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Author SHA1 Message Date
Richard Sandiford 57485472e2 [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.

llvm-svn: 197236
 2013-12-13 15:35:00 +00:00
Richard Sandiford 784a580312 [SystemZ] Add negative integer absolute (load negative) 
For now this matches the equivalent of (neg (abs ...)), which did hit a few
times in projects/test-suite.  We should probably also match cases where
absolute-like selects are used with reversed arguments.

llvm-svn: 188671
 2013-08-19 12:56:58 +00:00