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fp-vrp: Simplify test when optimising Minus(x0...0).
authorChristoph Mallon <christoph.mallon@gmx.de>
Wed, 5 Dec 2012 09:22:14 +0000 (10:22 +0100)
committerChristoph Mallon <christoph.mallon@gmx.de>
Wed, 5 Dec 2012 09:28:20 +0000 (10:28 +0100)
It is sufficient to test, whether the zero bits equal the minimal value.
If they are all zero, the result is constant and this optimisation is unnecessary.


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