[PATCH] D33186: [InstCombine] Canonicalize clamp of float types to minmax in fast mode.

[James Molloy via Phabricator via llvm-commits]

jmolloy added a comment.

Right; that's X86's strange not-a-maxnum-not-a-maxnan behaviour where it just selects the zeroth operand.

You should be able to select that for either of FMAXNAN or FMAXNUM though when the "nnan" flag is set on the instruction, which should be the case in fast-math mode?


https://reviews.llvm.org/D33186