[llvm-commits] [llvm] r60399 - in /llvm/trunk/lib: Target/README.txt Transforms/Scalar/InstructionCombining.cpp
Chris Lattner
clattner at apple.com
Tue Dec 2 00:18:11 PST 2008
On Dec 2, 2008, at 12:11 AM, Duncan Sands wrote:
> Hi,
>
>> - Remove the buggy -X/C -> X/-C transform. This isn't valid when X
>> isn't a
>> constant. If X is a constant, then this is folded elsewhere.
>
> why isn't this valid if X isn't a constant?
It is valid, but if X is a constant, "-X/C" should and does already
constant fold.
-Chris
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