compiler: Skip avoid_denormals upon recursive compilation

devito/core/cpu.py

@@ -166,7 +166,7 @@ def _specialize_iet(cls, graph, **kwargs):
         sregistry = kwargs['sregistry']
 
         # Flush denormal numbers
-        avoid_denormals(graph, platform=platform)
+        avoid_denormals(graph, **kwargs)
 
         # Distributed-memory parallelism
         mpiize(graph, **kwargs)
@@ -260,7 +260,7 @@ def _make_iet_passes_mapper(cls, **kwargs):
         parizer = cls._Target.Parizer(sregistry, options, platform, compiler)
 
         return {
-            'denormals': avoid_denormals,
+            'denormals': partial(avoid_denormals, **kwargs),
             'blocking': partial(relax_incr_dimensions, **kwargs),
             'parallel': parizer.make_parallel,
             'openmp': parizer.make_parallel,

devito/operator/operator.py

@@ -1038,6 +1038,7 @@ def __setstate__(self, state):
 # dangerous as some of them (the minority) might break in some circumstances
 # if applied in cascade (e.g., `linearization` on top of `linearization`)
 rcompile_registry = {
+    'avoid_denormals': False,
     'mpi': False,
     'linearize': False,
     'place-transfers': False

devito/passes/iet/engine.py

@@ -153,6 +153,12 @@ def wrapper(*args, **kwargs):
             maybe_timed = timed_pass
         else:
             maybe_timed = lambda func, name: func
+        try:
+            # If the pass has been disabled, skip it
+            if not kwargs['options'][func.__name__]:
+                return
+        except KeyError:
+            pass
         try:
             # Pure function case
             graph, = args

devito/passes/iet/misc.py

@@ -17,7 +17,7 @@
 
 
 @iet_pass
-def avoid_denormals(iet, platform=None):
+def avoid_denormals(iet, platform=None, **kwargs):
     """
     Introduce nodes in the Iteration/Expression tree that will expand to C
     macros telling the CPU to flush denormal numbers in hardware. Denormals