adding a means to disable a pass in relay build module

python/tvm/relay/build_module.py

@@ -56,6 +56,7 @@ class BuildConfig(object):
     defaults = {
         "opt_level": 2,
         "add_pass": None,
+        "disable_pass": None,
         "fallback_device": None,
     }
 
@@ -100,6 +101,8 @@ def pass_enabled(self, pass_name):
         """
         if self.add_pass and pass_name in self.add_pass:
             return True
+        if self.disable_pass and pass_name in self.disable_pass:
+            return False
         return self.opt_level >= OPT_PASS_LEVEL[pass_name]
 
 
@@ -114,9 +117,12 @@ def build_config(**kwargs):
     opt_level: int, default=2
         Optimization level. See OPT_PASS_LEVEL for level of each pass.
 
-    add_pass: set of str
+    add_pass: Set[str]
         Optimization pass to be added regardless of optimization level.
 
+    disable_pass: Set[str]
+        Optimization pass to be disabled regardless of optimization level.
+
     fallback_device : str or tvm.TVMContext
         The fallback device. It is also used as the default device for
         operators without specified device during heterogeneous execution.