move CannotBeNegativeZero to ValueTracking. Simplify some signbit comparisons.
authorChris Lattner <sabre@nondot.org>
Mon, 2 Jun 2008 01:29:46 +0000 (01:29 +0000)
committerChris Lattner <sabre@nondot.org>
Mon, 2 Jun 2008 01:29:46 +0000 (01:29 +0000)
commit833f25d79ee28f1049f9177c3d2f4c9fbad6f643
treea220de2e1a1ee0a4a134b3b2e5975267b3139c0b
parent173234a68fb6ece106e77da443d87f09d5906cb9
move CannotBeNegativeZero to ValueTracking.  Simplify some signbit comparisons.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51864 91177308-0d34-0410-b5e6-96231b3b80d8
include/llvm/Analysis/ValueTracking.h
lib/Analysis/ValueTracking.cpp
lib/Transforms/Scalar/InstructionCombining.cpp