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add a comment and fix some consistency issues, converting
authorChris Lattner <sabre@nondot.org>
Sat, 3 Apr 2010 06:41:49 +0000 (06:41 +0000)
committerChris Lattner <sabre@nondot.org>
Sat, 3 Apr 2010 06:41:49 +0000 (06:41 +0000)
commitbbb91498da1a4dc77332bf93d7c13060f0c63a70
tree3c966e74ad370ac1d3ce388b3ec75a3ccc0bd8fb
parent43b85273ee11536c81b14dca0114cd8b9407db8e
add a comment and fix some consistency issues, converting
to a signed vs unsigned value depending on the sign of the
constant fp means that we can't distinguish between a
truly negative number and a positive number so large the
32nd bit is set.  So, do don't this!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100283 91177308-0d34-0410-b5e6-96231b3b80d8
lib/Transforms/Scalar/IndVarSimplify.cpp