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* [x86] auto-generate complete checks for tests; NFCSanjay Patel2017-07-021-7/+8
| | | | | | These all used 'CHECK-NOT' which isn't necessary if we have complete checks. llvm-svn: 306981
* DAG: Check no signed zeros instead of unsafe math attributeMatt Arsenault2017-03-091-1/+1
| | | | llvm-svn: 297354
* Allow vector fsub ops with constants to get the same optimizations as scalars.Sanjay Patel2014-09-051-0/+23
This problem is bigger than just fsub, but this is the minimum fix to solve fneg for PR20556 ( http://llvm.org/bugs/show_bug.cgi?id=20556 ), and we solve zero subtraction with the same change. llvm-svn: 217286
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