Richard Sandiford 193bf3171f [SystemZ] Extend integer absolute selection ...

This patch makes more use of LPGFR and LNGFR.  It builds on top of
the LTGFR selection from r197234.  Most of the tests are motivated
by what InstCombine would produce.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@197236 91177308-0d34-0410-b5e6-96231b3b80d8

2013-12-13 15:35:00 +00:00

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