fix vary shape setitem

Author: cjld

python/jittor/__init__.py

@@ -7,7 +7,7 @@
 # This file is subject to the terms and conditions defined in
 # file 'LICENSE.txt', which is part of this source code package.
 # ***************************************************************
-__version__ = '1.2.0.5'
+__version__ = '1.2.0.6'
 from . import lock
 with lock.lock_scope():
     from . import compiler

python/jittor/test/test_slice.py

@@ -133,6 +133,13 @@ def numpy_grad(vars):
         assert np.allclose(da.numpy(), nda, atol = 1e-3)
         assert np.allclose(db.numpy(), ndb, atol = 1e-3)
 
+    def test_vary_shape_setitem(self):
+        a = jt.array([1,2,3,4,5])
+        b = jt.array([1,2,3,4,5])
+        c = jt.where(b>3)
+        a[c] = 0
+        assert (a.data == [1,2,3,0,0]).all()
+
 
 
 if __name__ == "__main__":

src/ops/setitem_op.cc

@@ -176,6 +176,14 @@ VarPtr SetitemOp::grad(Var* out, Var* dout, Var* v, int v_index) {
 }
 
 void SetitemOp::jit_prepare() {
+    for (int i=0; i<o_shape.size(); i++)
+        if (o_shape[i]<0) {
+            // because output shape is inferd, check in
+            // executor not work
+            // reinfer shape if o_shape has vary shape
+            infer_shape();
+            break;
+        }
     auto data = input(1);
     add_jit_define("OP", op);
     add_jit_define("Td", data->dtype());