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Powers of two can't be zero anyway.
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Sei Lisa 2017-10-26 01:07:48 +02:00
parent 4ba71993a4
commit 106bb81543
1 changed files with 2 additions and 2 deletions
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4
lslopt/lslfoldconst.py
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@ -322,8 +322,8 @@ class foldconst(object):
return
del a, b
# Specific optimization to catch a bitwise test appearing frequently.
# If b and c are nonzero constant powers of two:
# Specific optimization to catch a frequent bitwise test.
# If b and c are constant powers of two:
# !(a & b) | !(a & c) -> ~(a|~(b|c))
# e.g. if (a & 4 && a & 8) -> if (!~(a|-13))
if (child[0]['nt'] == '!' and child[0]['ch'][0]['nt'] == '&'