[llvm-branch-commits] [llvm] InstCombine: Fold out nanless canonicalize pattern (PR #172998)

[Matt Arsenault via llvm-branch-commits]

arsenm wrote:

Switched to replace the select operand in the cases where possible. The DAZ cases still need to treat this as a combined operation. The reciprocal fold also special cases the full operation to avoid introducing an unnecessary freeze. I'm also not confident I'm handling the undef case correctly 

https://github.com/llvm/llvm-project/pull/172998