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compiler.types: replace isinstance() with .__class__==. 

This provides a 50% speedup.
This commit is contained in:
whitequark 2015-11-27 18:22:55 +08:00
parent 6122fd70ca
commit 237e983770
1 changed files with 2 additions and 2 deletions
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4
artiq/compiler/types.py
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@ -64,7 +64,7 @@ class TVar(Type):
# because paths resulting from unification of large arrays
# can easily cause a stack overflow.
root = self
while isinstance(root, TVar):
while root.__class__ == TVar:
if root is root.parent:
break
else:
@ -72,7 +72,7 @@ class TVar(Type):
# path compression
iter = self
while isinstance(iter, TVar):
while iter.__class__ == TVar:
if iter is iter.parent:
break
else: