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5 Commits

Author SHA1 Message Date
Sanjay Patel c7bb14301a [InstCombine] add folds for minnum(-a, -b) --> -maxnum(a, b) 
This is similar to what we do for integer min/max with 'not'
ops (rL321882).

This should fix:
https://bugs.llvm.org/show_bug.cgi?id=37404
https://bugs.llvm.org/show_bug.cgi?id=37405

llvm-svn: 332031
 2018-05-10 20:03:13 +00:00
Sanjay Patel b5322e385e [InstCombine] add minnum/maxnum tests (PR37404, PR37405); NFC 
llvm-svn: 332025
 2018-05-10 19:21:08 +00:00
Sanjay Patel dc4bb3fd36 [InstCombine] regenerate full checks; NFC 
llvm-svn: 331998
 2018-05-10 17:05:38 +00:00
Matt Arsenault 2458393104 Fix using wrong intrinsic in test 
This is a leftover from renaming the intrinsic.
It's surprising the unknown llvm. intrinsic wasn't rejected.

llvm-svn: 225304
 2015-01-06 23:00:33 +00:00
Matt Arsenault d6511b49ac Add minnum / maxnum intrinsics 
These are named following the IEEE-754 names for these
functions, rather than the libm fmin / fmax to avoid
possible ambiguities. Some languages may implement something
resembling fmin / fmax which return NaN if either operand is
to propagate errors. These implement the IEEE-754 semantics
of returning the other operand if either is a NaN representing
missing data.

llvm-svn: 220341
 2014-10-21 23:00:20 +00:00