Adding unsafeShiftL, unsafeShiftR to Data.Bits(Bits)
marlowsd at gmail.com
Tue Aug 16 16:06:24 CEST 2011
Johan Tibell has proposed that we add unsafeShiftL and unsafeShiftR
methods to the Bits class, as per the patch here:
I've talked this through with Johan, and we came to the conclusion that
while "unsafeShiftL" is a bit unsightly, this is the most workable
solution. For example, optimising away the test in shiftL directly in
the backend is not possible when compiling via LLVM, which only provides
the unsafe operation as a primitive.
Any objections before I push this in?
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