Do not collect necessary stage 1 collection before discarding integral for trivial conditionals

python/dune/perftool/sumfact/accumulation.py

@@ -381,9 +381,6 @@ def generate_accumulation_instruction(expr, visitor):
     test_info = visitor.test_info
     trial_info = visitor.trial_info
 
-    # Cache all stage 1 sum factorization kernels used in this expression
-    SumfactCollectMapper()(expr)
-
     # Number of basis functions per direction
     leaf_element = test_info.element
     from ufl import MixedElement
@@ -405,6 +402,9 @@ def generate_accumulation_instruction(expr, visitor):
     if False in predicates:
         return
 
+    # Cache all stage 1 sum factorization kernels used in this expression
+    SumfactCollectMapper()(expr)
+
     insn_dep = None
 
     from dune.perftool.pdelab.localoperator import determine_accumulation_space