Fix tag matching condition in precompute().

loopy/cse.py

@@ -473,7 +473,7 @@ def precompute(kernel, subst_use, dtype, sweep_inames=[],
             else:
                 return None
 
-        if subst_tag is None or subst_tag != tag:
+        if subst_tag is not None and subst_tag != tag:
             # use fall-back identity mapper
             return None
 

test/test_sem_tim.py

@@ -7,6 +7,8 @@ import loopy as lp
 from pyopencl.tools import pytest_generate_tests_for_pyopencl \
         as pytest_generate_tests
 
+1/0 # inspect me
+
 
 
 

test/test_tim.py

@@ -7,6 +7,8 @@ import loopy as lp
 from pyopencl.tools import pytest_generate_tests_for_pyopencl \
         as pytest_generate_tests
 
+1/0 # see sem_reagan?
+
 
 
 def test_tim2d(ctx_factory):