[PATCH] Bug 21610: Canonicalize min/max fcmp selects to use ordered comparisons

[hfinkel at anl.gov]

Thanks, LGTM.

================
Comment at: test/Transforms/InstCombine/unordered-fcmp-select.ll:127
@@ +126,2 @@
+
+attributes #0 = { nounwind readnone "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }
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Please remove unnecessary attributes.

http://reviews.llvm.org/D6337