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| author | Sanjay Patel <spatel@rotateright.com> | 2014-12-31 22:14:05 +0000 |
|---|---|---|
| committer | Sanjay Patel <spatel@rotateright.com> | 2014-12-31 22:14:05 +0000 |
| commit | e68f71574f9c61f72d1aca2811d85da9e4bc0a69 (patch) | |
| tree | 542273ea5e87168e9ec96a46f80efb3c267b688c /llvm/unittests/ADT/ArrayRefTest.cpp | |
| parent | 0dfd2400688266e688c00b62b38491d4a297c20c (diff) | |
| download | llvm-e68f71574f9c61f72d1aca2811d85da9e4bc0a69.zip llvm-e68f71574f9c61f72d1aca2811d85da9e4bc0a69.tar.gz llvm-e68f71574f9c61f72d1aca2811d85da9e4bc0a69.tar.bz2 | |
InstCombine: fsub nsz 0, X ==> fsub nsz -0.0, X
Some day the backend may handle instruction-level fast math flags and make
this transform unnecessary, but it's still better practice to use the canonical
representation of fneg when possible (use a -0.0).
This is a partial fix for PR20870 ( http://llvm.org/bugs/show_bug.cgi?id=20870 ).
See also http://reviews.llvm.org/D6723.
Differential Revision: http://reviews.llvm.org/D6731
llvm-svn: 225050
Diffstat (limited to 'llvm/unittests/ADT/ArrayRefTest.cpp')
0 files changed, 0 insertions, 0 deletions