Author: Tim Felgentreff <[email protected]>
Branch:
Changeset: r275:69e7111b08cb
Date: 2013-04-16 13:11 +0200
http://bitbucket.org/pypy/lang-smalltalk/changeset/69e7111b08cb/
Log: revert ovfcheck on LPI left shift
diff --git a/spyvm/model.py b/spyvm/model.py
--- a/spyvm/model.py
+++ b/spyvm/model.py
@@ -267,15 +267,12 @@
return "W_LargePositiveInteger1Word(%d)" % r_uint(self.value)
def lshift(self, space, shift):
- from rpython.rlib.rarithmetic import ovfcheck, intmask, r_uint
+ from rpython.rlib.rarithmetic import intmask, r_uint
# shift > 0, therefore the highest bit of upperbound is not set,
# i.e. upperbound is positive
upperbound = intmask(r_uint(-1) >> shift)
if 0 <= self.value <= upperbound:
- try:
- shifted = intmask(ovfcheck(self.value << shift))
- except OverflowError:
- raise error.PrimitiveFailedError()
+ shifted = intmask(self.value << shift)
return space.wrap_positive_32bit_int(shifted)
else:
raise error.PrimitiveFailedError()
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