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5 Commits

Author SHA1 Message Date
Dan Gohman be24c455c4 Actually enable the -enable-unsafe-fp-math tests. 
llvm-svn: 96796
 2010-02-22 18:53:26 +00:00
Dan Gohman b87de8d30d Remove the logic for reasoning about NaNs from the code that forms 
SSE min and max instructions. The real thing this code needs to be
concerned about is negative zero.

Update the sse-minmax.ll test accordingly, and add tests for
-enable-unsafe-fp-math mode as well.

llvm-svn: 96775
 2010-02-22 04:03:39 +00:00
Dan Gohman 48ade83e60 Recognize SSE min and max opportunities in even more cases. 
And fix a bug with the behavior of min/max instructions formed from
fcmp uge comparisons.

Also, use FiniteOnlyFPMath() for this code instead of UnsafeFPMath,
as it is more specific.

llvm-svn: 82466
 2009-09-21 18:03:22 +00:00
Dan Gohman 40503396da Eliminate more uses of llvm-as and llvm-dis. 
llvm-svn: 81290
 2009-09-08 23:54:48 +00:00
Dan Gohman d0d5e685da Recognize more opportunities to use SSE min and max instructions, 
swapping the operands if necessary.

llvm-svn: 80940
 2009-09-03 20:34:31 +00:00