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Author SHA1 Message Date
Elliot Colp d9e6668928 Re-add SystemZ SNaN test 
The floating-point bug affecting ninja-x64-msvc-RA-centos6 is fixed (r277813) so this test should
now pass

llvm-svn: 278034
 2016-08-08 18:11:13 +00:00
Elliot Colp 6af6f64f87 I can't reproduce this buildbot failure locally, so temporarily remove this test while I investigate. 
http://bb.pgr.jp/builders/ninja-x64-msvc-RA-centos6/builds/27427

llvm-svn: 277636
 2016-08-03 19:39:20 +00:00
Elliot Colp 82b1468a4d Disable shrinking of SNaN constants 
When expanding FP constants, we attempt to shrink doubles to floats and perform an extending load.
However, on SystemZ, and possibly on other targets (I've only confirmed the problem on SystemZ), the FP extending load instruction may convert SNaN into QNaN, or may cause an exception. So in the general case, we would still like to shrink FP constants, but SNaNs should be left as doubles.

Differential Revision: https://reviews.llvm.org/D22685

llvm-svn: 277602
 2016-08-03 15:09:21 +00:00