Fix range in data flow analysis (#10865)

* fix range in data flow analysis
7 years ago · c509c82546
parent 567440928b
commit c509c82546
1 changed files with 1 additions and 1 deletions
--- a/python/paddle/fluid/transpiler/memory_optimization_transpiler.py
+++ b/python/paddle/fluid/transpiler/memory_optimization_transpiler.py
@ -107,7 +107,7 @@ class ControlFlowGraph(object):
        # Repeatedly apply liveness updates until the algorithm stablize
        # on a complete set live input vars and live output vars.
        while True:
-            for i in range(self.op_size, 0, -1):
+            for i in reversed(range(self.op_size)):
                live_in[i] = set(self._live_in[i])
                live_out[i] = set(self._live_out[i])
                for s in self._successors[i]: