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2 Commits

Author SHA1 Message Date
Duncan Sands
f61d49df40 Make it possible to indicate relaxed floating point requirements at the IR level 
through the use of 'fpmath' metadata.  Currently this only provides a 'fpaccuracy'
value, which may be a number in ULPs or the keyword 'fast', however the intent is
that this will be extended with additional information about NaN's, infinities
etc later.  No optimizations have been hooked up to this so far.

llvm-svn: 154822
 2012-04-16 16:28:59 +00:00
Duncan Sands
f6cbb0b2cb Add the MDBuilder helper class for conveniently creating metadata. 
llvm-svn: 154766
 2012-04-15 18:03:49 +00:00