv(Op):
                 out += y
             out_storage[0][0] = numpy.asarray(out, dtype=y.dtype)
 
+    def infer_shape(self, node, input_shapes):
+        return [input_shapes[0]]
+
 gemv_no_inplace = Gemv(inplace=False)
 gemv_inplace = Gemv(inplace=True)
 # For the user interface. Opt will make them inplace later
@@ -540,6 +543,9 @@ class Ger(Op):
             A += numpy.outer(cx, cy)
         cZ[0] = A
 
+    def infer_shape(self, node, input_shapes):
+        return [input_shapes[0]]
+
 
 ger = Ger(destructive=False)
 ger_destructive = Ger(destructive=True)
@@ -1001,6 +1007,8 @@ class Gemm(GemmRelated):
     E_mixed = 'gemm requires matching dtypes'
     E_float = 'gemm requires floating-point dtypes'
 
+    __props__ = ('inplace',)
+
     def __init__(self, inplace):
         self.inplace = inplace
         if self.inplace:
@@ -1009,13 +1017,6 @@ class Gemm(GemmRelated):
         else:
             self.setup_z_Nz_Sz = self.setup_z_Nz_Sz_outplace
 
-    def __eq__(self, other):
-        return (type(self) == type(other) and
-                self.inplace == other.inplace)
-
-    def __hash__(self):
-        return hash(type(self)) ^ hash(self.inplace)
-
     def __str__(self):
         if self.inplace:
             inplace_str = 'inplace'
@@ -1124,6 +1125,9 @@ class Gemm(GemmRelated):
                 z += a * numpy.dot(x, y)
             zout[0] = z
 
+    def infer_shape(self, node, input_shapes):
+        return [inputs_shapes[0]]
+
     setup_z_Nz_Sz_inplace = """
         if (%(_zout)s != %(_z)s)
         {
@@ -1747,8 +1751,8 @@ class Dot22(GemmRelated):
             e.args = e.args + (x.shape, y.shape)
             raise
 
-    def __str__(self):
-        return self.__class__.__name__
+    def infer_shape(self, node, input_shapes):
+        return [[inputs_shapes[0][0], inputs_shapes[1][1]]]
 
     setup_z_Nz_Sz = """
         if ((NULL == %(_zout)s)
@@ -2018,8 +2022,8 @@ class Dot22Scalar(GemmRelated):
             e.args = e.args + (x.shape, y.shape)
             raise
 
-    def __str__(self):
-        return self.__class__.__name__
+    def infer_shape(self, node, input_shapes):
+        return [[input_shapes[0][0], input_shapes[1][1]]]
 
     setup_z_Nz_Sz = Dot22.setup_z_Nz_Sz